./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label24.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_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/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_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label24.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/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_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/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 24f3f57511ed23e7031a40e25f3e5030217322872173b78a17d5462480e8351a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:48:13,770 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:48:13,842 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:48:13,847 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:48:13,848 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:48:13,885 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:48:13,886 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:48:13,886 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:48:13,887 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:48:13,887 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:48:13,888 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:48:13,889 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:48:13,890 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:48:13,890 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:48:13,891 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:48:13,891 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:48:13,898 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:48:13,898 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:48:13,899 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:48:13,899 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:48:13,900 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:48:13,900 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:48:13,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:48:13,901 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:48:13,901 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:48:13,902 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:48:13,902 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:48:13,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:48:13,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:48:13,903 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:48:13,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:48:13,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:48:13,905 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:48:13,905 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:48:13,905 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:48:13,906 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:48:13,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:48:13,906 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:48:13,906 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:48:13,907 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:48:13,907 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:48:13,907 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:48:13,907 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_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24f3f57511ed23e7031a40e25f3e5030217322872173b78a17d5462480e8351a [2023-11-29 01:48:14,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:48:14,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:48:14,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:48:14,168 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:48:14,169 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:48:14,170 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/eca-rers2012/Problem12_label24.c [2023-11-29 01:48:16,953 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:48:17,383 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:48:17,383 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/sv-benchmarks/c/eca-rers2012/Problem12_label24.c [2023-11-29 01:48:17,409 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/data/b311fefb1/83763e910a044846bf9e114175ed16e9/FLAG2e5a81c97 [2023-11-29 01:48:17,425 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/data/b311fefb1/83763e910a044846bf9e114175ed16e9 [2023-11-29 01:48:17,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:48:17,430 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:48:17,432 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:48:17,432 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:48:17,438 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:48:17,439 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:48:17" (1/1) ... [2023-11-29 01:48:17,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@186cc681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:17, skipping insertion in model container [2023-11-29 01:48:17,440 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:48:17" (1/1) ... [2023-11-29 01:48:17,596 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:48:17,847 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_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/sv-benchmarks/c/eca-rers2012/Problem12_label24.c[5810,5823] [2023-11-29 01:48:18,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:48:18,648 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:48:18,669 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_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/sv-benchmarks/c/eca-rers2012/Problem12_label24.c[5810,5823] [2023-11-29 01:48:19,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:48:19,230 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:48:19,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:19 WrapperNode [2023-11-29 01:48:19,231 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:48:19,232 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:48:19,232 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:48:19,232 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:48:19,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:19" (1/1) ... [2023-11-29 01:48:19,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:19" (1/1) ... [2023-11-29 01:48:19,639 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4758 [2023-11-29 01:48:19,639 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:48:19,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:48:19,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:48:19,640 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:48:19,654 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:19" (1/1) ... [2023-11-29 01:48:19,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:19" (1/1) ... [2023-11-29 01:48:19,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:19" (1/1) ... [2023-11-29 01:48:19,878 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 01:48:19,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:19" (1/1) ... [2023-11-29 01:48:19,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:19" (1/1) ... [2023-11-29 01:48:19,962 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:19" (1/1) ... [2023-11-29 01:48:19,988 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:19" (1/1) ... [2023-11-29 01:48:20,003 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:19" (1/1) ... [2023-11-29 01:48:20,017 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:19" (1/1) ... [2023-11-29 01:48:20,109 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:48:20,110 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:48:20,110 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:48:20,110 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:48:20,111 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:19" (1/1) ... [2023-11-29 01:48:20,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:48:20,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:20,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:48:20,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:48:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:48:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:48:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:48:20,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:48:20,313 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:48:20,318 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:48:25,337 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:48:25,429 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:48:25,429 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:48:25,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:48:25 BoogieIcfgContainer [2023-11-29 01:48:25,430 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:48:25,433 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:48:25,433 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:48:25,437 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:48:25,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:48:17" (1/3) ... [2023-11-29 01:48:25,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780ab3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:48:25, skipping insertion in model container [2023-11-29 01:48:25,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:48:19" (2/3) ... [2023-11-29 01:48:25,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780ab3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:48:25, skipping insertion in model container [2023-11-29 01:48:25,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:48:25" (3/3) ... [2023-11-29 01:48:25,440 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label24.c [2023-11-29 01:48:25,462 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:48:25,462 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:48:25,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:48:25,546 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;@220d8376, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:48:25,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:48:25,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 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 01:48:25,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 01:48:25,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:25,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:25,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:25,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:25,571 INFO L85 PathProgramCache]: Analyzing trace with hash -979491199, now seen corresponding path program 1 times [2023-11-29 01:48:25,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:25,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767195284] [2023-11-29 01:48:25,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:25,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:25,770 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 01:48:25,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:25,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767195284] [2023-11-29 01:48:25,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767195284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:25,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:25,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:48:25,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580852784] [2023-11-29 01:48:25,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:25,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:48:25,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:25,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:48:25,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:48:25,815 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 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 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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 01:48:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:25,901 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2023-11-29 01:48:25,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:48:25,907 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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 45 [2023-11-29 01:48:25,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:25,925 INFO L225 Difference]: With dead ends: 1511 [2023-11-29 01:48:25,925 INFO L226 Difference]: Without dead ends: 754 [2023-11-29 01:48:25,930 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 01:48:25,933 INFO L413 NwaCegarLoop]: 1438 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, 1438 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 