./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_label46+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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_label46+token_ring.05.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5ee0afe9c2a2e5e350a29156a4a7c18a224cec42ab7ff37fc9f10d35d9e173ae --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 21:02:32,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 21:02:32,956 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 21:02:32,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 21:02:32,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 21:02:32,984 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 21:02:32,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 21:02:32,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 21:02:32,985 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 21:02:32,986 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 21:02:32,986 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 21:02:32,987 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 21:02:32,987 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 21:02:32,988 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 21:02:32,989 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 21:02:32,989 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 21:02:32,989 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 21:02:32,989 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 21:02:32,990 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 21:02:32,990 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 21:02:32,990 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 21:02:32,997 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 21:02:32,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 21:02:32,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 21:02:32,997 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 21:02:32,997 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 21:02:32,998 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 21:02:32,998 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 21:02:32,998 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 21:02:32,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 21:02:32,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 21:02:32,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 21:02:32,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:02:32,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 21:02:32,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 21:02:32,999 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 21:02:32,999 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 21:02:32,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 21:02:32,999 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 21:02:33,000 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 21:02:33,000 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 21:02:33,002 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 21:02:33,002 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ee0afe9c2a2e5e350a29156a4a7c18a224cec42ab7ff37fc9f10d35d9e173ae [2024-10-12 21:02:33,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 21:02:33,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 21:02:33,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 21:02:33,240 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 21:02:33,241 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 21:02:33,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.05.cil-1.c [2024-10-12 21:02:34,535 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 21:02:34,991 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 21:02:34,992 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.05.cil-1.c [2024-10-12 21:02:35,063 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/503520a86/728dfcb9ff584c2e8c9c5d27cc314125/FLAG2e828c688 [2024-10-12 21:02:35,078 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/503520a86/728dfcb9ff584c2e8c9c5d27cc314125 [2024-10-12 21:02:35,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 21:02:35,082 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 21:02:35,085 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 21:02:35,085 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 21:02:35,089 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 21:02:35,090 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:02:35" (1/1) ... [2024-10-12 21:02:35,091 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c44e3ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:02:35, skipping insertion in model container [2024-10-12 21:02:35,093 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:02:35" (1/1) ... [2024-10-12 21:02:35,337 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 21:02:36,704 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_label46+token_ring.05.cil-1.c[382357,382370] [2024-10-12 21:02:36,725 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_label46+token_ring.05.cil-1.c[383339,383352] [2024-10-12 21:02:36,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:02:36,846 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 21:02:37,429 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_label46+token_ring.05.cil-1.c[382357,382370] [2024-10-12 21:02:37,433 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_label46+token_ring.05.cil-1.c[383339,383352] [2024-10-12 21:02:37,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:02:37,502 INFO L204 MainTranslator]: Completed translation [2024-10-12 21:02:37,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:02:37 WrapperNode [2024-10-12 21:02:37,503 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 21:02:37,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 21:02:37,505 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 21:02:37,505 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 21:02:37,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:02:37" (1/1) ... [2024-10-12 21:02:37,578 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:02:37" (1/1) ... [2024-10-12 21:02:37,817 INFO L138 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12813 [2024-10-12 21:02:37,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 21:02:37,819 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 21:02:37,819 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 21:02:37,819 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 21:02:37,828 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:02:37" (1/1) ... [2024-10-12 21:02:37,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:02:37" (1/1) ... [2024-10-12 21:02:37,862 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:02:37" (1/1) ... [2024-10-12 21:02:37,944 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]. [2024-10-12 21:02:37,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:02:37" (1/1) ... [2024-10-12 21:02:37,945 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:02:37" (1/1) ... [2024-10-12 21:02:38,183 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:02:37" (1/1) ... [2024-10-12 21:02:38,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:02:37" (1/1) ... [2024-10-12 21:02:38,302 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:02:37" (1/1) ... [2024-10-12 21:02:38,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:02:37" (1/1) ... [2024-10-12 21:02:38,358 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 21:02:38,359 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 21:02:38,359 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 21:02:38,359 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 21:02:38,361 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:02:37" (1/1) ... [2024-10-12 21:02:38,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:02:38,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:02:38,389 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) [2024-10-12 21:02:38,395 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 [2024-10-12 21:02:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 21:02:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-12 21:02:38,431 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-12 21:02:38,431 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-12 21:02:38,432 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-12 21:02:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-12 21:02:38,432 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-12 21:02:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-12 21:02:38,432 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-12 21:02:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-12 21:02:38,432 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-12 21:02:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-12 21:02:38,433 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-12 21:02:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 21:02:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 21:02:38,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 21:02:38,534 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 21:02:38,535 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 21:02:45,162 INFO L? ?]: Removed 1713 outVars from TransFormulas that were not future-live. [2024-10-12 21:02:45,162 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 21:02:45,259 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 21:02:45,260 INFO L314 CfgBuilder]: Removed 9 assume(true) statements. [2024-10-12 21:02:45,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:02:45 BoogieIcfgContainer [2024-10-12 21:02:45,261 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 21:02:45,262 