./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label34.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label34.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya --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 89a08756b3eab9814257e3e9611de0e641c56712e4759aba21bf6c0b258f779c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:01:32,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:01:32,324 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:01:32,328 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:01:32,328 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:01:32,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:01:32,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:01:32,352 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:01:32,353 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:01:32,353 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:01:32,354 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:01:32,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:01:32,355 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:01:32,356 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:01:32,356 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:01:32,357 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:01:32,357 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:01:32,358 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:01:32,358 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:01:32,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:01:32,359 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:01:32,360 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:01:32,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:01:32,361 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:01:32,362 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:01:32,362 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:01:32,362 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:01:32,363 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:01:32,364 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:01:32,364 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:01:32,364 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:01:32,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:01:32,365 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:01:32,365 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:01:32,366 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:01:32,366 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:01:32,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:01:32,366 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:01:32,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:01:32,367 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:01:32,367 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:01:32,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:01:32,367 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89a08756b3eab9814257e3e9611de0e641c56712e4759aba21bf6c0b258f779c [2023-11-29 05:01:32,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:01:32,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:01:32,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:01:32,594 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:01:32,595 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:01:32,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/eca-rers2012/Problem03_label34.c [2023-11-29 05:01:35,353 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:01:35,633 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:01:35,634 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/sv-benchmarks/c/eca-rers2012/Problem03_label34.c [2023-11-29 05:01:35,648 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/data/57e566eed/56aec65c17564bf6bc82492f25c23d9a/FLAG9de76c613 [2023-11-29 05:01:35,660 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/data/57e566eed/56aec65c17564bf6bc82492f25c23d9a [2023-11-29 05:01:35,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:01:35,664 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:01:35,665 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:01:35,666 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:01:35,671 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:01:35,671 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:01:35" (1/1) ... [2023-11-29 05:01:35,672 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589baec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:35, skipping insertion in model container [2023-11-29 05:01:35,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:01:35" (1/1) ... [2023-11-29 05:01:35,730 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:01:36,183 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/sv-benchmarks/c/eca-rers2012/Problem03_label34.c[59879,59892] [2023-11-29 05:01:36,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:01:36,217 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:01:36,391 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/sv-benchmarks/c/eca-rers2012/Problem03_label34.c[59879,59892] [2023-11-29 05:01:36,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:01:36,423 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:01:36,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:36 WrapperNode [2023-11-29 05:01:36,424 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:01:36,425 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:01:36,425 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:01:36,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:01:36,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:36" (1/1) ... [2023-11-29 05:01:36,459 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:36" (1/1) ... [2023-11-29 05:01:36,542 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2023-11-29 05:01:36,543 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:01:36,543 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:01:36,543 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:01:36,544 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:01:36,555 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:36" (1/1) ... [2023-11-29 05:01:36,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:36" (1/1) ... [2023-11-29 05:01:36,568 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:36" (1/1) ... [2023-11-29 05:01:36,630 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]. [2023-11-29 05:01:36,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:36" (1/1) ... [2023-11-29 05:01:36,630 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:36" (1/1) ... [2023-11-29 05:01:36,669 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:36" (1/1) ... [2023-11-29 05:01:36,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:36" (1/1) ... [2023-11-29 05:01:36,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:36" (1/1) ... [2023-11-29 05:01:36,697 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:36" (1/1) ... [2023-11-29 05:01:36,730 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:01:36,731 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:01:36,731 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:01:36,731 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:01:36,732 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:36" (1/1) ... [2023-11-29 05:01:36,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:01:36,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:01:36,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:01:36,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:01:36,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:01:36,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:01:36,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:01:36,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:01:36,869 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:01:36,871 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:01:38,501 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:01:38,556 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:01:38,557 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:01:38,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:01:38 BoogieIcfgContainer [2023-11-29 05:01:38,557 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:01:38,560 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:01:38,560 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:01:38,585 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:01:38,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:01:35" (1/3) ... [2023-11-29 05:01:38,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59de13c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:01:38, skipping insertion in model container [2023-11-29 05:01:38,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:01:36" (2/3) ... [2023-11-29 05:01:38,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59de13c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:01:38, skipping insertion in model container [2023-11-29 05:01:38,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:01:38" (3/3) ... [2023-11-29 05:01:38,588 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label34.c [2023-11-29 05:01:38,607 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:01:38,608 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:01:38,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:01:38,676 INFO L357 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, mHoare=true, 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;@37a81fa2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:01:38,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:01:38,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:38,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-29 05:01:38,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:01:38,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:38,700 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:01:38,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:38,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1178120330, now seen corresponding path program 1 times [2023-11-29 05:01:38,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:38,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353048413] [2023-11-29 05:01:38,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:38,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:01:39,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:39,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353048413] [2023-11-29 05:01:39,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353048413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:39,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:39,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:01:39,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692933384] [2023-11-29 05:01:39,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:39,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 05:01:39,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:39,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 05:01:39,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:01:39,206 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:39,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:01:39,251 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-11-29 05:01:39,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 05:01:39,254 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2023-11-29 05:01:39,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:01:39,265 INFO L225 Difference]: With dead ends: 479 [2023-11-29 05:01:39,265 INFO L226 Difference]: Without dead ends: 238 [2023-11-29 05:01:39,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:01:39,272 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:01:39,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:01:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-29 05:01:39,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-11-29 05:01:39,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:39,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-11-29 05:01:39,327 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 189 [2023-11-29 05:01:39,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:01:39,328 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-11-29 05:01:39,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:39,329 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-11-29 05:01:39,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-29 05:01:39,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:01:39,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:39,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:01:39,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:01:39,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:39,335 INFO L85 PathProgramCache]: Analyzing trace with hash -752658120, now seen corresponding path program 1 times [2023-11-29 05:01:39,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:39,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536413946] [2023-11-29 05:01:39,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:39,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:39,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:01:39,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:39,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536413946] [2023-11-29 05:01:39,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536413946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:39,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:39,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:01:39,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206329476] [2023-11-29 05:01:39,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:39,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:01:39,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:39,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:01:39,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:01:39,858 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:40,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:01:40,810 INFO L93 Difference]: Finished difference Result 698 states and 1151 transitions. [2023-11-29 05:01:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:01:40,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2023-11-29 05:01:40,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:01:40,815 INFO L225 Difference]: With dead ends: 698 [2023-11-29 05:01:40,815 INFO L226 Difference]: Without dead ends: 461 [2023-11-29 05:01:40,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:01:40,819 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 66 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:01:40,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 148 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 05:01:40,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-11-29 05:01:40,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 459. [2023-11-29 05:01:40,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.539301310043668) internal successors, (705), 458 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:40,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 705 transitions. [2023-11-29 05:01:40,845 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 705 transitions. Word has length 189 [2023-11-29 05:01:40,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:01:40,846 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 705 transitions. [2023-11-29 05:01:40,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:40,846 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 705 transitions. [2023-11-29 05:01:40,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-29 05:01:40,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:01:40,851 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:40,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:01:40,852 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:01:40,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:40,853 INFO L85 PathProgramCache]: Analyzing trace with hash 44504215, now seen corresponding path program 1 times [2023-11-29 