01:48:25,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:48:25,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-11-29 01:48:26,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-11-29 01:48:26,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 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 01:48:26,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2023-11-29 01:48:26,015 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 45 [2023-11-29 01:48:26,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:26,015 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2023-11-29 01:48:26,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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 01:48:26,016 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2023-11-29 01:48:26,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 01:48:26,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:26,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:26,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:48:26,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:26,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:26,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1470518313, now seen corresponding path program 1 times [2023-11-29 01:48:26,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:26,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520380877] [2023-11-29 01:48:26,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:26,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:26,183 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 01:48:26,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:26,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520380877] [2023-11-29 01:48:26,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520380877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:26,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:26,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:48:26,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646379821] [2023-11-29 01:48:26,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:26,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:48:26,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:26,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:48:26,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:48:26,188 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 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 01:48:29,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:29,796 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2023-11-29 01:48:29,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:48:29,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 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 45 [2023-11-29 01:48:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:29,807 INFO L225 Difference]: With dead ends: 2258 [2023-11-29 01:48:29,807 INFO L226 Difference]: Without dead ends: 1505 [2023-11-29 01:48:29,808 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 01:48:29,810 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 823 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:29,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 113 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 01:48:29,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2023-11-29 01:48:29,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2023-11-29 01:48:29,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.846409574468085) internal successors, (2777), 1504 states have internal predecessors, (2777), 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 01:48:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2777 transitions. [2023-11-29 01:48:29,858 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2777 transitions. Word has length 45 [2023-11-29 01:48:29,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:29,858 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 2777 transitions. [2023-11-29 01:48:29,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 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 01:48:29,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2777 transitions. [2023-11-29 01:48:29,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 01:48:29,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:29,864 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 01:48:29,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:48:29,865 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:29,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:29,866 INFO L85 PathProgramCache]: Analyzing trace with hash 496265151, now seen corresponding path program 1 times [2023-11-29 01:48:29,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:29,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742655510] [2023-11-29 01:48:29,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:29,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:48:30,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:30,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742655510] [2023-11-29 01:48:30,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742655510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:30,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:30,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:48:30,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390601473] [2023-11-29 01:48:30,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:30,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:48:30,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:30,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:48:30,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:48:30,113 INFO L87 Difference]: Start difference. First operand 1505 states and 2777 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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 01:48:33,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:33,898 INFO L93 Difference]: Finished difference Result 3760 states and 6892 transitions. [2023-11-29 01:48:33,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:48:33,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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 114 [2023-11-29 01:48:33,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:33,914 INFO L225 Difference]: With dead ends: 3760 [2023-11-29 01:48:33,915 INFO L226 Difference]: Without dead ends: 2256 [2023-11-29 01:48:33,918 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 01:48:33,919 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:33,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 446 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 01:48:33,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2023-11-29 01:48:33,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2256. [2023-11-29 01:48:34,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.4421286031042129) internal successors, (3252), 2255 states have internal predecessors, (3252), 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 01:48:34,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 3252 transitions. [2023-11-29 01:48:34,008 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 3252 transitions. Word has length 114 [2023-11-29 01:48:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:34,009 INFO L495 AbstractCegarLoop]: Abstraction has 2256 states and 3252 transitions. [2023-11-29 01:48:34,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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 01:48:34,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 3252 transitions. [2023-11-29 01:48:34,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 01:48:34,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:34,013 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 01:48:34,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:48:34,013 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:34,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:34,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1226564934, now seen corresponding path program 1 times [2023-11-29 01:48:34,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:34,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925074848] [2023-11-29 01:48:34,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:34,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:34,392 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:48:34,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:34,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925074848] [2023-11-29 01:48:34,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925074848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:34,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:34,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:48:34,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784772288] [2023-11-29 01:48:34,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:34,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:48:34,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:34,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:48:34,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:48:34,396 INFO L87 Difference]: Start difference. First operand 2256 states and 3252 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 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 01:48:39,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:39,556 INFO L93 Difference]: Finished difference Result 6803 states and 9791 transitions. [2023-11-29 01:48:39,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:48:39,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 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 116 [2023-11-29 01:48:39,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:39,577 INFO L225 Difference]: With dead ends: 6803 [2023-11-29 01:48:39,577 INFO L226 Difference]: Without dead ends: 4511 [2023-11-29 01:48:39,580 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 01:48:39,581 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 690 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3802 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 4465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 3802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:39,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 703 Invalid, 4465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 3802 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-29 01:48:39,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2023-11-29 01:48:39,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 4509. [2023-11-29 01:48:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4509 states, 4508 states have (on average 1.2282608695652173) internal successors, (5537), 4508 states have internal predecessors, (5537), 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 01:48:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4509 states to 4509 states and 5537 transitions. [2023-11-29 01:48:39,691 INFO L78 Accepts]: Start accepts. Automaton has 4509 states and 5537 transitions. Word has length 116 [2023-11-29 01:48:39,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:39,691 INFO L495 AbstractCegarLoop]: Abstraction has 4509 states and 5537 transitions. [2023-11-29 01:48:39,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 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 01:48:39,692 INFO L276 IsEmpty]: Start isEmpty. Operand 4509 states and 5537 transitions. [2023-11-29 01:48:39,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-29 01:48:39,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:39,699 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:39,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:48:39,699 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:39,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:39,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1179659880, now seen corresponding path program 1 times [2023-11-29 01:48:39,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:39,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588941299] [2023-11-29 01:48:39,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:39,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 01:48:40,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:40,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588941299] [2023-11-29 