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 21:02:45,262 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 21:02:45,265 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 21:02:45,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:02:35" (1/3) ... [2024-10-12 21:02:45,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ffd4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:02:45, skipping insertion in model container [2024-10-12 21:02:45,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:02:37" (2/3) ... [2024-10-12 21:02:45,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ffd4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:02:45, skipping insertion in model container [2024-10-12 21:02:45,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:02:45" (3/3) ... [2024-10-12 21:02:45,268 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.05.cil-1.c [2024-10-12 21:02:45,279 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 21:02:45,279 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-12 21:02:45,370 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 21:02:45,375 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;@6bee44be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 21:02:45,375 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-12 21:02:45,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 2310 states, 2282 states have (on average 1.8825591586327783) internal successors, (4296), 2285 states have internal predecessors, (4296), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-12 21:02:45,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 21:02:45,397 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:02:45,397 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] [2024-10-12 21:02:45,398 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:02:45,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:02:45,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1867406071, now seen corresponding path program 1 times [2024-10-12 21:02:45,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:02:45,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301982053] [2024-10-12 21:02:45,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:02:45,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:02:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:45,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:02:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:45,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:02:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:45,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:02:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:45,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:02:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:45,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:02:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:45,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:02:45,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:02:45,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301982053] [2024-10-12 21:02:45,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301982053] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:02:45,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:02:45,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:02:45,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219081480] [2024-10-12 21:02:45,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:02:45,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:02:45,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:02:45,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:02:45,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:02:45,821 INFO L87 Difference]: Start difference. First operand has 2310 states, 2282 states have (on average 1.8825591586327783) internal successors, (4296), 2285 states have internal predecessors, (4296), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-10-12 21:02:46,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:02:46,995 INFO L93 Difference]: Finished difference Result 4674 states and 8762 transitions. [2024-10-12 21:02:46,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 21:02:46,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 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 91 [2024-10-12 21:02:46,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:02:47,018 INFO L225 Difference]: With dead ends: 4674 [2024-10-12 21:02:47,018 INFO L226 Difference]: Without dead ends: 2366 [2024-10-12 21:02:47,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:02:47,028 INFO L432 NwaCegarLoop]: 4124 mSDtfsCounter, 480 mSDsluCounter, 12050 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 16174 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:02:47,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 16174 Invalid, 566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:02:47,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2024-10-12 21:02:47,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2306. [2024-10-12 21:02:47,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2279 states have (on average 1.8473014480035104) internal successors, (4210), 2281 states have internal predecessors, (4210), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-12 21:02:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 4248 transitions. [2024-10-12 21:02:47,143 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 4248 transitions. Word has length 91 [2024-10-12 21:02:47,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:02:47,144 INFO L471 AbstractCegarLoop]: Abstraction has 2306 states and 4248 transitions. [2024-10-12 21:02:47,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-10-12 21:02:47,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 4248 transitions. [2024-10-12 21:02:47,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 21:02:47,148 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:02:47,148 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] [2024-10-12 21:02:47,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 21:02:47,149 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:02:47,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:02:47,149 INFO L85 PathProgramCache]: Analyzing trace with hash 300648121, now seen corresponding path program 1 times [2024-10-12 21:02:47,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:02:47,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876442660] [2024-10-12 21:02:47,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:02:47,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:02:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:47,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:02:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:47,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:02:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:47,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:02:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:47,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:02:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:47,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:02:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:02:47,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:02:47,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876442660] [2024-10-12 21:02:47,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876442660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:02:47,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:02:47,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:02:47,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945133621] [2024-10-12 21:02:47,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:02:47,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:02:47,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:02:47,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:02:47,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:02:47,444 INFO L87 Difference]: Start difference. First operand 2306 states and 4248 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-12 21:02:48,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:02:48,713 INFO L93 Difference]: Finished difference Result 2779 states and 5016 transitions. [2024-10-12 21:02:48,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:02:48,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2024-10-12 21:02:48,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:02:48,723 INFO L225 Difference]: With dead ends: 2779 [2024-10-12 21:02:48,724 INFO L226 Difference]: Without dead ends: 2605 [2024-10-12 21:02:48,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:02:48,727 INFO L432 NwaCegarLoop]: 4103 mSDtfsCounter, 4671 mSDsluCounter, 12286 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 16389 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:02:48,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 16389 Invalid, 1195 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:02:48,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2024-10-12 21:02:48,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2486. [2024-10-12 21:02:48,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2438 states have (on average 1.8314191960623463) internal successors, (4465), 2441 states have internal predecessors, (4465), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2024-10-12 21:02:48,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4534 transitions. [2024-10-12 21:02:48,803 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4534 transitions. Word has length 91 [2024-10-12 21:02:48,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:02:48,803 