./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label23.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label23.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8 --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 adf96f71bf2a13ae5fd22bce01b9c481e5a9d21572a73a17cea58c8fcaecb44e --- 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-2329fc7 [2022-12-13 15:56:42,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:56:42,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:56:42,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:56:42,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:56:42,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:56:42,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:56:42,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:56:42,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:56:42,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:56:42,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:56:42,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:56:42,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:56:42,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:56:42,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:56:42,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:56:42,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:56:42,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:56:42,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:56:42,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:56:42,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:56:42,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:56:42,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:56:42,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:56:42,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:56:42,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:56:42,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:56:42,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:56:42,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:56:42,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:56:42,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:56:42,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:56:42,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:56:42,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:56:42,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:56:42,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:56:42,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:56:42,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:56:42,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:56:42,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:56:42,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:56:42,315 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:56:42,335 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:56:42,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:56:42,336 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:56:42,336 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:56:42,336 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:56:42,337 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:56:42,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:56:42,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:56:42,338 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:56:42,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:56:42,338 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:56:42,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:56:42,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:56:42,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:56:42,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:56:42,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:56:42,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:56:42,339 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:56:42,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:56:42,340 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:56:42,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:56:42,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:56:42,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:56:42,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:56:42,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:56:42,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:56:42,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:56:42,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:56:42,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:56:42,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:56:42,342 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:56:42,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:56:42,342 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:56:42,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:56:42,342 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:56:42,342 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_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adf96f71bf2a13ae5fd22bce01b9c481e5a9d21572a73a17cea58c8fcaecb44e [2022-12-13 15:56:42,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:56:42,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:56:42,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:56:42,556 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:56:42,556 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:56:42,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/eca-rers2012/Problem13_label23.c [2022-12-13 15:56:45,180 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:56:45,466 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:56:45,466 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/sv-benchmarks/c/eca-rers2012/Problem13_label23.c [2022-12-13 15:56:45,486 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/data/d3742197a/ebab3cb8df4843bda0cac9c615451007/FLAG5ed98fe01 [2022-12-13 15:56:45,497 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/data/d3742197a/ebab3cb8df4843bda0cac9c615451007 [2022-12-13 15:56:45,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:56:45,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:56:45,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:56:45,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:56:45,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:56:45,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:56:45" (1/1) ... [2022-12-13 15:56:45,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4280a1ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:56:45, skipping insertion in model container [2022-12-13 15:56:45,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:56:45" (1/1) ... [2022-12-13 15:56:45,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:56:45,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:56:45,762 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_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/sv-benchmarks/c/eca-rers2012/Problem13_label23.c[2192,2205] [2022-12-13 15:56:46,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:56:46,409 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:56:46,420 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_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/sv-benchmarks/c/eca-rers2012/Problem13_label23.c[2192,2205] [2022-12-13 15:56:46,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:56:46,870 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:56:46,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:56:46 WrapperNode [2022-12-13 15:56:46,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:56:46,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:56:46,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:56:46,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:56:46,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:56:46" (1/1) ... [2022-12-13 15:56:46,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:56:46" (1/1) ... [2022-12-13 15:56:47,257 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-12-13 15:56:47,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:56:47,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:56:47,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:56:47,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:56:47,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:56:46" (1/1) ... [2022-12-13 15:56:47,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:56:46" (1/1) ... [2022-12-13 15:56:47,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:56:46" (1/1) ... [2022-12-13 15:56:47,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:56:46" (1/1) ... [2022-12-13 15:56:47,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:56:46" (1/1) ... [2022-12-13 15:56:47,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:56:46" (1/1) ... [2022-12-13 15:56:47,575 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:56:46" (1/1) ... [2022-12-13 