./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label58.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/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_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label58.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/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_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/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 18d91842aba67b15ef1ce5fcca24e96a1a752cfb2bfcabae8ea7bcde2585be09 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:12:41,319 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:12:41,393 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:12:41,398 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:12:41,398 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:12:41,424 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:12:41,425 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:12:41,426 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:12:41,426 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:12:41,427 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:12:41,428 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:12:41,428 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:12:41,429 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:12:41,430 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:12:41,430 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:12:41,431 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:12:41,431 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:12:41,432 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:12:41,433 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:12:41,433 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:12:41,434 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:12:41,434 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:12:41,435 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:12:41,435 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:12:41,436 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:12:41,436 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:12:41,437 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:12:41,437 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:12:41,438 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:12:41,438 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:12:41,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:12:41,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:12:41,439 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:12:41,440 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:12:41,440 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:12:41,440 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:12:41,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:12:41,441 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:12:41,441 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:12:41,441 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:12:41,441 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:12:41,441 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:12:41,442 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_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18d91842aba67b15ef1ce5fcca24e96a1a752cfb2bfcabae8ea7bcde2585be09 [2023-11-29 06:12:41,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:12:41,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:12:41,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:12:41,705 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:12:41,705 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:12:41,706 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/eca-rers2012/Problem13_label58.c [2023-11-29 06:12:44,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:12:45,166 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:12:45,167 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/sv-benchmarks/c/eca-rers2012/Problem13_label58.c [2023-11-29 06:12:45,205 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/data/c038fdd66/11723d809de644369a7a047e704cde5d/FLAG8fbf3b425 [2023-11-29 06:12:45,221 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/data/c038fdd66/11723d809de644369a7a047e704cde5d [2023-11-29 06:12:45,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:12:45,226 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:12:45,227 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:12:45,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:12:45,233 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:12:45,234 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:12:45" (1/1) ... [2023-11-29 06:12:45,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2868cef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:12:45, skipping insertion in model container [2023-11-29 06:12:45,236 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:12:45" (1/1) ... [2023-11-29 06:12:45,422 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:12:45,683 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_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/sv-benchmarks/c/eca-rers2012/Problem13_label58.c[2071,2084] [2023-11-29 06:12:46,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:12:46,852 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:12:46,870 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_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/sv-benchmarks/c/eca-rers2012/Problem13_label58.c[2071,2084] [2023-11-29 06:12:47,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:12:47,551 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:12:47,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:12:47 WrapperNode [2023-11-29 06:12:47,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:12:47,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:12:47,553 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:12:47,553 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:12:47,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:12:47" (1/1) ... [2023-11-29 06:12:47,646 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:12:47" (1/1) ... [2023-11-29 06:12:48,191 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5584 [2023-11-29 06:12:48,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:12:48,192 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:12:48,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:12:48,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:12:48,206 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:12:47" (1/1) ... [2023-11-29 06:12:48,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:12:47" (1/1) ... [2023-11-29 06:12:48,295 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:12:47" (1/1) ... [2023-11-29 06:12:48,522 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 06:12:48,522 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:12:47" (1/1) ... [2023-11-29 06:12:48,522 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:12:47" (1/1) ... [2023-11-29 06:12:48,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:12:47" (1/1) ... [2023-11-29 06:12:48,933 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:12:47" (1/1) ... [2023-11-29 06:12:49,025 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:12:47" (1/1) ... [2023-11-29 06:12:49,047 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:12:47" (1/1) ... [2023-11-29 06:12:49,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:12:49,184 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:12:49,185 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:12:49,185 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:12:49,186 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:12:47" (1/1) ... [2023-11-29 06:12:49,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:12:49,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:12:49,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:12:49,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:12:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:12:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:12:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:12:49,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:12:49,354 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:12:49,357 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:12:56,246 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:12:56,320 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:12:56,320 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:12:56,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:12:56 BoogieIcfgContainer [2023-11-29 06:12:56,322 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:12:56,325 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:12:56,326 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:12:56,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:12:56,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:12:45" (1/3) ... [2023-11-29 06:12:56,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788a1d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:12:56, skipping insertion in model container [2023-11-29 06:12:56,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:12:47" (2/3) ... [2023-11-29 06:12:56,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788a1d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:12:56, skipping insertion in model container [2023-11-29 06:12:56,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:12:56" (3/3) ... [2023-11-29 06:12:56,332 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label58.c [2023-11-29 06:12:56,350 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:12:56,351 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:12:56,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:12:56,441 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;@7b7b639b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:12:56,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:12:56,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:12:56,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-29 06:12:56,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:12:56,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:12:56,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:12:56,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:12:56,464 INFO L85 PathProgramCache]: Analyzing trace with hash 757761469, now seen corresponding path program 1 times [2023-11-29 06:12:56,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:12:56,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495502218] [2023-11-29 06:12:56,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:12:56,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:12:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:12:56,619 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 06:12:56,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:12:56,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495502218] [2023-11-29 06:12:56,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495502218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:12:56,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:12:56,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:12:56,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623371262] [2023-11-29 06:12:56,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:12:56,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:12:56,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:12:56,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:12:56,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:12:56,659 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 06:12:56,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:12:56,751 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-11-29 06:12:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:12:56,753 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2023-11-29 06:12:56,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:12:56,774 INFO L225 Difference]: With dead ends: 2071 [2023-11-29 06:12:56,774 INFO L226 Difference]: Without dead ends: 1034 [2023-11-29 06:12:56,781 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 06:12:56,784 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:12:56,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:12:56,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-11-29 06:12:56,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-11-29 06:12:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:12:56,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-11-29 06:12:56,890 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 11 [2023-11-29 06:12:56,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:12:56,891 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-11-29 06:12:56,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 06:12:56,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-11-29 06:12:56,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-29 06:12:56,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:12:56,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:12:56,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:12:56,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:12:56,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:12:56,894 INFO L85 PathProgramCache]: Analyzing trace with hash 740187147, now seen corresponding path program 1 times [2023-11-29 06:12:56,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:12:56,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146364870] [2023-11-29 06:12:56,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:12:56,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:12:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:12:56,980 