INFO L471 AbstractCegarLoop]: Abstraction has 2486 states and 4534 transitions. [2024-10-12 21:02:48,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-12 21:02:48,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4534 transitions. [2024-10-12 21:02:48,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 21:02:48,805 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:02:48,805 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] [2024-10-12 21:02:48,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 21:02:48,806 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:02:48,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:02:48,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1713917117, now seen corresponding path program 1 times [2024-10-12 21:02:48,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:02:48,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039890997] [2024-10-12 21:02:48,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:02:48,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:02:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:48,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:02:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:48,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:02:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:48,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:02:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:48,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:02:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:48,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:02:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:48,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:02:48,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:02:48,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039890997] [2024-10-12 21:02:48,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039890997] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:02:48,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:02:48,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:02:48,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843510564] [2024-10-12 21:02:48,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:02:48,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:02:48,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:02:48,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:02:48,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:02:48,960 INFO L87 Difference]: Start difference. First operand 2486 states and 4534 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-12 21:02:50,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:02:50,498 INFO L93 Difference]: Finished difference Result 3204 states and 5694 transitions. [2024-10-12 21:02:50,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:02:50,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-12 21:02:50,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:02:50,509 INFO L225 Difference]: With dead ends: 3204 [2024-10-12 21:02:50,509 INFO L226 Difference]: Without dead ends: 2850 [2024-10-12 21:02:50,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-12 21:02:50,514 INFO L432 NwaCegarLoop]: 4210 mSDtfsCounter, 4688 mSDsluCounter, 16626 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4700 SdHoareTripleChecker+Valid, 20836 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:02:50,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4700 Valid, 20836 Invalid, 1869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 21:02:50,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2024-10-12 21:02:50,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2653. [2024-10-12 21:02:50,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.8165634674922602) internal successors, (4694), 2588 states have internal predecessors, (4694), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2024-10-12 21:02:50,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4793 transitions. [2024-10-12 21:02:50,578 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4793 transitions. Word has length 91 [2024-10-12 21:02:50,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:02:50,580 INFO L471 AbstractCegarLoop]: Abstraction has 2653 states and 4793 transitions. [2024-10-12 21:02:50,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-12 21:02:50,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4793 transitions. [2024-10-12 21:02:50,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 21:02:50,582 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:02:50,582 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] [2024-10-12 21:02:50,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 21:02:50,582 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:02:50,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:02:50,583 INFO L85 PathProgramCache]: Analyzing trace with hash -363419781, now seen corresponding path program 1 times [2024-10-12 21:02:50,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:02:50,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254440577] [2024-10-12 21:02:50,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:02:50,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:02:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:50,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:02:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:50,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:02:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:50,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:02:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:50,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:02:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:50,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:02:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:02:50,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:02:50,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254440577] [2024-10-12 21:02:50,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254440577] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:02:50,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:02:50,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:02:50,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068788761] [2024-10-12 21:02:50,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:02:50,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:02:50,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:02:50,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:02:50,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:02:50,743 INFO L87 Difference]: Start difference. First operand 2653 states and 4793 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-12 21:02:51,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:02:51,489 INFO L93 Difference]: Finished difference Result 3375 states and 5967 transitions. [2024-10-12 21:02:51,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:02:51,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-12 21:02:51,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:02:51,497 INFO L225 Difference]: With dead ends: 3375 [2024-10-12 21:02:51,497 INFO L226 Difference]: Without dead ends: 2854 [2024-10-12 21:02:51,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:02:51,499 INFO L432 NwaCegarLoop]: 4090 mSDtfsCounter, 4492 mSDsluCounter, 16226 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4505 SdHoareTripleChecker+Valid, 20316 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:02:51,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4505 Valid, 20316 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:02:51,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2024-10-12 21:02:51,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2653. [2024-10-12 21:02:51,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.8154024767801857) internal successors, (4691), 2588 states have internal predecessors, (4691), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2024-10-12 21:02:51,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4790 transitions. [2024-10-12 21:02:51,554 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4790 transitions. Word has length 91 [2024-10-12 21:02:51,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:02:51,554 INFO L471 AbstractCegarLoop]: Abstraction has 2653 states and 4790 transitions. [2024-10-12 21:02:51,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-12 21:02:51,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4790 transitions. [2024-10-12 21:02:51,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 21:02:51,555 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:02:51,556 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] [2024-10-12 21:02:51,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 21:02:51,556 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:02:51,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:02:51,556 INFO L85 PathProgramCache]: Analyzing trace with hash 523803065, now seen corresponding path program 1 times [2024-10-12 21:02:51,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:02:51,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651166601] [2024-10-12 