./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af431ca8-ac91-4bb6-9bc9-de587676449b/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af431ca8-ac91-4bb6-9bc9-de587676449b/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af431ca8-ac91-4bb6-9bc9-de587676449b/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af431ca8-ac91-4bb6-9bc9-de587676449b/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af431ca8-ac91-4bb6-9bc9-de587676449b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af431ca8-ac91-4bb6-9bc9-de587676449b/bin/uautomizer-verify-uCwYo4JHxu --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 058bf7bb7159fc58d1639895d555a49cdf382897b3dae93686af695cfade8af2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:36:30,155 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:36:30,243 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af431ca8-ac91-4bb6-9bc9-de587676449b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:36:30,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:36:30,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:36:30,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:36:30,275 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:36:30,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:36:30,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:36:30,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:36:30,278 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:36:30,279 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:36:30,279 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:36:30,280 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:36:30,281 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:36:30,281 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:36:30,282 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:36:30,283 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:36:30,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:36:30,284 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:36:30,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:36:30,286 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:36:30,286 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:36:30,287 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:36:30,287 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:36:30,288 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:36:30,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:36:30,289 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:36:30,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:30,290 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:36:30,291 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:36:30,291 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:36:30,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:36:30,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:36:30,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:36:30,293 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:36:30,293 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:36:30,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:36:30,294 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:36:30,294 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_af431ca8-ac91-4bb6-9bc9-de587676449b/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af431ca8-ac91-4bb6-9bc9-de587676449b/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 058bf7bb7159fc58d1639895d555a49cdf382897b3dae93686af695cfade8af2 [2023-11-19 07:36:30,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:36:30,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:36:30,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:36:30,653 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:36:30,654 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:36:30,655 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af431ca8-ac91-4bb6-9bc9-de587676449b/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-11-19 07:36:33,722 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:36:34,375 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:36:34,376 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af431ca8-ac91-4bb6-9bc9-de587676449b/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-11-19 07:36:34,422 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af431ca8-ac91-4bb6-9bc9-de587676449b/bin/uautomizer-verify-uCwYo4JHxu/data/4dc097917/d0cfc7750945410ea24175ebc57a2c23/FLAGa9e463d57 [2023-11-19 07:36:34,442 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af431ca8-ac91-4bb6-9bc9-de587676449b/bin/uautomizer-verify-uCwYo4JHxu/data/4dc097917/d0cfc7750945410ea24175ebc57a2c23 [2023-11-19 07:36:34,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:36:34,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:36:34,455 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:34,455 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:36:34,461 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:36:34,464 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:34" (1/1) ... [2023-11-19 07:36:34,465 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be37c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:34, skipping insertion in model container [2023-11-19 07:36:34,465 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:34" (1/1) ... [2023-11-19 07:36:34,632 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:35,071 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_af431ca8-ac91-4bb6-9bc9-de587676449b/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c[20454,20467] [2023-11-19 07:36:35,212 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_af431ca8-ac91-4bb6-9bc9-de587676449b/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c[27390,27403] [2023-11-19 07:36:36,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:36,309 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:36:36,390 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_af431ca8-ac91-4bb6-9bc9-de587676449b/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c[20454,20467] [2023-11-19 07:36:36,408 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_af431ca8-ac91-4bb6-9bc9-de587676449b/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c[27390,27403] [2023-11-19 07:36:37,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:37,109 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:36:37,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37 WrapperNode [2023-11-19 07:36:37,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:37,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:37,112 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:36:37,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:36:37,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:37,190 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:37,743 INFO L138 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5211 [2023-11-19 07:36:37,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:37,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:36:37,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:36:37,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:36:37,755 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:37,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:37,880 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:37,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:38,142 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:38,179 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:38,240 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:38,261 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:38,368 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:36:38,369 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:36:38,370 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:36:38,370 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:36:38,371 