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 06:12:56,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:12:56,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146364870] [2023-11-29 06:12:56,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146364870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:12:56,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:12:56,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:12:56,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987755030] [2023-11-29 06:12:56,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:12:56,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:12:56,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:12:56,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:12:56,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:12:56,985 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 06:13:02,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:02,274 INFO L93 Difference]: Finished difference Result 2976 states and 5471 transitions. [2023-11-29 06:13:02,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:13:02,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2023-11-29 06:13:02,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:02,288 INFO L225 Difference]: With dead ends: 2976 [2023-11-29 06:13:02,288 INFO L226 Difference]: Without dead ends: 1943 [2023-11-29 06:13:02,289 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 06:13:02,291 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 943 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 3050 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 3050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:02,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 538 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 3050 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-29 06:13:02,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2023-11-29 06:13:02,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1872. [2023-11-29 06:13:02,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1871 states have (on average 1.7397113842864778) internal successors, (3255), 1871 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:13:02,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 3255 transitions. [2023-11-29 06:13:02,339 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 3255 transitions. Word has length 11 [2023-11-29 06:13:02,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:02,340 INFO L495 AbstractCegarLoop]: Abstraction has 1872 states and 3255 transitions. [2023-11-29 06:13:02,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 06:13:02,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 3255 transitions. [2023-11-29 06:13:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 06:13:02,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:02,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:13:02,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:13:02,343 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:02,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:02,344 INFO L85 PathProgramCache]: Analyzing trace with hash 197939521, now seen corresponding path program 1 times [2023-11-29 06:13:02,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:02,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338370600] [2023-11-29 06:13:02,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:02,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:02,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:02,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:02,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338370600] [2023-11-29 06:13:02,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338370600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:02,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:02,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:13:02,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786303248] [2023-11-29 06:13:02,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:02,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:13:02,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:02,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:13:02,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:13:02,619 INFO L87 Difference]: Start difference. First operand 1872 states and 3255 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 06:13:07,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:07,045 INFO L93 Difference]: Finished difference Result 5350 states and 9368 transitions. [2023-11-29 06:13:07,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:13:07,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-11-29 06:13:07,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:07,069 INFO L225 Difference]: With dead ends: 5350 [2023-11-29 06:13:07,069 INFO L226 Difference]: Without dead ends: 3479 [2023-11-29 06:13:07,073 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 06:13:07,074 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 884 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:07,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1077 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-29 06:13:07,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2023-11-29 06:13:07,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3478. [2023-11-29 06:13:07,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 3477 states have (on average 1.5188380788035662) internal successors, (5281), 3477 states have internal predecessors, (5281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:13:07,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 5281 transitions. [2023-11-29 06:13:07,171 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 5281 transitions. Word has length 76 [2023-11-29 06:13:07,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:07,172 INFO L495 AbstractCegarLoop]: Abstraction has 3478 states and 5281 transitions. [2023-11-29 06:13:07,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 06:13:07,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 5281 transitions. [2023-11-29 06:13:07,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 06:13:07,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:07,176 INFO L195 NwaCegarLoop]: trace histogram [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 06:13:07,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:13:07,177 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:07,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:07,177 INFO L85 PathProgramCache]: Analyzing trace with hash -221495940, now seen corresponding path program 1 times [2023-11-29 06:13:07,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:07,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052215786] [2023-11-29 06:13:07,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:07,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:07,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:07,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:07,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052215786] [2023-11-29 06:13:07,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052215786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:07,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:07,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:13:07,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947749402] [2023-11-29 06:13:07,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:07,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:13:07,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:07,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:13:07,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:13:07,320 INFO L87 Difference]: Start difference. First operand 3478 states and 5281 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 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 06:13:11,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:11,832 INFO L93 Difference]: Finished difference Result 10143 states and 15438 transitions. [2023-11-29 06:13:11,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:13:11,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-29 06:13:11,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:11,864 INFO L225 Difference]: With dead ends: 10143 [2023-11-29 06:13:11,864 INFO L226 Difference]: Without dead ends: 6666 [2023-11-29 06:13:11,869 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 06:13:11,871 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 977 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:11,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 877 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-29 06:13:11,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6666 states. [2023-11-29 06:13:11,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6666 to 6656. [2023-11-29 06:13:11,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6656 states, 6655 states have (on average 1.3729526671675432) internal successors, (9137), 6655 states have internal predecessors, (9137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:13:12,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6656 states to 6656 states and 9137 transitions. [2023-11-29 06:13:12,005 INFO L78 Accepts]: Start accepts. Automaton has 6656 states and 9137 transitions. Word has length 78 [2023-11-29 06:13:12,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:12,006 INFO L495 AbstractCegarLoop]: Abstraction has 6656 states and 9137 transitions. [2023-11-29 06:13:12,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 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 06:13:12,006 INFO L276 IsEmpty]: Start isEmpty. Operand 6656 states and 9137 transitions. [2023-11-29 06:13:12,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-29 06:13:12,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:12,009 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:13:12,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:13:12,009 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:12,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:12,010 INFO L85 PathProgramCache]: Analyzing trace with hash 500471917, now seen corresponding path program 1 times [2023-11-29 06:13:12,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:12,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095593497] [2023-11-29 06:13:12,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:12,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:12,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:12,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095593497] [2023-11-29 06:13:12,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095593497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:12,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:12,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:13:12,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684935786] [2023-11-29 06:13:12,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:12,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:13:12,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:12,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:13:12,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:13:12,147 INFO L87 Difference]: Start difference. First operand 6656 states and 9137 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 06:13:16,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:16,897 INFO L93 Difference]: Finished difference Result 19636 states and 26968 transitions. [2023-11-29 06:13:16,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:13:16,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-11-29 06:13:16,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:16,961 INFO L225 Difference]: With dead ends: 19636 [2023-11-29 06:13:16,961 INFO L226 Difference]: Without dead ends: 12981 [2023-11-29 06:13:16,971 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 06:13:16,972 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 791 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:16,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1161 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-29 06:13:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12981 states. [2023-11-29 06:13:17,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12981 to 12174. [2023-11-29 06:13:17,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12174 states, 12173 states have (on average 1.2529368274049124) internal successors, (15252), 12173 states have internal predecessors, (15252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:13:17,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12174 states to 12174 states and 15252 transitions. [2023-11-29 06:13:17,228 INFO L78 Accepts]: Start accepts. Automaton has 12174 states and 15252 transitions. Word has length 84 [2023-11-29 06:13:17,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:17,229 INFO L495 AbstractCegarLoop]: Abstraction has 12174 states and 15252 transitions. [2023-11-29 06:13:17,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 06:13:17,229 INFO L276 IsEmpty]: Start isEmpty. Operand 12174 states and 15252 transitions. [2023-11-29 06:13:17,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 06:13:17,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:17,232 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:13:17,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:13:17,232 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:17,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:17,233 INFO L85 PathProgramCache]: Analyzing trace with hash 50340485, now seen