05:01:40,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:40,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668327097] [2023-11-29 05:01:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:40,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:41,089 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:01:41,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:41,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668327097] [2023-11-29 05:01:41,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668327097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:41,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:41,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:01:41,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61465369] [2023-11-29 05:01:41,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:41,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:01:41,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:41,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:01:41,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:01:41,093 INFO L87 Difference]: Start difference. First operand 459 states and 705 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:41,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:01:41,961 INFO L93 Difference]: Finished difference Result 1343 states and 2078 transitions. [2023-11-29 05:01:41,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:01:41,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2023-11-29 05:01:41,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:01:41,968 INFO L225 Difference]: With dead ends: 1343 [2023-11-29 05:01:41,968 INFO L226 Difference]: Without dead ends: 885 [2023-11-29 05:01:41,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:01:41,971 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:01:41,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 90 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:01:41,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-11-29 05:01:42,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 869. [2023-11-29 05:01:42,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 868 states have (on average 1.512672811059908) internal successors, (1313), 868 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:42,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1313 transitions. [2023-11-29 05:01:42,012 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1313 transitions. Word has length 197 [2023-11-29 05:01:42,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:01:42,013 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1313 transitions. [2023-11-29 05:01:42,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:42,013 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1313 transitions. [2023-11-29 05:01:42,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-29 05:01:42,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:01:42,019 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:42,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:01:42,019 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:01:42,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:42,020 INFO L85 PathProgramCache]: Analyzing trace with hash 925949310, now seen corresponding path program 1 times [2023-11-29 05:01:42,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:42,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268106990] [2023-11-29 05:01:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:42,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 05:01:42,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:42,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268106990] [2023-11-29 05:01:42,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268106990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:42,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:42,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:01:42,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367929655] [2023-11-29 05:01:42,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:42,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:01:42,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:42,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:01:42,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:01:42,381 INFO L87 Difference]: Start difference. First operand 869 states and 1313 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:43,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:01:43,283 INFO L93 Difference]: Finished difference Result 2553 states and 3868 transitions. [2023-11-29 05:01:43,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:01:43,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2023-11-29 05:01:43,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:01:43,291 INFO L225 Difference]: With dead ends: 2553 [2023-11-29 05:01:43,291 INFO L226 Difference]: Without dead ends: 1685 [2023-11-29 05:01:43,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:01:43,294 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 232 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:01:43,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 414 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 05:01:43,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2023-11-29 05:01:43,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1683. [2023-11-29 05:01:43,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.3365041617122473) internal successors, (2248), 1682 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:43,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2248 transitions. [2023-11-29 05:01:43,330 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2248 transitions. Word has length 209 [2023-11-29 05:01:43,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:01:43,330 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 2248 transitions. [2023-11-29 05:01:43,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:43,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2248 transitions. [2023-11-29 05:01:43,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-29 05:01:43,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:01:43,335 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:43,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:01:43,336 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:01:43,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:43,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1355238945, now seen corresponding path program 1 times [2023-11-29 05:01:43,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:43,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492314098] [2023-11-29 05:01:43,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:43,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:01:43,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:43,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492314098] [2023-11-29 05:01:43,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492314098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:43,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:43,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:01:43,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255717918] [2023-11-29 05:01:43,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:43,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:01:43,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:43,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:01:43,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:01:43,581 INFO L87 Difference]: Start difference. First operand 1683 states and 2248 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:44,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:01:44,426 INFO L93 Difference]: Finished difference Result 5016 states and 6706 transitions. [2023-11-29 05:01:44,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:01:44,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2023-11-29 05:01:44,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:01:44,442 INFO L225 Difference]: With dead ends: 5016 [2023-11-29 05:01:44,442 INFO L226 Difference]: Without dead ends: 3334 [2023-11-29 05:01:44,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:01:44,445 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 259 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:01:44,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 121 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:01:44,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2023-11-29 05:01:44,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 3325. [2023-11-29 05:01:44,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3325 states, 3324 states have (on average 1.3231046931407942) internal successors, (4398), 3324 states have internal predecessors, (4398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:44,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 4398 transitions. [2023-11-29 05:01:44,542 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 4398 transitions. Word has length 212 [2023-11-29 05:01:44,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:01:44,542 INFO L495 AbstractCegarLoop]: Abstraction has 3325 states and 4398 transitions. [2023-11-29 05:01:44,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:44,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 4398 transitions. [2023-11-29 05:01:44,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-11-29 05:01:44,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:01:44,552 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:44,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:01:44,552 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:01:44,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:44,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1288735549, now seen corresponding path program 1 times [2023-11-29 05:01:44,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:44,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378585475] [2023-11-29 05:01:44,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:44,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:01:44,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:44,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378585475] [2023-11-29 05:01:44,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378585475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:44,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:44,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:01:44,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716139843] [2023-11-29 05:01:44,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:44,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:01:44,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:44,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:01:44,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:01:44,823 INFO L87 Difference]: Start difference. First operand 3325 states and 4398 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:45,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:01:45,655 INFO L93 Difference]: Finished difference Result 9927 states and 13144 transitions. [2023-11-29 05:01:45,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:01:45,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2023-11-29 05:01:45,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:01:45,691 INFO L225 Difference]: With dead ends: 9927 [2023-11-29 05:01:45,691 INFO L226 Difference]: Without dead ends: 6603 [2023-11-29 05:01:45,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:01:45,698 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 219 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:01:45,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 165 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:01:45,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6603 states. [2023-11-29 05:01:45,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6603 to 5767. [2023-11-29 05:01:45,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 5766 states have (on average 1.3371488033298646) internal successors, (7710), 5766 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:45,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 7710 transitions. [2023-11-29 05:01:45,853 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 7710 transitions. Word has length 215 [2023-11-29 05:01:45,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:01:45,854 INFO L495 AbstractCegarLoop]: Abstraction has 5767 states and 7710 transitions. [2023-11-29 05:01:45,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:45,854 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 7710 transitions. [2023-11-29 05:01:45,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-29 05:01:45,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:01:45,867 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:45,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:01:45,867 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:01:45,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:45,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1207004714, now seen corresponding path program 1 times [2023-11-29 05:01:45,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:45,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707095418] [2023-11-29 05:01:45,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:45,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 05:01:46,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:46,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707095418] [2023-11-29 05:01:46,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707095418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:46,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:46,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:01:46,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794356597] [2023-11-29 05:01:46,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:46,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:01:46,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:46,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:01:46,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:01:46,237 INFO L87 Difference]: Start difference. First operand 5767 states and 7710 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:47,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:01:47,078 INFO L93 Difference]: Finished difference Result 14590 states and 19419 transitions. [2023-11-29 05:01:47,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:01:47,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2023-11-29 05:01:47,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:01:47,109 INFO L225 Difference]: With dead ends: 14590 [2023-11-29 05:01:47,110 INFO L226 Difference]: Without dead ends: 8824 [2023-11-29 05:01:47,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:01:47,117 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 202 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:01:47,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 418 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:01:47,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8824 states. [2023-11-29 05:01:47,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8824 to 8820. [2023-11-29 05:01:47,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8820 states, 8819 states have (on average 1.2787164077559814) internal successors, (11277), 8819 states have internal predecessors, (11277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:47,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8820 states to 8820 states and 11277 transitions. [2023-11-29 05:01:47,367 INFO L78 Accepts]: Start accepts. Automaton has 8820 states and 11277 transitions. Word has length 224 [2023-11-29 05:01:47,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:01:47,367 INFO L495 AbstractCegarLoop]: Abstraction has 8820 states and 11277 transitions. [2023-11-29 05:01:47,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:47,368 INFO L276 IsEmpty]: Start isEmpty. Operand 8820 states and 11277 transitions. [2023-11-29 05:01:47,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-29 05:01:47,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:01:47,380 