./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label06.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_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/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_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/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_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/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 df2b5c022524eef310b1de6141625f90d464b51feae63f6fbead126ad9876e79 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:59:37,825 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:59:37,923 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:59:37,928 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:59:37,929 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:59:37,959 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:59:37,959 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:59:37,960 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:59:37,961 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:59:37,961 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:59:37,962 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:59:37,963 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:59:37,963 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:59:37,964 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:59:37,965 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:59:37,965 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:59:37,966 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:59:37,966 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:59:37,967 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:59:37,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:59:37,968 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:59:37,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:59:37,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:59:37,974 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:59:37,974 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:59:37,975 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:59:37,975 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:59:37,976 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:59:37,976 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:59:37,977 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:59:37,977 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:59:37,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:59:37,978 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:59:37,979 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:59:37,979 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:59:37,979 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:59:37,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:59:37,980 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:59:37,980 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:59:37,980 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:59:37,980 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:59:37,981 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:59:37,981 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_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df2b5c022524eef310b1de6141625f90d464b51feae63f6fbead126ad9876e79 [2023-11-29 01:59:38,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:59:38,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:59:38,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:59:38,322 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:59:38,323 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:59:38,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/eca-rers2012/Problem13_label06.c [2023-11-29 01:59:41,492 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:59:41,956 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:59:41,957 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/sv-benchmarks/c/eca-rers2012/Problem13_label06.c [2023-11-29 01:59:41,994 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/data/4db12504e/7f08bf3270ce48a6ac105ece8aa323d5/FLAG8543c236f [2023-11-29 01:59:42,011 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/data/4db12504e/7f08bf3270ce48a6ac105ece8aa323d5 [2023-11-29 01:59:42,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:59:42,016 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:59:42,018 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:59:42,018 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:59:42,025 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:59:42,026 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:59:42" (1/1) ... [2023-11-29 01:59:42,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc664c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:42, skipping insertion in model container [2023-11-29 01:59:42,027 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:59:42" (1/1) ... [2023-11-29 01:59:42,227 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:59:42,465 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_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/sv-benchmarks/c/eca-rers2012/Problem13_label06.c[3786,3799] [2023-11-29 01:59:43,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:59:43,527 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:59:43,552 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_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/sv-benchmarks/c/eca-rers2012/Problem13_label06.c[3786,3799] [2023-11-29 01:59:44,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:59:44,354 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:59:44,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:44 WrapperNode [2023-11-29 01:59:44,355 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:59:44,356 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:59:44,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:59:44,356 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:59:44,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:44" (1/1) ... [2023-11-29 01:59:44,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:44" (1/1) ... [2023-11-29 01:59:44,994 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5584 [2023-11-29 01:59:44,994 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:59:44,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:59:44,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:59:44,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:59:45,009 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:44" (1/1) ... [2023-11-29 01:59:45,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:44" (1/1) ... [2023-11-29 01:59:45,092 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:44" (1/1) ... [2023-11-29 01:59:45,346 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 01:59:45,347 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:44" (1/1) ... [2023-11-29 01:59:45,347 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:44" (1/1) ... [2023-11-29 01:59:45,558 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:44" (1/1) ... [2023-11-29 01:59:45,662 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:44" (1/1) ... [2023-11-29 01:59:45,694 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:44" (1/1) ... [2023-11-29 01:59:45,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:44" (1/1) ... [2023-11-29 01:59:45,794 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:59:45,795 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:59:45,795 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:59:45,795 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:59:45,796 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:44" (1/1) ... [2023-11-29 01:59:45,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:59:45,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:59:45,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:59:45,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:59:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:59:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:59:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:59:45,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:59:45,928 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:59:45,930 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:59:52,658 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:59:52,731 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:59:52,731 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:59:52,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:59:52 BoogieIcfgContainer [2023-11-29 01:59:52,733 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:59:52,736 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:59:52,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:59:52,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:59:52,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:59:42" (1/3) ... [2023-11-29 01:59:52,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0417b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:59:52, skipping insertion in model container [2023-11-29 01:59:52,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:44" (2/3) ... [2023-11-29 01:59:52,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0417b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:59:52, skipping insertion in model container [2023-11-29 01:59:52,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:59:52" (3/3) ... [2023-11-29 01:59:52,743 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label06.c [2023-11-29 01:59:52,762 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:59:52,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:59:52,844 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:59:52,851 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;@585859d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:59:52,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:59:52,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 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 01:59:52,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 01:59:52,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:52,869 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] [2023-11-29 01:59:52,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:52,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:52,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1188912401, now seen corresponding path program 1 times [2023-11-29 01:59:52,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:52,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630562855] [2023-11-29 01:59:52,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:52,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:53,080 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 01:59:53,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:53,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630562855] [2023-11-29 01:59:53,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630562855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:59:53,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:59:53,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:59:53,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484357209] [2023-11-29 01:59:53,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:59:53,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:59:53,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:53,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:59:53,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:59:53,132 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 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 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 01:59:53,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:59:53,230 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-11-29 01:59:53,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:59:53,233 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2023-11-29 01:59:53,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:59:53,258 INFO L225 Difference]: With dead ends: 2071 [2023-11-29 01:59:53,258 INFO L226 Difference]: Without dead ends: 1034 [2023-11-29 01:59:53,266 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 01:59:53,270 INFO L413 NwaCegarLoop]: 1876 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, 1876 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 01:59:53,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:59:53,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-11-29 01:59:53,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-11-29 01:59:53,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 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 01:59:53,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-11-29 01:59:53,385 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 24 [2023-11-29 01:59:53,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:59:53,386 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-11-29 01:59:53,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 01:59:53,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-11-29 01:59:53,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 01:59:53,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:53,387 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] [2023-11-29 01:59:53,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:59:53,388 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:53,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:53,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1416385584, now seen corresponding path program 1 times [2023-11-29 01:59:53,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:53,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300355612] [2023-11-29 01:59:53,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:53,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:53,521 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 01:59:53,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:53,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300355612] [2023-11-29 01:59:53,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300355612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:59:53,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:59:53,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:59:53,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077043788] [2023-11-29 01:59:53,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:59:53,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:59:53,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:53,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:59:53,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:59:53,527 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 01:59:58,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:59:58,922 INFO L93 Difference]: Finished difference Result 2976 states and 5471 transitions. [2023-11-29 01:59:58,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:59:58,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2023-11-29 01:59:58,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:59:58,935 INFO L225 Difference]: With dead ends: 2976 [2023-11-29 01:59:58,935 INFO L226 Difference]: Without dead ends: 