./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_5a9be308-979d-4604-8684-a58c921e7c0b/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9be308-979d-4604-8684-a58c921e7c0b/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9be308-979d-4604-8684-a58c921e7c0b/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9be308-979d-4604-8684-a58c921e7c0b/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9be308-979d-4604-8684-a58c921e7c0b/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9be308-979d-4604-8684-a58c921e7c0b/bin/uautomizer-ZsLfNo2U6R --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 5a61d3db55f61e1c69c316c83f1e37b4c9c56a755bd5e8fcd2da0d467aefc9f7 --- 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-38b53e6 [2022-11-25 17:45:18,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:45:18,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:45:18,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:45:18,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:45:18,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:45:18,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:45:18,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:45:18,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:45:18,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:45:18,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:45:18,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:45:18,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:45:18,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:45:18,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:45:18,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:45:18,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:45:18,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:45:18,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:45:18,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:45:18,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:45:18,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:45:18,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:45:18,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:45:18,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:45:18,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:45:18,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:45:18,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:45:18,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:45:18,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:45:18,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:45:18,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:45:18,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:45:18,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:45:18,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:45:18,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:45:18,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:45:18,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:45:18,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:45:18,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:45:18,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:45:18,448 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9be308-979d-4604-8684-a58c921e7c0b/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:45:18,499 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:45:18,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:45:18,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:45:18,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:45:18,502 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:45:18,502 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:45:18,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:45:18,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:45:18,504 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:45:18,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:45:18,505 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:45:18,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:45:18,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:45:18,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:45:18,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:45:18,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:45:18,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:45:18,508 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:45:18,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:45:18,508 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:45:18,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:45:18,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:45:18,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:45:18,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:45:18,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:45:18,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:45:18,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:45:18,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:45:18,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:45:18,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:45:18,512 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:45:18,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:45:18,512 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:45:18,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:45:18,513 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_5a9be308-979d-4604-8684-a58c921e7c0b/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9be308-979d-4604-8684-a58c921e7c0b/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a61d3db55f61e1c69c316c83f1e37b4c9c56a755bd5e8fcd2da0d467aefc9f7 [2022-11-25 17:45:18,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:45:18,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:45:18,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:45:18,938 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:45:18,939 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:45:18,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9be308-979d-4604-8684-a58c921e7c0b/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c [2022-11-25 17:45:22,404 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:45:22,805 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:45:22,806 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9be308-979d-4604-8684-a58c921e7c0b/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c [2022-11-25 17:45:22,822 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9be308-979d-4604-8684-a58c921e7c0b/bin/uautomizer-ZsLfNo2U6R/data/24369bc31/01a9db301aca41e2aaa6f0fe8ce0dd85/FLAG9d8367748 [2022-11-25 17:45:22,851 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9be308-979d-4604-8684-a58c921e7c0b/bin/uautomizer-ZsLfNo2U6R/data/24369bc31/01a9db301aca41e2aaa6f0fe8ce0dd85 [2022-11-25 17:45:22,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:45:22,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:45:22,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:45:22,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:45:22,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:45:22,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:45:22" (1/1) ... [2022-11-25 17:45:22,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28986e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:22, skipping insertion in model container [2022-11-25 17:45:22,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:45:22" (1/1) ... [2022-11-25 17:45:22,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:45:22,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:45:23,175 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_5a9be308-979d-4604-8684-a58c921e7c0b/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c[14373,14386] [2022-11-25 17:45:23,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:45:23,202 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:45:23,309 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_5a9be308-979d-4604-8684-a58c921e7c0b/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c[14373,14386] [2022-11-25 17:45:23,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:45:23,329 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:45:23,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:23 WrapperNode [2022-11-25 17:45:23,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:45:23,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:45:23,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:45:23,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:45:23,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:23" (1/1) ... [2022-11-25 17:45:23,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:23" (1/1) ... [2022-11-25 17:45:23,405 INFO L138 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 455 [2022-11-25 17:45:23,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:45:23,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:45:23,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:45:23,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:45:23,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:23" (1/1) ... [2022-11-25 17:45:23,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:23" (1/1) ... [2022-11-25 17:45:23,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:23" (1/1) ... [2022-11-25 