21:02:51,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:02:51,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:02:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:51,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:02:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:51,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:02:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:51,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:02:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:51,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:02:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:51,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:02:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:02:51,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:02:51,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651166601] [2024-10-12 21:02:51,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651166601] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:02:51,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:02:51,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:02:51,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631171326] [2024-10-12 21:02:51,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:02:51,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:02:51,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:02:51,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:02:51,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:02:51,686 INFO L87 Difference]: Start difference. First operand 2653 states and 4790 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-12 21:02:52,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:02:52,417 INFO L93 Difference]: Finished difference Result 3371 states and 5950 transitions. [2024-10-12 21:02:52,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:02:52,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-12 21:02:52,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:02:52,426 INFO L225 Difference]: With dead ends: 3371 [2024-10-12 21:02:52,426 INFO L226 Difference]: Without dead ends: 2850 [2024-10-12 21:02:52,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:02:52,428 INFO L432 NwaCegarLoop]: 4090 mSDtfsCounter, 4490 mSDsluCounter, 16226 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4503 SdHoareTripleChecker+Valid, 20316 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:02:52,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4503 Valid, 20316 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:02:52,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2024-10-12 21:02:52,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2653. [2024-10-12 21:02:52,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.8142414860681115) internal successors, (4688), 2588 states have internal predecessors, (4688), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2024-10-12 21:02:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4787 transitions. [2024-10-12 21:02:52,490 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4787 transitions. Word has length 91 [2024-10-12 21:02:52,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:02:52,490 INFO L471 AbstractCegarLoop]: Abstraction has 2653 states and 4787 transitions. [2024-10-12 21:02:52,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-12 21:02:52,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4787 transitions. [2024-10-12 21:02:52,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 21:02:52,492 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:02:52,492 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] [2024-10-12 21:02:52,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 21:02:52,492 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:02:52,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:02:52,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1387239493, now seen corresponding path program 1 times [2024-10-12 21:02:52,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:02:52,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606178444] [2024-10-12 21:02:52,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:02:52,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:02:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:52,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:02:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:52,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:02:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:52,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:02:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:52,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:02:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:52,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:02:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:02:52,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:02:52,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606178444] [2024-10-12 21:02:52,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606178444] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:02:52,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:02:52,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:02:52,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089279546] [2024-10-12 21:02:52,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:02:52,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:02:52,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:02:52,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:02:52,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:02:52,628 INFO L87 Difference]: Start difference. First operand 2653 states and 4787 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-12 21:02:53,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:02:53,480 INFO L93 Difference]: Finished difference Result 3367 states and 5933 transitions. [2024-10-12 21:02:53,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:02:53,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-12 21:02:53,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:02:53,490 INFO L225 Difference]: With dead ends: 3367 [2024-10-12 21:02:53,490 INFO L226 Difference]: Without dead ends: 2846 [2024-10-12 21:02:53,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:02:53,494 INFO L432 NwaCegarLoop]: 4090 mSDtfsCounter, 4488 mSDsluCounter, 16226 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4501 SdHoareTripleChecker+Valid, 20316 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:02:53,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4501 Valid, 20316 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:02:53,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2024-10-12 21:02:53,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2653. [2024-10-12 21:02:53,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.813080495356037) internal successors, (4685), 2588 states have internal predecessors, (4685), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2024-10-12 21:02:53,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4784 transitions. [2024-10-12 21:02:53,577 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4784 transitions. Word has length 91 [2024-10-12 21:02:53,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:02:53,577 INFO L471 AbstractCegarLoop]: Abstraction has 2653 states and 4784 transitions. [2024-10-12 21:02:53,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-12 21:02:53,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4784 transitions. [2024-10-12 21:02:53,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 21:02:53,579 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:02:53,579 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] [2024-10-12 21:02:53,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 21:02:53,580 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:02:53,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:02:53,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1310338695, now seen corresponding path program 1 times [2024-10-12 21:02:53,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:02:53,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153059112] [2024-10-12 21:02:53,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:02:53,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:02:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:53,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:02:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:53,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:02:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:53,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:02:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:53,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:02:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:53,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:02:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:53,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:02:53,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:02:53,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153059112] [2024-10-12 21:02:53,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153059112] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:02:53,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:02:53,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:02:53,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659058952] [2024-10-12 21:02:53,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:02:53,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:02:53,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:02:53,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:02:53,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:02:53,748 INFO L87 Difference]: Start difference. First operand 2653 states and 4784 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-12 21:02:55,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:02:55,248 INFO L93 Difference]: Finished difference Result 3949 states and 6833 transitions. [2024-10-12 