1943 [2023-11-29 01:59:58,937 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 01:59:58,939 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 930 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 3050 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 3050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:59:58,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 538 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 3050 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-29 01:59:58,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2023-11-29 01:59:58,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1872. [2023-11-29 01:59:59,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1871 states have (on average 1.7397113842864778) internal successors, (3255), 1871 states have internal predecessors, (3255), 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 01:59:59,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 3255 transitions. [2023-11-29 01:59:59,012 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 3255 transitions. Word has length 24 [2023-11-29 01:59:59,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:59:59,012 INFO L495 AbstractCegarLoop]: Abstraction has 1872 states and 3255 transitions. [2023-11-29 01:59:59,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 01:59:59,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 3255 transitions. [2023-11-29 01:59:59,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 01:59:59,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:59,018 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] [2023-11-29 01:59:59,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:59:59,019 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:59,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:59,020 INFO L85 PathProgramCache]: Analyzing trace with hash -780158661, now seen corresponding path program 1 times [2023-11-29 01:59:59,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:59,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790252244] [2023-11-29 01:59:59,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:59,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:59,216 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 01:59:59,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:59,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790252244] [2023-11-29 01:59:59,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790252244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:59:59,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:59:59,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:59:59,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672739443] [2023-11-29 01:59:59,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:59:59,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:59:59,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:59,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:59:59,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:59:59,220 INFO L87 Difference]: Start difference. First operand 1872 states and 3255 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 02:00:04,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:04,117 INFO L93 Difference]: Finished difference Result 5350 states and 9368 transitions. [2023-11-29 02:00:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:00:04,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 89 [2023-11-29 02:00:04,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:04,138 INFO L225 Difference]: With dead ends: 5350 [2023-11-29 02:00:04,138 INFO L226 Difference]: Without dead ends: 3479 [2023-11-29 02:00:04,142 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 02:00:04,144 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 884 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:04,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1077 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-29 02:00:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2023-11-29 02:00:04,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3478. [2023-11-29 02:00:04,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 3477 states have (on average 1.5188380788035662) internal successors, (5281), 3477 states have internal predecessors, (5281), 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 02:00:04,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 5281 transitions. [2023-11-29 02:00:04,275 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 5281 transitions. Word has length 89 [2023-11-29 02:00:04,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:04,276 INFO L495 AbstractCegarLoop]: Abstraction has 3478 states and 5281 transitions. [2023-11-29 02:00:04,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 02:00:04,277 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 5281 transitions. [2023-11-29 02:00:04,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 02:00:04,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:04,280 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] [2023-11-29 02:00:04,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:00:04,281 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:04,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:04,282 INFO L85 PathProgramCache]: Analyzing trace with hash -2089709408, now seen corresponding path program 1 times [2023-11-29 02:00:04,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:04,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891302169] [2023-11-29 02:00:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:04,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:04,441 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 02:00:04,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:04,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891302169] [2023-11-29 02:00:04,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891302169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:04,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:00:04,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:00:04,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147985795] [2023-11-29 02:00:04,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:04,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:00:04,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:04,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:00:04,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:00:04,446 INFO L87 Difference]: Start difference. First operand 3478 states and 5281 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 02:00:08,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:08,858 INFO L93 Difference]: Finished difference Result 10141 states and 15437 transitions. [2023-11-29 02:00:08,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:00:08,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 91 [2023-11-29 02:00:08,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:08,893 INFO L225 Difference]: With dead ends: 10141 [2023-11-29 02:00:08,894 INFO L226 Difference]: Without dead ends: 6664 [2023-11-29 02:00:08,898 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 02:00:08,899 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 976 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:08,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 875 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [772 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-29 02:00:08,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6664 states. [2023-11-29 02:00:09,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6664 to 6656. [2023-11-29 02:00:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6656 states, 6655 states have (on average 1.3729526671675432) internal successors, (9137), 6655 states have internal predecessors, (9137), 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 02:00:09,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6656 states to 6656 states and 9137 transitions. [2023-11-29 02:00:09,054 INFO L78 Accepts]: Start accepts. Automaton has 6656 states and 9137 transitions. Word has length 91 [2023-11-29 02:00:09,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:09,054 INFO L495 AbstractCegarLoop]: Abstraction has 6656 states and 9137 transitions. [2023-11-29 02:00:09,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 02:00:09,055 INFO L276 IsEmpty]: Start isEmpty. Operand 6656 states and 9137 transitions. [2023-11-29 02:00:09,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 02:00:09,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:09,058 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] [2023-11-29 02:00:09,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:00:09,058 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:09,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:09,059 INFO L85 PathProgramCache]: Analyzing trace with hash 363661455, now seen corresponding path program 1 times [2023-11-29 02:00:09,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:09,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741049592] [2023-11-29 02:00:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:09,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:09,215 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 02:00:09,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:09,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741049592] [2023-11-29 02:00:09,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741049592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:09,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:00:09,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:00:09,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638442933] [2023-11-29 02:00:09,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:09,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:00:09,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:09,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:00:09,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:00:09,219 INFO L87 Difference]: Start difference. First operand 6656 states and 9137 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 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 02:00:13,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:13,548 INFO L93 Difference]: Finished difference Result 19636 states and 26968 transitions. [2023-11-29 02:00:13,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:00:13,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 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 97 [2023-11-29 02:00:13,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:13,608 INFO L225 Difference]: With dead ends: 19636 [2023-11-29 02:00:13,608 INFO L226 Difference]: Without dead ends: 12981 [2023-11-29 02:00:13,619 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 02:00:13,620 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 791 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:13,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1161 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 02:00:13,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12981 states. [2023-11-29 02:00:13,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12981 to 12174. [2023-11-29 02:00:13,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12174 states, 12173 states have (on average 1.2529368274049124) internal successors, (15252), 12173 states have internal predecessors, (15252), 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 02:00:13,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12174 states to 12174 states and 15252 transitions. [2023-11-29 02:00:13,934 INFO L78 Accepts]: Start accepts. Automaton has 12174 states and 15252 transitions. Word has length 97 [2023-11-29 02:00:13,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:13,935 INFO L495 AbstractCegarLoop]: Abstraction has 12174 states and 15252 transitions. [2023-11-29 02:00:13,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 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 02:00:13,935 INFO L276 IsEmpty]: Start isEmpty. Operand 12174 states and 15252 transitions. [2023-11-29 02:00:13,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 02:00:13,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:13,937 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] [2023-11-29 02:00:13,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:00:13,938 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:13,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:13,939 INFO L85 PathProgramCache]: Analyzing trace with hash -566836361, now seen corresponding path program 1 times [2023-11-29 02:00:13,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:13,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778958338] [2023-11-29 02:00:13,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:13,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:14,150 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 02:00:14,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:14,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778958338] [2023-11-29 02:00:14,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778958338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:14,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:00:14,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:00:14,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843106547] [2023-11-29 02:00:14,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:14,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:00:14,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:14,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:00:14,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:00:14,154 INFO L87 Difference]: Start difference. First operand 12174 states and 15252 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 02:00:18,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:18,820 INFO L93 Difference]: Finished difference Result 36202 states and 45330 transitions. [2023-11-29 02:00:18,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:00:18,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 113 [2023-11-29 02:00:18,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:18,866 INFO L225 Difference]: With dead ends: 36202 [2023-11-29 02:00:18,867 INFO L226 Difference]: Without dead ends: 24029 [2023-11-29 02:00:18,882 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 02:00:18,883 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 914 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2920 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 3451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:18,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 697 Invalid, 3451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2920 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-29 02:00:18,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24029 states. [2023-11-29 02:00:19,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24029 to 24022. [2023-11-29 02:00:19,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24022 states, 24021 states have (on average 1.21810082844178) internal successors, (29260), 24021 states have internal predecessors, (29260), 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 