17:45:23,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:23" (1/1) ... [2022-11-25 17:45:23,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:23" (1/1) ... [2022-11-25 17:45:23,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:23" (1/1) ... [2022-11-25 17:45:23,489 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:23" (1/1) ... [2022-11-25 17:45:23,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:23" (1/1) ... [2022-11-25 17:45:23,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:45:23,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:45:23,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:45:23,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:45:23,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:23" (1/1) ... [2022-11-25 17:45:23,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:45:23,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9be308-979d-4604-8684-a58c921e7c0b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:23,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9be308-979d-4604-8684-a58c921e7c0b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:45:23,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a9be308-979d-4604-8684-a58c921e7c0b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:45:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:45:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:45:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:45:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:45:23,790 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:45:23,795 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:45:24,667 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:45:24,677 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:45:24,684 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:45:24,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:45:24 BoogieIcfgContainer [2022-11-25 17:45:24,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:45:24,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:45:24,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:45:24,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:45:24,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:45:22" (1/3) ... [2022-11-25 17:45:24,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@465c270a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:45:24, skipping insertion in model container [2022-11-25 17:45:24,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:23" (2/3) ... [2022-11-25 17:45:24,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@465c270a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:45:24, skipping insertion in model container [2022-11-25 17:45:24,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:45:24" (3/3) ... [2022-11-25 17:45:24,701 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c [2022-11-25 17:45:24,743 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:45:24,743 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:45:24,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:45:24,849 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;@4328a42c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:45:24,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:45:24,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.7829457364341086) internal successors, (230), 130 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:24,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-25 17:45:24,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:24,874 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] [2022-11-25 17:45:24,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:24,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:24,884 INFO L85 PathProgramCache]: Analyzing trace with hash -210556357, now seen corresponding path program 1 times [2022-11-25 17:45:24,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:24,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625980646] [2022-11-25 17:45:24,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:24,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:25,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:25,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625980646] [2022-11-25 17:45:25,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625980646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:25,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:25,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:45:25,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732757628] [2022-11-25 17:45:25,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:25,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:45:25,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:25,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:45:25,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:45:25,354 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.7829457364341086) internal successors, (230), 130 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:25,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:25,402 INFO L93 Difference]: Finished difference Result 203 states and 352 transitions. [2022-11-25 17:45:25,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:45:25,407 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-11-25 17:45:25,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:25,424 INFO L225 Difference]: With dead ends: 203 [2022-11-25 17:45:25,427 INFO L226 Difference]: Without dead ends: 127 [2022-11-25 17:45:25,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:45:25,451 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:25,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:45:25,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-25 17:45:25,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-11-25 17:45:25,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.7698412698412698) internal successors, (223), 126 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:25,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 223 transitions. [2022-11-25 17:45:25,515 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 223 transitions. Word has length 37 [2022-11-25 17:45:25,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:25,522 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 223 transitions. [2022-11-25 17:45:25,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:25,524 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 223 transitions. [2022-11-25 17:45:25,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-25 17:45:25,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:25,529 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] [2022-11-25 17:45:25,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:45:25,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:25,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:25,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1028204807, now seen corresponding path program 1 times [2022-11-25 17:45:25,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:25,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543229097] [2022-11-25 17:45:25,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:25,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:25,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:25,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543229097] [2022-11-25 17:45:25,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543229097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:25,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:25,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:45:25,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311206337] [2022-11-25 17:45:25,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:25,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:45:25,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:25,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:45:25,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:45:25,967 INFO L87 Difference]: Start difference. First operand 127 states and 223 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:26,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:26,137 INFO L93 Difference]: Finished difference Result 198 states and 342 transitions. [2022-11-25 17:45:26,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:45:26,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-11-25 17:45:26,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:26,139 INFO L225 Difference]: With dead ends: 198 [2022-11-25 17:45:26,142 INFO L226 Difference]: Without dead ends: 127 [2022-11-25 17:45:26,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:45:26,146 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 3 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:26,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 851 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:45:26,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-25 17:45:26,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-11-25 17:45:26,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.5317460317460319) internal successors, (193), 126 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:26,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 193 transitions. [2022-11-25 17:45:26,160 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 193 transitions. Word has length 