01:48:40,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588941299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:40,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:40,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:48:40,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120898753] [2023-11-29 01:48:40,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:40,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:48:40,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:40,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:48:40,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:48:40,278 INFO L87 Difference]: Start difference. First operand 4509 states and 5537 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 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 01:48:44,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:44,555 INFO L93 Difference]: Finished difference Result 11309 states and 14293 transitions. [2023-11-29 01:48:44,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:48:44,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 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 257 [2023-11-29 01:48:44,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:44,583 INFO L225 Difference]: With dead ends: 11309 [2023-11-29 01:48:44,583 INFO L226 Difference]: Without dead ends: 6764 [2023-11-29 01:48:44,588 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 01:48:44,590 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 775 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3719 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 4261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:44,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 324 Invalid, 4261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3719 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 01:48:44,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6764 states. [2023-11-29 01:48:44,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6764 to 6762. [2023-11-29 01:48:44,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6762 states, 6761 states have (on average 1.1993787901198047) internal successors, (8109), 6761 states have internal predecessors, (8109), 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 01:48:44,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6762 states to 6762 states and 8109 transitions. [2023-11-29 01:48:44,710 INFO L78 Accepts]: Start accepts. Automaton has 6762 states and 8109 transitions. Word has length 257 [2023-11-29 01:48:44,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:44,711 INFO L495 AbstractCegarLoop]: Abstraction has 6762 states and 8109 transitions. [2023-11-29 01:48:44,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 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 01:48:44,712 INFO L276 IsEmpty]: Start isEmpty. Operand 6762 states and 8109 transitions. [2023-11-29 01:48:44,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-11-29 01:48:44,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:44,716 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:44,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:48:44,716 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:44,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:44,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2102270667, now seen corresponding path program 1 times [2023-11-29 01:48:44,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:44,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900938411] [2023-11-29 01:48:44,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:44,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 01:48:45,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:45,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900938411] [2023-11-29 01:48:45,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900938411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:45,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:45,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:48:45,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077424678] [2023-11-29 01:48:45,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:45,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:48:45,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:45,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:48:45,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:48:45,293 INFO L87 Difference]: Start difference. First operand 6762 states and 8109 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:48:50,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:50,726 INFO L93 Difference]: Finished difference Result 19533 states and 23542 transitions. [2023-11-29 01:48:50,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:48:50,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 258 [2023-11-29 01:48:50,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:50,783 INFO L225 Difference]: With dead ends: 19533 [2023-11-29 01:48:50,783 INFO L226 Difference]: Without dead ends: 12772 [2023-11-29 01:48:50,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:48:50,793 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 2027 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 4473 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2027 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 5022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 4473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:50,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2027 Valid, 605 Invalid, 5022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 4473 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-29 01:48:50,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12772 states. [2023-11-29 01:48:50,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12772 to 12019. [2023-11-29 01:48:50,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12019 states, 12018 states have (on average 1.138042935596605) internal successors, (13677), 12018 states have internal predecessors, (13677), 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 01:48:50,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12019 states to 12019 states and 13677 transitions. [2023-11-29 01:48:50,983 INFO L78 Accepts]: Start accepts. Automaton has 12019 states and 13677 transitions. Word has length 258 [2023-11-29 01:48:50,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:50,984 INFO L495 AbstractCegarLoop]: Abstraction has 12019 states and 13677 transitions. [2023-11-29 01:48:50,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:48:50,985 INFO L276 IsEmpty]: Start isEmpty. Operand 12019 states and 13677 transitions. [2023-11-29 01:48:50,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-11-29 01:48:50,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:50,991 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:50,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:48:50,991 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:50,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:50,992 INFO L85 PathProgramCache]: Analyzing trace with hash 8245619, now seen corresponding path program 1 times [2023-11-29 01:48:50,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:50,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234919904] [2023-11-29 01:48:50,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:50,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 01:48:51,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:51,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234919904] [2023-11-29 01:48:51,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234919904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:51,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:51,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:48:51,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676681710] [2023-11-29 01:48:51,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:51,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:48:51,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:51,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:48:51,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:48:51,250 INFO L87 Difference]: Start difference. First operand 12019 states and 13677 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 01:48:55,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:55,203 INFO L93 Difference]: Finished difference Result 33049 states and 37996 transitions. [2023-11-29 01:48:55,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:48:55,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 340 [2023-11-29 01:48:55,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:55,236 INFO L225 Difference]: With dead ends: 33049 [2023-11-29 01:48:55,236 INFO L226 Difference]: Without dead ends: 21031 [2023-11-29 01:48:55,248 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 01:48:55,248 INFO L413 NwaCegarLoop]: 1376 mSDtfsCounter, 667 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 3082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:55,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1383 Invalid, 3082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 2721 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-29 01:48:55,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21031 states. [2023-11-29 01:48:55,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21031 to 18778. [2023-11-29 01:48:55,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18778 states, 18777 states have (on average 1.1468818235074825) internal successors, (21535), 18777 states have internal predecessors, (21535), 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 01:48:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18778 states to 18778 states and 21535 transitions. [2023-11-29 01:48:55,528 INFO L78 Accepts]: Start accepts. Automaton has 18778 states and 21535 transitions. Word has length 340 [2023-11-29 01:48:55,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:55,528 INFO L495 AbstractCegarLoop]: Abstraction has 18778 states and 21535 transitions. [2023-11-29 01:48:55,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 01:48:55,529 INFO L276 IsEmpty]: Start isEmpty. Operand 18778 states and 21535 transitions. [2023-11-29 01:48:55,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-11-29 01:48:55,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:55,534 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-11-29 01:48:55,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:48:55,534 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:55,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:55,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2024768489, now seen corresponding path program 1 times [2023-11-29 01:48:55,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:55,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478989612] [2023-11-29 01:48:55,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:55,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 01:48:55,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:55,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478989612] [2023-11-29 01:48:55,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478989612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:55,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:55,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:48:55,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666307651] [2023-11-29 01:48:55,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:55,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:48:55,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:55,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:48:55,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:48:55,782 INFO L87 Difference]: Start difference. First operand 18778 states and 21535 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 01:48:59,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:59,313 INFO L93 Difference]: Finished difference Result 45816 states and 53207 transitions. [2023-11-29 01:48:59,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:48:59,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 344 [2023-11-29 01:48:59,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:59,345 INFO L225 Difference]: With dead ends: 45816 [2023-11-29 01:48:59,345 INFO L226 Difference]: Without dead ends: 27039 [2023-11-29 01:48:59,360 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 01:48:59,361 INFO L413 NwaCegarLoop]: 1194 mSDtfsCounter, 704 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:59,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1201 Invalid, 2672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 