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:47,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:01:47,380 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:01:47,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:47,380 INFO L85 PathProgramCache]: Analyzing trace with hash -665975896, now seen corresponding path program 1 times [2023-11-29 05:01:47,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:47,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199037994] [2023-11-29 05:01:47,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:47,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:01:47,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:47,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199037994] [2023-11-29 05:01:47,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199037994] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:01:47,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82157421] [2023-11-29 05:01:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:47,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:01:47,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:01:47,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:01:47,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:01:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:47,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:01:47,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:01:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-29 05:01:48,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:01:48,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82157421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:48,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:01:48,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-11-29 05:01:48,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574155999] [2023-11-29 05:01:48,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:48,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:01:48,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:48,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:01:48,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:01:48,219 INFO L87 Difference]: Start difference. First operand 8820 states and 11277 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:49,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:01:49,033 INFO L93 Difference]: Finished difference Result 22146 states and 28842 transitions. [2023-11-29 05:01:49,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:01:49,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 226 [2023-11-29 05:01:49,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:01:49,075 INFO L225 Difference]: With dead ends: 22146 [2023-11-29 05:01:49,076 INFO L226 Difference]: Without dead ends: 13327 [2023-11-29 05:01:49,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:01:49,084 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 79 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:01:49,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 132 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:01:49,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13327 states. [2023-11-29 05:01:49,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13327 to 13315. [2023-11-29 05:01:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13315 states, 13314 states have (on average 1.2828601472134595) internal successors, (17080), 13314 states have internal predecessors, (17080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:49,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 17080 transitions. [2023-11-29 05:01:49,337 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 17080 transitions. Word has length 226 [2023-11-29 05:01:49,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:01:49,338 INFO L495 AbstractCegarLoop]: Abstraction has 13315 states and 17080 transitions. [2023-11-29 05:01:49,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:49,338 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 17080 transitions. [2023-11-29 05:01:49,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-11-29 05:01:49,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:01:49,359 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:49,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:01:49,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:01:49,560 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:01:49,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:49,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1523662325, now seen corresponding path program 1 times [2023-11-29 05:01:49,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:49,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790763507] [2023-11-29 05:01:49,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:49,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:01:49,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:49,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790763507] [2023-11-29 05:01:49,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790763507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:49,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:49,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:01:49,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083574106] [2023-11-29 05:01:49,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:49,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:01:49,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:49,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:01:49,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:01:49,994 INFO L87 Difference]: Start difference. First operand 13315 states and 17080 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:50,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:01:50,852 INFO L93 Difference]: Finished difference Result 31752 states and 40753 transitions. [2023-11-29 05:01:50,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:01:50,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230 [2023-11-29 05:01:50,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:01:50,875 INFO L225 Difference]: With dead ends: 31752 [2023-11-29 05:01:50,875 INFO L226 Difference]: Without dead ends: 18438 [2023-11-29 05:01:50,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:01:50,886 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 197 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:01:50,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 173 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:01:50,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18438 states. [2023-11-29 05:01:51,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18438 to 18420. [2023-11-29 05:01:51,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18420 states, 18419 states have (on average 1.274770617297356) internal successors, (23480), 18419 states have internal predecessors, (23480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:51,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18420 states to 18420 states and 23480 transitions. [2023-11-29 05:01:51,119 INFO L78 Accepts]: Start accepts. Automaton has 18420 states and 23480 transitions. Word has length 230 [2023-11-29 05:01:51,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:01:51,119 INFO L495 AbstractCegarLoop]: Abstraction has 18420 states and 23480 transitions. [2023-11-29 05:01:51,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:51,120 INFO L276 IsEmpty]: Start isEmpty. Operand 18420 states and 23480 transitions. [2023-11-29 05:01:51,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-11-29 05:01:51,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:01:51,139 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:51,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:01:51,140 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:01:51,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:51,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2014180228, now seen corresponding path program 1 times [2023-11-29 05:01:51,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:51,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099478962] [2023-11-29 05:01:51,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:51,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:01:51,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:51,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099478962] [2023-11-29 05:01:51,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099478962] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:01:51,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612362837] [2023-11-29 05:01:51,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:51,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:01:51,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:01:51,586 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:01:51,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:01:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:51,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:01:51,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:01:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:01:51,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:01:51,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612362837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:51,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:01:51,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-29 05:01:51,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529715291] [2023-11-29 05:01:51,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:51,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:01:51,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:51,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:01:51,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:01:51,933 INFO L87 Difference]: Start difference. First operand 18420 states and 23480 transitions. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:53,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:01:53,218 INFO L93 Difference]: Finished difference Result 51668 states and 67366 transitions. [2023-11-29 05:01:53,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:01:53,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2023-11-29 05:01:53,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:01:53,265 INFO L225 Difference]: With dead ends: 51668 [2023-11-29 05:01:53,266 INFO L226 Difference]: Without dead ends: 33249 [2023-11-29 05:01:53,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:01:53,281 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 584 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:01:53,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 183 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 05:01:53,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33249 states. [2023-11-29 05:01:53,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33249 to 33239. [2023-11-29 05:01:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33239 states, 33238 states have (on average 1.2033816715807208) internal successors, (39998), 33238 states have internal predecessors, (39998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33239 states to 33239 states and 39998 transitions. [2023-11-29 05:01:53,661 INFO L78 Accepts]: Start accepts. Automaton has 33239 states and 39998 transitions. Word has length 237 [2023-11-29 05:01:53,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:01:53,661 INFO L495 AbstractCegarLoop]: Abstraction has 33239 states and 39998 transitions. [2023-11-29 05:01:53,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:53,661 INFO L276 IsEmpty]: Start isEmpty. Operand 33239 states and 39998 transitions. [2023-11-29 05:01:53,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-11-29 05:01:53,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:01:53,688 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:53,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:01:53,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 05:01:53,889 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:01:53,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:53,889 INFO L85 PathProgramCache]: Analyzing trace with hash -612997379, now seen corresponding path program 1 times [2023-11-29 05:01:53,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:53,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917982738] [2023-11-29 05:01:53,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:53,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 05:01:54,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:54,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917982738] [2023-11-29 05:01:54,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917982738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:54,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:54,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:01:54,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955100420] [2023-11-29 05:01:54,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:54,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:01:54,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:54,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:01:54,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:01:54,193 INFO L87 Difference]: Start difference. First operand 33239 states and 39998 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:55,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:01:55,267 INFO L93 Difference]: Finished difference Result 79004 states and 95627 transitions. [2023-11-29 05:01:55,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:01:55,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2023-11-29 05:01:55,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:01:55,322 INFO L225 Difference]: With dead ends: 79004 [2023-11-29 05:01:55,323 INFO L226 Difference]: Without dead ends: 45969 [2023-11-29 05:01:55,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:01:55,339 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 585 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:01:55,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 52 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 05:01:55,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45969 states. [2023-11-29 05:01:55,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45969 to 43330. [2023-11-29 05:01:55,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43330 states, 43329 states have (on average 1.1515151515151516) internal successors, (49894), 43329 states have internal predecessors, (49894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:55,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43330 states to 43330 states and 49894 transitions. [2023-11-29 05:01:55,887 INFO L78 Accepts]: Start accepts. Automaton has 43330 states and 49894 transitions. Word has length 245 [2023-11-29 05:01:55,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:01:55,887 INFO L495 AbstractCegarLoop]: Abstraction has 43330 states and 49894 transitions. [2023-11-29 05:01:55,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:55,888 INFO L276 IsEmpty]: Start isEmpty. Operand 43330 states and 49894 transitions. [2023-11-29 05:01:55,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-11-29 05:01:55,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:01:55,909 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:55,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:01:55,909 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:01:55,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:55,909 INFO L85 PathProgramCache]: Analyzing trace with hash -122919190, now seen corresponding path program 1 times [2023-11-29 05:01:55,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:55,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482210288] [2023-11-29 05:01:55,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:55,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:56,297 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-29 05:01:56,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:56,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482210288] [2023-11-29 