37 [2022-11-25 17:45:26,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:26,161 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 193 transitions. [2022-11-25 17:45:26,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:26,161 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 193 transitions. [2022-11-25 17:45:26,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 17:45:26,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:26,164 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] [2022-11-25 17:45:26,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:45:26,164 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:26,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:26,165 INFO L85 PathProgramCache]: Analyzing trace with hash 792730303, now seen corresponding path program 1 times [2022-11-25 17:45:26,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:26,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686187390] [2022-11-25 17:45:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:26,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:26,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:26,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686187390] [2022-11-25 17:45:26,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686187390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:26,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:26,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:45:26,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399975100] [2022-11-25 17:45:26,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:26,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:26,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:26,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:26,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:26,355 INFO L87 Difference]: Start difference. First operand 127 states and 193 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:26,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:26,409 INFO L93 Difference]: Finished difference Result 247 states and 397 transitions. [2022-11-25 17:45:26,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:26,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-11-25 17:45:26,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:26,418 INFO L225 Difference]: With dead ends: 247 [2022-11-25 17:45:26,418 INFO L226 Difference]: Without dead ends: 180 [2022-11-25 17:45:26,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:26,426 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 89 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:26,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 330 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:45:26,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-25 17:45:26,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2022-11-25 17:45:26,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.5593220338983051) internal successors, (276), 177 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 276 transitions. [2022-11-25 17:45:26,452 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 276 transitions. Word has length 66 [2022-11-25 17:45:26,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:26,452 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 276 transitions. [2022-11-25 17:45:26,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:26,453 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 276 transitions. [2022-11-25 17:45:26,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-25 17:45:26,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:26,456 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] [2022-11-25 17:45:26,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:45:26,456 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:26,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:26,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1252750669, now seen corresponding path program 1 times [2022-11-25 17:45:26,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:26,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064558759] [2022-11-25 17:45:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:26,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:26,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:26,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064558759] [2022-11-25 17:45:26,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064558759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:26,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:26,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:45:26,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073449590] [2022-11-25 17:45:26,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:26,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:26,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:26,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:26,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:26,652 INFO L87 Difference]: Start difference. First operand 178 states and 276 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:26,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:26,678 INFO L93 Difference]: Finished difference Result 398 states and 644 transitions. [2022-11-25 17:45:26,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:26,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-11-25 17:45:26,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:26,681 INFO L225 Difference]: With dead ends: 398 [2022-11-25 17:45:26,681 INFO L226 Difference]: Without dead ends: 280 [2022-11-25 17:45:26,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:26,683 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 91 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:26,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 350 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:45:26,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-25 17:45:26,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 278. [2022-11-25 17:45:26,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.5992779783393503) internal successors, (443), 277 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:26,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 443 transitions. [2022-11-25 17:45:26,705 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 443 transitions. Word has length 68 [2022-11-25 17:45:26,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:26,705 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 443 transitions. [2022-11-25 17:45:26,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:26,706 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 443 transitions. [2022-11-25 17:45:26,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-25 17:45:26,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:26,708 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] [2022-11-25 17:45:26,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:45:26,709 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:26,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:26,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1185859003, now seen corresponding path program 1 times [2022-11-25 17:45:26,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:26,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794642647] [2022-11-25 17:45:26,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:26,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:26,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:26,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:26,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794642647] [2022-11-25 17:45:26,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794642647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:26,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:26,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:45:26,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654833946] [2022-11-25 17:45:26,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:26,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:26,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:26,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:26,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:26,806 INFO L87 Difference]: Start difference. First operand 278 states and 443 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:26,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:26,834 INFO L93 Difference]: Finished difference Result 682 states and 1117 transitions. [2022-11-25 17:45:26,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:26,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-11-25 17:45:26,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:26,838 INFO L225 Difference]: With dead ends: 682 [2022-11-25 17:45:26,838 INFO L226 Difference]: Without dead ends: 464 [2022-11-25 17:45:26,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:26,840 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 85 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:26,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 351 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:45:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-11-25 17:45:26,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 462. [2022-11-25 