15:56:47,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:56:46" (1/1) ... [2022-12-13 15:56:47,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:56:47,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:56:47,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:56:47,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:56:47,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:56:46" (1/1) ... [2022-12-13 15:56:47,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:56:47,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:56:47,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:56:47,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:56:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:56:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:56:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:56:47,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:56:47,812 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:56:47,813 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:56:52,208 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:56:52,220 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:56:52,220 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 15:56:52,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:56:52 BoogieIcfgContainer [2022-12-13 15:56:52,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:56:52,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:56:52,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:56:52,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:56:52,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:56:45" (1/3) ... [2022-12-13 15:56:52,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b8f695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:56:52, skipping insertion in model container [2022-12-13 15:56:52,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:56:46" (2/3) ... [2022-12-13 15:56:52,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b8f695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:56:52, skipping insertion in model container [2022-12-13 15:56:52,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:56:52" (3/3) ... [2022-12-13 15:56:52,229 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label23.c [2022-12-13 15:56:52,245 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:56:52,245 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 15:56:52,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:56:52,307 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;@55b41813, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:56:52,307 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 15:56:52,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:56:52,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 15:56:52,317 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:56:52,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:56:52,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:56:52,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:56:52,321 INFO L85 PathProgramCache]: Analyzing trace with hash -461255479, now seen corresponding path program 1 times [2022-12-13 15:56:52,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:56:52,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349465404] [2022-12-13 15:56:52,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:56:52,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:56:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:52,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:56:52,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:56:52,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349465404] [2022-12-13 15:56:52,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349465404] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:56:52,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:56:52,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:56:52,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913569316] [2022-12-13 15:56:52,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:56:52,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:56:52,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:56:52,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:56:52,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:56:52,505 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:56:57,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:56:57,220 INFO L93 Difference]: Finished difference Result 3160 states and 5843 transitions. [2022-12-13 15:56:57,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:56:57,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-12-13 15:56:57,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:56:57,242 INFO L225 Difference]: With dead ends: 3160 [2022-12-13 15:56:57,242 INFO L226 Difference]: Without dead ends: 1983 [2022-12-13 15:56:57,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:56:57,251 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 1090 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-12-13 15:56:57,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 340 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-12-13 15:56:57,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2022-12-13 15:56:57,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1930. [2022-12-13 15:56:57,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 1.7973043027475375) internal successors, (3467), 1929 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:56:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3467 transitions. [2022-12-13 15:56:57,343 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3467 transitions. Word has length 13 [2022-12-13 15:56:57,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:56:57,343 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 3467 transitions. [2022-12-13 15:56:57,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:56:57,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3467 transitions. [2022-12-13 15:56:57,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 15:56:57,346 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:56:57,346 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 15:56:57,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:56:57,346 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:56:57,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:56:57,347 INFO L85 PathProgramCache]: Analyzing trace with hash 365234242, now seen corresponding path program 1 times [2022-12-13 15:56:57,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:56:57,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581485434] [2022-12-13 15:56:57,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:56:57,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:56:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:56:57,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:56:57,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581485434] [2022-12-13 15:56:57,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581485434] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:56:57,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:56:57,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:56:57,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820635566] [2022-12-13 15:56:57,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:56:57,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:56:57,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:56:57,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:56:57,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:56:57,565 INFO L87 Difference]: Start difference. First operand 1930 states and 3467 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:00,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:00,922 INFO L93 Difference]: Finished difference Result 5456 states and 9917 transitions. [2022-12-13 15:57:00,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:00,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-12-13 15:57:00,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:00,930 INFO L225 Difference]: With dead ends: 5456 [2022-12-13 15:57:00,930 INFO L226 Difference]: Without dead ends: 3528 [2022-12-13 15:57:00,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:00,932 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:00,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1007 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 15:57:00,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2022-12-13 15:57:00,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2022-12-13 15:57:00,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3525 states have (on average 1.5670921985815602) internal successors, (5524), 3525 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5524 transitions. [2022-12-13 15:57:00,979 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5524 