corresponding path program 1 times [2023-11-29 06:13:17,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:17,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700522421] [2023-11-29 06:13:17,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:17,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:17,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:17,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700522421] [2023-11-29 06:13:17,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700522421] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:13:17,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486114855] [2023-11-29 06:13:17,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:17,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:13:17,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:13:17,545 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:13:17,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:13:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:17,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:13:17,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:13:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 06:13:17,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:13:17,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486114855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:17,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:13:17,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-11-29 06:13:17,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203466716] [2023-11-29 06:13:17,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:17,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:13:17,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:17,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:13:17,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:13:17,844 INFO L87 Difference]: Start difference. First operand 12174 states and 15252 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:13:22,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:22,463 INFO L93 Difference]: Finished difference Result 36311 states and 45490 transitions. [2023-11-29 06:13:22,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:13:22,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 06:13:22,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:22,502 INFO L225 Difference]: With dead ends: 36311 [2023-11-29 06:13:22,502 INFO L226 Difference]: Without dead ends: 24138 [2023-11-29 06:13:22,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:13:22,513 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 1053 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 2632 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 3176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 2632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:22,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 920 Invalid, 3176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 2632 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-29 06:13:22,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24138 states. [2023-11-29 06:13:22,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24138 to 24120. [2023-11-29 06:13:22,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24120 states, 24119 states have (on average 1.2004229031054356) internal successors, (28953), 24119 states have internal predecessors, (28953), 0 states have call successors, (0), 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 06:13:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24120 states to 24120 states and 28953 transitions. [2023-11-29 06:13:22,828 INFO L78 Accepts]: Start accepts. Automaton has 24120 states and 28953 transitions. Word has length 100 [2023-11-29 06:13:22,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:22,829 INFO L495 AbstractCegarLoop]: Abstraction has 24120 states and 28953 transitions. [2023-11-29 06:13:22,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:13:22,829 INFO L276 IsEmpty]: Start isEmpty. Operand 24120 states and 28953 transitions. [2023-11-29 06:13:22,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-29 06:13:22,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:22,834 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:13:22,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:13:23,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 06:13:23,035 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:23,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:23,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1749023240, now seen corresponding path program 1 times [2023-11-29 06:13:23,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:23,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045039314] [2023-11-29 06:13:23,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:23,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 06:13:23,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:23,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045039314] [2023-11-29 06:13:23,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045039314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:23,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:23,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:13:23,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929092739] [2023-11-29 06:13:23,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:23,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:13:23,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:23,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:13:23,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:13:23,539 INFO L87 Difference]: Start difference. First operand 24120 states and 28953 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 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 06:13:27,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:27,625 INFO L93 Difference]: Finished difference Result 49026 states and 58707 transitions. [2023-11-29 06:13:27,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:13:27,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 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 203 [2023-11-29 06:13:27,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:27,684 INFO L225 Difference]: With dead ends: 49026 [2023-11-29 06:13:27,684 INFO L226 Difference]: Without dead ends: 24907 [2023-11-29 06:13:27,700 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 06:13:27,701 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:27,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1210 Invalid, 2530 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-29 06:13:27,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24907 states. [2023-11-29 06:13:27,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24907 to 24907. [2023-11-29 06:13:27,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24907 states, 24906 states have (on average 1.194290532401831) internal successors, (29745), 24906 states have internal predecessors, (29745), 0 states have call successors, (0), 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 06:13:27,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24907 states to 24907 states and 29745 transitions. [2023-11-29 06:13:27,999 INFO L78 Accepts]: Start accepts. Automaton has 24907 states and 29745 transitions. Word has length 203 [2023-11-29 06:13:28,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:28,000 INFO L495 AbstractCegarLoop]: Abstraction has 24907 states and 29745 transitions. [2023-11-29 06:13:28,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 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 06:13:28,001 INFO L276 IsEmpty]: Start isEmpty. Operand 24907 states and 29745 transitions. [2023-11-29 06:13:28,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 06:13:28,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:28,003 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:13:28,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 06:13:28,003 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:28,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:28,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1026097377, now seen corresponding path program 1 times [2023-11-29 06:13:28,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:28,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780736800] [2023-11-29 06:13:28,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:28,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:28,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:28,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780736800] [2023-11-29 06:13:28,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780736800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:28,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:28,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:13:28,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144294809] [2023-11-29 06:13:28,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:28,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:13:28,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:28,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:13:28,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:13:28,193 INFO L87 Difference]: Start difference. First operand 24907 states and 29745 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 06:13:32,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:32,714 INFO L93 Difference]: Finished difference Result 61633 states and 75006 transitions. [2023-11-29 06:13:32,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:13:32,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 210 [2023-11-29 06:13:32,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:32,763 INFO L225 Difference]: With dead ends: 61633 [2023-11-29 06:13:32,763 INFO L226 Difference]: Without dead ends: 37514 [2023-11-29 06:13:32,783 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 06:13:32,784 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 859 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:32,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 944 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-29 06:13:32,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37514 states. [2023-11-29 06:13:33,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37514 to 35929. [2023-11-29 06:13:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35929 states, 35928 states have (on average 1.1822812291249165) internal successors, (42477), 35928 states have internal predecessors, (42477), 0 states have call successors, (0), 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 06:13:33,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35929 states to 35929 states and 42477 transitions. [2023-11-29 06:13:33,281 INFO L78 Accepts]: Start accepts. Automaton has 35929 states and 42477 transitions. Word has length 210 [2023-11-29 06:13:33,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:33,282 INFO L495 AbstractCegarLoop]: Abstraction has 35929 states and 42477 transitions. [2023-11-29 06:13:33,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 06:13:33,282 INFO L276 IsEmpty]: Start isEmpty. Operand 35929 states and 42477 transitions. [2023-11-29 06:13:33,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-29 06:13:33,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:33,287 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:13:33,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:13:33,288 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:33,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:33,289 INFO L85 PathProgramCache]: Analyzing trace with hash -98545812, now seen corresponding path program 1 times [2023-11-29 06:13:33,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:33,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309665207] [2023-11-29 06:13:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:33,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:33,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:33,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309665207] [2023-11-29 06:13:33,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309665207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:33,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:33,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:13:33,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738708316] [2023-11-29 06:13:33,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:33,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:13:33,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:33,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:13:33,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:13:33,425 INFO L87 Difference]: Start difference. First operand 35929 states and 42477 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:13:37,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:37,755 INFO L93 Difference]: Finished difference Result 70919 states and 83954 transitions. [2023-11-29 06:13:37,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:13:37,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2023-11-29 06:13:37,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:37,795 INFO L225 Difference]: With dead ends: 70919 [2023-11-29 06:13:37,795 INFO L226 Difference]: Without dead ends: 35778 [2023-11-29 06:13:37,815 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 06:13:37,816 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 1036 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2351 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 2953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 