17:45:26,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.6203904555314534) internal successors, (747), 461 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:26,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 747 transitions. [2022-11-25 17:45:26,861 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 747 transitions. Word has length 70 [2022-11-25 17:45:26,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:26,864 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 747 transitions. [2022-11-25 17:45:26,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:26,870 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 747 transitions. [2022-11-25 17:45:26,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-25 17:45:26,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:26,882 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] [2022-11-25 17:45:26,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:45:26,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:26,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:26,884 INFO L85 PathProgramCache]: Analyzing trace with hash -565459959, now seen corresponding path program 1 times [2022-11-25 17:45:26,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:26,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637955350] [2022-11-25 17:45:26,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:26,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:27,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:27,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:27,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637955350] [2022-11-25 17:45:27,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637955350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:27,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:27,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:45:27,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477892511] [2022-11-25 17:45:27,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:27,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:45:27,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:27,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:45:27,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:45:27,150 INFO L87 Difference]: Start difference. First operand 462 states and 747 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:27,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:27,431 INFO L93 Difference]: Finished difference Result 2290 states and 3809 transitions. [2022-11-25 17:45:27,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:45:27,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-11-25 17:45:27,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:27,443 INFO L225 Difference]: With dead ends: 2290 [2022-11-25 17:45:27,443 INFO L226 Difference]: Without dead ends: 1888 [2022-11-25 17:45:27,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:45:27,447 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 667 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:27,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1153 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:45:27,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2022-11-25 17:45:27,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 846. [2022-11-25 17:45:27,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 845 states have (on average 1.6366863905325444) internal successors, (1383), 845 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:27,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1383 transitions. [2022-11-25 17:45:27,533 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1383 transitions. Word has length 72 [2022-11-25 17:45:27,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:27,535 INFO L495 AbstractCegarLoop]: Abstraction has 846 states and 1383 transitions. [2022-11-25 17:45:27,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:27,535 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1383 transitions. [2022-11-25 17:45:27,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 17:45:27,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:27,538 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] [2022-11-25 17:45:27,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:45:27,539 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:27,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:27,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2022745121, now seen corresponding path program 1 times [2022-11-25 17:45:27,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:27,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499935038] [2022-11-25 17:45:27,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:27,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:27,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:27,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:27,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499935038] [2022-11-25 17:45:27,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499935038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:27,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:27,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:45:27,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70806742] [2022-11-25 17:45:27,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:27,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:45:27,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:27,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:45:27,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:45:27,710 INFO L87 Difference]: Start difference. First operand 846 states and 1383 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:27,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:27,913 INFO L93 Difference]: Finished difference Result 3044 states and 5034 transitions. [2022-11-25 17:45:27,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:45:27,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-11-25 17:45:27,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:27,924 INFO L225 Difference]: With dead ends: 3044 [2022-11-25 17:45:27,924 INFO L226 Difference]: Without dead ends: 2258 [2022-11-25 17:45:27,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:45:27,929 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 331 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:27,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 617 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:45:27,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2022-11-25 17:45:28,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1543. [2022-11-25 17:45:28,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1542 states have (on average 1.638780804150454) internal successors, (2527), 1542 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:28,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2527 transitions. [2022-11-25 17:45:28,062 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2527 transitions. Word has length 73 [2022-11-25 17:45:28,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:28,062 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2527 transitions. [2022-11-25 17:45:28,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2527 transitions. [2022-11-25 17:45:28,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-25 17:45:28,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:28,065 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] [2022-11-25 17:45:28,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:45:28,066 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:28,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:28,067 INFO L85 PathProgramCache]: Analyzing trace with hash 482119495, now seen corresponding path program 1 times [2022-11-25 17:45:28,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:28,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836403543] [2022-11-25 17:45:28,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:28,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:28,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:28,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836403543] [2022-11-25 17:45:28,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836403543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:28,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:28,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:45:28,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380265170] [2022-11-25 17:45:28,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:28,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:28,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:28,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:28,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:28,146 INFO L87 Difference]: Start difference. First operand 1543 states and 2527 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:28,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:28,295 INFO L93 Difference]: Finished difference Result 3037 states and 4986 transitions. [2022-11-25 17:45:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:28,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-11-25 17:45:28,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:28,306 INFO L225 Difference]: With dead ends: 3037 [2022-11-25 17:45:28,306 INFO L226 