01:48:59,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27039 states. [2023-11-29 01:48:59,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27039 to 27039. [2023-11-29 01:48:59,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27039 states, 27038 states have (on average 1.1244174865004808) internal successors, (30402), 27038 states have internal predecessors, (30402), 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 01:48:59,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27039 states to 27039 states and 30402 transitions. [2023-11-29 01:48:59,654 INFO L78 Accepts]: Start accepts. Automaton has 27039 states and 30402 transitions. Word has length 344 [2023-11-29 01:48:59,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:59,654 INFO L495 AbstractCegarLoop]: Abstraction has 27039 states and 30402 transitions. [2023-11-29 01:48:59,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 01:48:59,655 INFO L276 IsEmpty]: Start isEmpty. Operand 27039 states and 30402 transitions. [2023-11-29 01:48:59,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-11-29 01:48:59,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:59,662 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:48:59,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:48:59,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:59,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:59,663 INFO L85 PathProgramCache]: Analyzing trace with hash 797729337, now seen corresponding path program 1 times [2023-11-29 01:48:59,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:59,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159270854] [2023-11-29 01:48:59,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:59,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-29 01:49:00,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:00,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159270854] [2023-11-29 01:49:00,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159270854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:49:00,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:49:00,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:49:00,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343662928] [2023-11-29 01:49:00,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:00,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:49:00,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:00,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:49:00,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:49:00,045 INFO L87 Difference]: Start difference. First operand 27039 states and 30402 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 01:49:03,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:03,929 INFO L93 Difference]: Finished difference Result 76607 states and 86495 transitions. [2023-11-29 01:49:03,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:49:03,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 376 [2023-11-29 01:49:03,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:04,002 INFO L225 Difference]: With dead ends: 76607 [2023-11-29 01:49:04,002 INFO L226 Difference]: Without dead ends: 46565 [2023-11-29 01:49:04,026 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 01:49:04,026 INFO L413 NwaCegarLoop]: 1284 mSDtfsCounter, 747 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:04,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1291 Invalid, 2821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 01:49:04,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46565 states. [2023-11-29 01:49:04,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46565 to 45063. [2023-11-29 01:49:04,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45063 states, 45062 states have (on average 1.0967111979051085) internal successors, (49420), 45062 states have internal predecessors, (49420), 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 01:49:04,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45063 states to 45063 states and 49420 transitions. [2023-11-29 01:49:04,568 INFO L78 Accepts]: Start accepts. Automaton has 45063 states and 49420 transitions. Word has length 376 [2023-11-29 01:49:04,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:04,569 INFO L495 AbstractCegarLoop]: Abstraction has 45063 states and 49420 transitions. [2023-11-29 01:49:04,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 01:49:04,569 INFO L276 IsEmpty]: Start isEmpty. Operand 45063 states and 49420 transitions. [2023-11-29 01:49:04,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2023-11-29 01:49:04,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:04,574 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-11-29 01:49:04,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:49:04,575 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:49:04,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash -749810867, now seen corresponding path program 1 times [2023-11-29 01:49:04,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:04,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474001111] [2023-11-29 01:49:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:04,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:04,907 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 323 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 01:49:04,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:04,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474001111] [2023-11-29 01:49:04,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474001111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:49:04,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:49:04,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:49:04,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729980420] [2023-11-29 01:49:04,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:04,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:49:04,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:04,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:49:04,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:49:04,910 INFO L87 Difference]: Start difference. First operand 45063 states and 49420 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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 01:49:08,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:08,611 INFO L93 Difference]: Finished difference Result 102892 states and 114219 transitions. [2023-11-29 01:49:08,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:49:08,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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 383 [2023-11-29 01:49:08,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:08,674 INFO L225 Difference]: With dead ends: 102892 [2023-11-29 01:49:08,674 INFO L226 Difference]: Without dead ends: 57830 [2023-11-29 01:49:08,701 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 01:49:08,702 INFO L413 NwaCegarLoop]: 1262 mSDtfsCounter, 696 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 2813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:08,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1269 Invalid, 2813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2132 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 01:49:08,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57830 states. [2023-11-29 01:49:09,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57830 to 56328. [2023-11-29 01:49:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56328 states, 56327 states have (on average 1.0937028423313864) internal successors, (61605), 56327 states have internal predecessors, (61605), 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 01:49:09,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56328 states to 56328 states and 61605 transitions. [2023-11-29 01:49:09,466 INFO L78 Accepts]: Start accepts. Automaton has 56328 states and 61605 transitions. Word has length 383 [2023-11-29 01:49:09,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:09,467 INFO L495 AbstractCegarLoop]: Abstraction has 56328 states and 61605 transitions. [2023-11-29 01:49:09,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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 01:49:09,467 INFO L276 IsEmpty]: Start isEmpty. Operand 56328 states and 61605 transitions. [2023-11-29 01:49:09,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2023-11-29 01:49:09,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:09,474 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 01:49:09,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:49:09,474 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:49:09,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:09,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1962421110, now seen corresponding path program 1 times [2023-11-29 01:49:09,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:09,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285293049] [2023-11-29 01:49:09,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:09,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-11-29 01:49:09,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:09,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285293049] [2023-11-29 01:49:09,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285293049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:49:09,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:49:09,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:49:09,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806781927] [2023-11-29 01:49:09,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:09,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:49:09,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:09,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:49:09,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:49:09,865 INFO L87 Difference]: Start difference. First operand 56328 states and 61605 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 01:49:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:13,394 INFO L93 Difference]: Finished difference Result 123920 states and 137091 transitions. [2023-11-29 01:49:13,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:49:13,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 405 [2023-11-29 01:49:13,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:13,457 INFO L225 Difference]: With dead ends: 123920 [2023-11-29 01:49:13,457 INFO L226 Difference]: Without dead ends: 67593 [2023-11-29 01:49:13,478 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 01:49:13,479 INFO L413 NwaCegarLoop]: 1252 mSDtfsCounter, 669 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2215 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 2659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:13,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1259 Invalid, 2659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2215 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 01:49:13,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67593 states. [2023-11-29 01:49:14,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67593 to 66091. [2023-11-29 01:49:14,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66091 states, 66090 states have (on average 1.0885459222272658) internal successors, (71942), 66090 states have internal predecessors, (71942), 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 01:49:14,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66091 states to 66091 states and 71942 transitions. [2023-11-29 01:49:14,364 INFO L78 Accepts]: Start accepts. Automaton has 66091 states and 71942 transitions. Word has length 405 [2023-11-29 01:49:14,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:14,365 INFO L495 AbstractCegarLoop]: Abstraction has 66091 states and 71942 transitions. [2023-11-29 01:49:14,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 01:49:14,365 INFO L276 IsEmpty]: Start isEmpty. Operand 66091 states and 71942 transitions. [2023-11-29 01:49:14,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2023-11-29 01:49:14,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:14,374 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, 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, 3, 3, 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] [2023-11-29 01:49:14,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:49:14,374 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:49:14,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:14,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1850081940, now seen corresponding path program 1 times [2023-11-29 01:49:14,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:14,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783169746] [2023-11-29 01:49:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:14,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:14,935 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 576 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-11-29 01:49:14,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:14,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783169746] [2023-11-29 01:49:14,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783169746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:49:14,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:49:14,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:49:14,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475419666] [2023-11-29 01:49:14,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:14,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:49:14,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:14,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:49:14,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:49:14,938 INFO L87 Difference]: Start difference. First operand 66091 states and 71942 transitions. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 01:49:18,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:18,709 INFO L93 Difference]: Finished difference Result 158466 states and 173232 transitions. [2023-11-29 01:49:18,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:49:18,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 466 [2023-11-29 01:49:18,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:18,798 INFO L225 Difference]: With dead ends: 158466 [2023-11-29 01:49:18,798 INFO L226 Difference]: Without dead ends: 92376 [2023-11-29 01:49:18,903 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 01:49:18,904 INFO L413 NwaCegarLoop]: 1116 mSDtfsCounter, 687 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2359 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 2928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 2359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:18,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 1123 Invalid, 2928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 2359 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 01:49:18,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92376 states. [2023-11-29 01:49:19,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92376 to 89372. [2023-11-29 01:49:19,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89372 states, 89371 states have (on average 1.0880934531335669) internal successors, (97244), 89371 states have internal predecessors, (97244), 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 01:49:19,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89372 states to 89372 states and 97244 transitions. [2023-11-29 01:49:19,993 INFO L78 Accepts]: Start accepts. Automaton has 89372 states and 97244 transitions. Word has length 466 [2023-11-29 01:49:19,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:19,994 INFO L495 AbstractCegarLoop]: Abstraction has 89372 states and 97244 transitions. [2023-11-29 01:49:19,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 01:49:19,994 INFO L276 IsEmpty]: Start isEmpty. Operand 89372 states and 97244 transitions. [2023-11-29 01:49:20,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-11-29 01:49:20,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:20,008 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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 01:49:20,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:49:20,008 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:49:20,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:20,009 INFO L85 PathProgramCache]: Analyzing trace with hash 909624117, now seen corresponding path program 1 times [2023-11-29 01:49:20,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:20,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798455392] [2023-11-29 01:49:20,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:20,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 420 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:49:21,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:21,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798455392] [2023-11-29 01:49:21,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798455392] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:49:21,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690517221] [2023-11-29 01:49:21,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:21,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:21,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:49:21,918 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:49:21,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:49:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:22,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:49:22,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:49:22,755 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-11-29 01:49:22,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:49:22,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690517221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:49:22,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:49:22,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 01:49:22,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38591572] [2023-11-29 01:49:22,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:22,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:49:22,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:22,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:49:22,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:49:22,758 INFO L87 Difference]: Start difference. First operand 89372 states and 97244 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 3 states have internal predecessors, (221), 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 01:49:28,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:28,992 INFO L93 Difference]: Finished difference Result 271869 states and 296688 transitions. [2023-11-29 01:49:28,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:49:28,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 3 states have internal predecessors, (221), 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 480 [2023-11-29 01:49:28,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:29,184 INFO L225 Difference]: With dead ends: 271869 [2023-11-29 01:49:29,184 INFO L226 Difference]: Without dead ends: 182498 [2023-11-29 01:49:29,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:49:29,231 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1844 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4630 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1844 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 5254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 4630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:29,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1844 Valid, 32 Invalid, 5254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 4630 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-29 01:49:29,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182498 states. [2023-11-29 01:49:31,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182498 to 180994. [2023-11-29 01:49:31,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180994 states, 180993 states have (on average 1.089246545446509) internal successors, (197146), 180993 states have internal predecessors, (197146), 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 01:49:32,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180994 states to 180994 states and 197146 transitions. [2023-11-29 01:49:32,034 INFO L78 Accepts]: Start accepts. Automaton has 180994 states and 197146 transitions. Word has length 480 [2023-11-29 01:49:32,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:32,035 INFO L495 AbstractCegarLoop]: Abstraction has 180994 states and 197146 transitions. [2023-11-29 01:49:32,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 3 states have internal predecessors, (221), 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 01:49:32,035 INFO L276 IsEmpty]: Start isEmpty. Operand 180994 states and 197146 transitions. [2023-11-29 01:49:32,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-11-29 01:49:32,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:32,055 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, 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, 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, 1, 1, 1, 1, 1, 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 01:49:32,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:49:32,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:32,256 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:49:32,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:32,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1551813152, now seen corresponding path program 1 times [2023-11-29 01:49:32,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:32,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429481165] [2023-11-29 01:49:32,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:32,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 405 proven. 108 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2023-11-29 01:49:33,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:33,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429481165] [2023-11-29 01:49:33,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429481165] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:49:33,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172019869] [2023-11-29 01:49:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:33,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:33,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:49:33,420 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:49:33,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:49:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:33,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:49:33,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:49:33,787 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 449 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-29 01:49:33,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:49:33,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172019869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:49:33,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:49:33,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 01:49:33,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000147800] [2023-11-29 01:49:33,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:33,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:49:33,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:33,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:49:33,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:49:33,790 INFO L87 Difference]: Start difference. First operand 180994 states and 197146 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 01:49:38,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:38,141 INFO L93 Difference]: Finished difference Result 361987 states and 394291 transitions. [2023-11-29 01:49:38,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:49:38,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 526 [2023-11-29 01:49:38,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:38,510 INFO L225 Difference]: With dead ends: 361987 [2023-11-29 01:49:38,510 INFO L226 Difference]: Without dead ends: 180994 [2023-11-29 01:49:38,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:49:38,566 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 719 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:38,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 396 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 01:49:38,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180994 states. [2023-11-29 01:49:40,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180994 to 174235. [2023-11-29 01:49:40,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174235 states, 174234 states have (on average 1.060177692069286) internal successors, (184719), 174234 states have internal predecessors, (184719), 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 