05:01:56,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482210288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:56,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:56,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:01:56,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486268284] [2023-11-29 05:01:56,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:56,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:01:56,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:56,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:01:56,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:01:56,299 INFO L87 Difference]: Start difference. First operand 43330 states and 49894 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:57,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:01:57,126 INFO L93 Difference]: Finished difference Result 96840 states and 111914 transitions. [2023-11-29 05:01:57,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:01:57,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 260 [2023-11-29 05:01:57,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:01:57,180 INFO L225 Difference]: With dead ends: 96840 [2023-11-29 05:01:57,180 INFO L226 Difference]: Without dead ends: 53714 [2023-11-29 05:01:57,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:01:57,199 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 202 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:01:57,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 143 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:01:57,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53714 states. [2023-11-29 05:01:57,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53714 to 53499. [2023-11-29 05:01:57,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53499 states, 53498 states have (on average 1.1574451381360051) internal successors, (61921), 53498 states have internal predecessors, (61921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:57,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53499 states to 53499 states and 61921 transitions. [2023-11-29 05:01:57,930 INFO L78 Accepts]: Start accepts. Automaton has 53499 states and 61921 transitions. Word has length 260 [2023-11-29 05:01:57,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:01:57,930 INFO L495 AbstractCegarLoop]: Abstraction has 53499 states and 61921 transitions. [2023-11-29 05:01:57,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:57,930 INFO L276 IsEmpty]: Start isEmpty. Operand 53499 states and 61921 transitions. [2023-11-29 05:01:57,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-11-29 05:01:57,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:01:57,946 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:57,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:01:57,946 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:01:57,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:57,946 INFO L85 PathProgramCache]: Analyzing trace with hash 475101142, now seen corresponding path program 1 times [2023-11-29 05:01:57,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:57,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166906785] [2023-11-29 05:01:57,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:57,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-29 05:01:58,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:58,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166906785] [2023-11-29 05:01:58,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166906785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:01:58,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004952552] [2023-11-29 05:01:58,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:58,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:01:58,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:01:58,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:01:58,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:01:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:58,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:01:58,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:01:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-29 05:01:58,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:01:58,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004952552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:58,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:01:58,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-29 05:01:58,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010118404] [2023-11-29 05:01:58,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:58,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:01:58,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:58,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:01:58,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:01:58,838 INFO L87 Difference]: Start difference. First operand 53499 states and 61921 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:00,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:00,145 INFO L93 Difference]: Finished difference Result 153141 states and 177552 transitions. [2023-11-29 05:02:00,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:02:00,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2023-11-29 05:02:00,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:00,246 INFO L225 Difference]: With dead ends: 153141 [2023-11-29 05:02:00,246 INFO L226 Difference]: Without dead ends: 100253 [2023-11-29 05:02:00,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:02:00,270 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 760 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:00,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 307 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:02:00,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100253 states. [2023-11-29 05:02:01,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100253 to 85415. [2023-11-29 05:02:01,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85415 states, 85414 states have (on average 1.1460065094715153) internal successors, (97885), 85414 states have internal predecessors, (97885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:01,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85415 states to 85415 states and 97885 transitions. [2023-11-29 05:02:01,488 INFO L78 Accepts]: Start accepts. Automaton has 85415 states and 97885 transitions. Word has length 265 [2023-11-29 05:02:01,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:01,488 INFO L495 AbstractCegarLoop]: Abstraction has 85415 states and 97885 transitions. [2023-11-29 05:02:01,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:01,489 INFO L276 IsEmpty]: Start isEmpty. Operand 85415 states and 97885 transitions. [2023-11-29 05:02:01,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-11-29 05:02:01,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:01,507 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:02:01,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:02:01,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:01,708 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:01,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:01,708 INFO L85 PathProgramCache]: Analyzing trace with hash 487217244, now seen corresponding path program 1 times [2023-11-29 05:02:01,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:01,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081500635] [2023-11-29 05:02:01,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:01,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:02:01,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:01,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081500635] [2023-11-29 05:02:01,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081500635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:01,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:01,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:02:01,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379795249] [2023-11-29 05:02:01,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:01,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:02:01,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:01,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:02:01,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:02:01,914 INFO L87 Difference]: Start difference. First operand 85415 states and 97885 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:03,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:03,485 INFO L93 Difference]: Finished difference Result 230627 states and 264176 transitions. [2023-11-29 05:02:03,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:02:03,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 275 [2023-11-29 05:02:03,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:03,650 INFO L225 Difference]: With dead ends: 230627 [2023-11-29 05:02:03,650 INFO L226 Difference]: Without dead ends: 145823 [2023-11-29 05:02:03,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:02:03,701 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 575 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:03,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 457 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:02:03,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145823 states. [2023-11-29 05:02:05,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145823 to 143378. [2023-11-29 05:02:05,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143378 states, 143377 states have (on average 1.1419823263145414) internal successors, (163734), 143377 states have internal predecessors, (163734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:05,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143378 states to 143378 states and 163734 transitions. [2023-11-29 05:02:05,665 INFO L78 Accepts]: Start accepts. Automaton has 143378 states and 163734 transitions. Word has length 275 [2023-11-29 05:02:05,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:05,665 INFO L495 AbstractCegarLoop]: Abstraction has 143378 states and 163734 transitions. [2023-11-29 05:02:05,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:05,665 INFO L276 IsEmpty]: Start isEmpty. Operand 143378 states and 163734 transitions. [2023-11-29 05:02:05,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-11-29 05:02:05,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:05,685 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:02:05,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:02:05,686 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:05,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:05,686 INFO L85 PathProgramCache]: Analyzing trace with hash -988901499, now seen corresponding path program 1 times [2023-11-29 05:02:05,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:05,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561203802] [2023-11-29 05:02:05,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:05,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-29 05:02:06,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:06,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561203802] [2023-11-29 05:02:06,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561203802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:06,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:06,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:02:06,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996449459] [2023-11-29 05:02:06,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:06,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:02:06,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:06,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:02:06,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:02:06,395 INFO L87 Difference]: Start difference. First operand 143378 states and 163734 transitions. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:07,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:07,934 INFO L93 Difference]: Finished difference Result 296320 states and 338264 transitions. [2023-11-29 05:02:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:02:07,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 300 [2023-11-29 05:02:07,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:08,092 INFO L225 Difference]: With dead ends: 296320 [2023-11-29 05:02:08,092 INFO L226 Difference]: Without dead ends: 153553 [2023-11-29 05:02:08,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:02:08,141 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 500 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:08,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 155 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 05:02:08,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153553 states. [2023-11-29 05:02:09,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153553 to 152726. [2023-11-29 05:02:10,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152726 states, 152725 states have (on average 1.1388377803241119) internal successors, (173929), 152725 states have internal predecessors, (173929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:10,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152726 states to 152726 states and 173929 transitions. [2023-11-29 05:02:10,403 INFO L78 Accepts]: Start accepts. Automaton has 152726 states and 173929 transitions. Word has length 300 [2023-11-29 05:02:10,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:10,404 INFO L495 AbstractCegarLoop]: Abstraction has 152726 states and 173929 transitions. [2023-11-29 05:02:10,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:10,404 INFO L276 IsEmpty]: Start isEmpty. Operand 152726 states and 173929 transitions. [2023-11-29 05:02:10,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-11-29 05:02:10,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:10,417 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:02:10,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 05:02:10,417 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:10,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:10,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1780412865, now seen corresponding path program 1 times [2023-11-29 05:02:10,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:10,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253406968] [2023-11-29 05:02:10,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:10,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:10,694 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:02:10,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:10,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253406968] [2023-11-29 05:02:10,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253406968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:10,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:10,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:02:10,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791028138] [2023-11-29 05:02:10,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:10,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:02:10,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:10,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:02:10,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:02:10,697 INFO L87 Difference]: Start difference. First operand 152726 states and 173929 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:12,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:12,321 INFO L93 Difference]: Finished difference Result 310749 states and 355128 transitions. [2023-11-29 05:02:12,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:02:12,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 304 [2023-11-29 05:02:12,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:12,506 INFO L225 Difference]: With dead ends: 310749 [2023-11-29 05:02:12,506 INFO L226 Difference]: Without dead ends: 159448 [2023-11-29 05:02:12,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:02:12,557 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 173 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:12,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 