Difference]: Without dead ends: 2191 [2022-11-25 17:45:28,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:28,309 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 92 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:28,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 420 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:45:28,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2022-11-25 17:45:28,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 2189. [2022-11-25 17:45:28,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2189 states, 2188 states have (on average 1.6252285191956124) internal successors, (3556), 2188 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:28,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 3556 transitions. [2022-11-25 17:45:28,477 INFO L78 Accepts]: Start accepts. Automaton has 2189 states and 3556 transitions. Word has length 74 [2022-11-25 17:45:28,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:28,477 INFO L495 AbstractCegarLoop]: Abstraction has 2189 states and 3556 transitions. [2022-11-25 17:45:28,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:28,478 INFO L276 IsEmpty]: Start isEmpty. Operand 2189 states and 3556 transitions. [2022-11-25 17:45:28,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-25 17:45:28,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:28,484 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] [2022-11-25 17:45:28,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:45:28,486 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:28,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:28,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1535861927, now seen corresponding path program 1 times [2022-11-25 17:45:28,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:28,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145273827] [2022-11-25 17:45:28,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:28,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:28,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:28,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:28,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145273827] [2022-11-25 17:45:28,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145273827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:28,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:28,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:45:28,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125250044] [2022-11-25 17:45:28,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:28,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:28,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:28,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:28,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:28,614 INFO L87 Difference]: Start difference. First operand 2189 states and 3556 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:28,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:28,847 INFO L93 Difference]: Finished difference Result 4261 states and 6938 transitions. [2022-11-25 17:45:28,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:28,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-11-25 17:45:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:28,860 INFO L225 Difference]: With dead ends: 4261 [2022-11-25 17:45:28,861 INFO L226 Difference]: Without dead ends: 3073 [2022-11-25 17:45:28,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:28,864 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 86 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:28,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 409 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:45:28,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2022-11-25 17:45:29,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 3071. [2022-11-25 17:45:29,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3071 states, 3070 states have (on average 1.6104234527687296) internal successors, (4944), 3070 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:29,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 4944 transitions. [2022-11-25 17:45:29,100 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 4944 transitions. Word has length 74 [2022-11-25 17:45:29,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:29,101 INFO L495 AbstractCegarLoop]: Abstraction has 3071 states and 4944 transitions. [2022-11-25 17:45:29,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:29,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 4944 transitions. [2022-11-25 17:45:29,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-25 17:45:29,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:29,102 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] [2022-11-25 17:45:29,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:45:29,103 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:29,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:29,104 INFO L85 PathProgramCache]: Analyzing trace with hash 821728320, now seen corresponding path program 1 times [2022-11-25 17:45:29,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:29,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969277347] [2022-11-25 17:45:29,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:29,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:29,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:29,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:29,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969277347] [2022-11-25 17:45:29,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969277347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:29,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:29,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:45:29,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245939757] [2022-11-25 17:45:29,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:29,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:45:29,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:29,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:45:29,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:45:29,205 INFO L87 Difference]: Start difference. First operand 3071 states and 4944 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:29,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:29,737 INFO L93 Difference]: Finished difference Result 9776 states and 15807 transitions. [2022-11-25 17:45:29,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:45:29,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-11-25 17:45:29,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:29,768 INFO L225 Difference]: With dead ends: 9776 [2022-11-25 17:45:29,768 INFO L226 Difference]: Without dead ends: 6823 [2022-11-25 17:45:29,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:45:29,776 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 330 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:29,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 614 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:45:29,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6823 states. [2022-11-25 17:45:30,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6823 to 4923. [2022-11-25 17:45:30,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4923 states, 4922 states have (on average 1.5997561966680212) internal successors, (7874), 4922 states have internal predecessors, (7874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:30,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4923 states to 4923 states and 7874 transitions. [2022-11-25 17:45:30,219 INFO L78 Accepts]: Start accepts. Automaton has 4923 states and 7874 transitions. Word has length 74 [2022-11-25 17:45:30,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:30,220 INFO L495 AbstractCegarLoop]: Abstraction has 4923 states and 7874 transitions. [2022-11-25 17:45:30,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:30,220 INFO L276 IsEmpty]: Start isEmpty. Operand 4923 states and 7874 transitions. [2022-11-25 17:45:30,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-25 17:45:30,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:30,222 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] [2022-11-25 17:45:30,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:45:30,222 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:30,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:30,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1254834663, now seen corresponding path program 1 times [2022-11-25 17:45:30,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:30,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189131272] [2022-11-25 17:45:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:30,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:30,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:30,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:30,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189131272] [2022-11-25 17:45:30,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189131272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:30,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:30,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:45:30,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049327808] [2022-11-25 