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:38,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:38,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af431ca8-ac91-4bb6-9bc9-de587676449b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:38,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af431ca8-ac91-4bb6-9bc9-de587676449b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:36:38,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af431ca8-ac91-4bb6-9bc9-de587676449b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:36:38,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:36:38,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:36:38,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:36:38,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:36:38,619 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:36:38,621 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:36:44,175 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:36:44,196 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:36:44,196 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:36:44,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:44 BoogieIcfgContainer [2023-11-19 07:36:44,210 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:36:44,212 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:36:44,213 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:36:44,216 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:36:44,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:34" (1/3) ... [2023-11-19 07:36:44,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38117e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:44, skipping insertion in model container [2023-11-19 07:36:44,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (2/3) ... [2023-11-19 07:36:44,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38117e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:44, skipping insertion in model container [2023-11-19 07:36:44,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:44" (3/3) ... [2023-11-19 07:36:44,221 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-11-19 07:36:44,242 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:36:44,242 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:36:44,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:44,333 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;@5eba9be8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:44,333 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 07:36:44,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 932 states, 929 states have (on average 1.9031216361679224) internal successors, (1768), 931 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:44,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:36:44,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:44,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:44,358 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:44,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:44,364 INFO L85 PathProgramCache]: Analyzing trace with hash -28928260, now seen corresponding path program 1 times [2023-11-19 07:36:44,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:44,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955545953] [2023-11-19 07:36:44,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:44,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:44,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:44,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955545953] [2023-11-19 07:36:44,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955545953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:44,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:44,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:44,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845062677] [2023-11-19 07:36:44,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:44,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:36:44,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:44,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:36:44,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:36:44,764 INFO L87 Difference]: Start difference. First operand has 932 states, 929 states have (on average 1.9031216361679224) internal successors, (1768), 931 states have internal predecessors, (1768), 0 states have call successors, (0), 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 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:44,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:44,860 INFO L93 Difference]: Finished difference Result 1806 states and 3426 transitions. [2023-11-19 07:36:44,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:36:44,863 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-11-19 07:36:44,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:44,887 INFO L225 Difference]: With dead ends: 1806 [2023-11-19 07:36:44,888 INFO L226 Difference]: Without dead ends: 866 [2023-11-19 07:36:44,897 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 [2023-11-19 07:36:44,906 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:44,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:44,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2023-11-19 07:36:45,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2023-11-19 07:36:45,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 864 states have (on average 1.8923611111111112) internal successors, (1635), 865 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:45,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1635 transitions. [2023-11-19 07:36:45,027 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1635 transitions. Word has length 28 [2023-11-19 07:36:45,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:45,028 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1635 transitions. [2023-11-19 07:36:45,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:45,028 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1635 transitions. [2023-11-19 07:36:45,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:36:45,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:45,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:45,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:36:45,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:45,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:45,032 INFO L85 PathProgramCache]: Analyzing trace with hash 189926458, now seen corresponding path program 1 times [2023-11-19 07:36:45,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:45,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817119281] [2023-11-19 07:36:45,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:45,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:45,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:45,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:45,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817119281] [2023-11-19 07:36:45,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817119281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:45,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:45,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:36:45,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356586757] [2023-11-19 07:36:45,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:45,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:45,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:45,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:45,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:45,369 INFO L87 Difference]: Start difference. First operand 866 states and 1635 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:45,565 INFO L93 Difference]: Finished difference Result 926 states and 1729 transitions. [2023-11-19 07:36:45,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:45,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-11-19 07:36:45,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:45,573 INFO L225 Difference]: With dead ends: 926 [2023-11-19 07:36:45,574 INFO L226 Difference]: Without dead ends: 866 [2023-11-19 