372 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:02:12,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159448 states. [2023-11-29 05:02:14,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159448 to 155388. [2023-11-29 05:02:14,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155388 states, 155387 states have (on average 1.1273851737918874) internal successors, (175181), 155387 states have internal predecessors, (175181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:14,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155388 states to 155388 states and 175181 transitions. [2023-11-29 05:02:14,786 INFO L78 Accepts]: Start accepts. Automaton has 155388 states and 175181 transitions. Word has length 304 [2023-11-29 05:02:14,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:14,786 INFO L495 AbstractCegarLoop]: Abstraction has 155388 states and 175181 transitions. [2023-11-29 05:02:14,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:14,787 INFO L276 IsEmpty]: Start isEmpty. Operand 155388 states and 175181 transitions. [2023-11-29 05:02:14,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-11-29 05:02:14,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:14,801 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:02:14,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 05:02:14,802 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:14,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:14,802 INFO L85 PathProgramCache]: Analyzing trace with hash 556117517, now seen corresponding path program 1 times [2023-11-29 05:02:14,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:14,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774170692] [2023-11-29 05:02:14,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:14,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:15,147 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 05:02:15,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:15,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774170692] [2023-11-29 05:02:15,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774170692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:15,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:15,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:02:15,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976635803] [2023-11-29 05:02:15,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:15,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:02:15,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:15,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:02:15,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:02:15,149 INFO L87 Difference]: Start difference. First operand 155388 states and 175181 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:16,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:16,591 INFO L93 Difference]: Finished difference Result 324195 states and 364773 transitions. [2023-11-29 05:02:16,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:02:16,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 327 [2023-11-29 05:02:16,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:16,770 INFO L225 Difference]: With dead ends: 324195 [2023-11-29 05:02:16,770 INFO L226 Difference]: Without dead ends: 170435 [2023-11-29 05:02:17,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:02:17,049 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 203 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:17,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 155 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:02:17,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170435 states. [2023-11-29 05:02:18,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170435 to 168809. [2023-11-29 05:02:19,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168809 states, 168808 states have (on average 1.1232939197194445) internal successors, (189621), 168808 states have internal predecessors, (189621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168809 states to 168809 states and 189621 transitions. [2023-11-29 05:02:19,206 INFO L78 Accepts]: Start accepts. Automaton has 168809 states and 189621 transitions. Word has length 327 [2023-11-29 05:02:19,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:19,207 INFO L495 AbstractCegarLoop]: Abstraction has 168809 states and 189621 transitions. [2023-11-29 05:02:19,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:19,207 INFO L276 IsEmpty]: Start isEmpty. Operand 168809 states and 189621 transitions. [2023-11-29 05:02:19,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2023-11-29 05:02:19,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:19,222 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:02:19,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 05:02:19,222 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:19,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:19,223 INFO L85 PathProgramCache]: Analyzing trace with hash 640259646, now seen corresponding path program 1 times [2023-11-29 05:02:19,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:19,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552667623] [2023-11-29 05:02:19,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:19,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-29 05:02:19,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:19,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552667623] [2023-11-29 05:02:19,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552667623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:19,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:19,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:02:19,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438147646] [2023-11-29 05:02:19,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:19,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:02:19,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:19,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:02:19,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:02:19,759 INFO L87 Difference]: Start difference. First operand 168809 states and 189621 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:21,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:21,381 INFO L93 Difference]: Finished difference Result 327081 states and 367574 transitions. [2023-11-29 05:02:21,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:02:21,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 329 [2023-11-29 05:02:21,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:21,590 INFO L225 Difference]: With dead ends: 327081 [2023-11-29 05:02:21,590 INFO L226 Difference]: Without dead ends: 160716 [2023-11-29 05:02:21,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:02:21,661 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 167 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:21,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 344 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:02:21,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160716 states. [2023-11-29 05:02:23,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160716 to 139757. [2023-11-29 05:02:23,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139757 states, 139756 states have (on average 1.1236512206989324) internal successors, (157037), 139756 states have internal predecessors, (157037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:23,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139757 states to 139757 states and 157037 transitions. [2023-11-29 05:02:23,763 INFO L78 Accepts]: Start accepts. Automaton has 139757 states and 157037 transitions. Word has length 329 [2023-11-29 05:02:23,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:23,763 INFO L495 AbstractCegarLoop]: Abstraction has 139757 states and 157037 transitions. [2023-11-29 05:02:23,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:23,763 INFO L276 IsEmpty]: Start isEmpty. Operand 139757 states and 157037 transitions. [2023-11-29 05:02:23,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-11-29 05:02:23,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:23,778 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:02:23,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:02:23,778 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:23,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:23,778 INFO L85 PathProgramCache]: Analyzing trace with hash -161823286, now seen corresponding path program 1 times [2023-11-29 05:02:23,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:23,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357967813] [2023-11-29 05:02:23,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:23,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-11-29 05:02:23,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:23,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357967813] [2023-11-29 05:02:23,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357967813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:23,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:23,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:02:23,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734927119] [2023-11-29 05:02:23,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:23,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:02:23,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:23,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:02:23,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:02:23,994 INFO L87 Difference]: Start difference. First operand 139757 states and 157037 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:25,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:25,308 INFO L93 Difference]: Finished difference Result 250832 states and 280508 transitions. [2023-11-29 05:02:25,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:02:25,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 336 [2023-11-29 05:02:25,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:25,426 INFO L225 Difference]: With dead ends: 250832 [2023-11-29 05:02:25,426 INFO L226 Difference]: Without dead ends: 110876 [2023-11-29 05:02:25,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:02:25,464 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 223 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:25,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 307 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:02:25,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110876 states. [2023-11-29 05:02:26,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110876 to 90560. [2023-11-29 05:02:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90560 states, 90559 states have (on average 1.071831623582416) internal successors, (97064), 90559 states have internal predecessors, (97064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:26,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90560 states to 90560 states and 97064 transitions. [2023-11-29 05:02:26,864 INFO L78 Accepts]: Start accepts. Automaton has 90560 states and 97064 transitions. Word has length 336 [2023-11-29 05:02:26,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:26,864 INFO L495 AbstractCegarLoop]: Abstraction has 90560 states and 97064 transitions. [2023-11-29 05:02:26,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:26,864 INFO L276 IsEmpty]: Start isEmpty. Operand 90560 states and 97064 transitions. [2023-11-29 05:02:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2023-11-29 05:02:26,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:26,882 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:02:26,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 05:02:26,882 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:26,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:26,882 INFO L85 PathProgramCache]: Analyzing trace with hash 131083553, now seen corresponding path program 1 times [2023-11-29 05:02:26,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:26,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261404357] [2023-11-29 05:02:26,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:26,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:27,564 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 159 proven. 11 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-29 05:02:27,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:27,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261404357] [2023-11-29 05:02:27,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261404357] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:02:27,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355934762] [2023-11-29 05:02:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:27,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:27,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:27,566 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:27,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:02:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:27,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:02:27,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-29 05:02:27,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:27,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355934762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:27,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:02:27,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-29 05:02:27,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036684095] [2023-11-29 05:02:27,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:27,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:02:27,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:27,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:02:27,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:02:27,973 INFO L87 Difference]: Start difference. First operand 90560 states and 97064 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:29,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:29,361 INFO L93 Difference]: Finished difference Result 189689 states and 203345 transitions. [2023-11-29 05:02:29,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:02:29,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2023-11-29 05:02:29,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:29,457 INFO L225 Difference]: With dead ends: 189689 [2023-11-29 05:02:29,457 INFO L226 Difference]: Without dead ends: 101576 [2023-11-29 05:02:29,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:02:29,477 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 455 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:29,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 94 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:02:29,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101576 states. [2023-11-29 05:02:30,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101576 to 96847. [2023-11-29 05:02:30,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96847 states, 96846 states have (on average 1.0596307539805465) internal successors, (102621), 96846 states have internal predecessors, (102621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:30,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96847 states to 96847 states and 102621 transitions. [2023-11-29 05:02:30,507 INFO L78 Accepts]: Start accepts. Automaton has 96847 states and 102621 transitions. Word has length 338 [2023-11-29 05:02:30,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:30,508 INFO L495 AbstractCegarLoop]: Abstraction has 96847 states and 102621 transitions. [2023-11-29 05:02:30,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:30,508 INFO L276 IsEmpty]: Start isEmpty. Operand 96847 states and 102621 transitions. [2023-11-29 05:02:30,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-11-29 05:02:30,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:30,522 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:02:30,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:02:30,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:30,723 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:30,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:30,723 