transitions. Word has length 78 [2022-12-13 15:57:00,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:00,979 INFO L495 AbstractCegarLoop]: Abstraction has 3526 states and 5524 transitions. [2022-12-13 15:57:00,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:00,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5524 transitions. [2022-12-13 15:57:00,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-13 15:57:00,981 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:00,981 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 15:57:00,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:57:00,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:00,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:00,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1133112465, now seen corresponding path program 1 times [2022-12-13 15:57:00,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:00,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739212096] [2022-12-13 15:57:00,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:00,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:57:01,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:01,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739212096] [2022-12-13 15:57:01,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739212096] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:01,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:01,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:57:01,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882167432] [2022-12-13 15:57:01,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:01,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:01,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:01,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:01,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:01,070 INFO L87 Difference]: Start difference. First operand 3526 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:04,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:04,262 INFO L93 Difference]: Finished difference Result 10232 states and 16097 transitions. [2022-12-13 15:57:04,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:04,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-12-13 15:57:04,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:04,275 INFO L225 Difference]: With dead ends: 10232 [2022-12-13 15:57:04,275 INFO L226 Difference]: Without dead ends: 6708 [2022-12-13 15:57:04,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:04,279 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:04,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 850 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 15:57:04,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6708 states. [2022-12-13 15:57:04,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6708 to 6700. [2022-12-13 15:57:04,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 6699 states have (on average 1.413046723391551) internal successors, (9466), 6699 states have internal predecessors, (9466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:04,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 9466 transitions. [2022-12-13 15:57:04,366 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 9466 transitions. Word has length 84 [2022-12-13 15:57:04,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:04,366 INFO L495 AbstractCegarLoop]: Abstraction has 6700 states and 9466 transitions. [2022-12-13 15:57:04,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:04,366 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 9466 transitions. [2022-12-13 15:57:04,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 15:57:04,368 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:04,368 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:57:04,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:57:04,368 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:04,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:04,369 INFO L85 PathProgramCache]: Analyzing trace with hash 659309084, now seen corresponding path program 1 times [2022-12-13 15:57:04,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:04,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884486264] [2022-12-13 15:57:04,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:04,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:57:04,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:04,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884486264] [2022-12-13 15:57:04,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884486264] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:04,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:04,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:57:04,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69689460] [2022-12-13 15:57:04,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:04,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:04,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:04,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:04,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:04,471 INFO L87 Difference]: Start difference. First operand 6700 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:08,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:08,211 INFO L93 Difference]: Finished difference Result 17443 states and 24479 transitions. [2022-12-13 15:57:08,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:08,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2022-12-13 15:57:08,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:08,230 INFO L225 Difference]: With dead ends: 17443 [2022-12-13 15:57:08,230 INFO L226 Difference]: Without dead ends: 10745 [2022-12-13 15:57:08,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:08,236 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:08,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 965 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 15:57:08,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2022-12-13 15:57:08,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 10669. [2022-12-13 15:57:08,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3562992125984252) internal successors, (14469), 10668 states have internal predecessors, (14469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:08,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14469 transitions. [2022-12-13 15:57:08,360 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14469 transitions. Word has length 114 [2022-12-13 15:57:08,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:08,361 INFO L495 AbstractCegarLoop]: Abstraction has 10669 states and 14469 transitions. [2022-12-13 15:57:08,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:08,361 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14469 transitions. [2022-12-13 15:57:08,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-12-13 15:57:08,363 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:08,363 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:57:08,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:57:08,363 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:08,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:08,364 INFO L85 PathProgramCache]: Analyzing trace with hash -606577547, now seen corresponding path program 1 times [2022-12-13 15:57:08,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:08,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796149430] [2022-12-13 15:57:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:08,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:57:08,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:08,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796149430] [2022-12-13 15:57:08,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796149430] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:08,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:08,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:57:08,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801098011] [2022-12-13 15:57:08,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:08,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:08,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:08,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:08,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:08,490 INFO L87 Difference]: Start difference. First operand 10669 states and 14469 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:11,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:11,928 INFO L93 Difference]: Finished difference Result 30031 states and 41242 transitions. [2022-12-13 15:57:11,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:11,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-12-13 15:57:11,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:11,960 INFO L225 Difference]: With dead ends: 30031 [2022-12-13 15:57:11,960 INFO L226 Difference]: Without dead ends: 20151 [2022-12-13 15:57:11,967 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 [2022-12-13 15:57:11,968 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 853 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:11,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1160 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 15:57:11,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20151 states. [2022-12-13 15:57:12,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20151 to 18550. [2022-12-13 15:57:12,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18550 states, 18549 states have (on average 1.252466440239366) internal successors, (23232), 18549 states have internal predecessors, (23232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:12,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18550 states to 18550 states and 23232 transitions. [2022-12-13 15:57:12,201 INFO L78 Accepts]: Start accepts. Automaton has 18550 states and 23232 transitions. Word has length 124 [2022-12-13 15:57:12,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:12,202 INFO L495 AbstractCegarLoop]: Abstraction has 18550 states and 23232 transitions. [2022-12-13 15:57:12,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:12,202 INFO L276 IsEmpty]: Start isEmpty. Operand 18550 states and 23232 transitions. [2022-12-13 15:57:12,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-12-13 15:57:12,203 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:12,203 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:57:12,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:57:12,203 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:12,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:12,205 INFO L85 PathProgramCache]: Analyzing trace with hash 889611492, now seen corresponding path program 1 times [2022-12-13 15:57:12,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:12,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76571797] [2022-12-13 15:57:12,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:12,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:57:12,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:12,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76571797] [2022-12-13 15:57:12,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76571797] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:12,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:12,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:57:12,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828822894] [2022-12-13 15:57:12,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:12,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:12,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:12,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:12,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:12,366 INFO L87 Difference]: Start difference. First operand 18550 states and 23232 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:15,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:15,555 INFO L93 Difference]: Finished difference Result 44989 states and 55638 transitions. [2022-12-13 15:57:15,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:15,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2022-12-13 15:57:15,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:15,583 INFO L225 Difference]: With dead ends: 44989 [2022-12-13 15:57:15,583 INFO L226 Difference]: Without dead ends: 26441 [2022-12-13 15:57:15,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:15,591 INFO L413 NwaCegarLoop]: 1030 mSDtfsCounter, 730 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:15,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1214 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 15:57:15,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26441 states. [2022-12-13 15:57:15,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26441 to 26434. [2022-12-13 15:57:15,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26434 states, 26433 states have (on average 1.2007717625695153) internal successors, (31740), 26433 states have internal predecessors, (31740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:15,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26434 states to 26434 states and 31740 transitions. [2022-12-13 15:57:15,816 INFO L78 Accepts]: Start accepts. Automaton has 26434 states and 31740 transitions. Word has length 129 [2022-12-13 15:57:15,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:15,816 INFO L495 AbstractCegarLoop]: Abstraction has 26434 states and 31740 transitions. [2022-12-13 15:57:15,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:15,817 INFO L276 IsEmpty]: Start isEmpty. Operand 26434 states and 31740 transitions. [2022-12-13 15:57:15,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-12-13 15:57:15,818 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:15,818 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:57:15,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:57:15,819 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:15,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:15,819 INFO L85 PathProgramCache]: Analyzing trace with hash -836746136, now seen corresponding path program 1 times [2022-12-13 15:57:15,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:15,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127028837] [2022-12-13 15:57:15,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:15,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:57:15,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:15,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127028837] [2022-12-13 15:57:15,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127028837] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:15,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:15,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:57:15,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773702413] [2022-12-13 15:57:15,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:15,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:15,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:15,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:15,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:15,929 INFO L87 Difference]: Start difference. First operand 26434 states and 31740 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:19,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:19,069 INFO L93 Difference]: Finished difference Result 72535 states and 87976 transitions. [2022-12-13 15:57:19,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:19,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 227 [2022-12-13 15:57:19,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:19,146 INFO L225 Difference]: With dead ends: 72535 [2022-12-13 15:57:19,146 INFO L226 Difference]: Without dead ends: 46103 [2022-12-13 15:57:19,157 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 [2022-12-13 15:57:19,158 INFO L413 NwaCegarLoop]: 1847 mSDtfsCounter, 840 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:19,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1984 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 15:57:19,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46103 states. [2022-12-13 15:57:19,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46103 to 42946. [2022-12-13 15:57:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42946 states, 42945 states have (on average 1.17205728257073) internal successors, (50334), 42945 states have internal predecessors, (50334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:19,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42946 states to 42946 states and 50334 transitions. [2022-12-13 15:57:19,539 INFO L78 Accepts]: Start accepts. Automaton has 42946 states and 50334 transitions. Word has length 227 [2022-12-13 15:57:19,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:19,539 INFO L495 AbstractCegarLoop]: Abstraction has 42946 states and 50334 transitions. [2022-12-13 15:57:19,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:19,540 INFO L276 IsEmpty]: Start isEmpty. Operand 42946 states and 50334 transitions. [2022-12-13 15:57:19,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-12-13 15:57:19,542 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:19,542 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:57:19,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:57:19,542 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:19,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:19,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1380443233, now seen corresponding path program 1 times [2022-12-13 15:57:19,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:19,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034389070] [2022-12-13 15:57:19,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:19,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 