07:36:45,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:45,579 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 2 mSDsluCounter, 4844 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6477 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:45,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6477 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:45,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2023-11-19 07:36:45,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2023-11-19 07:36:45,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 864 states have (on average 1.8344907407407407) internal successors, (1585), 865 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:45,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1585 transitions. [2023-11-19 07:36:45,608 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1585 transitions. Word has length 28 [2023-11-19 07:36:45,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:45,609 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1585 transitions. [2023-11-19 07:36:45,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:45,609 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1585 transitions. [2023-11-19 07:36:45,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-19 07:36:45,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:45,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:45,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:36:45,618 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:45,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:45,619 INFO L85 PathProgramCache]: Analyzing trace with hash -70736731, now seen corresponding path program 1 times [2023-11-19 07:36:45,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:45,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924673747] [2023-11-19 07:36:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:45,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:46,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:46,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:46,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924673747] [2023-11-19 07:36:46,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924673747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:46,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:46,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:46,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064105128] [2023-11-19 07:36:46,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:46,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:46,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:46,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:46,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:46,045 INFO L87 Difference]: Start difference. First operand 866 states and 1585 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:54,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:54,525 INFO L93 Difference]: Finished difference Result 3121 states and 5894 transitions. [2023-11-19 07:36:54,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:54,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2023-11-19 07:36:54,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:54,543 INFO L225 Difference]: With dead ends: 3121 [2023-11-19 07:36:54,543 INFO L226 Difference]: Without dead ends: 2368 [2023-11-19 07:36:54,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:54,547 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 2485 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2485 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:54,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2485 Valid, 839 Invalid, 6507 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-11-19 07:36:54,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2023-11-19 07:36:54,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 2368. [2023-11-19 07:36:54,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2368 states, 2366 states have (on average 1.5633981403212172) internal successors, (3699), 2367 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:54,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 3699 transitions. [2023-11-19 07:36:54,623 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 3699 transitions. Word has length 60 [2023-11-19 07:36:54,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:54,624 INFO L495 AbstractCegarLoop]: Abstraction has 2368 states and 3699 transitions. [2023-11-19 07:36:54,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:54,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 3699 transitions. [2023-11-19 07:36:54,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 07:36:54,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:54,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:54,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:36:54,627 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:54,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:54,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1109970983, now seen corresponding path program 1 times [2023-11-19 07:36:54,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:54,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719168798] [2023-11-19 07:36:54,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:54,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:54,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:54,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:54,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719168798] [2023-11-19 07:36:54,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719168798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:54,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:54,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:36:54,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465971617] [2023-11-19 07:36:54,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:54,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:36:54,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:54,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:36:54,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:36:54,930 INFO L87 Difference]: Start difference. First operand 2368 states and 3699 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:55,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:55,413 INFO L93 Difference]: Finished difference Result 3152 states and 4959 transitions. [2023-11-19 07:36:55,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:36:55,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-11-19 07:36:55,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:55,437 INFO L225 Difference]: With dead ends: 3152 [2023-11-19 07:36:55,438 INFO L226 Difference]: Without dead ends: 3096 [2023-11-19 07:36:55,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:36:55,452 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 11614 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11614 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:55,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11614 Valid, 4325 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:36:55,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3096 states. [2023-11-19 07:36:55,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3096 to 2422. [2023-11-19 07:36:55,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2420 states have (on average 1.5644628099173554) internal successors, (3786), 2421 states have internal predecessors, (3786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:55,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 3786 transitions. [2023-11-19 07:36:55,532 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 3786 transitions. Word has length 77 [2023-11-19 07:36:55,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:55,534 INFO L495 AbstractCegarLoop]: Abstraction has 2422 states and 3786 transitions. [2023-11-19 