INFO L85 PathProgramCache]: Analyzing trace with hash -67281699, now seen corresponding path program 1 times [2023-11-29 05:02:30,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:30,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345504521] [2023-11-29 05:02:30,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:30,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:02:30,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:30,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345504521] [2023-11-29 05:02:30,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345504521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:30,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:02:30,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:02:30,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675084357] [2023-11-29 05:02:30,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:30,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:02:30,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:30,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:02:30,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:02:30,976 INFO L87 Difference]: Start difference. First operand 96847 states and 102621 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:32,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:32,118 INFO L93 Difference]: Finished difference Result 274463 states and 290639 transitions. [2023-11-29 05:02:32,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:02:32,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 360 [2023-11-29 05:02:32,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:32,312 INFO L225 Difference]: With dead ends: 274463 [2023-11-29 05:02:32,312 INFO L226 Difference]: Without dead ends: 179244 [2023-11-29 05:02:32,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:02:32,364 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 185 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:32,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 483 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:02:32,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179244 states. [2023-11-29 05:02:34,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179244 to 177604. [2023-11-29 05:02:34,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177604 states, 177603 states have (on average 1.0582197372792126) internal successors, (187943), 177603 states have internal predecessors, (187943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177604 states to 177604 states and 187943 transitions. [2023-11-29 05:02:34,613 INFO L78 Accepts]: Start accepts. Automaton has 177604 states and 187943 transitions. Word has length 360 [2023-11-29 05:02:34,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:34,613 INFO L495 AbstractCegarLoop]: Abstraction has 177604 states and 187943 transitions. [2023-11-29 05:02:34,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:34,614 INFO L276 IsEmpty]: Start isEmpty. Operand 177604 states and 187943 transitions. [2023-11-29 05:02:34,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2023-11-29 05:02:34,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:34,626 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:02:34,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 05:02:34,626 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:34,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:34,627 INFO L85 PathProgramCache]: Analyzing trace with hash 831816958, now seen corresponding path program 1 times [2023-11-29 05:02:34,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:34,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463205396] [2023-11-29 05:02:34,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:34,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 263 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 05:02:35,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:35,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463205396] [2023-11-29 05:02:35,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463205396] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:02:35,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358363183] [2023-11-29 05:02:35,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:35,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:35,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:35,435 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:35,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:02:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:35,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:02:35,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-29 05:02:35,774 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:35,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358363183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:35,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:02:35,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-29 05:02:35,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662045447] [2023-11-29 05:02:35,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:35,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:02:35,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:35,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:02:35,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:02:35,777 INFO L87 Difference]: Start difference. First operand 177604 states and 187943 transitions. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:37,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:37,407 INFO L93 Difference]: Finished difference Result 362953 states and 384205 transitions. [2023-11-29 05:02:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:02:37,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 387 [2023-11-29 05:02:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:37,604 INFO L225 Difference]: With dead ends: 362953 [2023-11-29 05:02:37,605 INFO L226 Difference]: Without dead ends: 178245 [2023-11-29 05:02:37,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:02:37,675 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 166 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:37,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 329 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:02:37,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178245 states. [2023-11-29 05:02:39,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178245 to 170497. [2023-11-29 05:02:39,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170497 states, 170496 states have (on average 1.0522182338588588) internal successors, (179399), 170496 states have internal predecessors, (179399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:39,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170497 states to 170497 states and 179399 transitions. [2023-11-29 05:02:39,829 INFO L78 Accepts]: Start accepts. Automaton has 170497 states and 179399 transitions. Word has length 387 [2023-11-29 05:02:39,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:39,829 INFO L495 AbstractCegarLoop]: Abstraction has 170497 states and 179399 transitions. [2023-11-29 05:02:39,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:39,829 INFO L276 IsEmpty]: Start isEmpty. Operand 170497 states and 179399 transitions. [2023-11-29 05:02:39,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-11-29 05:02:39,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:39,840 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2023-11-29 05:02:39,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:02:40,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:40,041 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:40,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:40,042 INFO L85 PathProgramCache]: Analyzing trace with hash -443753068, now seen corresponding path program 1 times [2023-11-29 05:02:40,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:40,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990013736] [2023-11-29 05:02:40,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:40,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 235 proven. 30 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-29 05:02:40,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:40,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990013736] [2023-11-29 05:02:40,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990013736] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:02:40,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712422219] [2023-11-29 05:02:40,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:40,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:40,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:40,914 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:40,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:02:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:41,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:02:41,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:41,536 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-29 05:02:41,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:41,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712422219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:41,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:02:41,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-11-29 05:02:41,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694015638] [2023-11-29 05:02:41,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:41,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:02:41,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:41,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:02:41,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:02:41,538 INFO L87 Difference]: Start difference. First operand 170497 states and 179399 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 2 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:42,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:42,828 INFO L93 Difference]: Finished difference Result 334264 states and 351819 transitions. [2023-11-29 05:02:42,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:02:42,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 2 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 397 [2023-11-29 05:02:42,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:43,002 INFO L225 Difference]: With dead ends: 334264 [2023-11-29 05:02:43,002 INFO L226 Difference]: Without dead ends: 166409 [2023-11-29 05:02:43,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:02:43,059 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 157 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:43,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 26 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:02:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166409 states. [2023-11-29 05:02:44,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166409 to 165597. [2023-11-29 05:02:45,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165597 states, 165596 states have (on average 1.052205367279403) internal successors, (174241), 165596 states have internal predecessors, (174241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:45,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165597 states to 165597 states and 174241 transitions. [2023-11-29 05:02:45,156 INFO L78 Accepts]: Start accepts. Automaton has 165597 states and 174241 transitions. Word has length 397 [2023-11-29 05:02:45,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:45,157 INFO L495 AbstractCegarLoop]: Abstraction has 165597 states and 174241 transitions. [2023-11-29 05:02:45,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 2 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:45,157 INFO L276 IsEmpty]: Start isEmpty. Operand 165597 states and 174241 transitions. [2023-11-29 05:02:45,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-11-29 05:02:45,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:45,168 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:02:45,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:02:45,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:45,369 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:45,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:45,369 INFO L85 PathProgramCache]: Analyzing trace with hash -966978385, now seen corresponding path program 1 times [2023-11-29 05:02:45,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:45,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318100491] [2023-11-29 05:02:45,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:45,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:46,090 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 147 proven. 6 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-29 05:02:46,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:46,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318100491] [2023-11-29 05:02:46,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318100491] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:02:46,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788617978] [2023-11-29 05:02:46,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:46,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:46,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:46,092 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:46,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:02:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:46,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:02:46,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 289 proven. 37 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-29 05:02:46,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:02:46,643 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 289 proven. 37 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-29 05:02:46,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788617978] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:02:46,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:02:46,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-29 05:02:46,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745912667] [2023-11-29 05:02:46,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:02:46,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:02:46,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:46,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:02:46,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:02:46,647 INFO L87 Difference]: Start difference. First operand 165597 states and 174241 transitions. Second operand has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:49,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:49,473 INFO L93 Difference]: Finished difference Result 364032 states and 383309 transitions. [2023-11-29 05:02:49,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:02:49,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 406 [2023-11-29 05:02:49,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:49,677 INFO L225 Difference]: With dead ends: 364032 [2023-11-29 05:02:49,677 INFO L226 Difference]: Without dead ends: 195391 [2023-11-29 05:02:49,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 809 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:02:49,733 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 2459 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 1910 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2459 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 2295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 1910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:49,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2459 Valid, 134 Invalid, 2295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 1910 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 05:02:49,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195391 states. [2023-11-29 05:02:51,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195391 to 171315. [2023-11-29 05:02:51,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171315 states, 171314 states have (on average 1.0488226297909102) internal successors, (179678), 171314 states have internal predecessors, (179678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:52,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171315 states to 171315 states and 179678 transitions. [2023-11-29 05:02:52,014 INFO L78 Accepts]: Start accepts. Automaton has 171315 states and 179678 transitions. Word has length 406 [2023-11-29 05:02:52,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:52,014 INFO L495 AbstractCegarLoop]: Abstraction has 171315 states and 179678 transitions. [2023-11-29 05:02:52,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:52,014 INFO L276 IsEmpty]: Start isEmpty. Operand 171315 states and 179678 transitions. [2023-11-29 05:02:52,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2023-11-29 05:02:52,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:52,027 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:02:52,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:02:52,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:52,227 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:52,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:52,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1160029599, now seen corresponding path program 1 times [2023-11-29 05:02:52,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:52,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470383053] [2023-11-29 05:02:52,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:52,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:53,074 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 564 proven. 