02:00:19,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24022 states to 24022 states and 29260 transitions. [2023-11-29 02:00:19,238 INFO L78 Accepts]: Start accepts. Automaton has 24022 states and 29260 transitions. Word has length 113 [2023-11-29 02:00:19,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:19,239 INFO L495 AbstractCegarLoop]: Abstraction has 24022 states and 29260 transitions. [2023-11-29 02:00:19,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 02:00:19,240 INFO L276 IsEmpty]: Start isEmpty. Operand 24022 states and 29260 transitions. [2023-11-29 02:00:19,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-29 02:00:19,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:19,243 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] [2023-11-29 02:00:19,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:00:19,243 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:19,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:19,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2025474773, now seen corresponding path program 1 times [2023-11-29 02:00:19,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:19,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190696585] [2023-11-29 02:00:19,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:19,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:19,562 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 02:00:19,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:19,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190696585] [2023-11-29 02:00:19,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190696585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:19,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:00:19,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:00:19,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9876238] [2023-11-29 02:00:19,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:19,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:00:19,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:19,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:00:19,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:00:19,566 INFO L87 Difference]: Start difference. First operand 24022 states and 29260 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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 02:00:23,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:23,825 INFO L93 Difference]: Finished difference Result 42533 states and 52580 transitions. [2023-11-29 02:00:23,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:00:23,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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 140 [2023-11-29 02:00:23,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:23,873 INFO L225 Difference]: With dead ends: 42533 [2023-11-29 02:00:23,873 INFO L226 Difference]: Without dead ends: 24031 [2023-11-29 02:00:23,892 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 02:00:23,893 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 730 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:23,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1209 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 02:00:23,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24031 states. [2023-11-29 02:00:24,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24031 to 24022. [2023-11-29 02:00:24,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24022 states, 24021 states have (on average 1.2166437700345532) internal successors, (29225), 24021 states have internal predecessors, (29225), 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 02:00:24,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24022 states to 24022 states and 29225 transitions. [2023-11-29 02:00:24,176 INFO L78 Accepts]: Start accepts. Automaton has 24022 states and 29225 transitions. Word has length 140 [2023-11-29 02:00:24,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:24,176 INFO L495 AbstractCegarLoop]: Abstraction has 24022 states and 29225 transitions. [2023-11-29 02:00:24,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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 02:00:24,177 INFO L276 IsEmpty]: Start isEmpty. Operand 24022 states and 29225 transitions. [2023-11-29 02:00:24,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-29 02:00:24,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:24,182 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:00:24,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:00:24,182 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:24,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:24,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1055785391, now seen corresponding path program 1 times [2023-11-29 02:00:24,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:24,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642871600] [2023-11-29 02:00:24,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:24,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:24,452 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:00:24,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:24,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642871600] [2023-11-29 02:00:24,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642871600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:24,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:00:24,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:00:24,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236297119] [2023-11-29 02:00:24,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:24,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:00:24,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:24,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:00:24,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:00:24,456 INFO L87 Difference]: Start difference. First operand 24022 states and 29225 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 02:00:29,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:29,408 INFO L93 Difference]: Finished difference Result 67708 states and 83084 transitions. [2023-11-29 02:00:29,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:00:29,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 238 [2023-11-29 02:00:29,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:29,453 INFO L225 Difference]: With dead ends: 67708 [2023-11-29 02:00:29,453 INFO L226 Difference]: Without dead ends: 43687 [2023-11-29 02:00:29,479 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 02:00:29,480 INFO L413 NwaCegarLoop]: 1847 mSDtfsCounter, 841 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:29,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1983 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-29 02:00:29,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43687 states. [2023-11-29 02:00:29,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43687 to 42894. [2023-11-29 02:00:29,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42894 states, 42893 states have (on average 1.1763691045158884) internal successors, (50458), 42893 states have internal predecessors, (50458), 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 02:00:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42894 states to 42894 states and 50458 transitions. [2023-11-29 02:00:29,944 INFO L78 Accepts]: Start accepts. Automaton has 42894 states and 50458 transitions. Word has length 238 [2023-11-29 02:00:29,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:29,944 INFO L495 AbstractCegarLoop]: Abstraction has 42894 states and 50458 transitions. [2023-11-29 02:00:29,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 02:00:29,944 INFO L276 IsEmpty]: Start isEmpty. Operand 42894 states and 50458 transitions. [2023-11-29 02:00:29,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-11-29 02:00:29,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:29,949 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, 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, 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 02:00:29,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:00:29,950 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:29,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:29,951 INFO L85 PathProgramCache]: Analyzing trace with hash -294493016, now seen corresponding path program 1 times [2023-11-29 02:00:29,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:29,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906071718] [2023-11-29 02:00:29,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:29,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:30,666 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-29 02:00:30,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:30,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906071718] [2023-11-29 02:00:30,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906071718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:30,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:00:30,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:00:30,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362342580] [2023-11-29 02:00:30,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:30,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:00:30,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:30,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:00:30,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:00:30,669 INFO L87 Difference]: Start difference. First operand 42894 states and 50458 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 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 02:00:35,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:35,028 INFO L93 Difference]: Finished difference Result 85000 states and 100118 transitions. [2023-11-29 02:00:35,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:00:35,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 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 253 [2023-11-29 02:00:35,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:35,070 INFO L225 Difference]: With dead ends: 85000 [2023-11-29 02:00:35,070 INFO L226 Difference]: Without dead ends: 42894 [2023-11-29 02:00:35,093 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 02:00:35,094 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:35,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1193 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2504 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 02:00:35,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42894 states. [2023-11-29 02:00:35,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42894 to 42894. [2023-11-29 02:00:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42894 states, 42893 states have (on average 1.1762525353787332) internal successors, (50453), 42893 states have internal predecessors, (50453), 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 02:00:35,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42894 states to 42894 states and 50453 transitions. [2023-11-29 02:00:35,720 INFO L78 Accepts]: Start accepts. Automaton has 42894 states and 50453 transitions. Word has length 253 [2023-11-29 02:00:35,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:35,721 INFO L495 AbstractCegarLoop]: Abstraction has 42894 states and 50453 transitions. [2023-11-29 02:00:35,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 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 02:00:35,721 INFO L276 IsEmpty]: Start isEmpty. Operand 42894 states and 50453 transitions. [2023-11-29 02:00:35,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-11-29 02:00:35,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:35,728 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, 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, 1, 1, 1, 1, 1, 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 02:00:35,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 02:00:35,729 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:35,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:35,730 INFO L85 PathProgramCache]: Analyzing trace with hash 838600543, now seen corresponding path program 1 times [2023-11-29 02:00:35,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:35,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785993117] [2023-11-29 02:00:35,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:35,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:36,058 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 02:00:36,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:36,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785993117] [2023-11-29 02:00:36,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785993117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:36,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:00:36,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:00:36,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109479382] [2023-11-29 02:00:36,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:36,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:00:36,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:36,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:00:36,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:00:36,062 INFO L87 Difference]: Start difference. First operand 42894 states and 50453 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 02:00:41,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:41,254 INFO L93 Difference]: Finished difference Result 105472 states and 126162 transitions. [2023-11-29 02:00:41,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:00:41,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 02:00:41,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:41,324 INFO L225 Difference]: With dead ends: 105472 [2023-11-29 02:00:41,324 INFO L226 Difference]: Without dead ends: 63366 [2023-11-29 02:00:41,343 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 02:00:41,344 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 882 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:41,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 928 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-29 02:00:41,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63366 states. [2023-11-29 02:00:42,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63366 to 60995. [2023-11-29 02:00:42,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60995 states, 60994 states have (on average 1.165950749254025) internal successors, (71116), 60994 states have internal predecessors, (71116), 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 02:00:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60995 states to 60995 states and 71116 transitions. [2023-11-29 02:00:42,338 INFO L78 Accepts]: Start accepts. Automaton has 60995 states and 71116 transitions. Word has length 260 [2023-11-29 02:00:42,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:42,338 INFO L495 AbstractCegarLoop]: Abstraction has 60995 states and 71116 transitions. [2023-11-29 02:00:42,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 02:00:42,338 INFO L276 IsEmpty]: Start isEmpty. Operand 60995 states and 71116 transitions. [2023-11-29 