21:02:55,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:02:55,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-12 21:02:55,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:02:55,262 INFO L225 Difference]: With dead ends: 3949 [2024-10-12 21:02:55,262 INFO L226 Difference]: Without dead ends: 3428 [2024-10-12 21:02:55,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:02:55,266 INFO L432 NwaCegarLoop]: 4114 mSDtfsCounter, 4898 mSDsluCounter, 16369 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4916 SdHoareTripleChecker+Valid, 20483 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:02:55,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4916 Valid, 20483 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 21:02:55,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2024-10-12 21:02:55,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 2996. [2024-10-12 21:02:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2996 states, 2887 states have (on average 1.7852441981295462) internal successors, (5154), 2893 states have internal predecessors, (5154), 73 states have call successors, (73), 30 states have call predecessors, (73), 34 states have return successors, (86), 76 states have call predecessors, (86), 73 states have call successors, (86) [2024-10-12 21:02:55,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 5313 transitions. [2024-10-12 21:02:55,378 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 5313 transitions. Word has length 91 [2024-10-12 21:02:55,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:02:55,378 INFO L471 AbstractCegarLoop]: Abstraction has 2996 states and 5313 transitions. [2024-10-12 21:02:55,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-12 21:02:55,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 5313 transitions. [2024-10-12 21:02:55,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 21:02:55,380 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:02:55,380 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] [2024-10-12 21:02:55,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 21:02:55,381 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:02:55,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:02:55,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2017277947, now seen corresponding path program 1 times [2024-10-12 21:02:55,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:02:55,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654282742] [2024-10-12 21:02:55,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:02:55,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:02:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:55,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:02:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:55,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:02:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:55,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:02:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:55,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:02:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:55,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:02:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:02:55,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:02:55,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654282742] [2024-10-12 21:02:55,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654282742] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:02:55,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:02:55,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:02:55,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059773744] [2024-10-12 21:02:55,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:02:55,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:02:55,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:02:55,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:02:55,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:02:55,529 INFO L87 Difference]: Start difference. First operand 2996 states and 5313 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-12 21:02:57,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:02:57,593 INFO L93 Difference]: Finished difference Result 5232 states and 8832 transitions. [2024-10-12 21:02:57,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:02:57,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-12 21:02:57,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:02:57,634 INFO L225 Difference]: With dead ends: 5232 [2024-10-12 21:02:57,634 INFO L226 Difference]: Without dead ends: 4368 [2024-10-12 21:02:57,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:02:57,645 INFO L432 NwaCegarLoop]: 4205 mSDtfsCounter, 4697 mSDsluCounter, 16618 mSDsCounter, 0 mSdLazyCounter, 1987 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4708 SdHoareTripleChecker+Valid, 20823 SdHoareTripleChecker+Invalid, 2038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:02:57,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4708 Valid, 20823 Invalid, 2038 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 1987 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-12 21:02:57,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4368 states. [2024-10-12 21:02:57,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4368 to 3653. [2024-10-12 21:02:57,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 3466 states have (on average 1.7443739180611657) internal successors, (6046), 3476 states have internal predecessors, (6046), 123 states have call successors, (123), 54 states have call predecessors, (123), 62 states have return successors, (158), 130 states have call predecessors, (158), 123 states have call successors, (158) [2024-10-12 21:02:57,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 6327 transitions. [2024-10-12 21:02:57,833 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 6327 transitions. Word has length 91 [2024-10-12 21:02:57,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:02:57,834 INFO L471 AbstractCegarLoop]: Abstraction has 3653 states and 6327 transitions. [2024-10-12 21:02:57,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-12 21:02:57,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 6327 transitions. [2024-10-12 21:02:57,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 21:02:57,836 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:02:57,836 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] [2024-10-12 21:02:57,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 21:02:57,836 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:02:57,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:02:57,837 INFO L85 PathProgramCache]: Analyzing trace with hash -369231559, now seen corresponding path program 1 times [2024-10-12 21:02:57,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:02:57,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135707455] [2024-10-12 21:02:57,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:02:57,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:02:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:57,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:02:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:57,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:02:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:57,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:02:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:57,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:02:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:57,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:02:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:57,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:02:57,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:02:57,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135707455] [2024-10-12 21:02:57,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135707455] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:02:57,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:02:57,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:02:57,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512201780] [2024-10-12 21:02:57,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:02:57,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:02:57,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:02:57,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:02:57,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:02:57,958 INFO L87 Difference]: Start difference. First operand 3653 states and 6327 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-12 21:02:59,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:02:59,394 INFO L93 Difference]: Finished difference Result 7675 states and 12640 transitions. [2024-10-12 21:02:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:02:59,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-12 21:02:59,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:02:59,408 INFO L225 Difference]: With dead ends: 7675 [2024-10-12 21:02:59,409 INFO L226 Difference]: Without dead ends: 6154 [2024-10-12 21:02:59,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:02:59,414 INFO L432 NwaCegarLoop]: 4206 mSDtfsCounter, 4778 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4796 SdHoareTripleChecker+Valid, 20827 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:02:59,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4796 Valid, 20827 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 21:02:59,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2024-10-12 21:02:59,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 4986. [2024-10-12 