17:45:30,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:30,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:30,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:30,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:30,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:30,293 INFO L87 Difference]: Start difference. First operand 4923 states and 7874 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:30,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:30,830 INFO L93 Difference]: Finished difference Result 11800 states and 18979 transitions. [2022-11-25 17:45:30,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:30,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-11-25 17:45:30,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:30,863 INFO L225 Difference]: With dead ends: 11800 [2022-11-25 17:45:30,864 INFO L226 Difference]: Without dead ends: 6955 [2022-11-25 17:45:30,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:30,871 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 98 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:30,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 437 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:45:30,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6955 states. [2022-11-25 17:45:31,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6955 to 6953. [2022-11-25 17:45:31,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6953 states, 6952 states have (on average 1.6039988492520139) internal successors, (11151), 6952 states have internal predecessors, (11151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6953 states to 6953 states and 11151 transitions. [2022-11-25 17:45:31,460 INFO L78 Accepts]: Start accepts. Automaton has 6953 states and 11151 transitions. Word has length 74 [2022-11-25 17:45:31,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:31,460 INFO L495 AbstractCegarLoop]: Abstraction has 6953 states and 11151 transitions. [2022-11-25 17:45:31,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:31,461 INFO L276 IsEmpty]: Start isEmpty. Operand 6953 states and 11151 transitions. [2022-11-25 17:45:31,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-25 17:45:31,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:31,462 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] [2022-11-25 17:45:31,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:45:31,463 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:31,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:31,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1881049800, now seen corresponding path program 1 times [2022-11-25 17:45:31,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:31,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786979767] [2022-11-25 17:45:31,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:31,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:31,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:31,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786979767] [2022-11-25 17:45:31,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786979767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:31,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:31,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:45:31,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618723232] [2022-11-25 17:45:31,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:31,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:45:31,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:31,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:45:31,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:45:31,566 INFO L87 Difference]: Start difference. First operand 6953 states and 11151 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:32,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:32,675 INFO L93 Difference]: Finished difference Result 22120 states and 35544 transitions. [2022-11-25 17:45:32,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:45:32,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-11-25 17:45:32,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:32,718 INFO L225 Difference]: With dead ends: 22120 [2022-11-25 17:45:32,718 INFO L226 Difference]: Without dead ends: 15245 [2022-11-25 17:45:32,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:45:32,729 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 328 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:32,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 616 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:45:32,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15245 states. [2022-11-25 17:45:33,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15245 to 11046. [2022-11-25 17:45:33,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11046 states, 11045 states have (on average 1.5905839746491626) internal successors, (17568), 11045 states have internal predecessors, (17568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:33,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11046 states to 11046 states and 17568 transitions. [2022-11-25 17:45:33,700 INFO L78 Accepts]: Start accepts. Automaton has 11046 states and 17568 transitions. Word has length 75 [2022-11-25 17:45:33,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:33,700 INFO L495 AbstractCegarLoop]: Abstraction has 11046 states and 17568 transitions. [2022-11-25 17:45:33,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:33,702 INFO L276 IsEmpty]: Start isEmpty. Operand 11046 states and 17568 transitions. [2022-11-25 17:45:33,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 17:45:33,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:33,703 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] [2022-11-25 17:45:33,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:45:33,703 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:33,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:33,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1635147248, now seen corresponding path program 1 times [2022-11-25 17:45:33,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:33,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946144897] [2022-11-25 17:45:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:33,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:33,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:33,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946144897] [2022-11-25 17:45:33,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946144897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:33,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:33,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:45:33,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953514563] [2022-11-25 17:45:33,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:33,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:45:33,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:33,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:45:33,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:45:33,945 INFO L87 Difference]: Start difference. First operand 11046 states and 17568 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:34,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:34,922 INFO L93 Difference]: Finished difference Result 22016 states and 35033 transitions. [2022-11-25 17:45:34,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:45:34,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-25 17:45:34,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:34,953 INFO L225 Difference]: With dead ends: 22016 [2022-11-25 17:45:34,953 INFO L226 Difference]: Without dead ends: 11048 [2022-11-25 17:45:34,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:45:34,965 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 86 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:34,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 668 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:45:34,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11048 states. [2022-11-25 17:45:35,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11048 to 11046. [2022-11-25 17:45:35,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11046 states, 11045 states have (on average 1.5770031688546853) internal successors, (17418), 11045 states have internal predecessors, (17418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11046 states to 11046 states and 17418 transitions. [2022-11-25 17:45:35,908 INFO L78 Accepts]: Start accepts. Automaton has 11046 states and 17418 transitions. Word has length 77 [2022-11-25 17:45:35,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:35,908 INFO L495 AbstractCegarLoop]: Abstraction has 11046 states and 17418 transitions. [2022-11-25 17:45:35,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:35,909 INFO L276 IsEmpty]: Start isEmpty. Operand 11046 states and 17418 transitions. [2022-11-25 17:45:35,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-25 17:45:35,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:35,911 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] [2022-11-25 17:45:35,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:45:35,911 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:35,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:35,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1744604605, now