02:00:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-11-29 02:00:42,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:42,341 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:00:42,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 02:00:42,341 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:42,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:42,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1179560973, now seen corresponding path program 1 times [2023-11-29 02:00:42,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:42,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250120782] [2023-11-29 02:00:42,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:42,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:43,440 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 45 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:00:43,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:43,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250120782] [2023-11-29 02:00:43,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250120782] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:00:43,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8659564] [2023-11-29 02:00:43,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:43,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:00:43,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:00:43,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:00:43,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:00:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:43,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:00:43,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:00:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-29 02:00:43,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:00:43,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8659564] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:43,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:00:43,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-29 02:00:43,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198803220] [2023-11-29 02:00:43,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:43,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:00:43,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:43,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:00:43,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:00:43,698 INFO L87 Difference]: Start difference. First operand 60995 states and 71116 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 02:00:47,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:47,984 INFO L93 Difference]: Finished difference Result 121200 states and 141438 transitions. [2023-11-29 02:00:47,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:00:47,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 02:00:47,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:48,048 INFO L225 Difference]: With dead ends: 121200 [2023-11-29 02:00:48,048 INFO L226 Difference]: Without dead ends: 60993 [2023-11-29 02:00:48,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:00:48,076 INFO L413 NwaCegarLoop]: 1356 mSDtfsCounter, 1182 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:48,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 1436 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 02:00:48,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60993 states. [2023-11-29 02:00:48,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60993 to 60992. [2023-11-29 02:00:48,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60992 states, 60991 states have (on average 1.1283959928514042) internal successors, (68822), 60991 states have internal predecessors, (68822), 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 02:00:48,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60992 states to 60992 states and 68822 transitions. [2023-11-29 02:00:48,846 INFO L78 Accepts]: Start accepts. Automaton has 60992 states and 68822 transitions. Word has length 265 [2023-11-29 02:00:48,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:48,847 INFO L495 AbstractCegarLoop]: Abstraction has 60992 states and 68822 transitions. [2023-11-29 02:00:48,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 02:00:48,847 INFO L276 IsEmpty]: Start isEmpty. Operand 60992 states and 68822 transitions. [2023-11-29 02:00:48,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-11-29 02:00:48,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:48,851 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:00:48,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:00:49,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 02:00:49,052 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:49,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:49,053 INFO L85 PathProgramCache]: Analyzing trace with hash -388182378, now seen corresponding path program 1 times [2023-11-29 02:00:49,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:49,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391853877] [2023-11-29 02:00:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:49,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 23 proven. 47 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-29 02:00:50,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:50,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391853877] [2023-11-29 02:00:50,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391853877] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:00:50,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550467026] [2023-11-29 02:00:50,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:50,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:00:50,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:00:50,066 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:00:50,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:00:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:50,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:00:50,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:00:50,311 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-29 02:00:50,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:00:50,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550467026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:50,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:00:50,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-29 02:00:50,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401776202] [2023-11-29 02:00:50,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:50,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:00:50,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:50,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:00:50,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:00:50,315 INFO L87 Difference]: Start difference. First operand 60992 states and 68822 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 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 02:00:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:54,710 INFO L93 Difference]: Finished difference Result 121187 states and 136843 transitions. [2023-11-29 02:00:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:00:54,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 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 315 [2023-11-29 02:00:54,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:54,779 INFO L225 Difference]: With dead ends: 121187 [2023-11-29 02:00:54,779 INFO L226 Difference]: Without dead ends: 60983 [2023-11-29 02:00:54,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:00:54,811 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 1114 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:54,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 819 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 02:00:54,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60983 states. [2023-11-29 02:00:55,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60983 to 60982. [2023-11-29 02:00:55,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60982 states, 60981 states have (on average 1.0927174037815057) internal successors, (66635), 60981 states have internal predecessors, (66635), 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 02:00:55,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60982 states to 60982 states and 66635 transitions. [2023-11-29 02:00:55,924 INFO L78 Accepts]: Start accepts. Automaton has 60982 states and 66635 transitions. Word has length 315 [2023-11-29 02:00:55,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:55,925 INFO L495 AbstractCegarLoop]: Abstraction has 60982 states and 66635 transitions. [2023-11-29 02:00:55,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 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 02:00:55,925 INFO L276 IsEmpty]: Start isEmpty. Operand 60982 states and 66635 transitions. [2023-11-29 02:00:55,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-11-29 02:00:55,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:55,930 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2023-11-29 02:00:55,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:00:56,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 02:00:56,131 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:56,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:56,132 INFO L85 PathProgramCache]: Analyzing trace with hash -149077708, now seen corresponding path program 1 times [2023-11-29 02:00:56,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:56,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972073398] [2023-11-29 02:00:56,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:56,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:56,587 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2023-11-29 02:00:56,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:56,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972073398] [2023-11-29 02:00:56,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972073398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:56,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:00:56,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:00:56,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469764936] [2023-11-29 02:00:56,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:56,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:00:56,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:56,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:00:56,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:00:56,590 INFO L87 Difference]: Start difference. First operand 60982 states and 66635 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 02:01:02,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:01:02,461 INFO L93 Difference]: Finished difference Result 151202 states and 165613 transitions. [2023-11-29 02:01:02,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:01:02,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 353 [2023-11-29 02:01:02,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:01:02,553 INFO L225 Difference]: With dead ends: 151202 [2023-11-29 02:01:02,553 INFO L226 Difference]: Without dead ends: 91008 [2023-11-29 02:01:02,583 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 02:01:02,584 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 970 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 3089 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 3089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:01:02,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 558 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 3089 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-29 02:01:02,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91008 states. [2023-11-29 02:01:03,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91008 to 87765. [2023-11-29 02:01:03,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87765 states, 87764 states have (on average 1.09688482749191) internal successors, (96267), 87764 states have internal predecessors, (96267), 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 02:01:03,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87765 states to 87765 states and 96267 transitions. [2023-11-29 02:01:03,623 INFO L78 Accepts]: Start accepts. Automaton has 87765 states and 96267 transitions. Word has length 353 [2023-11-29 02:01:03,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:01:03,624 INFO L495 AbstractCegarLoop]: Abstraction has 87765 states and 96267 transitions. [2023-11-29 02:01:03,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 02:01:03,625 INFO L276 IsEmpty]: Start isEmpty. Operand 87765 states and 96267 transitions. [2023-11-29 02:01:03,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-11-29 02:01:03,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:01:03,642 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2023-11-29 02:01:03,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 02:01:03,642 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:01:03,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:01:03,643 INFO L85 PathProgramCache]: Analyzing trace with hash 589637002, now seen corresponding path program 1 times [2023-11-29 02:01:03,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:01:03,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958822729] [2023-11-29 02:01:03,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:03,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:01:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2023-11-29 02:01:04,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:01:04,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958822729] [2023-11-29 02:01:04,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958822729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:01:04,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:01:04,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:01:04,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660358895] [2023-11-29 02:01:04,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:01:04,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:01:04,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:01:04,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:01:04,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:01:04,331 INFO L87 Difference]: Start difference. First operand 87765 states and 96267 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 02:01:09,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:01:09,799 INFO L93 Difference]: Finished difference Result 203086 states and 224427 transitions. [2023-11-29 02:01:09,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:01:09,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 427 [2023-11-29 02:01:09,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:01:09,921 INFO L225 Difference]: With dead ends: 203086 [2023-11-29 02:01:09,922 INFO L226 Difference]: Without dead ends: 116109 [2023-11-29 02:01:09,948 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 02:01:09,949 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 952 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 986 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 986 