21:02:59,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4986 states, 4647 states have (on average 1.6931353561437485) internal successors, (7868), 4665 states have internal predecessors, (7868), 219 states have call successors, (219), 102 states have call predecessors, (219), 118 states have return successors, (316), 234 states have call predecessors, (316), 219 states have call successors, (316) [2024-10-12 21:02:59,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4986 states to 4986 states and 8403 transitions. [2024-10-12 21:02:59,573 INFO L78 Accepts]: Start accepts. Automaton has 4986 states and 8403 transitions. Word has length 91 [2024-10-12 21:02:59,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:02:59,573 INFO L471 AbstractCegarLoop]: Abstraction has 4986 states and 8403 transitions. [2024-10-12 21:02:59,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-12 21:02:59,574 INFO L276 IsEmpty]: Start isEmpty. Operand 4986 states and 8403 transitions. [2024-10-12 21:02:59,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 21:02:59,576 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:02:59,576 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] [2024-10-12 21:02:59,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 21:02:59,576 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:02:59,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:02:59,576 INFO L85 PathProgramCache]: Analyzing trace with hash -861857733, now seen corresponding path program 1 times [2024-10-12 21:02:59,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:02:59,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820561982] [2024-10-12 21:02:59,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:02:59,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:02:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:59,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:02:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:59,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:02:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:59,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:02:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:59,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:02:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:59,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:02:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:02:59,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:02:59,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:02:59,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820561982] [2024-10-12 21:02:59,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820561982] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:02:59,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:02:59,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:02:59,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681841644] [2024-10-12 21:02:59,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:02:59,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:02:59,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:02:59,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:02:59,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:02:59,693 INFO L87 Difference]: Start difference. First operand 4986 states and 8403 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-12 21:03:01,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:03:01,540 INFO L93 Difference]: Finished difference Result 12494 states and 20210 transitions. [2024-10-12 21:03:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:03:01,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-12 21:03:01,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:03:01,563 INFO L225 Difference]: With dead ends: 12494 [2024-10-12 21:03:01,563 INFO L226 Difference]: Without dead ends: 9640 [2024-10-12 21:03:01,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:03:01,573 INFO L432 NwaCegarLoop]: 4206 mSDtfsCounter, 4748 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4766 SdHoareTripleChecker+Valid, 20827 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:03:01,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4766 Valid, 20827 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 21:03:01,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9640 states. [2024-10-12 21:03:01,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9640 to 7651. [2024-10-12 21:03:01,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7651 states, 7016 states have (on average 1.6428164196123147) internal successors, (11526), 7050 states have internal predecessors, (11526), 403 states have call successors, (403), 198 states have call predecessors, (403), 230 states have return successors, (678), 434 states have call predecessors, (678), 403 states have call successors, (678) [2024-10-12 21:03:01,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7651 states to 7651 states and 12607 transitions. [2024-10-12 21:03:01,875 INFO L78 Accepts]: Start accepts. Automaton has 7651 states and 12607 transitions. Word has length 91 [2024-10-12 21:03:01,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:03:01,875 INFO L471 AbstractCegarLoop]: Abstraction has 7651 states and 12607 transitions. [2024-10-12 21:03:01,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-12 21:03:01,876 INFO L276 IsEmpty]: Start isEmpty. Operand 7651 states and 12607 transitions. [2024-10-12 21:03:01,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 21:03:01,880 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:03:01,880 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] [2024-10-12 21:03:01,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 21:03:01,881 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:03:01,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:03:01,881 INFO L85 PathProgramCache]: Analyzing trace with hash 92082425, now seen corresponding path program 1 times [2024-10-12 21:03:01,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:03:01,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714817300] [2024-10-12 21:03:01,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:03:01,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:03:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:01,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:03:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:01,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:03:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:02,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:03:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:02,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:03:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:02,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:03:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:03:02,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:03:02,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714817300] [2024-10-12 21:03:02,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714817300] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:03:02,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:03:02,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:03:02,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773516396] [2024-10-12 21:03:02,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:03:02,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:03:02,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:03:02,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:03:02,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:03:02,017 INFO L87 Difference]: Start difference. First operand 7651 states and 12607 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-12 21:03:03,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:03:03,941 INFO L93 Difference]: Finished difference Result 21475 states and 34508 transitions. [2024-10-12 21:03:03,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:03:03,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-12 21:03:03,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:03:03,982 INFO L225 Difference]: With dead ends: 21475 [2024-10-12 21:03:03,983 INFO L226 Difference]: Without dead ends: 15956 [2024-10-12 21:03:03,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:03:03,996 INFO L432 NwaCegarLoop]: 4206 mSDtfsCounter, 4670 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4688 SdHoareTripleChecker+Valid, 20827 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:03:03,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4688 Valid, 20827 Invalid, 1696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:03:04,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15956 states. [2024-10-12 21:03:04,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15956 to 13013. [2024-10-12 21:03:04,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13013 states, 11802 states have (on average 1.6046432807998645) internal successors, (18938), 11868 states have internal predecessors, (18938), 755 states have call successors, (755), 390 states have call predecessors, (755), 454 states have return successors, (1548), 818 states have call predecessors, (1548), 755 states have call successors, (1548) [2024-10-12 21:03:04,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13013 states to 13013 states and 21241 transitions. [2024-10-12 21:03:04,549 INFO L78 Accepts]: Start accepts. Automaton has 13013 states and 21241 transitions. Word has length 91 [2024-10-12 21:03:04,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:03:04,549 INFO L471 AbstractCegarLoop]: Abstraction has 13013 states and 21241 transitions. [2024-10-12 21:03:04,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-12 