seen corresponding path program 1 times [2022-11-25 17:45:35,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:35,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779145049] [2022-11-25 17:45:35,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:35,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:36,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:36,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:36,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779145049] [2022-11-25 17:45:36,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779145049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:36,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:36,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:45:36,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141965094] [2022-11-25 17:45:36,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:36,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:45:36,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:36,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:45:36,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:45:36,222 INFO L87 Difference]: Start difference. First operand 11046 states and 17418 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:37,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:37,978 INFO L93 Difference]: Finished difference Result 31861 states and 50385 transitions. [2022-11-25 17:45:37,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:45:37,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-25 17:45:37,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:38,045 INFO L225 Difference]: With dead ends: 31861 [2022-11-25 17:45:38,045 INFO L226 Difference]: Without dead ends: 20893 [2022-11-25 17:45:38,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:45:38,064 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 84 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:38,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 678 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:45:38,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20893 states. [2022-11-25 17:45:39,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20893 to 20891. [2022-11-25 17:45:39,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20891 states, 20890 states have (on average 1.5632359980852082) internal successors, (32656), 20890 states have internal predecessors, (32656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:39,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20891 states to 20891 states and 32656 transitions. [2022-11-25 17:45:39,955 INFO L78 Accepts]: Start accepts. Automaton has 20891 states and 32656 transitions. Word has length 80 [2022-11-25 17:45:39,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:39,955 INFO L495 AbstractCegarLoop]: Abstraction has 20891 states and 32656 transitions. [2022-11-25 17:45:39,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:39,956 INFO L276 IsEmpty]: Start isEmpty. Operand 20891 states and 32656 transitions. [2022-11-25 17:45:39,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-25 17:45:39,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:39,957 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] [2022-11-25 17:45:39,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:45:39,958 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:39,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:39,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1323256441, now seen corresponding path program 1 times [2022-11-25 17:45:39,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:39,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106451076] [2022-11-25 17:45:39,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:39,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:40,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:40,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106451076] [2022-11-25 17:45:40,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106451076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:40,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:40,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:45:40,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137101135] [2022-11-25 17:45:40,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:40,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:45:40,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:40,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:45:40,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:45:40,394 INFO L87 Difference]: Start difference. First operand 20891 states and 32656 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:44,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:44,069 INFO L93 Difference]: Finished difference Result 42592 states and 65832 transitions. [2022-11-25 17:45:44,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:45:44,070 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-25 17:45:44,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:44,188 INFO L225 Difference]: With dead ends: 42592 [2022-11-25 17:45:44,188 INFO L226 Difference]: Without dead ends: 42590 [2022-11-25 17:45:44,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-25 17:45:44,200 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 836 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:44,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1028 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:45:44,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42590 states. [2022-11-25 17:45:46,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42590 to 22052. [2022-11-25 17:45:46,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22052 states, 22051 states have (on average 1.5331730987256813) internal successors, (33808), 22051 states have internal predecessors, (33808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22052 states to 22052 states and 33808 transitions. [2022-11-25 17:45:46,922 INFO L78 Accepts]: Start accepts. Automaton has 22052 states and 33808 transitions. Word has length 81 [2022-11-25 17:45:46,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:46,923 INFO L495 AbstractCegarLoop]: Abstraction has 22052 states and 33808 transitions. [2022-11-25 17:45:46,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:46,923 INFO L276 IsEmpty]: Start isEmpty. Operand 22052 states and 33808 transitions. [2022-11-25 17:45:46,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-25 17:45:46,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:46,927 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:46,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:45:46,928 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:46,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:46,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1301469614, now seen corresponding path program 1 times [2022-11-25 17:45:46,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:46,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737880492] [2022-11-25 17:45:46,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:46,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 17:45:47,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:47,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737880492] [2022-11-25 17:45:47,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737880492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:47,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:47,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:45:47,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076431073] [2022-11-25 17:45:47,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:47,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:45:47,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:47,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:45:47,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:45:47,143 INFO L87 Difference]: Start difference. First operand 22052 states and 33808 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:51,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:51,322 INFO L93 Difference]: Finished difference Result 55228 states and 84835 transitions. [2022-11-25 17:45:51,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:45:51,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 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 107 [2022-11-25 17:45:51,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:51,439 INFO L225 Difference]: With dead ends: 55228 [2022-11-25 17:45:51,439 INFO L226 Difference]: Without dead ends: 45002 [2022-11-25 17:45:51,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:45:51,461 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 415 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:51,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 805 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:45:51,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45002 states. [2022-11-25 17:45:55,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45002 to 34652. [2022-11-25 17:45:55,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34652 states, 34651 states have (on average 1.5287581887968602) internal successors, (52973), 34651 states have internal