01:49:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174235 states to 174235 states and 184719 transitions. [2023-11-29 01:49:40,949 INFO L78 Accepts]: Start accepts. Automaton has 174235 states and 184719 transitions. Word has length 526 [2023-11-29 01:49:40,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:40,949 INFO L495 AbstractCegarLoop]: Abstraction has 174235 states and 184719 transitions. [2023-11-29 01:49:40,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 01:49:40,950 INFO L276 IsEmpty]: Start isEmpty. Operand 174235 states and 184719 transitions. [2023-11-29 01:49:40,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2023-11-29 01:49:40,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:40,979 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:40,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:49:41,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fadf2cd-bee2-46d6-872a-296cb6ac0be2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:41,180 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:49:41,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:41,181 INFO L85 PathProgramCache]: Analyzing trace with hash 653773221, now seen corresponding path program 1 times [2023-11-29 01:49:41,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:41,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829045322] [2023-11-29 01:49:41,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:41,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 640 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-29 01:49:41,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:41,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829045322] [2023-11-29 01:49:41,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829045322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:49:41,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:49:41,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:49:41,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072501052] [2023-11-29 01:49:41,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:41,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:49:41,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:41,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:49:41,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:49:41,470 INFO L87 Difference]: Start difference. First operand 174235 states and 184719 transitions. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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 01:49:47,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:47,095 INFO L93 Difference]: Finished difference Result 452107 states and 481355 transitions. [2023-11-29 01:49:47,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:49:47,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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 615 [2023-11-29 01:49:47,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:47,420 INFO L225 Difference]: With dead ends: 452107 [2023-11-29 01:49:47,420 INFO L226 Difference]: Without dead ends: 277873 [2023-11-29 01:49:47,491 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 01:49:47,492 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 532 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:47,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 496 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 01:49:47,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277873 states. [2023-11-29 01:49:50,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277873 to 274118. [2023-11-29 01:49:50,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274118 states, 274117 states have (on average 1.0566546401718975) internal successors, (289647), 274117 states have internal predecessors, (289647), 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 01:49:51,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274118 states to 274118 states and 289647 transitions. [2023-11-29 01:49:51,332 INFO L78 Accepts]: Start accepts. Automaton has 274118 states and 289647 transitions. Word has length 615 [2023-11-29 01:49:51,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:51,332 INFO L495 AbstractCegarLoop]: Abstraction has 274118 states and 289647 transitions. [2023-11-29 01:49:51,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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 01:49:51,332 INFO L276 IsEmpty]: Start isEmpty. Operand 274118 states and 289647 transitions. [2023-11-29 01:49:51,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2023-11-29 01:49:51,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:51,355 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 01:49:51,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:49:51,356 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:49:51,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:51,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1166912403, now seen corresponding path program 1 times [2023-11-29 01:49:51,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:51,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527976370] [2023-11-29 01:49:51,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:51,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 853 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-11-29 01:49:51,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:51,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527976370] [2023-11-29 01:49:51,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527976370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:49:51,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:49:51,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:49:51,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661054246] [2023-11-29 01:49:51,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:51,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:49:51,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:51,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:49:51,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:49:51,805 INFO L87 Difference]: Start difference. First operand 274118 states and 289647 transitions. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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 01:49:57,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:57,965 INFO L93 Difference]: Finished difference Result 621833 states and 659065 transitions. [2023-11-29 01:49:57,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:49:57,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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 617 [2023-11-29 01:49:57,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:58,360 INFO L225 Difference]: With dead ends: 621833 [2023-11-29 01:49:58,360 INFO L226 Difference]: Without dead ends: 347716 [2023-11-29 01:49:58,426 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 01:49:58,427 INFO L413 NwaCegarLoop]: 1251 mSDtfsCounter, 691 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:58,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 1258 Invalid, 2815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-29 01:49:58,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347716 states. [2023-11-29 01:50:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347716 to 329692. [2023-11-29 01:50:02,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329692 states, 329691 states have (on average 1.0516574610771905) internal successors, (346722), 329691 states have internal predecessors, (346722), 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 01:50:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329692 states to 329692 states and 346722 transitions. [2023-11-29 01:50:02,878 INFO L78 Accepts]: Start accepts. Automaton has 329692 states and 346722 transitions. Word has length 617 [2023-11-29 01:50:02,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:50:02,878 INFO L495 AbstractCegarLoop]: Abstraction has 329692 states and 346722 transitions. [2023-11-29 01:50:02,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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 01:50:02,878 INFO L276 IsEmpty]: Start isEmpty. Operand 329692 states and 346722 transitions. [2023-11-29 01:50:02,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2023-11-29 01:50:02,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:50:02,897 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:02,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 01:50:02,898 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:50:02,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:50:02,898 INFO L85 PathProgramCache]: Analyzing trace with hash 7509497, now seen corresponding path program 1 times [2023-11-29 01:50:02,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:50:02,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946075329] [2023-11-29 01:50:02,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:02,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:50:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:50:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 700 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-11-29 01:50:03,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:50:03,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946075329] [2023-11-29 01:50:03,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946075329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:50:03,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:50:03,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:50:03,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263731690] [2023-11-29 01:50:03,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:50:03,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:50:03,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:50:03,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:50:03,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:50:03,683 INFO L87 Difference]: Start difference. First operand 329692 states and 346722 transitions. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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 01:50:09,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:50:09,253 INFO L93 Difference]: Finished difference Result 675905 states and 710345 transitions. [2023-11-29 01:50:09,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:50:09,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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 662 [2023-11-29 01:50:09,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:50:09,691 INFO L225 Difference]: With dead ends: 675905 [2023-11-29 01:50:09,692 INFO L226 Difference]: Without dead ends: 346214 [2023-11-29 01:50:09,813 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 01:50:09,814 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 550 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 2869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:50:09,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 223 Invalid, 2869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 01:50:10,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346214 states. [2023-11-29 01:50:13,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346214 to 325186. [2023-11-29 01:50:14,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325186 states, 325185 states have (on average 1.0503651767455449) internal successors, (341563), 325185 states have internal predecessors, (341563), 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 01:50:14,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325186 states to 325186 states and 341563 transitions. [2023-11-29 01:50:14,409 INFO L78 Accepts]: Start accepts. Automaton has 325186 states and 341563 transitions. Word has length 662 [2023-11-29 01:50:14,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:50:14,410 INFO L495 AbstractCegarLoop]: Abstraction has 325186 states and 341563 transitions. [2023-11-29 01:50:14,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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 01:50:14,410 INFO L276 IsEmpty]: Start isEmpty. Operand 325186 states and 341563 transitions. [2023-11-29 01:50:14,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-11-29 01:50:14,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:50:14,442 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, 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, 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, 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] [2023-11-29 01:50:14,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 01:50:14,442 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:50:14,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:50:14,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1544609351, now seen corresponding path program 1 times [2023-11-29 01:50:14,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:50:14,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085381711] [2023-11-29 01:50:14,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:14,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:50:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:50:15,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1349 backedges. 