07:36:55,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:55,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 3786 transitions. [2023-11-19 07:36:55,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 07:36:55,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:55,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:55,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:36:55,538 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:55,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:55,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1349050793, now seen corresponding path program 1 times [2023-11-19 07:36:55,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:55,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108403819] [2023-11-19 07:36:55,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:55,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:55,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:55,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:55,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108403819] [2023-11-19 07:36:55,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108403819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:55,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:55,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:55,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662593915] [2023-11-19 07:36:55,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:55,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:55,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:55,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:55,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:55,719 INFO L87 Difference]: Start difference. First operand 2422 states and 3786 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:55,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:55,782 INFO L93 Difference]: Finished difference Result 2631 states and 4121 transitions. [2023-11-19 07:36:55,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:55,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-11-19 07:36:55,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:55,799 INFO L225 Difference]: With dead ends: 2631 [2023-11-19 07:36:55,800 INFO L226 Difference]: Without dead ends: 2521 [2023-11-19 07:36:55,801 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 [2023-11-19 07:36:55,805 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 1500 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:55,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1664 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:55,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2023-11-19 07:36:55,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 2517. [2023-11-19 07:36:55,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2515 states have (on average 1.5650099403578528) internal successors, (3936), 2516 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 3936 transitions. [2023-11-19 07:36:55,888 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 3936 transitions. Word has length 79 [2023-11-19 07:36:55,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:55,889 INFO L495 AbstractCegarLoop]: Abstraction has 2517 states and 3936 transitions. [2023-11-19 07:36:55,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:55,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 3936 transitions. [2023-11-19 07:36:55,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 07:36:55,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:55,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:55,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:36:55,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:55,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:55,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1415544305, now seen corresponding path program 1 times [2023-11-19 07:36:55,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:55,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561044625] [2023-11-19 07:36:55,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:55,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:56,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:56,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:56,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561044625] [2023-11-19 07:36:56,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561044625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:56,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:56,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:36:56,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637162064] [2023-11-19 07:36:56,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:56,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:36:56,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:56,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:36:56,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:36:56,452 INFO L87 Difference]: Start difference. First operand 2517 states and 3936 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:56,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:56,915 INFO L93 Difference]: Finished difference Result 2724 states and 4264 transitions. [2023-11-19 07:36:56,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:36:56,916 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-11-19 07:36:56,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:56,934 INFO L225 Difference]: With dead ends: 2724 [2023-11-19 07:36:56,935 INFO L226 Difference]: Without dead ends: 2519 [2023-11-19 07:36:56,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:36:56,940 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 9072 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9072 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:56,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9072 Valid, 2099 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:56,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2023-11-19 07:36:57,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2517. [2023-11-19 07:36:57,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2515 states have (on average 1.5642147117296223) internal successors, (3934), 2516 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:57,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 3934 transitions. [2023-11-19 07:36:57,026 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 3934 transitions. Word has length 79 [2023-11-19 07:36:57,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:57,028 INFO L495 AbstractCegarLoop]: Abstraction has 2517 states and 3934 transitions. [2023-11-19 07:36:57,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:57,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 3934 transitions. [2023-11-19 07:36:57,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:36:57,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:57,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:57,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:36:57,037 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:57,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:57,038 INFO L85 PathProgramCache]: Analyzing trace with hash 517477589, now seen corresponding path program 1 times [2023-11-19 07:36:57,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:57,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529097591] [2023-11-19 07:36:57,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:57,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:57,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:57,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529097591] [2023-11-19 07:36:57,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529097591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:57,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:57,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:36:57,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292003567] [2023-11-19 