21:03:04,550 INFO L276 IsEmpty]: Start isEmpty. Operand 13013 states and 21241 transitions. [2024-10-12 21:03:04,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 21:03:04,557 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:03:04,557 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] [2024-10-12 21:03:04,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 21:03:04,558 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:03:04,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:03:04,558 INFO L85 PathProgramCache]: Analyzing trace with hash -639885001, now seen corresponding path program 1 times [2024-10-12 21:03:04,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:03:04,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599737348] [2024-10-12 21:03:04,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:03:04,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:03:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:04,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:03:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:04,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:03:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:04,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:03:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:04,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:03:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:04,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:03:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:04,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:03:04,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:03:04,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599737348] [2024-10-12 21:03:04,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599737348] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:03:04,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:03:04,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:03:04,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903147391] [2024-10-12 21:03:04,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:03:04,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:03:04,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:03:04,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:03:04,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:03:04,653 INFO L87 Difference]: Start difference. First operand 13013 states and 21241 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-12 21:03:06,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:03:06,967 INFO L93 Difference]: Finished difference Result 33124 states and 53179 transitions. [2024-10-12 21:03:06,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:03:06,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2024-10-12 21:03:06,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:03:07,021 INFO L225 Difference]: With dead ends: 33124 [2024-10-12 21:03:07,021 INFO L226 Difference]: Without dead ends: 22244 [2024-10-12 21:03:07,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-12 21:03:07,049 INFO L432 NwaCegarLoop]: 4249 mSDtfsCounter, 4875 mSDsluCounter, 12381 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4906 SdHoareTripleChecker+Valid, 16630 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:03:07,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4906 Valid, 16630 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 21:03:07,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22244 states. [2024-10-12 21:03:07,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22244 to 18457. [2024-10-12 21:03:07,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18457 states, 16617 states have (on average 1.5798278871035687) internal successors, (26252), 16748 states have internal predecessors, (26252), 1154 states have call successors, (1154), 588 states have call predecessors, (1154), 684 states have return successors, (2191), 1184 states have call predecessors, (2191), 1154 states have call successors, (2191) [2024-10-12 21:03:08,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18457 states to 18457 states and 29597 transitions. [2024-10-12 21:03:08,011 INFO L78 Accepts]: Start accepts. Automaton has 18457 states and 29597 transitions. Word has length 91 [2024-10-12 21:03:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:03:08,012 INFO L471 AbstractCegarLoop]: Abstraction has 18457 states and 29597 transitions. [2024-10-12 21:03:08,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-12 21:03:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 18457 states and 29597 transitions. [2024-10-12 21:03:08,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-12 21:03:08,037 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:03:08,037 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:03:08,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 21:03:08,037 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:03:08,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:03:08,038 INFO L85 PathProgramCache]: Analyzing trace with hash 239471349, now seen corresponding path program 1 times [2024-10-12 21:03:08,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:03:08,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839797063] [2024-10-12 21:03:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:03:08,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:03:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:08,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:03:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:08,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:03:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:08,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:03:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:08,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:03:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:08,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:03:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:08,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-12 21:03:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:08,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:03:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:08,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-12 21:03:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 21:03:08,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:03:08,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839797063] [2024-10-12 21:03:08,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839797063] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:03:08,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148085282] [2024-10-12 21:03:08,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:03:08,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:03:08,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:03:08,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:03:08,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 21:03:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:08,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 21:03:08,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:03:08,356 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 21:03:08,358 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:03:08,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148085282] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:03:08,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:03:08,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-12 21:03:08,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876505750] [2024-10-12 21:03:08,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:03:08,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:03:08,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:03:08,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:03:08,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:03:08,360 INFO L87 Difference]: Start difference. First operand 18457 states and 29597 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:03:09,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:03:09,966 INFO L93 Difference]: Finished difference Result 50706 states and 80639 transitions. [2024-10-12 21:03:09,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:03:09,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2024-10-12 21:03:09,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:03:10,051 INFO L225 Difference]: With dead ends: 50706 [2024-10-12 21:03:10,052 INFO L226 Difference]: Without dead ends: 34382 [2024-10-12 21:03:10,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:03:10,082 INFO L432 NwaCegarLoop]: 4218 mSDtfsCounter, 4191 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4191 SdHoareTripleChecker+Valid, 4457 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:03:10,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4191 Valid, 4457 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:03:10,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34382 states. [2024-10-12 21:03:12,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34382 to 34282. [2024-10-12 21:03:12,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34282 states, 30710 states have (on average 1.557896450667535) internal successors, (47843), 30970 states have internal predecessors, (47843), 2204 states have call successors, (2204), 1174 states have call predecessors, (2204), 1366 states have return successors, (4215), 2201 states have call predecessors, (4215), 2204 states have call successors, (4215) [2024-10-12 21:03:12,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34282 states to 34282 states and 54262 