1065 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-11-29 01:50:15,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:50:15,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085381711] [2023-11-29 01:50:15,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085381711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:50:15,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:50:15,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:50:15,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540129756] [2023-11-29 01:50:15,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:50:15,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:50:15,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:50:15,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:50:15,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:50:15,466 INFO L87 Difference]: Start difference. First operand 325186 states and 341563 transitions. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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 01:50:21,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:50:21,135 INFO L93 Difference]: Finished difference Result 670648 states and 704015 transitions. [2023-11-29 01:50:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:50:21,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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 728 [2023-11-29 01:50:21,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:50:21,582 INFO L225 Difference]: With dead ends: 670648 [2023-11-29 01:50:21,582 INFO L226 Difference]: Without dead ends: 345463 [2023-11-29 01:50:21,701 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 01:50:21,702 INFO L413 NwaCegarLoop]: 1266 mSDtfsCounter, 590 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 2583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:50:21,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 1273 Invalid, 2583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2436 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 01:50:22,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345463 states. [2023-11-29 01:50:25,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345463 to 338704. [2023-11-29 01:50:25,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338704 states, 338703 states have (on average 1.0486001009734192) internal successors, (355164), 338703 states have internal predecessors, (355164), 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 01:50:26,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338704 states to 338704 states and 355164 transitions. [2023-11-29 01:50:26,542 INFO L78 Accepts]: Start accepts. Automaton has 338704 states and 355164 transitions. Word has length 728 [2023-11-29 01:50:26,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:50:26,542 INFO L495 AbstractCegarLoop]: Abstraction has 338704 states and 355164 transitions. [2023-11-29 01:50:26,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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 01:50:26,543 INFO L276 IsEmpty]: Start isEmpty. Operand 338704 states and 355164 transitions. [2023-11-29 01:50:26,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2023-11-29 01:50:26,581 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:50:26,581 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, 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, 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, 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] [2023-11-29 01:50:26,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 01:50:26,582 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:50:26,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:50:26,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1915837215, now seen corresponding path program 1 times [2023-11-29 01:50:26,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:50:26,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448368103] [2023-11-29 01:50:26,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:26,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:50:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:50:26,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 949 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-11-29 01:50:26,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:50:26,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448368103] [2023-11-29 01:50:26,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448368103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:50:26,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:50:26,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:50:26,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781802251] [2023-11-29 01:50:26,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:50:26,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:50:26,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:50:26,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:50:26,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:50:26,917 INFO L87 Difference]: Start difference. First operand 338704 states and 355164 transitions. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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 01:50:32,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:50:32,710 INFO L93 Difference]: Finished difference Result 693929 states and 727257 transitions. [2023-11-29 01:50:32,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:50:32,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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 755 [2023-11-29 01:50:32,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:50:33,147 INFO L225 Difference]: With dead ends: 693929 [2023-11-29 01:50:33,147 INFO L226 Difference]: Without dead ends: 355226 [2023-11-29 01:50:33,274 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 01:50:33,275 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 721 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 2892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:50:33,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 213 Invalid, 2892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 2253 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 01:50:33,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355226 states. [2023-11-29 01:50:37,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355226 to 336451. [2023-11-29 01:50:37,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336451 states, 336450 states have (on average 1.0476118293951553) internal successors, (352469), 336450 states have internal predecessors, (352469), 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 01:50:37,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336451 states to 336451 states and 352469 transitions. [2023-11-29 01:50:37,691 INFO L78 Accepts]: Start accepts. Automaton has 336451 states and 352469 transitions. Word has length 755 [2023-11-29 01:50:37,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:50:37,691 INFO L495 AbstractCegarLoop]: Abstraction has 336451 states and 352469 transitions. [2023-11-29 01:50:37,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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 01:50:37,691 INFO L276 IsEmpty]: Start isEmpty. Operand 336451 states and 352469 transitions. [2023-11-29 01:50:37,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2023-11-29 01:50:37,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:50:37,719 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, 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, 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] [2023-11-29 01:50:37,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 01:50:37,719 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:50:37,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:50:37,720 INFO L85 PathProgramCache]: Analyzing trace with hash 661423078, now seen corresponding path program 1 times [2023-11-29 01:50:37,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:50:37,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195917459] [2023-11-29 01:50:37,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:37,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:50:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:50:38,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1460 backedges. 1139 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-11-29 01:50:38,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:50:38,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195917459] [2023-11-29 01:50:38,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195917459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:50:38,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:50:38,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:50:38,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469646498] [2023-11-29 01:50:38,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:50:38,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:50:38,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:50:38,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:50:38,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:50:38,832 INFO L87 Difference]: Start difference. First operand 336451 states and 352469 transitions. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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 01:50:44,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:50:44,021 INFO L93 Difference]: Finished difference Result 681162 states and 713397 transitions. [2023-11-29 01:50:44,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:50:44,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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 765 [2023-11-29 01:50:44,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:50:44,465 INFO L225 Difference]: With dead ends: 681162 [2023-11-29 01:50:44,465 INFO L226 Difference]: Without dead ends: 344712 [2023-11-29 01:50:44,588 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 01:50:44,589 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 603 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 2378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:50:44,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 1239 Invalid, 2378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 01:50:44,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344712 states. [2023-11-29 01:50:48,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344712 to 336451. [2023-11-29 01:50:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336451 states, 336450 states have (on average 1.0466161390994204) internal successors, (352134), 336450 states have internal predecessors, (352134), 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 01:50:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336451 states to 336451 states and 352134 transitions. [2023-11-29 01:50:48,976 INFO L78 Accepts]: Start accepts. Automaton has 336451 states and 352134 transitions. Word has length 765 [2023-11-29 01:50:48,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:50:48,977 INFO L495 AbstractCegarLoop]: Abstraction has 336451 states and 352134 transitions. [2023-11-29 01:50:48,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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 01:50:48,977 INFO L276 IsEmpty]: Start isEmpty. Operand 336451 states and 352134 transitions. [2023-11-29 01:50:49,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2023-11-29 01:50:49,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:50:49,006 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:49,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 01:50:49,006 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:50:49,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:50:49,007 INFO L85 PathProgramCache]: Analyzing trace with hash -2007209609, now seen corresponding path program 1 times [2023-11-29 01:50:49,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:50:49,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309870697] [2023-11-29 01:50:49,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:49,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:50:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:50:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1758 backedges. 