predecessors, (52973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:55,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34652 states to 34652 states and 52973 transitions. [2022-11-25 17:45:55,186 INFO L78 Accepts]: Start accepts. Automaton has 34652 states and 52973 transitions. Word has length 107 [2022-11-25 17:45:55,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:55,186 INFO L495 AbstractCegarLoop]: Abstraction has 34652 states and 52973 transitions. [2022-11-25 17:45:55,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:55,187 INFO L276 IsEmpty]: Start isEmpty. Operand 34652 states and 52973 transitions. [2022-11-25 17:45:55,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-25 17:45:55,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:55,190 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:55,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:45:55,190 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:55,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:55,191 INFO L85 PathProgramCache]: Analyzing trace with hash -247727182, now seen corresponding path program 1 times [2022-11-25 17:45:55,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:55,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239698591] [2022-11-25 17:45:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:55,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 17:45:55,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:55,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239698591] [2022-11-25 17:45:55,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239698591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:55,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:55,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:45:55,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846600394] [2022-11-25 17:45:55,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:55,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:45:55,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:55,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:45:55,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:45:55,358 INFO L87 Difference]: Start difference. First operand 34652 states and 52973 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:00,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:46:00,130 INFO L93 Difference]: Finished difference Result 59356 states and 91187 transitions. [2022-11-25 17:46:00,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:46:00,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 107 [2022-11-25 17:46:00,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:46:00,216 INFO L225 Difference]: With dead ends: 59356 [2022-11-25 17:46:00,216 INFO L226 Difference]: Without dead ends: 49130 [2022-11-25 17:46:00,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:46:00,234 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 420 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:46:00,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 859 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:46:00,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49130 states. [2022-11-25 17:46:04,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49130 to 47052. [2022-11-25 17:46:04,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47052 states, 47051 states have (on average 1.5290429533910013) internal successors, (71943), 47051 states have internal predecessors, (71943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:04,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47052 states to 47052 states and 71943 transitions. [2022-11-25 17:46:04,433 INFO L78 Accepts]: Start accepts. Automaton has 47052 states and 71943 transitions. Word has length 107 [2022-11-25 17:46:04,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:46:04,434 INFO L495 AbstractCegarLoop]: Abstraction has 47052 states and 71943 transitions. [2022-11-25 17:46:04,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:04,435 INFO L276 IsEmpty]: Start isEmpty. Operand 47052 states and 71943 transitions. [2022-11-25 17:46:04,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-25 17:46:04,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:46:04,437 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:04,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 17:46:04,438 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:46:04,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:04,439 INFO L85 PathProgramCache]: Analyzing trace with hash -528754446, now seen corresponding path program 1 times [2022-11-25 17:46:04,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:04,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592534535] [2022-11-25 17:46:04,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:04,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:04,638 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:46:04,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:04,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592534535] [2022-11-25 17:46:04,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592534535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:04,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:04,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:46:04,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213093402] [2022-11-25 17:46:04,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:04,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:46:04,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:04,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:46:04,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:46:04,642 INFO L87 Difference]: Start difference. First operand 47052 states and 71943 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:10,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:46:10,172 INFO L93 Difference]: Finished difference Result 70034 states and 107626 transitions. [2022-11-25 17:46:10,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:46:10,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 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 107 [2022-11-25 17:46:10,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:46:10,263 INFO L225 Difference]: With dead ends: 70034 [2022-11-25 17:46:10,264 INFO L226 Difference]: Without dead ends: 57322 [2022-11-25 17:46:10,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:46:10,278 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 420 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:46:10,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 819 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:46:10,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57322 states. [2022-11-25 17:46:15,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57322 to 55244. [2022-11-25 17:46:15,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55244 states, 55243 states have (on average 1.5307097731839328) internal successors, (84561), 55243 states have internal predecessors, (84561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:15,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55244 states to 55244 states and 84561 transitions. [2022-11-25 17:46:15,204 INFO L78 Accepts]: Start accepts. Automaton has 55244 states and 84561 transitions. Word has length 107 [2022-11-25 17:46:15,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:46:15,205 INFO L495 AbstractCegarLoop]: Abstraction has 55244 states and 84561 transitions. [2022-11-25 17:46:15,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:15,205 INFO L276 IsEmpty]: Start isEmpty. Operand 55244 states and 84561 transitions. [2022-11-25 17:46:15,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-25 17:46:15,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:46:15,208 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 17:46:15,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 17:46:15,209 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:46:15,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:15,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1134351272, now seen corresponding path program 1 times [2022-11-25 17:46:15,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:15,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963556501] [2022-11-25 17:46:15,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:15,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:15,372 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:46:15,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:15,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963556501] [2022-11-25 17:46:15,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963556501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:15,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:15,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:46:15,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384632611] [2022-11-25 17:46:15,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:15,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:46:15,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:15,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:46:15,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:46:15,377 INFO L87 Difference]: Start difference. First operand 55244 states and 84561 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)