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:01:09,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 760 Invalid, 3370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [986 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-29 02:01:10,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116109 states. [2023-11-29 02:01:11,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116109 to 114520. [2023-11-29 02:01:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114520 states, 114519 states have (on average 1.09937215658537) internal successors, (125899), 114519 states have internal predecessors, (125899), 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 02:01:11,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114520 states to 114520 states and 125899 transitions. [2023-11-29 02:01:11,555 INFO L78 Accepts]: Start accepts. Automaton has 114520 states and 125899 transitions. Word has length 427 [2023-11-29 02:01:11,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:01:11,556 INFO L495 AbstractCegarLoop]: Abstraction has 114520 states and 125899 transitions. [2023-11-29 02:01:11,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 02:01:11,556 INFO L276 IsEmpty]: Start isEmpty. Operand 114520 states and 125899 transitions. [2023-11-29 02:01:11,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-11-29 02:01:11,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:01:11,573 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, 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, 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] [2023-11-29 02:01:11,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 02:01:11,573 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:01:11,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:01:11,574 INFO L85 PathProgramCache]: Analyzing trace with hash -626182996, now seen corresponding path program 1 times [2023-11-29 02:01:11,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:01:11,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562512965] [2023-11-29 02:01:11,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:11,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:01:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:13,294 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 286 proven. 110 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 02:01:13,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:01:13,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562512965] [2023-11-29 02:01:13,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562512965] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:01:13,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618369694] [2023-11-29 02:01:13,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:13,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:01:13,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:01:13,296 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:01:13,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:01:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:13,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:01:13,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:01:13,586 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2023-11-29 02:01:13,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:01:13,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618369694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:01:13,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:01:13,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 02:01:13,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500423240] [2023-11-29 02:01:13,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:01:13,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:01:13,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:01:13,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:01:13,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:01:13,589 INFO L87 Difference]: Start difference. First operand 114520 states and 125899 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 02:01:18,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:01:18,379 INFO L93 Difference]: Finished difference Result 229829 states and 252597 transitions. [2023-11-29 02:01:18,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:01:18,380 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 440 [2023-11-29 02:01:18,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:01:18,515 INFO L225 Difference]: With dead ends: 229829 [2023-11-29 02:01:18,515 INFO L226 Difference]: Without dead ends: 116097 [2023-11-29 02:01:18,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:01:18,729 INFO L413 NwaCegarLoop]: 1411 mSDtfsCounter, 1013 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 3080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:01:18,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1498 Invalid, 3080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 02:01:18,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116097 states. [2023-11-29 02:01:20,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116097 to 114511. [2023-11-29 02:01:20,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114511 states, 114510 states have (on average 1.0736616889354642) internal successors, (122945), 114510 states have internal predecessors, (122945), 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 02:01:20,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114511 states to 114511 states and 122945 transitions. [2023-11-29 02:01:20,242 INFO L78 Accepts]: Start accepts. Automaton has 114511 states and 122945 transitions. Word has length 440 [2023-11-29 02:01:20,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:01:20,243 INFO L495 AbstractCegarLoop]: Abstraction has 114511 states and 122945 transitions. [2023-11-29 02:01:20,243 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 02:01:20,243 INFO L276 IsEmpty]: Start isEmpty. Operand 114511 states and 122945 transitions. [2023-11-29 02:01:20,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-11-29 02:01:20,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:01:20,269 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, 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, 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] [2023-11-29 02:01:20,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:01:20,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 02:01:20,470 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:01:20,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:01:20,470 INFO L85 PathProgramCache]: Analyzing trace with hash -2085442127, now seen corresponding path program 1 times [2023-11-29 02:01:20,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:01:20,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896575151] [2023-11-29 02:01:20,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:20,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:01:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 283 proven. 113 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 02:01:22,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:01:22,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896575151] [2023-11-29 02:01:22,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896575151] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:01:22,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262868834] [2023-11-29 02:01:22,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:22,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:01:22,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:01:22,649 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:01:22,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:01:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:22,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:01:22,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:01:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 02:01:23,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:01:23,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262868834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:01:23,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:01:23,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-11-29 02:01:23,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792612952] [2023-11-29 02:01:23,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:01:23,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:01:23,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:01:23,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:01:23,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:01:23,921 INFO L87 Difference]: Start difference. First operand 114511 states and 122945 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 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 02:01:28,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:01:28,385 INFO L93 Difference]: Finished difference Result 219580 states and 236215 transitions. [2023-11-29 02:01:28,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:01:28,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 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 515 [2023-11-29 02:01:28,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:01:28,532 INFO L225 Difference]: With dead ends: 219580 [2023-11-29 02:01:28,532 INFO L226 Difference]: Without dead ends: 117665 [2023-11-29 02:01:28,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:01:28,594 INFO L413 NwaCegarLoop]: 1017 mSDtfsCounter, 683 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 2562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:01:28,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1151 Invalid, 2562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-29 02:01:28,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117665 states. [2023-11-29 02:01:29,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117665 to 115297. [2023-11-29 02:01:30,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115297 states, 115296 states have (on average 1.0675912434082708) internal successors, (123089), 115296 states have internal predecessors, (123089), 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 02:01:30,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115297 states to 115297 states and 123089 transitions. [2023-11-29 02:01:30,220 INFO L78 Accepts]: Start accepts. Automaton has 115297 states and 123089 transitions. Word has length 515 [2023-11-29 02:01:30,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:01:30,221 INFO L495 AbstractCegarLoop]: Abstraction has 115297 states and 123089 transitions. [2023-11-29 02:01:30,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 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 02:01:30,221 INFO L276 IsEmpty]: Start isEmpty. Operand 115297 states and 123089 transitions. [2023-11-29 02:01:30,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2023-11-29 02:01:30,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:01:30,248 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:01:30,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:01:30,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc18ab3-8566-4469-aa5d-fd0cfbded48c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 02:01:30,448 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:01:30,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:01:30,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1534047083, now seen corresponding path program 1 times [2023-11-29 02:01:30,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:01:30,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60524617] [2023-11-29 02:01:30,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:30,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:01:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-11-29 02:01:31,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:01:31,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60524617] [2023-11-29 02:01:31,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60524617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:01:31,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:01:31,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:01:31,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485576084] [2023-11-29 02:01:31,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:01:31,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:01:31,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:01:31,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:01:31,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:01:31,124 INFO L87 Difference]: Start difference. First operand 115297 states and 123089 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 02:01:36,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:01:36,573 INFO L93 Difference]: Finished difference Result 257368 states and 275827 transitions. [2023-11-29 02:01:36,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:01:36,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 566 [2023-11-29 02:01:36,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:01:36,728 INFO L225 Difference]: With dead ends: 257368 [2023-11-29 02:01:36,728 INFO L226 Difference]: Without dead ends: 142072 [2023-11-29 02:01:36,764 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 02:01:36,765 INFO L413 NwaCegarLoop]: 1757 mSDtfsCounter, 695 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 2940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:01:36,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1901 Invalid, 2940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 2504 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-29 02:01:36,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142072 states. [2023-11-29 02:01:38,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142072 to 139694. [2023-11-29 02:01:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139694 states, 139693 states have (on average 1.060590008089167) internal successors, (148157), 139693 states have internal predecessors, (148157), 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 02:01:38,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139694 states to 139694 states and 148157 transitions. [2023-11-29 02:01:38,674 INFO L78 Accepts]: Start accepts. Automaton has 139694 states and 148157 transitions. Word has length 566 [2023-11-29 02:01:38,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:01:38,675 INFO L495 AbstractCegarLoop]: Abstraction has 139694 states and 148157 transitions. [2023-11-29 02:01:38,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 02:01:38,675 INFO L276 IsEmpty]: Start isEmpty. Operand 139694 states and 148157 transitions. [2023-11-29 02:01:38,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2023-11-29 02:01:38,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:01:38,697 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:01:38,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 02:01:38,697 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:01:38,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:01:38,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1596086697, now seen corresponding path program 1 times [2023-11-29 