1460 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-29 01:50:50,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:50:50,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309870697] [2023-11-29 01:50:50,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309870697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:50:50,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:50:50,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:50:50,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930833495] [2023-11-29 01:50:50,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:50:50,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:50:50,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:50:50,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:50:50,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:50:50,072 INFO L87 Difference]: Start difference. First operand 336451 states and 352134 transitions. Second operand has 4 states, 4 states have (on average 133.25) internal successors, (533), 4 states have internal predecessors, (533), 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 01:50:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:50:56,187 INFO L93 Difference]: Finished difference Result 681162 states and 712775 transitions. [2023-11-29 01:50:56,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:50:56,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 133.25) internal successors, (533), 4 states have internal predecessors, (533), 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 01:50:56,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:50:56,582 INFO L225 Difference]: With dead ends: 681162 [2023-11-29 01:50:56,582 INFO L226 Difference]: Without dead ends: 344712 [2023-11-29 01:50:57,044 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 01:50:57,045 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 1323 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3906 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 4156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 3906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:50:57,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 1287 Invalid, 4156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 3906 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-29 01:50:57,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344712 states. [2023-11-29 01:51:00,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344712 to 343961. [2023-11-29 01:51:00,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343961 states, 343960 states have (on average 1.044496453075939) internal successors, (359265), 343960 states have internal predecessors, (359265), 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 01:51:01,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343961 states to 343961 states and 359265 transitions. [2023-11-29 01:51:01,512 INFO L78 Accepts]: Start accepts. Automaton has 343961 states and 359265 transitions. Word has length 784 [2023-11-29 01:51:01,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:51:01,512 INFO L495 AbstractCegarLoop]: Abstraction has 343961 states and 359265 transitions. [2023-11-29 01:51:01,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.25) internal successors, (533), 4 states have internal predecessors, (533), 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 01:51:01,513 INFO L276 IsEmpty]: Start isEmpty. Operand 343961 states and 359265 transitions. [2023-11-29 01:51:01,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2023-11-29 01:51:01,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:51:01,539 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, 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, 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, 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, 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] [2023-11-29 01:51:01,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 01:51:01,539 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:51:01,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:51:01,540 INFO L85 PathProgramCache]: Analyzing trace with hash 811626749, now seen corresponding path program 1 times [2023-11-29 01:51:01,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:51:01,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698148829] [2023-11-29 01:51:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:01,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:51:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:51:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1790 backedges. 1227 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2023-11-29 01:51:02,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:51:02,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698148829] [2023-11-29 01:51:02,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698148829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:51:02,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:51:02,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:51:02,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541483846] [2023-11-29 01:51:02,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:51:02,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:51:02,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:51:02,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:51:02,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:51:02,707 INFO L87 Difference]: Start difference. First operand 343961 states and 359265 transitions. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 01:51:07,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:51:07,874 INFO L93 Difference]: Finished difference Result 692427 states and 723075 transitions. [2023-11-29 01:51:07,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:51:07,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 792 [2023-11-29 01:51:07,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:51:08,299 INFO L225 Difference]: With dead ends: 692427 [2023-11-29 01:51:08,299 INFO L226 Difference]: Without dead ends: 346965 [2023-11-29 01:51:08,437 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 01:51:08,438 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 793 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2119 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 2630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 2119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:51:08,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 897 Invalid, 2630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 2119 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 01:51:08,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346965 states. [2023-11-29 01:51:12,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346965 to 336451. [2023-11-29 01:51:12,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336451 states, 336450 states have (on average 1.0390518650616734) internal successors, (349589), 336450 states have internal predecessors, (349589), 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 01:51:13,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336451 states to 336451 states and 349589 transitions. [2023-11-29 01:51:13,174 INFO L78 Accepts]: Start accepts. Automaton has 336451 states and 349589 transitions. Word has length 792 [2023-11-29 01:51:13,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:51:13,174 INFO L495 AbstractCegarLoop]: Abstraction has 336451 states and 349589 transitions. [2023-11-29 01:51:13,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 01:51:13,175 INFO L276 IsEmpty]: Start isEmpty. Operand 336451 states and 349589 transitions. [2023-11-29 01:51:13,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2023-11-29 01:51:13,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:51:13,212 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:13,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 01:51:13,212 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:51:13,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:51:13,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2109614788, now seen corresponding path program 1 times [2023-11-29 01:51:13,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:51:13,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187153927] [2023-11-29 01:51:13,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:13,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:51:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:51:14,052 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 744 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-29 01:51:14,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:51:14,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187153927] [2023-11-29 01:51:14,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187153927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:51:14,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:51:14,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:51:14,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398292801] [2023-11-29 01:51:14,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:51:14,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:51:14,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:51:14,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:51:14,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:51:14,055 INFO L87 Difference]: Start difference. First operand 336451 states and 349589 transitions. Second operand has 4 states, 4 states have (on average 173.25) internal successors, (693), 4 states have internal predecessors, (693), 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 01:51:22,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:51:22,147 INFO L93 Difference]: Finished difference Result 705945 states and 733401 transitions. [2023-11-29 01:51:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:51:22,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 173.25) internal successors, (693), 4 states have internal predecessors, (693), 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 01:51:22,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:51:22,584 INFO L225 Difference]: With dead ends: 705945 [2023-11-29 01:51:22,584 INFO L226 Difference]: Without dead ends: 367993 [2023-11-29 01:51:22,715 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 01:51:22,715 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 1045 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4488 mSolverCounterSat, 832 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 5320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 832 IncrementalHoareTripleChecker+Valid, 4488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:51:22,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 306 Invalid, 5320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [832 Valid, 4488 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-29 01:51:23,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367993 states. [2023-11-29 01:51:26,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367993 to 341708. [2023-11-29 01:51:26,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341708 states, 341707 states have (on average 1.0345266558776964) internal successors, (353505), 341707 states have internal predecessors, (353505), 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 01:51:27,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341708 states to 341708 states and 353505 transitions. [2023-11-29 01:51:27,058 INFO L78 Accepts]: Start accepts. Automaton has 341708 states and 353505 transitions. Word has length 827 [2023-11-29 01:51:27,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:51:27,059 INFO L495 AbstractCegarLoop]: Abstraction has 341708 states and 353505 transitions. [2023-11-29 01:51:27,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.25) internal successors, (693), 4 states have internal predecessors, (693), 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 01:51:27,059 INFO L276 IsEmpty]: Start isEmpty. Operand 341708 states and 353505 transitions.