07:36:57,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:57,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:36:57,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:57,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:36:57,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:36:57,575 INFO L87 Difference]: Start difference. First operand 2517 states and 3934 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:57,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:57,751 INFO L93 Difference]: Finished difference Result 2689 states and 4210 transitions. [2023-11-19 07:36:57,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:36:57,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-11-19 07:36:57,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:57,768 INFO L225 Difference]: With dead ends: 2689 [2023-11-19 07:36:57,768 INFO L226 Difference]: Without dead ends: 2687 [2023-11-19 07:36:57,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:36:57,771 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 177 mSDsluCounter, 9669 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 11322 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:57,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 11322 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:57,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2023-11-19 07:36:57,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 2523. [2023-11-19 07:36:57,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2521 states have (on average 1.562475208250694) internal successors, (3939), 2522 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:57,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 3939 transitions. [2023-11-19 07:36:57,852 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 3939 transitions. Word has length 80 [2023-11-19 07:36:57,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:57,853 INFO L495 AbstractCegarLoop]: Abstraction has 2523 states and 3939 transitions. [2023-11-19 07:36:57,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:57,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 3939 transitions. [2023-11-19 07:36:57,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:36:57,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:57,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:57,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:36:57,856 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:57,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:57,857 INFO L85 PathProgramCache]: Analyzing trace with hash -927531695, now seen corresponding path program 1 times [2023-11-19 07:36:57,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:57,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116336827] [2023-11-19 07:36:57,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:57,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:57,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:57,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116336827] [2023-11-19 07:36:57,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116336827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:57,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:57,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:57,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579334811] [2023-11-19 07:36:57,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:57,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:57,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:57,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:57,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:57,945 INFO L87 Difference]: Start difference. First operand 2523 states and 3939 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:57,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:57,998 INFO L93 Difference]: Finished difference Result 2929 states and 4571 transitions. [2023-11-19 07:36:57,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:57,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-11-19 07:36:57,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:58,016 INFO L225 Difference]: With dead ends: 2929 [2023-11-19 07:36:58,016 INFO L226 Difference]: Without dead ends: 2718 [2023-11-19 07:36:58,018 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 [2023-11-19 07:36:58,020 INFO L413 NwaCegarLoop]: 1652 mSDtfsCounter, 1517 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:58,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 1747 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:58,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2718 states. [2023-11-19 07:36:58,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2718 to 2716. [2023-11-19 07:36:58,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2714 states have (on average 1.5607958732498157) internal successors, (4236), 2715 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:58,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 4236 transitions. [2023-11-19 07:36:58,116 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 4236 transitions. Word has length 81 [2023-11-19 07:36:58,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:58,116 INFO L495 AbstractCegarLoop]: Abstraction has 2716 states and 4236 transitions. [2023-11-19 07:36:58,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:58,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 4236 transitions. [2023-11-19 07:36:58,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:36:58,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:58,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:58,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:36:58,119 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:58,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:58,120 INFO L85 PathProgramCache]: Analyzing trace with hash -764617135, now seen corresponding path program 1 times [2023-11-19 07:36:58,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:58,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077245762] [2023-11-19 07:36:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:58,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:58,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:58,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077245762] [2023-11-19 07:36:58,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077245762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:58,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:58,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:58,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400774607] [2023-11-19 07:36:58,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:58,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:58,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:58,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:58,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:58,216 INFO L87 Difference]: Start difference. First operand 2716 states and 4236 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:58,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:58,281 INFO L93 Difference]: Finished difference Result 3492 states and 5434 transitions. [2023-11-19 07:36:58,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:58,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-11-19 07:36:58,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:58,305 INFO L225 Difference]: With dead ends: 3492 [2023-11-19 07:36:58,306 INFO L226 Difference]: Without dead ends: 3088 [2023-11-19 07:36:58,308 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 [2023-11-19 07:36:58,310 INFO L413 NwaCegarLoop]: 1650 mSDtfsCounter, 1515 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:58,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1749 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:58,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3088 states. [2023-11-19 07:36:58,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3088 to 3086. [2023-11-19 07:36:58,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3086 states, 3084 states have (on average 1.5557717250324254) internal successors, (4798), 3085 states have internal predecessors, (4798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:58,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 4798 transitions. [2023-11-19 07:36:58,428 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 4798 transitions. Word has length 81 [2023-11-19 07:36:58,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:58,428 INFO L495 AbstractCegarLoop]: Abstraction has 3086 states and 4798 transitions. [2023-11-19 07:36:58,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:58,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 4798 transitions. [2023-11-19 07:36:58,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:36:58,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:58,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:58,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:36:58,431 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:58,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:58,432 INFO L85 PathProgramCache]: Analyzing trace with hash 737501265, now seen corresponding path program 1 times [2023-11-19 07:36:58,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:58,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080776939] [2023-11-19 07:36:58,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:58,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:58,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:58,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:58,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080776939] [2023-11-19 07:36:58,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080776939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:58,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:58,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:58,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036589099] [2023-11-19 07:36:58,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:58,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:58,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:58,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:58,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:58,555 INFO L87 Difference]: Start difference. First operand 3086 states and 4798 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:58,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:58,650 INFO L93 Difference]: Finished difference Result 4570 states and 7064 transitions. [2023-11-19 07:36:58,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:58,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-11-19 07:36:58,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:58,696 INFO L225 Difference]: With dead ends: 4570 [2023-11-19 07:36:58,696 INFO L226 Difference]: Without dead ends: 3796 [2023-11-19 07:36:58,699 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 [2023-11-19 07:36:58,700 INFO L413 NwaCegarLoop]: 1638 mSDtfsCounter, 1511 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:58,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1745 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:58,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3796 states. [2023-11-19 07:36:58,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3796 to 3794. [2023-11-19 07:36:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3794 states, 3792 states have (on average 1.544831223628692) internal successors, (5858), 3793 states have internal predecessors, (5858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:58,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3794 states to 3794 states and 5858 transitions. [2023-11-19 07:36:58,863 INFO L78 Accepts]: Start accepts. Automaton has 3794 states and 5858 transitions. Word has length 81 [2023-11-19 07:36:58,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:58,863 INFO L495 AbstractCegarLoop]: Abstraction has 3794 states and 5858 transitions. [2023-11-19 07:36:58,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:58,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3794 states and 5858 transitions. [2023-11-19 07:36:58,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:36:58,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:58,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:58,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:36:58,866 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:58,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:58,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1477967535, now seen corresponding path program 1 times [2023-11-19 07:36:58,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:58,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015209637] [2023-11-19 07:36:58,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:58,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:59,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:59,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015209637] [2023-11-19 07:36:59,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015209637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:59,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:59,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:59,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843671350] [2023-11-19 07:36:59,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:59,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:59,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:59,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:59,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:59,008 INFO L87 Difference]: Start difference. First operand 3794 states and 5858 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:59,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:59,181 INFO L93 Difference]: Finished difference Result 6630 states and 10132 transitions. [2023-11-19 07:36:59,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:59,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-11-19 07:36:59,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:59,196 INFO L225 Difference]: With dead ends: 6630 [2023-11-19 07:36:59,197 INFO L226 Difference]: Without dead ends: 5148 [2023-11-19 07:36:59,201 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 [2023-11-19 07:36:59,201 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 1509 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:59,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1747 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:59,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5148 states. [2023-11-19 07:36:59,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5148 to 5146. [2023-11-19 07:36:59,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5146 states, 5144 states have (on average 1.526049766718507) internal successors, (7850), 5145 states have internal predecessors, (7850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5146 states to 5146 states and 7850 transitions. [2023-11-19 07:36:59,449 INFO L78 Accepts]: Start accepts. Automaton has 5146 states and 7850 transitions. Word has length 81 [2023-11-19 07:36:59,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:59,450 INFO L495 AbstractCegarLoop]: Abstraction has 5146 states and 7850 transitions. [2023-11-19 07:36:59,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:59,450 INFO L276 IsEmpty]: Start isEmpty. Operand 5146 states and 7850 transitions. [2023-11-19 07:36:59,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:36:59,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:59,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:59,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:36:59,453 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:59,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:59,453 INFO L85 PathProgramCache]: Analyzing trace with hash 302965329, now seen corresponding path program 1 times [2023-11-19 07:36:59,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:59,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850914839] [2023-11-19 07:36:59,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:59,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:59,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:59,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850914839] [2023-11-19 07:36:59,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850914839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:59,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:59,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:59,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987633237] [2023-11-19 07:36:59,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:59,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:59,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:59,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:59,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:59,547 INFO L87 Difference]: Start difference. First operand 5146 states and 7850 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:59,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:59,805 INFO L93 Difference]: Finished difference Result 10558 states and 15884 transitions. [2023-11-19 07:36:59,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:59,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-11-19 07:36:59,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:59,824 INFO L225 Difference]: With dead ends: 10558 [2023-11-19 07:36:59,824 INFO L226 Difference]: Without dead ends: 7724 [2023-11-19 07:36:59,830 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 [2023-11-19 07:36:59,831 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 1507 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:59,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1749 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:59,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7724 states. [2023-11-19 07:37:00,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7724 to 7722. [2023-11-19 07:37:00,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7722 states, 7720 states have (on average 1.499740932642487) internal successors, (11578), 7721 states have internal predecessors, (11578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:00,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7722 states to 7722 states and 11578 transitions. [2023-11-19 07:37:00,157 INFO L78 Accepts]: Start accepts. Automaton has 7722 states and 11578 transitions. Word has length 81 [2023-11-19 07:37:00,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:00,158 INFO L495 AbstractCegarLoop]: Abstraction has 7722 states and 11578 transitions. [2023-11-19 07:37:00,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:00,158 INFO L276 IsEmpty]: Start isEmpty. Operand 7722 states and 11578 transitions. [2023-11-19 07:37:00,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:37:00,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:00,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:00,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:37:00,160 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:00,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:00,161 INFO L85 PathProgramCache]: Analyzing trace with hash -500760751, now seen corresponding path program 1 times [2023-11-19 07:37:00,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:00,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302516621] [2023-11-19 07:37:00,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:00,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:00,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:00,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302516621] [2023-11-19 07:37:00,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302516621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:00,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:00,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:00,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394596935] [2023-11-19 07:37:00,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:00,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:00,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:00,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:00,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:00,234 INFO L87 Difference]: Start difference. First operand 7722 states and 11578 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:00,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:00,675 INFO L93 Difference]: Finished difference Result 18030 states and 26620 transitions. [2023-11-19 07:37:00,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:00,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-11-19 07:37:00,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:00,703 INFO L225 Difference]: With dead ends: 18030 [2023-11-19 07:37:00,704 INFO L226 Difference]: Without dead ends: 12620 [2023-11-19 07:37:00,711 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 [2023-11-19 07:37:00,713 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1513 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:00,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1751 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:37:00,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12620 states. [2023-11-19 07:37:01,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12620 to 12618. [2023-11-19 07:37:01,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12618 states, 12616 states have (on average 1.4681357006975269) internal successors, (18522), 12617 states have internal predecessors, (18522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:01,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12618 states to 12618 states and 18522 transitions. [2023-11-19 07:37:01,247 INFO L78 Accepts]: Start accepts. Automaton has 12618 states and 18522 transitions. Word has length 81 [2023-11-19 07:37:01,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:01,248 INFO L495 AbstractCegarLoop]: Abstraction has 12618 states and 18522 transitions. [2023-11-19 07:37:01,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:01,248 INFO L276 IsEmpty]: Start isEmpty. Operand 12618 states and 18522 transitions. [2023-11-19 07:37:01,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-19 07:37:01,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:01,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:01,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:37:01,250 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:01,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:01,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1125158260, now seen corresponding path program 1 times [2023-11-19 07:37:01,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:01,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471088052] [2023-11-19 07:37:01,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:01,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:01,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:01,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471088052] [2023-11-19 07:37:01,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471088052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:01,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:01,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:01,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739718020] [2023-11-19 07:37:01,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:01,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:01,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:01,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:01,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:01,329 INFO L87 Difference]: Start difference. First operand 12618 states and 18522 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:02,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:02,015 INFO L93 Difference]: Finished difference Result 23377 states and 34272 transitions. [2023-11-19 07:37:02,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:02,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-11-19 07:37:02,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:02,058 INFO L225 Difference]: With dead ends: 23377 [2023-11-19 07:37:02,058 INFO L226 Difference]: Without dead ends: 17614 [2023-11-19 07:37:02,067 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 [2023-11-19 07:37:02,068 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 1516 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:02,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1748 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:37:02,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17614 states. [2023-11-19 07:37:02,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17614 to 17612. [2023-11-19 07:37:02,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17612 states, 17610 states have (on average 1.4553094832481546) internal successors, (25628), 17611 states have internal predecessors, (25628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:02,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17612 states to 17612 states and 25628 transitions. [2023-11-19 07:37:02,858 INFO L78 Accepts]: Start accepts. Automaton has 17612 states and 25628 transitions. Word has length 83 [2023-11-19 07:37:02,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:02,858 INFO L495 AbstractCegarLoop]: Abstraction has 17612 states and 25628 transitions. [2023-11-19 07:37:02,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:02,858 INFO L276 IsEmpty]: Start isEmpty. Operand 17612 states and 25628 transitions. [2023-11-19 07:37:02,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 07:37:02,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:02,864 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 07:37:02,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:37:02,865 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:02,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:02,865 INFO L85 PathProgramCache]: Analyzing trace with hash -293163275, now seen corresponding path program 1 times [2023-11-19 07:37:02,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:02,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892758185] [2023-11-19 07:37:02,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:02,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:37:03,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:03,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892758185] [2023-11-19 07:37:03,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892758185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:03,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:03,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:37:03,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234898054] [2023-11-19 07:37:03,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:03,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:37:03,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:03,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:37:03,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:37:03,167 INFO L87 Difference]: Start difference. First operand 17612 states and 25628 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:07,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:07,035 INFO L93 Difference]: Finished difference Result 127836 states and 184100 transitions. [2023-11-19 07:37:07,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:37:07,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 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 104 [2023-11-19 07:37:07,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:07,317 INFO L225 Difference]: With dead ends: 127836 [2023-11-19 07:37:07,317 INFO L226 Difference]: Without dead ends: 112538 [2023-11-19 07:37:07,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:37:07,358 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 9907 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9907 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:07,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9907 Valid, 4412 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:37:07,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112538 states. [2023-11-19 07:37:09,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112538 to 32908. [2023-11-19 07:37:09,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32908 states, 32906 states have (on average 1.4420470430924452) internal successors, (47452), 32907 states have internal predecessors, (47452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:09,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32908 states to 32908 states and 47452 transitions. [2023-11-19 07:37:09,884 INFO L78 Accepts]: Start accepts. Automaton has 32908 states and 47452 transitions. Word has length 104 [2023-11-19 07:37:09,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:09,884 INFO L495 AbstractCegarLoop]: Abstraction has 32908 states and 47452 transitions. [2023-11-19 07:37:09,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:09,885 INFO L276 IsEmpty]: Start isEmpty. Operand 32908 states and 47452 transitions. [2023-11-19 07:37:09,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 07:37:09,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:09,892 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 07:37:09,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:37:09,892 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:09,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:09,893 INFO L85 PathProgramCache]: Analyzing trace with hash -130248715, now seen corresponding path program 1 times [2023-11-19 07:37:09,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:09,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043528416] [2023-11-19 07:37:09,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:09,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:37:10,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:10,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043528416] [2023-11-19 07:37:10,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043528416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:10,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:10,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:37:10,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301662235] [2023-11-19 07:37:10,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:10,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:37:10,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:10,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:37:10,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:37:10,416 INFO L87 Difference]: Start difference. First operand 32908 states and 47452 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:14,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:14,675 INFO L93 Difference]: Finished difference Result 143132 states and 205924 transitions. [2023-11-19 07:37:14,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:37:14,676 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 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 104 [2023-11-19 07:37:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:15,068 INFO L225 Difference]: With dead ends: 143132 [2023-11-19 07:37:15,068 INFO L226 Difference]: Without dead ends: 127834 [2023-11-19 07:37:15,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:37:15,126 INFO L413 NwaCegarLoop]: 1672 mSDtfsCounter, 9949 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9949 SdHoareTripleChecker+Valid, 4305 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:15,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9949 Valid, 4305 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:37:15,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127834 states.