02:01:38,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:01:38,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046700777] [2023-11-29 02:01:38,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:38,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:01:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:39,385 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-11-29 02:01:39,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:01:39,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046700777] [2023-11-29 02:01:39,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046700777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:01:39,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:01:39,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:01:39,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109395091] [2023-11-29 02:01:39,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:01:39,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:01:39,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:01:39,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:01:39,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:01:39,388 INFO L87 Difference]: Start difference. First operand 139694 states and 148157 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 02:01:45,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:01:45,887 INFO L93 Difference]: Finished difference Result 307831 states and 326430 transitions. [2023-11-29 02:01:45,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:01:45,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 566 [2023-11-29 02:01:45,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:01:46,069 INFO L225 Difference]: With dead ends: 307831 [2023-11-29 02:01:46,069 INFO L226 Difference]: Without dead ends: 168925 [2023-11-29 02:01:46,122 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 02:01:46,123 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 788 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 3460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 3099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:01:46,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 888 Invalid, 3460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 3099 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-29 02:01:46,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168925 states. [2023-11-29 02:01:47,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168925 to 138123. [2023-11-29 02:01:47,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138123 states, 138122 states have (on average 1.0606130811890937) internal successors, (146494), 138122 states have internal predecessors, (146494), 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 02:01:48,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138123 states to 138123 states and 146494 transitions. [2023-11-29 02:01:48,256 INFO L78 Accepts]: Start accepts. Automaton has 138123 states and 146494 transitions. Word has length 566 [2023-11-29 02:01:48,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:01:48,257 INFO L495 AbstractCegarLoop]: Abstraction has 138123 states and 146494 transitions. [2023-11-29 02:01:48,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 02:01:48,257 INFO L276 IsEmpty]: Start isEmpty. Operand 138123 states and 146494 transitions. [2023-11-29 02:01:48,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2023-11-29 02:01:48,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:01:48,286 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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] [2023-11-29 02:01:48,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 02:01:48,287 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:01:48,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:01:48,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1895323978, now seen corresponding path program 1 times [2023-11-29 02:01:48,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:01:48,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057407946] [2023-11-29 02:01:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:48,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:01:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 532 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-29 02:01:48,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:01:48,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057407946] [2023-11-29 02:01:48,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057407946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:01:48,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:01:48,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:01:48,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675272263] [2023-11-29 02:01:48,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:01:48,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:01:48,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:01:48,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:01:48,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:01:48,906 INFO L87 Difference]: Start difference. First operand 138123 states and 146494 transitions. Second operand has 4 states, 4 states have (on average 112.5) internal successors, (450), 3 states have internal predecessors, (450), 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 02:01:59,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:01:59,382 INFO L93 Difference]: Finished difference Result 389012 states and 413197 transitions. [2023-11-29 02:01:59,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:01:59,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 112.5) internal successors, (450), 3 states have internal predecessors, (450), 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 594 [2023-11-29 02:01:59,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:01:59,682 INFO L225 Difference]: With dead ends: 389012 [2023-11-29 02:01:59,682 INFO L226 Difference]: Without dead ends: 251677 [2023-11-29 02:01:59,736 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 02:01:59,737 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 1696 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 6279 mSolverCounterSat, 973 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 7252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 973 IncrementalHoareTripleChecker+Valid, 6279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:01:59,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 749 Invalid, 7252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [973 Valid, 6279 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-11-29 02:01:59,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251677 states. [2023-11-29 02:02:02,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251677 to 249959. [2023-11-29 02:02:02,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249959 states, 249958 states have (on average 1.0588458861088663) internal successors, (264667), 249958 states have internal predecessors, (264667), 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 02:02:03,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249959 states to 249959 states and 264667 transitions. [2023-11-29 02:02:03,265 INFO L78 Accepts]: Start accepts. Automaton has 249959 states and 264667 transitions. Word has length 594 [2023-11-29 02:02:03,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:02:03,266 INFO L495 AbstractCegarLoop]: Abstraction has 249959 states and 264667 transitions. [2023-11-29 02:02:03,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.5) internal successors, (450), 3 states have internal predecessors, (450), 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 02:02:03,266 INFO L276 IsEmpty]: Start isEmpty. Operand 249959 states and 264667 transitions. [2023-11-29 02:02:03,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2023-11-29 02:02:03,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:02:03,698 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:02:03,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 02:02:03,698 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:02:03,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:02:03,699 INFO L85 PathProgramCache]: Analyzing trace with hash 137468095, now seen corresponding path program 1 times [2023-11-29 02:02:03,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:02:03,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273676662] [2023-11-29 02:02:03,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:02:03,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:02:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:02:04,277 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 791 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-11-29 02:02:04,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:02:04,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273676662] [2023-11-29 02:02:04,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273676662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:02:04,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:02:04,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:02:04,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522756127] [2023-11-29 02:02:04,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:02:04,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:02:04,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:02:04,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:02:04,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:02:04,281 INFO L87 Difference]: Start difference. First operand 249959 states and 264667 transitions. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 02:02:09,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:02:09,464 INFO L93 Difference]: Finished difference Result 480259 states and 509275 transitions. [2023-11-29 02:02:09,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:02:09,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 648 [2023-11-29 02:02:09,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:02:09,788 INFO L225 Difference]: With dead ends: 480259 [2023-11-29 02:02:09,788 INFO L226 Difference]: Without dead ends: 249978 [2023-11-29 02:02:10,141 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 02:02:10,142 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 772 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:02:10,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1780 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 02:02:10,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249978 states. [2023-11-29 02:02:13,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249978 to 246809. [2023-11-29 02:02:13,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246809 states, 246808 states have (on average 1.0561853748662928) internal successors, (260675), 246808 states have internal predecessors, (260675), 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 02:02:13,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246809 states to 246809 states and 260675 transitions. [2023-11-29 02:02:13,619 INFO L78 Accepts]: Start accepts. Automaton has 246809 states and 260675 transitions. Word has length 648 [2023-11-29 02:02:13,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:02:13,620 INFO L495 AbstractCegarLoop]: Abstraction has 246809 states and 260675 transitions. [2023-11-29 02:02:13,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 02:02:13,620 INFO L276 IsEmpty]: Start isEmpty. Operand 246809 states and 260675 transitions. [2023-11-29 02:02:13,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2023-11-29 02:02:13,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:02:13,640 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:02:13,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 02:02:13,640 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:02:13,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:02:13,641 INFO L85 PathProgramCache]: Analyzing trace with hash 894560162, now seen corresponding path program 1 times [2023-11-29 02:02:13,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:02:13,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35738424] [2023-11-29 02:02:13,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:02:13,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:02:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:02:14,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2023-11-29 02:02:14,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:02:14,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35738424] [2023-11-29 02:02:14,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35738424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:02:14,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:02:14,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:02:14,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317199334] [2023-11-29 02:02:14,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:02:14,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:02:14,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:02:14,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:02:14,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:02:14,592 INFO L87 Difference]: Start difference. First operand 246809 states and 260675 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 02:02:21,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:02:21,600 INFO L93 Difference]: Finished difference Result 535470 states and 566832 transitions. [2023-11-29 02:02:21,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:02:21,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 678 [2023-11-29 02:02:21,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:02:22,015 INFO L225 Difference]: With dead ends: 535470 [2023-11-29 02:02:22,015 INFO L226 Difference]: Without dead ends: 309917 [2023-11-29 02:02:22,141 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 02:02:22,142 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 1014 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2717 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 3637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 2717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:02:22,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 361 Invalid, 3637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 2717 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-29 02:02:22,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309917 states. [2023-11-29 02:02:25,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309917 to 248391. [2023-11-29 02:02:25,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248391 states, 248390 states have (on average 1.0561657071540722) internal successors, (262341), 248390 states have internal predecessors, (262341), 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 02:02:26,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248391 states to 248391 states and 262341 transitions. [2023-11-29 02:02:26,319 INFO L78 Accepts]: Start accepts. Automaton has 248391 states and 262341 transitions. Word has length 678 [2023-11-29 02:02:26,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:02:26,320 INFO L495 AbstractCegarLoop]: Abstraction has 248391 states and 262341 transitions. [2023-11-29 02:02:26,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 02:02:26,321 INFO L276 IsEmpty]: Start isEmpty. Operand 248391 states and 262341 transitions. [2023-11-29 02:02:26,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2023-11-29 02:02:26,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:02:26,361 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:02:26,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 02:02:26,361 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:02:26,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:02:26,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1721045399, now seen corresponding path program 1 times [2023-11-29 02:02:26,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:02:26,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422097510] [2023-11-29 02:02:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:02:26,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:02:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:02:27,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 531 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2023-11-29 02:02:27,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:02:27,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422097510] [2023-11-29 02:02:27,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422097510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:02:27,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:02:27,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:02:27,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638776181] [2023-11-29 02:02:27,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:02:27,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:02:27,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:02:27,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:02:27,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:02:27,605 INFO L87 Difference]: Start difference. First operand 248391 states and 262341 transitions. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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 02:02:33,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:02:33,616 INFO L93 Difference]: Finished difference Result 481786 states and 509890 transitions. [2023-11-29 02:02:33,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:02:33,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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 738 [2023-11-29 02:02:33,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:02:33,923 INFO L225 Difference]: With dead ends: 481786 [2023-11-29 02:02:33,923 INFO L226 Difference]: Without dead ends: 254651 [2023-11-29 02:02:34,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 02:02:34,025 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1000 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:02:34,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 351 Invalid, 2898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-29 02:02:34,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254651 states. [2023-11-29 02:02:37,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254651 to 252290. [2023-11-29 02:02:37,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252290 states, 252289 states have (on average 1.0518096310183955) internal successors, (265360), 252289 states have internal predecessors, (265360), 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 02:02:37,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252290 states to 252290 states and 265360 transitions. [2023-11-29 02:02:37,765 INFO L78 Accepts]: Start accepts. Automaton has 252290 states and 265360 transitions. Word has length 738 [2023-11-29 02:02:37,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:02:37,766 INFO L495 AbstractCegarLoop]: Abstraction has 252290 states and 265360 transitions. [2023-11-29 02:02:37,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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 02:02:37,766 INFO L276 IsEmpty]: Start isEmpty. Operand 252290 states and 265360 transitions. [2023-11-29 02:02:37,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-11-29 02:02:37,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:02:37,793 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2023-11-29 02:02:37,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 02:02:37,794 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:02:37,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:02:37,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1404730567, now seen corresponding path program 1 times [2023-11-29 02:02:37,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:02:37,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393129802] [2023-11-29 02:02:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:02:37,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:02:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:02:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 1110 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-11-29 02:02:38,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:02:38,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393129802] [2023-11-29 02:02:38,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393129802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:02:38,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:02:38,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:02:38,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210002253] [2023-11-29 02:02:38,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:02:38,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:02:38,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:02:38,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:02:38,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:02:38,619 INFO L87 Difference]: Start difference. First operand 252290 states and 265360 transitions. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 02:02:44,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:02:44,084 INFO L93 Difference]: Finished difference Result 503009 states and 529107 transitions. [2023-11-29 02:02:44,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:02:44,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 752 [2023-11-29 02:02:44,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:02:44,365 INFO L225 Difference]: With dead ends: 503009 [2023-11-29 02:02:44,365 INFO L226 Difference]: Without dead ends: 251507 [2023-11-29 02:02:44,456 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 02:02:44,456 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 775 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:02:44,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 1746 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 02:02:44,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251507 states. [2023-11-29 02:02:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251507 to 247564. [2023-11-29 02:02:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247564 states, 247563 states have (on average 1.041351090429507) internal successors, (257800), 247563 states have internal predecessors, (257800), 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 02:02:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247564 states to 247564 states and 257800 transitions. [2023-11-29 02:02:48,269 INFO L78 Accepts]: Start accepts. Automaton has 247564 states and 257800 transitions. Word has length 752 [2023-11-29 02:02:48,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:02:48,270 INFO L495 AbstractCegarLoop]: Abstraction has 247564 states and 257800 transitions. [2023-11-29 02:02:48,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 02:02:48,270 INFO L276 IsEmpty]: Start isEmpty. Operand 247564 states and 257800 transitions. [2023-11-29 02:02:48,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2023-11-29 02:02:48,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:02:48,308 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:02:48,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 02:02:48,309 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:02:48,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:02:48,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1583333393, now seen corresponding path program 1 times [2023-11-29 02:02:48,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:02:48,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823575935] [2023-11-29 02:02:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:02:48,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:02:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:02:49,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2114 backedges. 1385 proven. 0 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2023-11-29 02:02:49,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:02:49,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823575935] [2023-11-29 02:02:49,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823575935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:02:49,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:02:49,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:02:49,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174753291] [2023-11-29 02:02:49,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:02:49,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:02:49,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:02:49,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:02:49,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:02:49,410 INFO L87 Difference]: Start difference. First operand 247564 states and 257800 transitions. Second operand has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 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 02:02:59,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:02:59,554 INFO L93 Difference]: Finished difference Result 577944 states and 601968 transitions. [2023-11-29 02:02:59,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:02:59,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 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 784 [2023-11-29 02:02:59,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:03:00,015 INFO L225 Difference]: With dead ends: 577944 [2023-11-29 02:03:00,015 INFO L226 Difference]: Without dead ends: 331168 [2023-11-29 02:03:00,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:03:00,142 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1703 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 6197 mSolverCounterSat, 940 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 7137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 940 IncrementalHoareTripleChecker+Valid, 6197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:03:00,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 916 Invalid, 7137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [940 Valid, 6197 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-11-29 02:03:00,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331168 states. [2023-11-29 02:03:04,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331168 to 271189. [2023-11-29 02:03:04,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271189 states, 271188 states have (on average 1.039326961369972) internal successors, (281853), 271188 states have internal predecessors, (281853), 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 02:03:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271189 states to 271189 states and 281853 transitions. [2023-11-29 02:03:04,510 INFO L78 Accepts]: Start accepts. Automaton has 271189 states and 281853 transitions. Word has length 784 [2023-11-29 02:03:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:03:04,511 INFO L495 AbstractCegarLoop]: Abstraction has 271189 states and 281853 transitions. [2023-11-29 02:03:04,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 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 02:03:04,511 INFO L276 IsEmpty]: Start isEmpty. Operand 271189 states and 281853 transitions. [2023-11-29 02:03:04,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2023-11-29 02:03:04,543 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:03:04,544 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:04,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 02:03:04,544 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:03:04,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:03:04,545 INFO L85 PathProgramCache]: Analyzing trace with hash 389182819, now seen corresponding path program 1 times [2023-11-29 02:03:04,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:03:04,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811427101] [2023-11-29 02:03:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:03:04,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:03:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2477 backedges. 1703 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2023-11-29 02:03:05,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:03:05,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811427101] [2023-11-29 02:03:05,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811427101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:03:05,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:03:05,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:03:05,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692031795] [2023-11-29 02:03:05,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:03:05,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:03:05,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:03:05,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:03:05,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:03:05,607 INFO L87 Difference]: Start difference. First operand 271189 states and 281853 transitions. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 02:03:10,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:03:10,854 INFO L93 Difference]: Finished difference Result 538451 states and 559624 transitions. [2023-11-29 02:03:10,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:03:10,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 804 [2023-11-29 02:03:10,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:03:11,175 INFO L225 Difference]: With dead ends: 538451 [2023-11-29 02:03:11,175 INFO L226 Difference]: Without dead ends: 266472 [2023-11-29 02:03:11,280 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 02:03:11,280 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 760 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 2629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:03:11,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 1712 Invalid, 2629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 02:03:11,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266472 states. [2023-11-29 02:03:14,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266472 to 255414. [2023-11-29 02:03:14,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255414 states, 255413 states have (on average 1.0331110789192406) internal successors, (263870), 255413 states have internal predecessors, (263870), 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 02:03:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255414 states to 255414 states and 263870 transitions. [2023-11-29 02:03:15,101 INFO L78 Accepts]: Start accepts. Automaton has 255414 states and 263870 transitions. Word has length 804 [2023-11-29 02:03:15,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:03:15,101 INFO L495 AbstractCegarLoop]: Abstraction has 255414 states and 263870 transitions. [2023-11-29 02:03:15,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 02:03:15,102 INFO L276 IsEmpty]: Start isEmpty. Operand 255414 states and 263870 transitions. [2023-11-29 02:03:15,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2023-11-29 02:03:15,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:03:15,135 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2023-11-29 02:03:15,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 02:03:15,135 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:03:15,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:03:15,136 INFO L85 PathProgramCache]: Analyzing trace with hash -16262123, now seen corresponding path program 1 times [2023-11-29 02:03:15,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:03:15,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230586460] [2023-11-29 02:03:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:03:15,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:03:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1914 backedges. 