15:57:19,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:19,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034389070] [2022-12-13 15:57:19,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034389070] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:19,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:19,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:57:19,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076932991] [2022-12-13 15:57:19,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:19,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:19,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:19,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:19,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:19,926 INFO L87 Difference]: Start difference. First operand 42946 states and 50334 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 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) [2022-12-13 15:57:22,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:22,654 INFO L93 Difference]: Finished difference Result 85103 states and 99869 transitions. [2022-12-13 15:57:22,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:22,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2022-12-13 15:57:22,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:22,687 INFO L225 Difference]: With dead ends: 85103 [2022-12-13 15:57:22,687 INFO L226 Difference]: Without dead ends: 42946 [2022-12-13 15:57:22,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:22,704 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 2505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:22,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1193 Invalid, 2505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 15:57:22,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42946 states. [2022-12-13 15:57:22,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42946 to 42946. [2022-12-13 15:57:23,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42946 states, 42945 states have (on average 1.1719408545814414) internal successors, (50329), 42945 states have internal predecessors, (50329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:23,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42946 states to 42946 states and 50329 transitions. [2022-12-13 15:57:23,052 INFO L78 Accepts]: Start accepts. Automaton has 42946 states and 50329 transitions. Word has length 233 [2022-12-13 15:57:23,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:23,052 INFO L495 AbstractCegarLoop]: Abstraction has 42946 states and 50329 transitions. [2022-12-13 15:57:23,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 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) [2022-12-13 15:57:23,052 INFO L276 IsEmpty]: Start isEmpty. Operand 42946 states and 50329 transitions. [2022-12-13 15:57:23,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-12-13 15:57:23,054 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:23,055 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:57:23,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:57:23,055 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:23,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:23,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1208046358, now seen corresponding path program 1 times [2022-12-13 15:57:23,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:23,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847155120] [2022-12-13 15:57:23,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:23,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:23,172 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:57:23,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:23,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847155120] [2022-12-13 15:57:23,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847155120] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:23,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:23,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:57:23,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068063879] [2022-12-13 15:57:23,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:23,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:23,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:23,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:23,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:23,174 INFO L87 Difference]: Start difference. First operand 42946 states and 50329 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:26,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:26,418 INFO L93 Difference]: Finished difference Result 104790 states and 124853 transitions. [2022-12-13 15:57:26,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:26,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 240 [2022-12-13 15:57:26,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:26,480 INFO L225 Difference]: With dead ends: 104790 [2022-12-13 15:57:26,481 INFO L226 Difference]: Without dead ends: 62633 [2022-12-13 15:57:26,502 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 [2022-12-13 15:57:26,502 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 825 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:26,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 928 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 15:57:26,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62633 states. [2022-12-13 15:57:26,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62633 to 61048. [2022-12-13 15:57:26,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61048 states, 61047 states have (on average 1.161138139466313) internal successors, (70884), 61047 states have internal predecessors, (70884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:27,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61048 states to 61048 states and 70884 transitions. [2022-12-13 15:57:27,034 INFO L78 Accepts]: Start accepts. Automaton has 61048 states and 70884 transitions. Word has length 240 [2022-12-13 15:57:27,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:27,034 INFO L495 AbstractCegarLoop]: Abstraction has 61048 states and 70884 transitions. [2022-12-13 15:57:27,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:27,034 INFO L276 IsEmpty]: Start isEmpty. Operand 61048 states and 70884 transitions. [2022-12-13 15:57:27,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-12-13 15:57:27,037 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:27,037 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:57:27,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:57:27,037 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:27,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:27,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1350158918, now seen corresponding path program 1 times [2022-12-13 15:57:27,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:27,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974254511] [2022-12-13 15:57:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:27,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-13 15:57:27,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:27,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974254511] [2022-12-13 15:57:27,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974254511] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:27,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:27,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:57:27,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971351004] [2022-12-13 15:57:27,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:27,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:27,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:27,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:27,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:27,359 INFO L87 Difference]: Start difference. First operand 61048 states and 70884 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:30,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:30,388 INFO L93 Difference]: Finished difference Result 121305 states and 140973 transitions. [2022-12-13 15:57:30,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:30,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 254 [2022-12-13 15:57:30,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:30,454 INFO L225 Difference]: With dead ends: 121305 [2022-12-13 15:57:30,454 INFO L226 Difference]: Without dead ends: 61046 [2022-12-13 15:57:30,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:30,481 INFO L413 NwaCegarLoop]: 1357 mSDtfsCounter, 1193 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:30,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 1438 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 15:57:30,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61046 states. [2022-12-13 