18 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2023-11-29 05:02:53,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:02:53,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470383053] [2023-11-29 05:02:53,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470383053] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:02:53,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005067080] [2023-11-29 05:02:53,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:53,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:53,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:02:53,076 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:02:53,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:02:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:53,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:02:53,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 05:02:53,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:02:53,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005067080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:02:53,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:02:53,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-29 05:02:53,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542438219] [2023-11-29 05:02:53,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:02:53,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:02:53,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:02:53,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:02:53,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:02:53,546 INFO L87 Difference]: Start difference. First operand 171315 states and 179678 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:54,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:54,994 INFO L93 Difference]: Finished difference Result 477472 states and 500926 transitions. [2023-11-29 05:02:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:02:54,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 499 [2023-11-29 05:02:54,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:55,296 INFO L225 Difference]: With dead ends: 477472 [2023-11-29 05:02:55,296 INFO L226 Difference]: Without dead ends: 308393 [2023-11-29 05:02:55,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:02:55,359 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 158 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:55,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 476 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:02:55,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308393 states. [2023-11-29 05:02:58,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308393 to 293900. [2023-11-29 05:02:58,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293900 states, 293899 states have (on average 1.049595269123066) internal successors, (308475), 293899 states have internal predecessors, (308475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:59,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293900 states to 293900 states and 308475 transitions. [2023-11-29 05:02:59,320 INFO L78 Accepts]: Start accepts. Automaton has 293900 states and 308475 transitions. Word has length 499 [2023-11-29 05:02:59,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:59,321 INFO L495 AbstractCegarLoop]: Abstraction has 293900 states and 308475 transitions. [2023-11-29 05:02:59,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:02:59,321 INFO L276 IsEmpty]: Start isEmpty. Operand 293900 states and 308475 transitions. [2023-11-29 05:02:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2023-11-29 05:02:59,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:59,334 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 05:02:59,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 05:02:59,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:02:59,535 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:02:59,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:59,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1616802062, now seen corresponding path program 1 times [2023-11-29 05:02:59,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:02:59,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827369968] [2023-11-29 05:02:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:59,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:02:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:00,594 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 385 proven. 9 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2023-11-29 05:03:00,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:00,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827369968] [2023-11-29 05:03:00,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827369968] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:03:00,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136782630] [2023-11-29 05:03:00,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:00,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:00,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:03:00,596 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:03:00,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:03:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:00,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:03:00,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-29 05:03:00,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:03:00,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136782630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:03:00,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:03:00,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 05:03:00,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626147346] [2023-11-29 05:03:00,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:03:00,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:03:00,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:00,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:03:00,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:03:00,991 INFO L87 Difference]: Start difference. First operand 293900 states and 308475 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:02,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:03:02,903 INFO L93 Difference]: Finished difference Result 577888 states and 606642 transitions. [2023-11-29 05:03:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:03:02,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 534 [2023-11-29 05:03:02,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:03:03,215 INFO L225 Difference]: With dead ends: 577888 [2023-11-29 05:03:03,215 INFO L226 Difference]: Without dead ends: 285004 [2023-11-29 05:03:03,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:03:03,311 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 209 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:03:03,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 334 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:03:03,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285004 states. [2023-11-29 05:03:06,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285004 to 272322. [2023-11-29 05:03:06,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272322 states, 272321 states have (on average 1.0477855178263886) internal successors, (285334), 272321 states have internal predecessors, (285334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:07,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272322 states to 272322 states and 285334 transitions. [2023-11-29 05:03:07,456 INFO L78 Accepts]: Start accepts. Automaton has 272322 states and 285334 transitions. Word has length 534 [2023-11-29 05:03:07,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:03:07,476 INFO L495 AbstractCegarLoop]: Abstraction has 272322 states and 285334 transitions. [2023-11-29 05:03:07,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:07,477 INFO L276 IsEmpty]: Start isEmpty. Operand 272322 states and 285334 transitions. [2023-11-29 05:03:07,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2023-11-29 05:03:07,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:03:07,529 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:03:07,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:03:07,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 05:03:07,730 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:03:07,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:07,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1781087045, now seen corresponding path program 1 times [2023-11-29 05:03:07,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:07,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123411862] [2023-11-29 05:03:07,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:07,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:10,089 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 595 proven. 143 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-11-29 05:03:10,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:10,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123411862] [2023-11-29 05:03:10,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123411862] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:03:10,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711874311] [2023-11-29 05:03:10,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:10,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:10,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:03:10,091 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:03:10,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:03:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:10,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:03:10,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:10,660 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-11-29 05:03:10,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:03:10,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711874311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:03:10,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:03:10,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-29 05:03:10,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038057476] [2023-11-29 05:03:10,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:03:10,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:03:10,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:10,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:03:10,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:03:10,662 INFO L87 Difference]: Start difference. First operand 272322 states and 285334 transitions. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:12,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:03:12,583 INFO L93 Difference]: Finished difference Result 533314 states and 558004 transitions. [2023-11-29 05:03:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:03:12,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 564 [2023-11-29 05:03:12,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:03:12,844 INFO L225 Difference]: With dead ends: 533314 [2023-11-29 05:03:12,844 INFO L226 Difference]: Without dead ends: 257745 [2023-11-29 05:03:12,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 562 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:03:12,900 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 517 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:03:12,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 278 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:03:13,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257745 states. [2023-11-29 05:03:15,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257745 to 239035. [2023-11-29 05:03:16,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239035 states, 239034 states have (on average 1.0457466301865006) internal successors, (249969), 239034 states have internal predecessors, (249969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239035 states to 239035 states and 249969 transitions. [2023-11-29 05:03:16,297 INFO L78 Accepts]: Start accepts. Automaton has 239035 states and 249969 transitions. Word has length 564 [2023-11-29 05:03:16,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:03:16,297 INFO L495 AbstractCegarLoop]: Abstraction has 239035 states and 249969 transitions. [2023-11-29 05:03:16,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:16,297 INFO L276 IsEmpty]: Start isEmpty. Operand 239035 states and 249969 transitions. [2023-11-29 05:03:16,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2023-11-29 05:03:16,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:03:16,307 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2023-11-29 05:03:16,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 05:03:16,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 05:03:16,508 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:03:16,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:16,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1705219557, now seen corresponding path program 1 times [2023-11-29 05:03:16,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:16,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939220659] [2023-11-29 05:03:16,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:16,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:17,827 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 703 proven. 18 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-29 05:03:17,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:17,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939220659] [2023-11-29 05:03:17,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939220659] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:03:17,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731544168] [2023-11-29 05:03:17,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:17,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:17,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:03:17,829 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:03:17,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:03:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:18,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:03:18,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 770 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-11-29 05:03:18,445 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:03:18,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731544168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:03:18,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:03:18,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-11-29 05:03:18,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647017615] [2023-11-29 05:03:18,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:03:18,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:03:18,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:18,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:03:18,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:03:18,448 INFO L87 Difference]: Start difference. First operand 239035 states and 249969 transitions. Second operand has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:20,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:03:20,080 INFO L93 Difference]: Finished difference Result 320975 states and 334982 transitions. [2023-11-29 05:03:20,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:03:20,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 579 [2023-11-29 05:03:20,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:03:20,133 INFO L225 Difference]: With dead ends: 320975 [2023-11-29 05:03:20,133 INFO L226 Difference]: Without dead ends: 68745 [2023-11-29 05:03:20,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:03:20,192 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 256 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:03:20,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 319 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 05:03:20,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68745 states. [2023-11-29 05:03:20,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68745 to 53702. [2023-11-29 05:03:20,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53702 states, 53701 states have (on average 1.035976983668833) internal successors, (55633), 53701 states have internal predecessors, (55633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53702 states to 53702 states and 55633 transitions. [2023-11-29 05:03:20,990 INFO L78 Accepts]: Start accepts. Automaton has 53702 states and 55633 transitions. Word has length 579 [2023-11-29 05:03:20,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:03:20,990 INFO L495 AbstractCegarLoop]: Abstraction has 53702 states and 55633 transitions. [2023-11-29 05:03:20,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:20,990 INFO L276 IsEmpty]: Start isEmpty. Operand 53702 states and 55633 transitions. [2023-11-29 05:03:21,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1823 [2023-11-29 05:03:21,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:03:21,031 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 25, 25, 25, 25, 25, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 21, 21, 21, 21, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 12, 12, 12, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2023-11-29 05:03:21,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 05:03:21,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 05:03:21,232 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:03:21,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:21,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1765506755, now seen corresponding path program 1 times [2023-11-29 05:03:21,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:21,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708590814] [2023-11-29 05:03:21,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:21,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:22,866 INFO L134 CoverageAnalysis]: Checked inductivity of 14384 backedges. 2744 proven. 0 refuted. 0 times theorem prover too weak. 11640 trivial. 0 not checked. [2023-11-29 05:03:22,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:22,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708590814] [2023-11-29 05:03:22,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708590814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:03:22,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:03:22,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:03:22,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225178747] [2023-11-29 05:03:22,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:03:22,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:03:22,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:22,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:03:22,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:03:22,869 INFO L87 Difference]: Start difference. First operand 53702 states and 55633 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 2 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:23,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:03:23,330 INFO L93 Difference]: Finished difference Result 107196 states and 111054 transitions. [2023-11-29 05:03:23,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:03:23,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 2 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1822 [2023-11-29 05:03:23,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:03:23,372 INFO L225 Difference]: With dead ends: 107196 [2023-11-29 05:03:23,372 INFO L226 Difference]: Without dead ends: 53698 [2023-11-29 05:03:23,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:03:23,393 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 181 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:03:23,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 22 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:03:23,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53698 states. [2023-11-29 05:03:23,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53698 to 53698. [2023-11-29 05:03:23,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53698 states, 53697 states have (on average 1.0358120565394715) internal successors, (55620), 53697 states have internal predecessors, (55620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:24,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53698 states to 53698 states and 55620 transitions. [2023-11-29 05:03:24,026 INFO L78 Accepts]: Start accepts. Automaton has 53698 states and 55620 transitions. Word has length 1822 [2023-11-29 05:03:24,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:03:24,027 INFO L495 AbstractCegarLoop]: Abstraction has 53698 states and 55620 transitions. [2023-11-29 05:03:24,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 2 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:24,027 INFO L276 IsEmpty]: Start isEmpty. Operand 53698 states and 55620 transitions. [2023-11-29 05:03:24,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1838 [2023-11-29 05:03:24,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:03:24,070 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 26, 26, 26, 26, 26, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 21, 21, 21, 21, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 12, 12, 12, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:03:24,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 05:03:24,070 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:03:24,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:24,071 INFO L85 PathProgramCache]: Analyzing trace with hash 215959000, now seen corresponding path program 1 times [2023-11-29 05:03:24,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:24,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515475791] [2023-11-29 05:03:24,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:24,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:27,791 INFO L134 CoverageAnalysis]: Checked inductivity of 14763 backedges. 4454 proven. 192 refuted. 0 times theorem prover too weak. 10117 trivial. 0 not checked. [2023-11-29 05:03:27,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:27,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515475791] [2023-11-29 05:03:27,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515475791] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:03:27,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057570398] [2023-11-29 05:03:27,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:27,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:27,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:03:27,792 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:03:27,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:03:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:28,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 2974 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:03:28,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 14763 backedges. 9434 proven. 0 refuted. 0 times theorem prover too weak. 5329 trivial. 0 not checked. [2023-11-29 05:03:29,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:03:29,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057570398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:03:29,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:03:29,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-29 05:03:29,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840450050] [2023-11-29 05:03:29,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:03:29,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:03:29,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:29,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:03:29,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:03:29,246 INFO L87 Difference]: Start difference. First operand 53698 states and 55620 transitions. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:29,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:03:29,754 INFO L93 Difference]: Finished difference Result 139315 states and 144358 transitions. [2023-11-29 05:03:29,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:03:29,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1837 [2023-11-29 05:03:29,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:03:29,879 INFO L225 Difference]: With dead ends: 139315 [2023-11-29 05:03:29,879 INFO L226 Difference]: Without dead ends: 85415 [2023-11-29 05:03:29,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1841 GetRequests, 1836 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:03:29,891 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 117 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:03:29,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 656 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:03:29,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85415 states. [2023-11-29 05:03:30,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85415 to 83379. [2023-11-29 05:03:30,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83379 states, 83378 states have (on average 1.0339777879056826) internal successors, (86211), 83378 states have internal predecessors, (86211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:30,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83379 states to 83379 states and 86211 transitions. [2023-11-29 05:03:30,678 INFO L78 Accepts]: Start accepts. Automaton has 83379 states and 86211 transitions. Word has length 1837 [2023-11-29 05:03:30,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:03:30,678 INFO L495 AbstractCegarLoop]: Abstraction has 83379 states and 86211 transitions. [2023-11-29 05:03:30,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:30,679 INFO L276 IsEmpty]: Start isEmpty. Operand 83379 states and 86211 transitions. [2023-11-29 05:03:30,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2030 [2023-11-29 05:03:30,748 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:03:30,749 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 29, 29, 29, 29, 27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 23, 23, 23, 23, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 14, 14, 13, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:03:30,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 05:03:30,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:30,950 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:03:30,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:30,950 INFO L85 PathProgramCache]: Analyzing trace with hash -730828750, now seen corresponding path program 1 times [2023-11-29 05:03:30,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:30,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880643885] [2023-11-29 05:03:30,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:30,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 18298 backedges. 5041 proven. 192 refuted. 0 times theorem prover too weak. 13065 trivial. 0 not checked. [2023-11-29 05:03:34,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:34,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880643885] [2023-11-29 05:03:34,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880643885] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:03:34,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272895745] [2023-11-29 05:03:34,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:34,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:34,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:03:34,911 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:03:34,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 05:03:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:36,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 3258 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:03:36,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:36,176 INFO L134 CoverageAnalysis]: Checked inductivity of 18298 backedges. 9101 proven. 0 refuted. 0 times theorem prover too weak. 9197 trivial. 0 not checked. [2023-11-29 05:03:36,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:03:36,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272895745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:03:36,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:03:36,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-29 05:03:36,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452308321] [2023-11-29 05:03:36,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:03:36,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:03:36,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:36,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:03:36,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:03:36,180 INFO L87 Difference]: Start difference. First operand 83379 states and 86211 transitions. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:36,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:03:36,485 INFO L93 Difference]: Finished difference Result 101075 states and 104517 transitions. [2023-11-29 05:03:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:03:36,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2029 [2023-11-29 05:03:36,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:03:36,487 INFO L225 Difference]: With dead ends: 101075 [2023-11-29 05:03:36,487 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 05:03:36,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2033 GetRequests, 2028 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:03:36,510 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 185 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:03:36,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 204 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:03:36,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 05:03:36,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 05:03:36,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:36,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 05:03:36,511 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2029 [2023-11-29 05:03:36,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:03:36,512 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 05:03:36,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:36,512 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 05:03:36,512 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 05:03:36,514 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 05:03:36,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 05:03:36,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635c30cb-2217-43db-a858-f530dee50aa9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 05:03:36,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.