2351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:37,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 1638 Invalid, 2953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 2351 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-29 06:13:37,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35778 states. [2023-11-29 06:13:38,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35778 to 34200. [2023-11-29 06:13:38,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34200 states, 34199 states have (on average 1.129594432585748) internal successors, (38631), 34199 states have internal predecessors, (38631), 0 states have call successors, (0), 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 06:13:38,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34200 states to 34200 states and 38631 transitions. [2023-11-29 06:13:38,293 INFO L78 Accepts]: Start accepts. Automaton has 34200 states and 38631 transitions. Word has length 225 [2023-11-29 06:13:38,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:38,294 INFO L495 AbstractCegarLoop]: Abstraction has 34200 states and 38631 transitions. [2023-11-29 06:13:38,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:13:38,294 INFO L276 IsEmpty]: Start isEmpty. Operand 34200 states and 38631 transitions. [2023-11-29 06:13:38,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2023-11-29 06:13:38,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:38,301 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:13:38,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:13:38,301 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:38,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:38,302 INFO L85 PathProgramCache]: Analyzing trace with hash 173197257, now seen corresponding path program 1 times [2023-11-29 06:13:38,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:38,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218644102] [2023-11-29 06:13:38,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:38,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:39,011 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-29 06:13:39,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:39,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218644102] [2023-11-29 06:13:39,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218644102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:39,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:39,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:13:39,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171365133] [2023-11-29 06:13:39,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:39,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:13:39,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:39,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:13:39,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:13:39,014 INFO L87 Difference]: Start difference. First operand 34200 states and 38631 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 06:13:46,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:46,561 INFO L93 Difference]: Finished difference Result 109365 states and 124638 transitions. [2023-11-29 06:13:46,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:13:46,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 299 [2023-11-29 06:13:46,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:46,644 INFO L225 Difference]: With dead ends: 109365 [2023-11-29 06:13:46,644 INFO L226 Difference]: Without dead ends: 75953 [2023-11-29 06:13:46,667 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 06:13:46,668 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 1658 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 5326 mSolverCounterSat, 872 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 6198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 872 IncrementalHoareTripleChecker+Valid, 5326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:46,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 885 Invalid, 6198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [872 Valid, 5326 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-11-29 06:13:46,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75953 states. [2023-11-29 06:13:47,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75953 to 72801. [2023-11-29 06:13:47,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72801 states, 72800 states have (on average 1.1204258241758243) internal successors, (81567), 72800 states have internal predecessors, (81567), 0 states have call successors, (0), 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 06:13:47,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72801 states to 72801 states and 81567 transitions. [2023-11-29 06:13:47,571 INFO L78 Accepts]: Start accepts. Automaton has 72801 states and 81567 transitions. Word has length 299 [2023-11-29 06:13:47,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:47,572 INFO L495 AbstractCegarLoop]: Abstraction has 72801 states and 81567 transitions. [2023-11-29 06:13:47,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 06:13:47,572 INFO L276 IsEmpty]: Start isEmpty. Operand 72801 states and 81567 transitions. [2023-11-29 06:13:47,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2023-11-29 06:13:47,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:47,578 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:13:47,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:13:47,578 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:47,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:47,579 INFO L85 PathProgramCache]: Analyzing trace with hash -416765883, now seen corresponding path program 1 times [2023-11-29 06:13:47,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:47,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275554589] [2023-11-29 06:13:47,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:47,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 06:13:47,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:47,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275554589] [2023-11-29 06:13:47,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275554589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:47,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:47,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:13:47,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320932197] [2023-11-29 06:13:47,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:47,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:13:47,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:47,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:13:47,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:13:47,829 INFO L87 Difference]: Start difference. First operand 72801 states and 81567 transitions. Second operand has 4 states, 4 states have (on average 72.5) 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 06:13:57,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:57,555 INFO L93 Difference]: Finished difference Result 202478 states and 227409 transitions. [2023-11-29 06:13:57,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:13:57,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) 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 299 [2023-11-29 06:13:57,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:57,727 INFO L225 Difference]: With dead ends: 202478 [2023-11-29 06:13:57,727 INFO L226 Difference]: Without dead ends: 130465 [2023-11-29 06:13:57,772 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 06:13:57,773 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 1712 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 6601 mSolverCounterSat, 1050 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 7651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1050 IncrementalHoareTripleChecker+Valid, 6601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:57,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1712 Valid, 776 Invalid, 7651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1050 Valid, 6601 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-11-29 06:13:57,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130465 states. [2023-11-29 06:13:59,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130465 to 128761. [2023-11-29 06:13:59,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128761 states, 128760 states have (on average 1.113443616029823) internal successors, (143367), 128760 states have internal predecessors, (143367), 0 states have call successors, (0), 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 06:13:59,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128761 states to 128761 states and 143367 transitions. [2023-11-29 06:13:59,396 INFO L78 Accepts]: Start accepts. Automaton has 128761 states and 143367 transitions. Word has length 299 [2023-11-29 06:13:59,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:59,396 INFO L495 AbstractCegarLoop]: Abstraction has 128761 states and 143367 transitions. [2023-11-29 06:13:59,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) 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 06:13:59,396 INFO L276 IsEmpty]: Start isEmpty. Operand 128761 states and 143367 transitions. [2023-11-29 06:13:59,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-11-29 06:13:59,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:59,399 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 06:13:59,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:13:59,400 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:59,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:59,400 INFO L85 PathProgramCache]: Analyzing trace with hash -119783286, now seen corresponding path program 1 times [2023-11-29 06:13:59,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:59,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232389845] [2023-11-29 06:13:59,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:59,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:00,293 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-29 06:14:00,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:14:00,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232389845] [2023-11-29 06:14:00,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232389845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:14:00,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:14:00,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:14:00,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765926787] [2023-11-29 06:14:00,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:14:00,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:14:00,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:14:00,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:14:00,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:14:00,296 INFO L87 Difference]: Start difference. First operand 128761 states and 143367 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 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 06:14:05,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:14:05,200 INFO L93 Difference]: Finished difference Result 243357 states and 271905 transitions. [2023-11-29 06:14:05,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:14:05,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 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 308 [2023-11-29 06:14:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:14:05,483 INFO L225 Difference]: With dead ends: 243357 [2023-11-29 06:14:05,483 INFO L226 Difference]: Without dead ends: 127986 [2023-11-29 06:14:05,525 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 06:14:05,526 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 728 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 2689 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:14:05,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1174 Invalid, 2693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2689 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 06:14:05,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127986 states. [2023-11-29 06:14:07,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127986 to 127187. [2023-11-29 06:14:07,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127187 states, 127186 states have (on average 1.1140534335540075) internal successors, (141692), 127186 states have internal predecessors, (141692), 0 states have call successors, (0), 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 06:14:07,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127187 states to 127187 states and 141692 transitions. [2023-11-29 06:14:07,301 INFO L78 Accepts]: Start accepts. Automaton has 127187 states and 141692 transitions. Word has length 308 [2023-11-29 06:14:07,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:14:07,301 INFO L495 AbstractCegarLoop]: Abstraction has 127187 states and 141692 transitions. [2023-11-29 06:14:07,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 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 06:14:07,302 INFO L276 IsEmpty]: Start isEmpty. Operand 127187 states and 141692 transitions. [2023-11-29 06:14:07,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-11-29 06:14:07,305 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:14:07,306 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2023-11-29 06:14:07,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:14:07,306 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:14:07,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:14:07,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1680969746, now seen corresponding path program 1 times [2023-11-29 06:14:07,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:14:07,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072694923] [2023-11-29 06:14:07,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:07,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:14:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 188 proven. 