transitions. [2024-10-12 21:03:12,348 INFO L78 Accepts]: Start accepts. Automaton has 34282 states and 54262 transitions. Word has length 147 [2024-10-12 21:03:12,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:03:12,348 INFO L471 AbstractCegarLoop]: Abstraction has 34282 states and 54262 transitions. [2024-10-12 21:03:12,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:03:12,349 INFO L276 IsEmpty]: Start isEmpty. Operand 34282 states and 54262 transitions. [2024-10-12 21:03:12,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-12 21:03:12,405 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:03:12,405 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:03:12,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 21:03:12,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 21:03:12,610 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:03:12,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:03:12,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1225510413, now seen corresponding path program 1 times [2024-10-12 21:03:12,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:03:12,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462896662] [2024-10-12 21:03:12,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:03:12,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:03:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:12,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:03:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:12,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:03:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:12,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:03:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:12,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:03:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:12,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:03:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:12,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-12 21:03:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:12,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:03:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:12,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-12 21:03:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 21:03:12,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:03:12,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462896662] [2024-10-12 21:03:12,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462896662] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:03:12,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993877327] [2024-10-12 21:03:12,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:03:12,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:03:12,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:03:12,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:03:12,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 21:03:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:12,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 21:03:12,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:03:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-12 21:03:12,952 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:03:12,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993877327] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:03:12,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:03:12,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-12 21:03:12,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299664553] [2024-10-12 21:03:12,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:03:12,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:03:12,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:03:12,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:03:12,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:03:12,956 INFO L87 Difference]: Start difference. First operand 34282 states and 54262 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:03:16,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:03:16,797 INFO L93 Difference]: Finished difference Result 97981 states and 154794 transitions. [2024-10-12 21:03:16,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:03:16,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2024-10-12 21:03:16,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:03:16,972 INFO L225 Difference]: With dead ends: 97981 [2024-10-12 21:03:16,972 INFO L226 Difference]: Without dead ends: 65832 [2024-10-12 21:03:17,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:03:17,033 INFO L432 NwaCegarLoop]: 4218 mSDtfsCounter, 4181 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4181 SdHoareTripleChecker+Valid, 4457 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:03:17,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4181 Valid, 4457 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:03:17,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65832 states. [2024-10-12 21:03:20,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65832 to 65634. [2024-10-12 21:03:20,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65634 states, 58600 states have (on average 1.543259385665529) internal successors, (90435), 59118 states have internal predecessors, (90435), 4302 states have call successors, (4302), 2346 states have call predecessors, (4302), 2730 states have return successors, (8261), 4233 states have call predecessors, (8261), 4302 states have call successors, (8261) [2024-10-12 21:03:21,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65634 states to 65634 states and 102998 transitions. [2024-10-12 21:03:21,112 INFO L78 Accepts]: Start accepts. Automaton has 65634 states and 102998 transitions. Word has length 147 [2024-10-12 21:03:21,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:03:21,112 INFO L471 AbstractCegarLoop]: Abstraction has 65634 states and 102998 transitions. [2024-10-12 21:03:21,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:03:21,113 INFO L276 IsEmpty]: Start isEmpty. Operand 65634 states and 102998 transitions. [2024-10-12 21:03:21,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-12 21:03:21,177 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:03:21,177 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:03:21,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 21:03:21,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-12 21:03:21,379 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:03:21,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:03:21,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1385782897, now seen corresponding path program 1 times [2024-10-12 21:03:21,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:03:21,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146302156] [2024-10-12 21:03:21,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:03:21,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:03:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:21,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:03:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:21,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:03:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:21,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:03:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:21,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:03:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:21,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:03:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:21,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-12 21:03:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:21,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:03:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:21,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-12 21:03:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:21,477 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 21:03:21,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:03:21,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146302156] [2024-10-12 21:03:21,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146302156] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:03:21,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973643985] [2024-10-12 21:03:21,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:03:21,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:03:21,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:03:21,479 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:03:21,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 21:03:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:03:21,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 21:03:21,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:03:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-12 21:03:21,625 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:03:21,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973643985] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:03:21,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:03:21,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-12 21:03:21,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598923888] [2024-10-12 21:03:21,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:03:21,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:03:21,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:03:21,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:03:21,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:03:21,627 INFO L87 Difference]: Start difference. First operand 65634 states and 102998 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)