1141 proven. 0 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2023-11-29 02:03:16,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:03:16,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230586460] [2023-11-29 02:03:16,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230586460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:03:16,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:03:16,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:03:16,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315077301] [2023-11-29 02:03:16,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:03:16,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:03:16,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:03:16,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:03:16,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:03:16,527 INFO L87 Difference]: Start difference. First operand 255414 states and 263870 transitions. Second operand has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 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 02:03:26,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:03:26,851 INFO L93 Difference]: Finished difference Result 592064 states and 612069 transitions. [2023-11-29 02:03:26,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:03:26,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 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 827 [2023-11-29 02:03:26,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:03:27,286 INFO L225 Difference]: With dead ends: 592064 [2023-11-29 02:03:27,286 INFO L226 Difference]: Without dead ends: 342162 [2023-11-29 02:03:27,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 02:03:27,394 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1669 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 5162 mSolverCounterSat, 1206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 6368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1206 IncrementalHoareTripleChecker+Valid, 5162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:03:27,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1669 Valid, 430 Invalid, 6368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1206 Valid, 5162 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-11-29 02:03:27,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342162 states. [2023-11-29 02:03:31,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342162 to 329440. [2023-11-29 02:03:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329440 states, 329439 states have (on average 1.0328224648569235) internal successors, (340252), 329439 states have internal predecessors, (340252), 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 02:03:32,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329440 states to 329440 states and 340252 transitions. [2023-11-29 02:03:32,357 INFO L78 Accepts]: Start accepts. Automaton has 329440 states and 340252 transitions. Word has length 827 [2023-11-29 02:03:32,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:03:32,358 INFO L495 AbstractCegarLoop]: Abstraction has 329440 states and 340252 transitions. [2023-11-29 02:03:32,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 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 02:03:32,359 INFO L276 IsEmpty]: Start isEmpty. Operand 329440 states and 340252 transitions. [2023-11-29 02:03:32,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2023-11-29 02:03:32,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:03:32,417 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 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, 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] [2023-11-29 02:03:32,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 02:03:32,418 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:03:32,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:03:32,418 INFO L85 PathProgramCache]: Analyzing trace with hash 960669757, now seen corresponding path program 1 times [2023-11-29 02:03:32,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:03:32,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770276310] [2023-11-29 02:03:32,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:03:32,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:03:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:33,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2678 backedges. 1859 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2023-11-29 02:03:33,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:03:33,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770276310] [2023-11-29 02:03:33,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770276310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:03:33,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:03:33,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:03:33,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127896146] [2023-11-29 02:03:33,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:03:33,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:03:33,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:03:33,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:03:33,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:03:33,809 INFO L87 Difference]: Start difference. First operand 329440 states and 340252 transitions. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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 02:03:39,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:03:39,618 INFO L93 Difference]: Finished difference Result 644730 states and 666320 transitions. [2023-11-29 02:03:39,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:03:39,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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 875 [2023-11-29 02:03:39,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:03:40,046 INFO L225 Difference]: With dead ends: 644730 [2023-11-29 02:03:40,046 INFO L226 Difference]: Without dead ends: 333398 [2023-11-29 02:03:40,167 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 02:03:40,167 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 701 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 2568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:03:40,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1758 Invalid, 2568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-29 02:03:40,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333398 states. [2023-11-29 02:03:43,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333398 to 333375. [2023-11-29 02:03:44,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333375 states, 333374 states have (on average 1.032327056099156) internal successors, (344151), 333374 states have internal predecessors, (344151), 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 02:03:45,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333375 states to 333375 states and 344151 transitions. [2023-11-29 02:03:45,112 INFO L78 Accepts]: Start accepts. Automaton has 333375 states and 344151 transitions. Word has length 875 [2023-11-29 02:03:45,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:03:45,113 INFO L495 AbstractCegarLoop]: Abstraction has 333375 states and 344151 transitions. [2023-11-29 02:03:45,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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 02:03:45,113 INFO L276 IsEmpty]: Start isEmpty. Operand 333375 states and 344151 transitions. [2023-11-29 02:03:45,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 900 [2023-11-29 02:03:45,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:03:45,171 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:45,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 02:03:45,171 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:03:45,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:03:45,171 INFO L85 PathProgramCache]: Analyzing trace with hash 629778648, now seen corresponding path program 1 times [2023-11-29 02:03:45,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:03:45,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964991728] [2023-11-29 02:03:45,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:03:45,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:03:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3156 backedges. 2104 proven. 0 refuted. 0 times theorem prover too weak. 1052 trivial. 0 not checked. [2023-11-29 02:03:46,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:03:46,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964991728] [2023-11-29 02:03:46,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964991728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:03:46,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:03:46,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:03:46,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858785954] [2023-11-29 02:03:46,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:03:46,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:03:46,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:03:46,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:03:46,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:03:46,419 INFO L87 Difference]: Start difference. First operand 333375 states and 344151 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 02:03:52,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:03:52,105 INFO L93 Difference]: Finished difference Result 654945 states and 676470 transitions. [2023-11-29 02:03:52,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:03:52,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 899 [2023-11-29 02:03:52,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:03:52,552 INFO L225 Difference]: With dead ends: 654945 [2023-11-29 02:03:52,552 INFO L226 Difference]: Without dead ends: 339678 [2023-11-29 02:03:52,674 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 02:03:52,675 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 720 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2351 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 2417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:03:52,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1768 Invalid, 2417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2351 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 02:03:53,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339678 states. [2023-11-29 02:03:56,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339678 to 339671. [2023-11-29 02:03:57,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339671 states, 339670 states have (on average 1.0317396296405335) internal successors, (350451), 339670 states have internal predecessors, (350451), 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 02:03:58,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339671 states to 339671 states and 350451 transitions. [2023-11-29 02:03:58,014 INFO L78 Accepts]: Start accepts. Automaton has 339671 states and 350451 transitions. Word has length 899 [2023-11-29 02:03:58,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:03:58,015 INFO L495 AbstractCegarLoop]: Abstraction has 339671 states and 350451 transitions. [2023-11-29 02:03:58,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 02:03:58,015 INFO L276 IsEmpty]: Start isEmpty. Operand 339671 states and 350451 transitions. [2023-11-29 02:03:58,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 943 [2023-11-29 02:03:58,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:03:58,086 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 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] [2023-11-29 02:03:58,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 02:03:58,087 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:03:58,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:03:58,087 INFO L85 PathProgramCache]: Analyzing trace with hash 974712314, now seen corresponding path program 1 times [2023-11-29 02:03:58,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:03:58,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166801326] [2023-11-29 02:03:58,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:03:58,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:03:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:58,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 1668 proven. 0 refuted. 0 times theorem prover too weak. 1374 trivial. 0 not checked. [2023-11-29 02:03:58,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:03:58,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166801326] [2023-11-29 02:03:58,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166801326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:03:58,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:03:58,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:03:58,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520825096] [2023-11-29 02:03:58,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:03:58,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:03:58,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:03:58,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:03:58,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:03:58,521 INFO L87 Difference]: Start difference. First operand 339671 states and 350451 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 2 states have internal predecessors, (305), 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 02:04:02,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:04:02,662 INFO L93 Difference]: Finished difference Result 654911 states and 676009 transitions. [2023-11-29 02:04:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:04:02,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 2 states have internal predecessors, (305), 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 942 [2023-11-29 02:04:02,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted.