./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem06_label41.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_f85bde63-33e0-45be-b128-94991ed47673/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85bde63-33e0-45be-b128-94991ed47673/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85bde63-33e0-45be-b128-94991ed47673/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85bde63-33e0-45be-b128-94991ed47673/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem06_label41.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85bde63-33e0-45be-b128-94991ed47673/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85bde63-33e0-45be-b128-94991ed47673/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --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 da12d80b1ebe8ddade2fe9b3743ac586f3d124d77af8b69102ae5eb60efc318c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 01:58:59,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:58:59,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:58:59,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:58:59,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:58:59,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:58:59,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:58:59,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:58:59,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:58:59,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:58:59,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:58:59,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:58:59,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:58:59,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:58:59,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:58:59,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:58:59,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:58:59,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:58:59,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:58:59,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:58:59,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:58:59,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:58:59,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:58:59,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:58:59,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:58:59,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:58:59,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:58:59,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:58:59,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:58:59,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:58:59,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:58:59,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:58:59,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:58:59,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:58:59,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:58:59,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:58:59,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:58:59,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:58:59,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:58:59,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:58:59,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:58:59,332 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85bde63-33e0-45be-b128-94991ed47673/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 01:58:59,383 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:58:59,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:58:59,384 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:58:59,385 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:58:59,386 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:58:59,386 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:58:59,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:58:59,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:58:59,388 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:58:59,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:58:59,389 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 01:58:59,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:58:59,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 01:58:59,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:58:59,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 01:58:59,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:58:59,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 01:58:59,392 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 01:58:59,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 01:58:59,392 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:58:59,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 01:58:59,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:58:59,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:58:59,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:58:59,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:58:59,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:58:59,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:58:59,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 01:58:59,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 01:58:59,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 01:58:59,397 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:58:59,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 01:58:59,398 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:58:59,398 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:58:59,398 INFO L138 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_f85bde63-33e0-45be-b128-94991ed47673/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85bde63-33e0-45be-b128-94991ed47673/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da12d80b1ebe8ddade2fe9b3743ac586f3d124d77af8b69102ae5eb60efc318c [2022-11-23 01:58:59,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:58:59,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:58:59,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:58:59,858 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:58:59,858 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:58:59,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85bde63-33e0-45be-b128-94991ed47673/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/eca-rers2012/Problem06_label41.c [2022-11-23 01:59:03,485 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:59:04,461 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:59:04,462 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85bde63-33e0-45be-b128-94991ed47673/sv-benchmarks/c/eca-rers2012/Problem06_label41.c [2022-11-23 01:59:04,536 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85bde63-33e0-45be-b128-94991ed47673/bin/uautomizer-QkZJyEgLgS/data/c1cfff982/61bce2a652d64b0e84de97f2f6907f07/FLAGff84a378a [2022-11-23 01:59:04,559 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85bde63-33e0-45be-b128-94991ed47673/bin/uautomizer-QkZJyEgLgS/data/c1cfff982/61bce2a652d64b0e84de97f2f6907f07 [2022-11-23 01:59:04,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:59:04,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:59:04,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:59:04,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:59:04,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:59:04,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:04" (1/1) ... [2022-11-23 01:59:04,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a3672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:04, skipping insertion in model container [2022-11-23 01:59:04,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:04" (1/1) ... [2022-11-23 01:59:04,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:59:04,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:59:07,632 WARN L237 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_f85bde63-33e0-45be-b128-94991ed47673/sv-benchmarks/c/eca-rers2012/Problem06_label41.c[337301,337314] [2022-11-23 01:59:07,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:59:07,683 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:59:09,049 WARN L237 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_f85bde63-33e0-45be-b128-94991ed47673/sv-benchmarks/c/eca-rers2012/Problem06_label41.c[337301,337314] [2022-11-23 01:59:09,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:59:09,115 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:59:09,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09 WrapperNode [2022-11-23 01:59:09,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:59:09,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:59:09,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:59:09,118 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:59:09,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2022-11-23 01:59:09,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2022-11-23 01:59:09,900 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 10173 [2022-11-23 01:59:09,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:59:09,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:59:09,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:59:09,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:59:09,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2022-11-23 01:59:09,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2022-11-23 01:59:10,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2022-11-23 01:59:10,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2022-11-23 01:59:10,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2022-11-23 01:59:10,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2022-11-23 01:59:10,425 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2022-11-23 01:59:10,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2022-11-23 01:59:10,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:59:10,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:59:10,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:59:10,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:59:10,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (1/1) ... [2022-11-23 01:59:10,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:59:10,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85bde63-33e0-45be-b128-94991ed47673/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:59:10,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85bde63-33e0-45be-b128-94991ed47673/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 01:59:10,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f85bde63-33e0-45be-b128-94991ed47673/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 01:59:10,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 01:59:10,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 01:59:10,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:59:10,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:59:11,013 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:59:11,015 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:59:20,193 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:59:20,221 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:59:20,221 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 01:59:20,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:20 BoogieIcfgContainer [2022-11-23 01:59:20,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:59:20,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 01:59:20,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 01:59:20,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 01:59:20,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:59:04" (1/3) ... [2022-11-23 01:59:20,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2375cd19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:20, skipping insertion in model container [2022-11-23 01:59:20,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:09" (2/3) ... [2022-11-23 01:59:20,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2375cd19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:20, skipping insertion in model container [2022-11-23 01:59:20,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:20" (3/3) ... [2022-11-23 01:59:20,238 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem06_label41.c [2022-11-23 01:59:20,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 01:59:20,264 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 01:59:20,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 01:59:20,376 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=LoopsAndPotentialCycles, 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;@3b6df9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 01:59:20,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 01:59:20,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 1290 states, 1288 states have (on average 1.8571428571428572) internal successors, (2392), 1289 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:20,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2022-11-23 01:59:20,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:59:20,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:59:20,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:59:20,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:20,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1974904671, now seen corresponding path program 1 times [2022-11-23 01:59:20,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:20,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235306896] [2022-11-23 01:59:20,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:20,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:24,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:24,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:24,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235306896] [2022-11-23 01:59:24,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235306896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:59:24,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:59:24,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 01:59:24,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895025878] [2022-11-23 01:59:24,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:59:24,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:59:24,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:24,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:59:24,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:59:24,438 INFO L87 Difference]: Start difference. First operand has 1290 states, 1288 states have (on average 1.8571428571428572) internal successors, (2392), 1289 states have internal predecessors, (2392), 0 states have call successors, (0), 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 3 states, 3 states have (on average 328.6666666666667) internal successors, (986), 2 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:32,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:59:32,149 INFO L93 Difference]: Finished difference Result 3664 states and 6878 transitions. [2022-11-23 01:59:32,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:59:32,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 328.6666666666667) internal successors, (986), 2 states have internal predecessors, (986), 0 states have call successors, (0), 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 986 [2022-11-23 01:59:32,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:59:32,194 INFO L225 Difference]: With dead ends: 3664 [2022-11-23 01:59:32,194 INFO L226 Difference]: Without dead ends: 2310 [2022-11-23 01:59:32,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:59:32,209 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 558 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 2967 mSolverCounterSat, 1120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 4087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1120 IncrementalHoareTripleChecker+Valid, 2967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-23 01:59:32,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 989 Invalid, 4087 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1120 Valid, 2967 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-23 01:59:32,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2022-11-23 01:59:32,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2301. [2022-11-23 01:59:32,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 2300 states have (on average 1.6908695652173913) internal successors, (3889), 2300 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:32,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 3889 transitions. [2022-11-23 01:59:32,388 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 3889 transitions. Word has length 986 [2022-11-23 01:59:32,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:59:32,391 INFO L495 AbstractCegarLoop]: Abstraction has 2301 states and 3889 transitions. [2022-11-23 01:59:32,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.6666666666667) internal successors, (986), 2 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:32,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 3889 transitions. [2022-11-23 01:59:32,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2022-11-23 01:59:32,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:59:32,442 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:59:32,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 01:59:32,443 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:59:32,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:32,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1360763324, now seen corresponding path program 1 times [2022-11-23 01:59:32,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:32,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391859983] [2022-11-23 01:59:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:32,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:35,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:35,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391859983] [2022-11-23 01:59:35,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391859983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:59:35,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:59:35,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 01:59:35,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090355972] [2022-11-23 01:59:35,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:59:35,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:59:35,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:35,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:59:35,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:59:35,130 INFO L87 Difference]: Start difference. First operand 2301 states and 3889 transitions. Second operand has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 2 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:41,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:59:41,401 INFO L93 Difference]: Finished difference Result 5632 states and 9380 transitions. [2022-11-23 01:59:41,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:59:41,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 2 states have internal predecessors, (994), 0 states have call successors, (0), 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 994 [2022-11-23 01:59:41,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:59:41,423 INFO L225 Difference]: With dead ends: 5632 [2022-11-23 01:59:41,424 INFO L226 Difference]: Without dead ends: 3333 [2022-11-23 01:59:41,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:59:41,430 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 1199 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 3007 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 3663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 3007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:59:41,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1199 Valid, 1131 Invalid, 3663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 3007 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-23 01:59:41,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3333 states. [2022-11-23 01:59:41,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3333 to 3324. [2022-11-23 01:59:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3324 states, 3323 states have (on average 1.5865182064399639) internal successors, (5272), 3323 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:41,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 5272 transitions. [2022-11-23 01:59:41,532 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 5272 transitions. Word has length 994 [2022-11-23 01:59:41,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:59:41,533 INFO L495 AbstractCegarLoop]: Abstraction has 3324 states and 5272 transitions. [2022-11-23 01:59:41,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 2 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 5272 transitions. [2022-11-23 01:59:41,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2022-11-23 01:59:41,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:59:41,586 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:59:41,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 01:59:41,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:59:41,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:41,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1364865507, now seen corresponding path program 1 times [2022-11-23 01:59:41,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:41,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828138609] [2022-11-23 01:59:41,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:41,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:43,440 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 01:59:43,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:43,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828138609] [2022-11-23 01:59:43,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828138609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:59:43,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:59:43,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 01:59:43,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622310413] [2022-11-23 01:59:43,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:59:43,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:59:43,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:43,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:59:43,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:59:43,448 INFO L87 Difference]: Start difference. First operand 3324 states and 5272 transitions. Second operand has 3 states, 3 states have (on average 330.3333333333333) internal successors, (991), 2 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:45,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:59:45,879 INFO L93 Difference]: Finished difference Result 9949 states and 15793 transitions. [2022-11-23 01:59:45,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:59:45,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 330.3333333333333) internal successors, (991), 2 states have internal predecessors, (991), 0 states have call successors, (0), 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 998 [2022-11-23 01:59:45,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:59:45,910 INFO L225 Difference]: With dead ends: 9949 [2022-11-23 01:59:45,910 INFO L226 Difference]: Without dead ends: 6627 [2022-11-23 01:59:45,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:59:45,917 INFO L413 NwaCegarLoop]: 1736 mSDtfsCounter, 2096 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 3346 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-23 01:59:45,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2096 Valid, 3346 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-23 01:59:45,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6627 states. [2022-11-23 01:59:46,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6627 to 6623. [2022-11-23 01:59:46,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6623 states, 6622 states have (on average 1.5850196315312595) internal successors, (10496), 6622 states have internal predecessors, (10496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:46,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6623 states to 6623 states and 10496 transitions. [2022-11-23 01:59:46,089 INFO L78 Accepts]: Start accepts. Automaton has 6623 states and 10496 transitions. Word has length 998 [2022-11-23 01:59:46,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:59:46,089 INFO L495 AbstractCegarLoop]: Abstraction has 6623 states and 10496 transitions. [2022-11-23 01:59:46,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 330.3333333333333) internal successors, (991), 2 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:46,091 INFO L276 IsEmpty]: Start isEmpty. Operand 6623 states and 10496 transitions. [2022-11-23 01:59:46,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2022-11-23 01:59:46,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:59:46,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:59:46,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 01:59:46,114 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:59:46,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:46,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1914063315, now seen corresponding path program 1 times [2022-11-23 01:59:46,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:46,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100076245] [2022-11-23 01:59:46,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:46,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:47,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:47,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:47,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100076245] [2022-11-23 01:59:47,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100076245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:59:47,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:59:47,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 01:59:47,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488218699] [2022-11-23 01:59:47,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:59:47,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:59:47,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:47,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:59:47,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:59:47,413 INFO L87 Difference]: Start difference. First operand 6623 states and 10496 transitions. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 2 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:53,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:59:53,932 INFO L93 Difference]: Finished difference Result 19385 states and 30869 transitions. [2022-11-23 01:59:53,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:59:53,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 2 states have internal predecessors, (998), 0 states have call successors, (0), 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 998 [2022-11-23 01:59:53,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:59:53,980 INFO L225 Difference]: With dead ends: 19385 [2022-11-23 01:59:53,980 INFO L226 Difference]: Without dead ends: 12764 [2022-11-23 01:59:53,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:59:53,993 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 1214 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 3325 mSolverCounterSat, 1044 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 4369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1044 IncrementalHoareTripleChecker+Valid, 3325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-23 01:59:53,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 906 Invalid, 4369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1044 Valid, 3325 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-23 01:59:54,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12764 states. [2022-11-23 01:59:54,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12764 to 12634. [2022-11-23 01:59:54,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12634 states, 12633 states have (on average 1.5775350273094277) internal successors, (19929), 12633 states have internal predecessors, (19929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:54,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12634 states to 12634 states and 19929 transitions. [2022-11-23 01:59:54,385 INFO L78 Accepts]: Start accepts. Automaton has 12634 states and 19929 transitions. Word has length 998 [2022-11-23 01:59:54,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:59:54,386 INFO L495 AbstractCegarLoop]: Abstraction has 12634 states and 19929 transitions. [2022-11-23 01:59:54,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 2 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:54,397 INFO L276 IsEmpty]: Start isEmpty. Operand 12634 states and 19929 transitions. [2022-11-23 01:59:54,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1011 [2022-11-23 01:59:54,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:59:54,431 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:59:54,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 01:59:54,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:59:54,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:54,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1631805186, now seen corresponding path program 1 times [2022-11-23 01:59:54,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:54,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553929774] [2022-11-23 01:59:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:54,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:55,746 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 01:59:55,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:55,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553929774] [2022-11-23 01:59:55,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553929774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:59:55,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:59:55,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 01:59:55,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919707441] [2022-11-23 01:59:55,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:59:55,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:59:55,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:55,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:59:55,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:59:55,755 INFO L87 Difference]: Start difference. First operand 12634 states and 19929 transitions. Second operand has 3 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 2 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:01,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:00:01,888 INFO L93 Difference]: Finished difference Result 37352 states and 59064 transitions. [2022-11-23 02:00:01,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:00:01,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 2 states have internal predecessors, (1003), 0 states have call successors, (0), 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 1010 [2022-11-23 02:00:01,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:00:01,947 INFO L225 Difference]: With dead ends: 37352 [2022-11-23 02:00:01,948 INFO L226 Difference]: Without dead ends: 24720 [2022-11-23 02:00:01,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:00:01,966 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 1258 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 3097 mSolverCounterSat, 924 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 4021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 924 IncrementalHoareTripleChecker+Valid, 3097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:00:01,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 1050 Invalid, 4021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [924 Valid, 3097 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-23 02:00:01,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24720 states. [2022-11-23 02:00:02,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24720 to 24654. [2022-11-23 02:00:02,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24654 states, 24653 states have (on average 1.4455441528414392) internal successors, (35637), 24653 states have internal predecessors, (35637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:02,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24654 states to 24654 states and 35637 transitions. [2022-11-23 02:00:02,594 INFO L78 Accepts]: Start accepts. Automaton has 24654 states and 35637 transitions. Word has length 1010 [2022-11-23 02:00:02,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:00:02,602 INFO L495 AbstractCegarLoop]: Abstraction has 24654 states and 35637 transitions. [2022-11-23 02:00:02,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 2 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:02,603 INFO L276 IsEmpty]: Start isEmpty. Operand 24654 states and 35637 transitions. [2022-11-23 02:00:02,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2022-11-23 02:00:02,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:00:02,659 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:00:02,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:00:02,659 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:00:02,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:00:02,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1987207582, now seen corresponding path program 1 times [2022-11-23 02:00:02,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:00:02,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422861096] [2022-11-23 02:00:02,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:00:02,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:00:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:03,603 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:00:03,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:00:03,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422861096] [2022-11-23 02:00:03,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422861096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:00:03,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:00:03,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:00:03,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963620440] [2022-11-23 02:00:03,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:00:03,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:00:03,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:00:03,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:00:03,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:00:03,610 INFO L87 Difference]: Start difference. First operand 24654 states and 35637 transitions. Second operand has 3 states, 3 states have (on average 342.0) internal successors, (1026), 2 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:09,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:00:09,872 INFO L93 Difference]: Finished difference Result 73264 states and 105980 transitions. [2022-11-23 02:00:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:00:09,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 342.0) internal successors, (1026), 2 states have internal predecessors, (1026), 0 states have call successors, (0), 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 1026 [2022-11-23 02:00:09,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:00:10,001 INFO L225 Difference]: With dead ends: 73264 [2022-11-23 02:00:10,002 INFO L226 Difference]: Without dead ends: 48612 [2022-11-23 02:00:10,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:00:10,224 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 1436 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2722 mSolverCounterSat, 1309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 4031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1309 IncrementalHoareTripleChecker+Valid, 2722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:00:10,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 972 Invalid, 4031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1309 Valid, 2722 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-23 02:00:10,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48612 states. [2022-11-23 02:00:10,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48612 to 48578. [2022-11-23 02:00:11,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48578 states, 48577 states have (on average 1.346048541490829) internal successors, (65387), 48577 states have internal predecessors, (65387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:11,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48578 states to 48578 states and 65387 transitions. [2022-11-23 02:00:11,095 INFO L78 Accepts]: Start accepts. Automaton has 48578 states and 65387 transitions. Word has length 1026 [2022-11-23 02:00:11,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:00:11,096 INFO L495 AbstractCegarLoop]: Abstraction has 48578 states and 65387 transitions. [2022-11-23 02:00:11,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.0) internal successors, (1026), 2 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand 48578 states and 65387 transitions. [2022-11-23 02:00:11,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1040 [2022-11-23 02:00:11,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:00:11,188 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:00:11,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:00:11,189 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:00:11,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:00:11,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1777622545, now seen corresponding path program 1 times [2022-11-23 02:00:11,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:00:11,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964602369] [2022-11-23 02:00:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:00:11,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:00:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-23 02:00:13,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:00:13,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964602369] [2022-11-23 02:00:13,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964602369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:00:13,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:00:13,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:00:13,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487561917] [2022-11-23 02:00:13,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:00:13,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:00:13,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:00:13,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:00:13,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:00:13,589 INFO L87 Difference]: Start difference. First operand 48578 states and 65387 transitions. Second operand has 3 states, 3 states have (on average 332.0) internal successors, (996), 2 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:20,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:00:20,507 INFO L93 Difference]: Finished difference Result 129219 states and 171321 transitions. [2022-11-23 02:00:20,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:00:20,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 332.0) internal successors, (996), 2 states have internal predecessors, (996), 0 states have call successors, (0), 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 1039 [2022-11-23 02:00:20,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:00:20,641 INFO L225 Difference]: With dead ends: 129219 [2022-11-23 02:00:20,642 INFO L226 Difference]: Without dead ends: 80643 [2022-11-23 02:00:20,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:00:20,674 INFO L413 NwaCegarLoop]: 1077 mSDtfsCounter, 1323 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 3627 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 3841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 3627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:00:20,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 1294 Invalid, 3841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 3627 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-23 02:00:20,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80643 states. [2022-11-23 02:00:21,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80643 to 80607. [2022-11-23 02:00:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80607 states, 80606 states have (on average 1.3097039922586409) internal successors, (105570), 80606 states have internal predecessors, (105570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:22,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80607 states to 80607 states and 105570 transitions. [2022-11-23 02:00:22,170 INFO L78 Accepts]: Start accepts. Automaton has 80607 states and 105570 transitions. Word has length 1039 [2022-11-23 02:00:22,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:00:22,171 INFO L495 AbstractCegarLoop]: Abstraction has 80607 states and 105570 transitions. [2022-11-23 02:00:22,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.0) internal successors, (996), 2 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:22,171 INFO L276 IsEmpty]: Start isEmpty. Operand 80607 states and 105570 transitions. [2022-11-23 02:00:22,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2022-11-23 02:00:22,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:00:22,602 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:00:22,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:00:22,603 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:00:22,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:00:22,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1797481706, now seen corresponding path program 1 times [2022-11-23 02:00:22,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:00:22,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779537650] [2022-11-23 02:00:22,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:00:22,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:00:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-23 02:00:24,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:00:24,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779537650] [2022-11-23 02:00:24,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779537650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:00:24,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:00:24,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:00:24,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984074725] [2022-11-23 02:00:24,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:00:24,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:00:24,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:00:24,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:00:24,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:00:24,178 INFO L87 Difference]: Start difference. First operand 80607 states and 105570 transitions. Second operand has 4 states, 4 states have (on average 258.25) internal successors, (1033), 3 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:33,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:00:33,739 INFO L93 Difference]: Finished difference Result 225250 states and 291820 transitions. [2022-11-23 02:00:33,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:00:33,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 258.25) internal successors, (1033), 3 states have internal predecessors, (1033), 0 states have call successors, (0), 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 1076 [2022-11-23 02:00:33,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:00:34,071 INFO L225 Difference]: With dead ends: 225250 [2022-11-23 02:00:34,072 INFO L226 Difference]: Without dead ends: 144645 [2022-11-23 02:00:34,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:00:34,156 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 3950 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 4742 mSolverCounterSat, 1017 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3950 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 5759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1017 IncrementalHoareTripleChecker+Valid, 4742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:00:34,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3950 Valid, 1314 Invalid, 5759 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1017 Valid, 4742 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-23 02:00:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144645 states. [2022-11-23 02:00:36,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144645 to 144552. [2022-11-23 02:00:36,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144552 states, 144551 states have (on average 1.2861204695920472) internal successors, (185910), 144551 states have internal predecessors, (185910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:37,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144552 states to 144552 states and 185910 transitions. [2022-11-23 02:00:37,270 INFO L78 Accepts]: Start accepts. Automaton has 144552 states and 185910 transitions. Word has length 1076 [2022-11-23 02:00:37,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:00:37,270 INFO L495 AbstractCegarLoop]: Abstraction has 144552 states and 185910 transitions. [2022-11-23 02:00:37,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.25) internal successors, (1033), 3 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:37,271 INFO L276 IsEmpty]: Start isEmpty. Operand 144552 states and 185910 transitions. [2022-11-23 02:00:37,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1084 [2022-11-23 02:00:37,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:00:37,427 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:00:37,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 02:00:37,428 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:00:37,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:00:37,429 INFO L85 PathProgramCache]: Analyzing trace with hash -68952132, now seen corresponding path program 2 times [2022-11-23 02:00:37,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:00:37,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143641827] [2022-11-23 02:00:37,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:00:37,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:00:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:39,199 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-23 02:00:39,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:00:39,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143641827] [2022-11-23 02:00:39,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143641827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:00:39,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:00:39,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:00:39,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511632719] [2022-11-23 02:00:39,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:00:39,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:00:39,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:00:39,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:00:39,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:00:39,204 INFO L87 Difference]: Start difference. First operand 144552 states and 185910 transitions. Second operand has 3 states, 3 states have (on average 344.0) internal successors, (1032), 2 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:47,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:00:47,562 INFO L93 Difference]: Finished difference Result 360969 states and 458286 transitions. [2022-11-23 02:00:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:00:47,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 344.0) internal successors, (1032), 2 states have internal predecessors, (1032), 0 states have call successors, (0), 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 1083 [2022-11-23 02:00:47,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:00:48,029 INFO L225 Difference]: With dead ends: 360969 [2022-11-23 02:00:48,029 INFO L226 Difference]: Without dead ends: 216419 [2022-11-23 02:00:48,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:00:48,082 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 1307 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 3452 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 3651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 3452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:00:48,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 1134 Invalid, 3651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 3452 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-23 02:00:48,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216419 states. [2022-11-23 02:00:51,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216419 to 216391. [2022-11-23 02:00:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216391 states, 216390 states have (on average 1.2563658209713942) internal successors, (271865), 216390 states have internal predecessors, (271865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:52,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216391 states to 216391 states and 271865 transitions. [2022-11-23 02:00:52,634 INFO L78 Accepts]: Start accepts. Automaton has 216391 states and 271865 transitions. Word has length 1083 [2022-11-23 02:00:52,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:00:52,635 INFO L495 AbstractCegarLoop]: Abstraction has 216391 states and 271865 transitions. [2022-11-23 02:00:52,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 344.0) internal successors, (1032), 2 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:52,635 INFO L276 IsEmpty]: Start isEmpty. Operand 216391 states and 271865 transitions. [2022-11-23 02:00:52,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1088 [2022-11-23 02:00:52,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:00:52,885 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:00:52,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 02:00:52,886 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:00:52,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:00:52,886 INFO L85 PathProgramCache]: Analyzing trace with hash -2056836178, now seen corresponding path program 1 times [2022-11-23 02:00:52,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:00:52,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335503048] [2022-11-23 02:00:52,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:00:52,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:00:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-23 02:00:54,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:00:54,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335503048] [2022-11-23 02:00:54,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335503048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:00:54,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:00:54,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:00:54,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337875556] [2022-11-23 02:00:54,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:00:54,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:00:54,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:00:54,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:00:54,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:00:54,505 INFO L87 Difference]: Start difference. First operand 216391 states and 271865 transitions. Second operand has 3 states, 3 states have (on average 338.0) internal successors, (1014), 2 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:03,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:01:03,273 INFO L93 Difference]: Finished difference Result 576456 states and 716111 transitions. [2022-11-23 02:01:03,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:01:03,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 338.0) internal successors, (1014), 2 states have internal predecessors, (1014), 0 states have call successors, (0), 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 1087 [2022-11-23 02:01:03,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:01:03,951 INFO L225 Difference]: With dead ends: 576456 [2022-11-23 02:01:03,951 INFO L226 Difference]: Without dead ends: 360067 [2022-11-23 02:01:04,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:01:04,087 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 1320 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 3296 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 3647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 3296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:01:04,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 1030 Invalid, 3647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 3296 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-23 02:01:04,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360067 states. [2022-11-23 02:01:09,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360067 to 360043. [2022-11-23 02:01:10,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360043 states, 360042 states have (on average 1.2327645108070726) internal successors, (443847), 360042 states have internal predecessors, (443847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:11,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360043 states to 360043 states and 443847 transitions. [2022-11-23 02:01:11,915 INFO L78 Accepts]: Start accepts. Automaton has 360043 states and 443847 transitions. Word has length 1087 [2022-11-23 02:01:11,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:01:11,915 INFO L495 AbstractCegarLoop]: Abstraction has 360043 states and 443847 transitions. [2022-11-23 02:01:11,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 338.0) internal successors, (1014), 2 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:11,915 INFO L276 IsEmpty]: Start isEmpty. Operand 360043 states and 443847 transitions. [2022-11-23 02:01:12,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1090 [2022-11-23 02:01:12,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:01:12,281 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:01:12,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 02:01:12,282 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:01:12,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:12,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1683812314, now seen corresponding path program 1 times [2022-11-23 02:01:12,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:12,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576892525] [2022-11-23 02:01:12,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:12,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:14,766 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 02:01:14,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:14,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576892525] [2022-11-23 02:01:14,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576892525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:01:14,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:01:14,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:01:14,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331656783] [2022-11-23 02:01:14,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:01:14,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:01:14,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:14,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:01:14,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:01:14,773 INFO L87 Difference]: Start difference. First operand 360043 states and 443847 transitions. Second operand has 3 states, 3 states have (on average 356.6666666666667) internal successors, (1070), 2 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)