113 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 06:14:08,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:14:08,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072694923] [2023-11-29 06:14:08,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072694923] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:14:08,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21772863] [2023-11-29 06:14:08,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:08,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:14:08,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:14:08,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:14:08,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:14:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:09,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:14:09,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:14:09,219 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-29 06:14:09,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:14:09,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21772863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:14:09,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:14:09,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-29 06:14:09,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590266968] [2023-11-29 06:14:09,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:14:09,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:14:09,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:14:09,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:14:09,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:14:09,223 INFO L87 Difference]: Start difference. First operand 127187 states and 141692 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 06:14:14,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:14:14,232 INFO L93 Difference]: Finished difference Result 253585 states and 282591 transitions. [2023-11-29 06:14:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:14:14,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 337 [2023-11-29 06:14:14,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:14:14,397 INFO L225 Difference]: With dead ends: 253585 [2023-11-29 06:14:14,397 INFO L226 Difference]: Without dead ends: 127186 [2023-11-29 06:14:14,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:14:14,447 INFO L413 NwaCegarLoop]: 1340 mSDtfsCounter, 1113 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:14:14,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 1418 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 06:14:14,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127186 states. [2023-11-29 06:14:15,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127186 to 127184. [2023-11-29 06:14:15,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127184 states, 127183 states have (on average 1.0854516720001888) internal successors, (138051), 127183 states have internal predecessors, (138051), 0 states have call successors, (0), 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 06:14:16,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127184 states to 127184 states and 138051 transitions. [2023-11-29 06:14:16,141 INFO L78 Accepts]: Start accepts. Automaton has 127184 states and 138051 transitions. Word has length 337 [2023-11-29 06:14:16,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:14:16,142 INFO L495 AbstractCegarLoop]: Abstraction has 127184 states and 138051 transitions. [2023-11-29 06:14:16,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 06:14:16,142 INFO L276 IsEmpty]: Start isEmpty. Operand 127184 states and 138051 transitions. [2023-11-29 06:14:16,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2023-11-29 06:14:16,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:14:16,150 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:14:16,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:14:16,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:14:16,350 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:14:16,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:14:16,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1223411125, now seen corresponding path program 1 times [2023-11-29 06:14:16,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:14:16,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918349059] [2023-11-29 06:14:16,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:16,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:14:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-29 06:14:16,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:14:16,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918349059] [2023-11-29 06:14:16,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918349059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:14:16,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:14:16,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:14:16,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347210095] [2023-11-29 06:14:16,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:14:16,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:14:16,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:14:16,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:14:16,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:14:16,927 INFO L87 Difference]: Start difference. First operand 127184 states and 138051 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 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 06:14:22,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:14:22,860 INFO L93 Difference]: Finished difference Result 292944 states and 320173 transitions. [2023-11-29 06:14:22,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:14:22,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 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 06:14:22,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:14:23,046 INFO L225 Difference]: With dead ends: 292944 [2023-11-29 06:14:23,046 INFO L226 Difference]: Without dead ends: 164187 [2023-11-29 06:14:23,072 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 06:14:23,073 INFO L413 NwaCegarLoop]: 1748 mSDtfsCounter, 785 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 714 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 3245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 714 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:14:23,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1891 Invalid, 3245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [714 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-29 06:14:23,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164187 states. [2023-11-29 06:14:24,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164187 to 161022. [2023-11-29 06:14:24,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161022 states, 161021 states have (on average 1.0724315461958378) internal successors, (172684), 161021 states have internal predecessors, (172684), 0 states have call successors, (0), 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 06:14:25,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161022 states to 161022 states and 172684 transitions. [2023-11-29 06:14:25,339 INFO L78 Accepts]: Start accepts. Automaton has 161022 states and 172684 transitions. Word has length 405 [2023-11-29 06:14:25,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:14:25,340 INFO L495 AbstractCegarLoop]: Abstraction has 161022 states and 172684 transitions. [2023-11-29 06:14:25,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 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 06:14:25,341 INFO L276 IsEmpty]: Start isEmpty. Operand 161022 states and 172684 transitions. [2023-11-29 06:14:25,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-11-29 06:14:25,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:14:25,350 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:14:25,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 06:14:25,351 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:14:25,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:14:25,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1345114096, now seen corresponding path program 1 times [2023-11-29 06:14:25,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:14:25,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888661465] [2023-11-29 06:14:25,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:25,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:14:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 260 proven. 110 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 06:14:26,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:14:26,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888661465] [2023-11-29 06:14:26,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888661465] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:14:26,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032266639] [2023-11-29 06:14:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:26,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:14:26,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:14:26,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:14:26,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:14:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:26,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:14:26,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:14:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2023-11-29 06:14:26,733 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:14:26,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032266639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:14:26,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:14:26,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 06:14:26,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042654058] [2023-11-29 06:14:26,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:14:26,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:14:26,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:14:26,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:14:26,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:14:26,735 INFO L87 Difference]: Start difference. First operand 161022 states and 172684 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 06:14:32,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:14:32,579 INFO L93 Difference]: Finished difference Result 354319 states and 382191 transitions. [2023-11-29 06:14:32,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:14:32,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 427 [2023-11-29 06:14:32,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:14:33,001 INFO L225 Difference]: With dead ends: 354319 [2023-11-29 06:14:33,001 INFO L226 Difference]: Without dead ends: 194085 [2023-11-29 06:14:33,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:14:33,063 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 1022 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 3366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:14:33,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 732 Invalid, 3366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-29 06:14:33,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194085 states. [2023-11-29 06:14:35,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194085 to 191703. [2023-11-29 06:14:35,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191703 states, 191702 states have (on average 1.0757634244817478) internal successors, (206226), 191702 states have internal predecessors, (206226), 0 states have call successors, (0), 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 06:14:35,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191703 states to 191703 states and 206226 transitions. [2023-11-29 06:14:35,464 INFO L78 Accepts]: Start accepts. Automaton has 191703 states and 206226 transitions. Word has length 427 [2023-11-29 06:14:35,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:14:35,465 INFO L495 AbstractCegarLoop]: Abstraction has 191703 states and 206226 transitions. [2023-11-29 06:14:35,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 06:14:35,465 INFO L276 IsEmpty]: Start isEmpty. Operand 191703 states and 206226 transitions. [2023-11-29 06:14:35,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-11-29 06:14:35,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:14:35,485 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:14:35,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:14:35,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:14:35,686 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:14:35,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:14:35,687 INFO L85 PathProgramCache]: Analyzing trace with hash -421112706, now seen corresponding path program 1 times [2023-11-29 06:14:35,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:14:35,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057884911] [2023-11-29 06:14:35,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:35,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:14:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:36,335 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 768 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-11-29 06:14:36,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:14:36,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057884911] [2023-11-29 06:14:36,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057884911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:14:36,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:14:36,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:14:36,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202598319] [2023-11-29 06:14:36,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:14:36,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:14:36,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:14:36,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:14:36,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:14:36,338 INFO L87 Difference]: Start difference. First operand 191703 states and 206226 transitions. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 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 06:14:41,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:14:41,972 INFO L93 Difference]: Finished difference Result 384201 states and 413256 transitions. [2023-11-29 06:14:41,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:14:41,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 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 524 [2023-11-29 06:14:41,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:14:42,201 INFO L225 Difference]: With dead ends: 384201 [2023-11-29 06:14:42,201 INFO L226 Difference]: Without dead ends: 193286 [2023-11-29 06:14:42,264 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 06:14:42,265 INFO L413 NwaCegarLoop]: 1395 mSDtfsCounter, 934 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 3067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:14:42,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 1479 Invalid, 3067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 06:14:42,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193286 states. [2023-11-29 06:14:44,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193286 to 191696. [2023-11-29 06:14:44,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191696 states, 191695 states have (on average 1.0583374631576201) internal successors, (202878), 191695 states have internal predecessors, (202878), 0 states have call successors, (0), 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 06:14:45,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191696 states to 191696 states and 202878 transitions. [2023-11-29 06:14:45,047 INFO L78 Accepts]: Start accepts. Automaton has 191696 states and 202878 transitions. Word has length 524 [2023-11-29 06:14:45,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:14:45,047 INFO L495 AbstractCegarLoop]: Abstraction has 191696 states and 202878 transitions. [2023-11-29 06:14:45,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 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 06:14:45,048 INFO L276 IsEmpty]: Start isEmpty. Operand 191696 states and 202878 transitions. [2023-11-29 06:14:45,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2023-11-29 06:14:45,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:14:45,069 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:14:45,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 06:14:45,070 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:14:45,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:14:45,070 INFO L85 PathProgramCache]: Analyzing trace with hash 2058911997, now seen corresponding path program 1 times [2023-11-29 06:14:45,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:14:45,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964725291] [2023-11-29 06:14:45,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:45,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:14:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 460 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2023-11-29 06:14:45,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:14:45,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964725291] [2023-11-29 06:14:45,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964725291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:14:45,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:14:45,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:14:45,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027815977] [2023-11-29 06:14:45,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:14:45,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:14:45,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:14:45,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:14:45,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:14:45,966 INFO L87 Difference]: Start difference. First operand 191696 states and 202878 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 06:14:50,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:14:50,886 INFO L93 Difference]: Finished difference Result 374699 states and 397536 transitions. [2023-11-29 06:14:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:14:50,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 565 [2023-11-29 06:14:50,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:14:51,132 INFO L225 Difference]: With dead ends: 374699 [2023-11-29 06:14:51,132 INFO L226 Difference]: Without dead ends: 201898 [2023-11-29 06:14:51,187 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 06:14:51,187 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1180 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 769 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 3028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 769 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:14:51,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 359 Invalid, 3028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [769 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 06:14:51,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201898 states. [2023-11-29 06:14:53,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201898 to 201898. [2023-11-29 06:14:53,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201898 states, 201897 states have (on average 1.0551370253148882) internal successors, (213029), 201897 states have internal predecessors, (213029), 0 states have call successors, (0), 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 06:14:54,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201898 states to 201898 states and 213029 transitions. [2023-11-29 06:14:54,227 INFO L78 Accepts]: Start accepts. Automaton has 201898 states and 213029 transitions. Word has length 565 [2023-11-29 06:14:54,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:14:54,228 INFO L495 AbstractCegarLoop]: Abstraction has 201898 states and 213029 transitions. [2023-11-29 06:14:54,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 06:14:54,228 INFO L276 IsEmpty]: Start isEmpty. Operand 201898 states and 213029 transitions. [2023-11-29 06:14:54,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2023-11-29 06:14:54,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:14:54,259 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:14:54,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 06:14:54,259 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:14:54,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:14:54,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1525664754, now seen corresponding path program 1 times [2023-11-29 06:14:54,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:14:54,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247557571] [2023-11-29 06:14:54,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:54,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:14:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:55,131 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 526 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-29 06:14:55,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:14:55,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247557571] [2023-11-29 06:14:55,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247557571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:14:55,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:14:55,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:14:55,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94232146] [2023-11-29 06:14:55,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:14:55,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:14:55,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:14:55,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:14:55,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:14:55,135 INFO L87 Difference]: Start difference. First operand 201898 states and 213029 transitions. Second operand has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 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 06:15:05,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:15:05,394 INFO L93 Difference]: Finished difference Result 515755 states and 544894 transitions. [2023-11-29 06:15:05,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:15:05,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 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 06:15:05,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:15:05,817 INFO L225 Difference]: With dead ends: 515755 [2023-11-29 06:15:05,817 INFO L226 Difference]: Without dead ends: 314645 [2023-11-29 06:15:05,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:15:05,915 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 1712 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 6351 mSolverCounterSat, 1106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 7457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1106 IncrementalHoareTripleChecker+Valid, 6351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:15:05,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1712 Valid, 904 Invalid, 7457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1106 Valid, 6351 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-11-29 06:15:06,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314645 states. [2023-11-29 06:15:09,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314645 to 262527. [2023-11-29 06:15:09,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262527 states, 262526 states have (on average 1.0524290927374813) internal successors, (276290), 262526 states have internal predecessors, (276290), 0 states have call successors, (0), 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 06:15:09,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262527 states to 262527 states and 276290 transitions. [2023-11-29 06:15:09,977 INFO L78 Accepts]: Start accepts. Automaton has 262527 states and 276290 transitions. Word has length 615 [2023-11-29 06:15:09,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:15:09,977 INFO L495 AbstractCegarLoop]: Abstraction has 262527 states and 276290 transitions. [2023-11-29 06:15:09,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 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 06:15:09,978 INFO L276 IsEmpty]: Start isEmpty. Operand 262527 states and 276290 transitions. [2023-11-29 06:15:10,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2023-11-29 06:15:10,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:10,007 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:10,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 06:15:10,007 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:10,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:10,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1738550500, now seen corresponding path program 1 times [2023-11-29 06:15:10,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:10,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826535395] [2023-11-29 06:15:10,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:10,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:11,580 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 498 proven. 110 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-11-29 06:15:11,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:11,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826535395] [2023-11-29 06:15:11,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826535395] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:15:11,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360188115] [2023-11-29 06:15:11,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:11,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:15:11,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:15:11,581 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:15:11,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:15:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:11,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:15:11,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:15:11,894 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 495 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-11-29 06:15:11,894 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:15:11,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360188115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:15:11,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:15:11,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 06:15:11,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608726156] [2023-11-29 06:15:11,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:15:11,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:15:11,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:11,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:15:11,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:15:11,897 INFO L87 Difference]: Start difference. First operand 262527 states and 276290 transitions. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 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 06:15:19,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:15:19,093 INFO L93 Difference]: Finished difference Result 548652 states and 577581 transitions. [2023-11-29 06:15:19,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:15:19,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 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 675 [2023-11-29 06:15:19,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:15:19,469 INFO L225 Difference]: With dead ends: 548652 [2023-11-29 06:15:19,470 INFO L226 Difference]: Without dead ends: 302655 [2023-11-29 06:15:19,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:15:19,570 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 920 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:15:19,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 1682 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-29 06:15:19,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302655 states. [2023-11-29 06:15:22,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302655 to 277465. [2023-11-29 06:15:22,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277465 states, 277464 states have (on average 1.0476530288614019) internal successors, (290686), 277464 states have internal predecessors, (290686), 0 states have call successors, (0), 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 06:15:23,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277465 states to 277465 states and 290686 transitions. [2023-11-29 06:15:23,727 INFO L78 Accepts]: Start accepts. Automaton has 277465 states and 290686 transitions. Word has length 675 [2023-11-29 06:15:23,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:15:23,727 INFO L495 AbstractCegarLoop]: Abstraction has 277465 states and 290686 transitions. [2023-11-29 06:15:23,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 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 06:15:23,728 INFO L276 IsEmpty]: Start isEmpty. Operand 277465 states and 290686 transitions. [2023-11-29 06:15:23,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 715 [2023-11-29 06:15:23,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:23,769 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:23,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:15:23,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:15:23,973 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:23,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:23,973 INFO L85 PathProgramCache]: Analyzing trace with hash -55056921, now seen corresponding path program 1 times [2023-11-29 06:15:23,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:23,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111583010] [2023-11-29 06:15:23,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:23,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1227 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2023-11-29 06:15:24,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:24,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111583010] [2023-11-29 06:15:24,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111583010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:15:24,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:15:24,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:15:24,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112788526] [2023-11-29 06:15:24,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:15:24,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:15:24,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:24,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:15:24,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:15:24,345 INFO L87 Difference]: Start difference. First operand 277465 states and 290686 transitions. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 2 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 06:15:28,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:15:28,801 INFO L93 Difference]: Finished difference Result 532869 states and 558718 transitions. [2023-11-29 06:15:28,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:15:28,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 2 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 714 [2023-11-29 06:15:28,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:15:29,500 INFO L225 Difference]: With dead ends: 532869 [2023-11-29 06:15:29,500 INFO L226 Difference]: Without dead ends: 275084 [2023-11-29 06:15:29,595 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 06:15:29,596 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1665 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:15:29,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 272 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 06:15:29,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275084 states. [2023-11-29 06:15:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275084 to 275081. [2023-11-29 06:15:32,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275081 states, 275080 states have (on average 1.047262614512142) internal successors, (288081), 275080 states have internal predecessors, (288081), 0 states have call successors, (0), 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 06:15:33,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275081 states to 275081 states and 288081 transitions. [2023-11-29 06:15:33,392 INFO L78 Accepts]: Start accepts. Automaton has 275081 states and 288081 transitions. Word has length 714 [2023-11-29 06:15:33,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:15:33,393 INFO L495 AbstractCegarLoop]: Abstraction has 275081 states and 288081 transitions. [2023-11-29 06:15:33,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 2 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 06:15:33,393 INFO L276 IsEmpty]: Start isEmpty. Operand 275081 states and 288081 transitions. [2023-11-29 06:15:33,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2023-11-29 06:15:33,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:33,454 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:15:33,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 06:15:33,455 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:33,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:33,456 INFO L85 PathProgramCache]: Analyzing trace with hash 533443551, now seen corresponding path program 1 times [2023-11-29 06:15:33,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:33,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315586944] [2023-11-29 06:15:33,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:33,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 957 backedges. 724 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2023-11-29 06:15:35,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:35,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315586944] [2023-11-29 06:15:35,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315586944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:15:35,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:15:35,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:15:35,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80577300] [2023-11-29 06:15:35,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:15:35,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:15:35,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:35,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:15:35,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:15:35,101 INFO L87 Difference]: Start difference. First operand 275081 states and 288081 transitions. Second operand has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 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 06:15:44,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:15:44,473 INFO L93 Difference]: Finished difference Result 639167 states and 671995 transitions. [2023-11-29 06:15:44,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:15:44,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 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 718 [2023-11-29 06:15:44,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:15:44,981 INFO L225 Difference]: With dead ends: 639167 [2023-11-29 06:15:44,981 INFO L226 Difference]: Without dead ends: 382979 [2023-11-29 06:15:45,057 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 06:15:45,058 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 2130 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 3580 mSolverCounterSat, 1665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 5245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1665 IncrementalHoareTripleChecker+Valid, 3580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:15:45,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 722 Invalid, 5245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1665 Valid, 3580 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-11-29 06:15:45,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382979 states. [2023-11-29 06:15:49,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382979 to 352252. [2023-11-29 06:15:49,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352252 states, 352251 states have (on average 1.0415868230324399) internal successors, (366900), 352251 states have internal predecessors, (366900), 0 states have call successors, (0), 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 06:15:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352252 states to 352252 states and 366900 transitions. [2023-11-29 06:15:50,396 INFO L78 Accepts]: Start accepts. Automaton has 352252 states and 366900 transitions. Word has length 718 [2023-11-29 06:15:50,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:15:50,397 INFO L495 AbstractCegarLoop]: Abstraction has 352252 states and 366900 transitions. [2023-11-29 06:15:50,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 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 06:15:50,397 INFO L276 IsEmpty]: Start isEmpty. Operand 352252 states and 366900 transitions. [2023-11-29 06:15:50,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2023-11-29 06:15:50,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:50,423 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:15:50,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 06:15:50,423 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:50,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1565386671, now seen corresponding path program 1 times [2023-11-29 06:15:50,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:50,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448359846] [2023-11-29 06:15:50,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:50,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 701 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-29 06:15:50,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:50,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448359846] [2023-11-29 06:15:50,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448359846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:15:50,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:15:50,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:15:50,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810255609] [2023-11-29 06:15:50,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:15:50,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:15:50,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:50,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:15:50,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:15:50,827 INFO L87 Difference]: Start difference. First operand 352252 states and 366900 transitions. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 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 06:15:57,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:15:57,092 INFO L93 Difference]: Finished difference Result 681680 states and 710383 transitions. [2023-11-29 06:15:57,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:15:57,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 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 721 [2023-11-29 06:15:57,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:15:57,524 INFO L225 Difference]: With dead ends: 681680 [2023-11-29 06:15:57,524 INFO L226 Difference]: Without dead ends: 330216 [2023-11-29 06:15:57,654 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 06:15:57,655 INFO L413 NwaCegarLoop]: 1638 mSDtfsCounter, 740 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:15:57,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 1761 Invalid, 2823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-29 06:15:58,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330216 states. [2023-11-29 06:16:01,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330216 to 325484. [2023-11-29 06:16:02,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325484 states, 325483 states have (on average 1.0354519283649224) internal successors, (337022), 325483 states have internal predecessors, (337022), 0 states have call successors, (0), 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 06:16:02,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325484 states to 325484 states and 337022 transitions. [2023-11-29 06:16:02,888 INFO L78 Accepts]: Start accepts. Automaton has 325484 states and 337022 transitions. Word has length 721 [2023-11-29 06:16:02,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:02,888 INFO L495 AbstractCegarLoop]: Abstraction has 325484 states and 337022 transitions. [2023-11-29 06:16:02,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 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 06:16:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand 325484 states and 337022 transitions. [2023-11-29 06:16:02,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 927 [2023-11-29 06:16:02,943 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:02,944 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:02,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 06:16:02,945 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:02,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:02,945 INFO L85 PathProgramCache]: Analyzing trace with hash 157476079, now seen corresponding path program 1 times [2023-11-29 06:16:02,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:02,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874916654] [2023-11-29 06:16:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:02,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:04,120 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 549 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2023-11-29 06:16:04,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:04,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874916654] [2023-11-29 06:16:04,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874916654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:04,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:04,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:16:04,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264297834] [2023-11-29 06:16:04,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:04,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:16:04,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:04,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:16:04,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:16:04,124 INFO L87 Difference]: Start difference. First operand 325484 states and 337022 transitions. Second operand has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 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 06:16:11,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:11,363 INFO L93 Difference]: Finished difference Result 673833 states and 698369 transitions. [2023-11-29 06:16:11,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:16:11,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 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 926 [2023-11-29 06:16:11,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:12,148 INFO L225 Difference]: With dead ends: 673833 [2023-11-29 06:16:12,149 INFO L226 Difference]: Without dead ends: 364883 [2023-11-29 06:16:12,295 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 06:16:12,295 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 746 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 902 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 3284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 902 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:12,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 608 Invalid, 3284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [902 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-29 06:16:12,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364883 states. [2023-11-29 06:16:16,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364883 to 343610. [2023-11-29 06:16:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343610 states, 343609 states have (on average 1.0353133940030674) internal successors, (355743), 343609 states have internal predecessors, (355743), 0 states have call successors, (0), 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 06:16:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343610 states to 343610 states and 355743 transitions. [2023-11-29 06:16:17,063 INFO L78 Accepts]: Start accepts. Automaton has 343610 states and 355743 transitions. Word has length 926 [2023-11-29 06:16:17,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:17,063 INFO L495 AbstractCegarLoop]: Abstraction has 343610 states and 355743 transitions. [2023-11-29 06:16:17,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 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 06:16:17,064 INFO L276 IsEmpty]: Start isEmpty. Operand 343610 states and 355743 transitions. [2023-11-29 06:16:17,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1099 [2023-11-29 06:16:17,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:17,153 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:17,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 06:16:17,153 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:17,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:17,154 INFO L85 PathProgramCache]: Analyzing trace with hash -399272988, now seen corresponding path program 1 times [2023-11-29 06:16:17,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:17,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140135305] [2023-11-29 06:16:17,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:17,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 419 proven. 110 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 06:16:20,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:20,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140135305] [2023-11-29 06:16:20,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140135305] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:16:20,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047650964] [2023-11-29 06:16:20,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:20,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:20,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:20,135 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:20,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:16:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:20,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:16:20,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:21,976 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-29 06:16:21,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:16:21,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047650964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:21,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:16:21,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-29 06:16:21,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96756623] [2023-11-29 06:16:21,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:21,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:16:21,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:21,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:16:21,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:16:21,981 INFO L87 Difference]: Start difference. First operand 343610 states and 355743 transitions. Second operand has 3 states, 3 states have (on average 322.0) internal successors, (966), 2 states have internal predecessors, (966), 0 states have call successors, (0), 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 06:16:27,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:27,588 INFO L93 Difference]: Finished difference Result 678580 states and 702787 transitions. [2023-11-29 06:16:27,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:16:27,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 322.0) internal successors, (966), 2 states have internal predecessors, (966), 0 states have call successors, (0), 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 1098 [2023-11-29 06:16:27,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:28,015 INFO L225 Difference]: With dead ends: 678580 [2023-11-29 06:16:28,015 INFO L226 Difference]: Without dead ends: 349138 [2023-11-29 06:16:28,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1102 GetRequests, 1097 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:16:28,499 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 543 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 2408 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:28,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1091 Invalid, 2517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2408 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-29 06:16:28,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349138 states. [2023-11-29 06:16:32,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349138 to 345189. [2023-11-29 06:16:32,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345189 states, 345188 states have (on average 1.031710256439969) internal successors, (356134), 345188 states have internal predecessors, (356134), 0 states have call successors, (0), 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 06:16:33,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345189 states to 345189 states and 356134 transitions. [2023-11-29 06:16:33,157 INFO L78 Accepts]: Start accepts. Automaton has 345189 states and 356134 transitions. Word has length 1098 [2023-11-29 06:16:33,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:33,157 INFO L495 AbstractCegarLoop]: Abstraction has 345189 states and 356134 transitions. [2023-11-29 06:16:33,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.0) internal successors, (966), 2 states have internal predecessors, (966), 0 states have call successors, (0), 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 06:16:33,158 INFO L276 IsEmpty]: Start isEmpty. Operand 345189 states and 356134 transitions. [2023-11-29 06:16:33,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1232 [2023-11-29 06:16:33,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:33,275 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:33,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:16:33,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:33,476 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:33,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:33,477 INFO L85 PathProgramCache]: Analyzing trace with hash -2119282860, now seen corresponding path program 1 times [2023-11-29 06:16:33,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:33,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500289231] [2023-11-29 06:16:33,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:33,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:36,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 837 proven. 75 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-29 06:16:36,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:36,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500289231] [2023-11-29 06:16:36,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500289231] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:16:36,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759171428] [2023-11-29 06:16:36,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:36,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:36,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:36,413 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:36,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b0b1a5-5634-47db-9704-f01dea8d2cb0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:16:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:36,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:16:36,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 975 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-29 06:16:37,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:16:37,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759171428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:37,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:16:37,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-11-29 06:16:37,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672407426] [2023-11-29 06:16:37,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:37,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:16:37,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:37,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:16:37,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:16:37,884 INFO L87 Difference]: Start difference. First operand 345189 states and 356134 transitions. Second operand has 4 states, 4 states have (on average 287.5) internal successors, (1150), 4 states have internal predecessors, (1150), 0 states have call successors, (0), 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 06:16:44,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:44,881 INFO L93 Difference]: Finished difference Result 678570 states and 700281 transitions. [2023-11-29 06:16:44,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:16:44,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 287.5) internal successors, (1150), 4 states have internal predecessors, (1150), 0 states have call successors, (0), 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 1231 [2023-11-29 06:16:44,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:45,326 INFO L225 Difference]: With dead ends: 678570 [2023-11-29 06:16:45,326 INFO L226 Difference]: Without dead ends: 347548 [2023-11-29 06:16:45,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1234 GetRequests, 1231 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:16:45,442 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 1456 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 4376 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 4684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 4376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:45,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1456 Valid, 793 Invalid, 4684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 4376 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-29 06:16:45,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347548 states.