15:57:30,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61046 to 61045. [2022-12-13 15:57:31,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61045 states, 61044 states have (on average 1.1303322193827403) internal successors, (69000), 61044 states have internal predecessors, (69000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:31,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61045 states to 61045 states and 69000 transitions. [2022-12-13 15:57:31,078 INFO L78 Accepts]: Start accepts. Automaton has 61045 states and 69000 transitions. Word has length 254 [2022-12-13 15:57:31,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:31,079 INFO L495 AbstractCegarLoop]: Abstraction has 61045 states and 69000 transitions. [2022-12-13 15:57:31,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:31,079 INFO L276 IsEmpty]: Start isEmpty. Operand 61045 states and 69000 transitions. [2022-12-13 15:57:31,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-12-13 15:57:31,082 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:31,082 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:57:31,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 15:57:31,082 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:31,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:31,082 INFO L85 PathProgramCache]: Analyzing trace with hash 290243953, now seen corresponding path program 1 times [2022-12-13 15:57:31,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:31,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265036494] [2022-12-13 15:57:31,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:31,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:31,976 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 150 proven. 113 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 15:57:31,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:31,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265036494] [2022-12-13 15:57:31,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265036494] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:57:31,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692261139] [2022-12-13 15:57:31,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:31,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:57:31,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:57:31,978 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:57:31,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:57:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:32,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:57:32,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:57:32,201 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-13 15:57:32,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:57:32,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692261139] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:32,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:57:32,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-12-13 15:57:32,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563790924] [2022-12-13 15:57:32,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:32,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:32,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:32,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:32,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:57:32,203 INFO L87 Difference]: Start difference. First operand 61045 states and 69000 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:35,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:35,379 INFO L93 Difference]: Finished difference Result 121290 states and 137196 transitions. [2022-12-13 15:57:35,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:35,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 319 [2022-12-13 15:57:35,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:35,435 INFO L225 Difference]: With dead ends: 121290 [2022-12-13 15:57:35,435 INFO L226 Difference]: Without dead ends: 61034 [2022-12-13 15:57:35,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:57:35,463 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 1073 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:35,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 816 Invalid, 2919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 15:57:35,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61034 states. [2022-12-13 15:57:35,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61034 to 61031. [2022-12-13 15:57:35,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61031 states, 61030 states have (on average 1.0942978862854333) internal successors, (66785), 61030 states have internal predecessors, (66785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:36,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61031 states to 61031 states and 66785 transitions. [2022-12-13 15:57:36,068 INFO L78 Accepts]: Start accepts. Automaton has 61031 states and 66785 transitions. Word has length 319 [2022-12-13 15:57:36,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:36,069 INFO L495 AbstractCegarLoop]: Abstraction has 61031 states and 66785 transitions. [2022-12-13 15:57:36,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:36,069 INFO L276 IsEmpty]: Start isEmpty. Operand 61031 states and 66785 transitions. [2022-12-13 15:57:36,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-12-13 15:57:36,073 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:36,073 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 15:57:36,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:57:36,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:57:36,275 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:36,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash 448094546, now seen corresponding path program 1 times [2022-12-13 15:57:36,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:36,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963212459] [2022-12-13 15:57:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:36,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-12-13 15:57:36,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:36,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963212459] [2022-12-13 15:57:36,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963212459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:36,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:36,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:57:36,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573857706] [2022-12-13 15:57:36,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:36,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:57:36,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:36,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:57:36,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:57:36,471 INFO L87 Difference]: Start difference. First operand 61031 states and 66785 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:43,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:43,840 INFO L93 Difference]: Finished difference Result 160046 states and 175830 transitions. [2022-12-13 15:57:43,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:57:43,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 361 [2022-12-13 15:57:43,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:43,925 INFO L225 Difference]: With dead ends: 160046 [2022-12-13 15:57:43,925 INFO L226 Difference]: Without dead ends: 99804 [2022-12-13 15:57:43,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:57:43,942 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 1700 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 6693 mSolverCounterSat, 1015 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 7708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1015 IncrementalHoareTripleChecker+Valid, 6693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:43,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 849 Invalid, 7708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1015 Valid, 6693 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-12-13 15:57:44,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99804 states. [2022-12-13 15:57:44,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99804 to 76786. [2022-12-13 15:57:44,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76786 states, 76785 states have (on average 1.0868138308263333) internal successors, (83451), 76785 states have internal predecessors, (83451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:44,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76786 states to 76786 states and 83451 transitions. [2022-12-13 15:57:44,815 INFO L78 Accepts]: Start accepts. Automaton has 76786 states and 83451 transitions. Word has length 361 [2022-12-13 15:57:44,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:44,815 INFO L495 AbstractCegarLoop]: Abstraction has 76786 states and 83451 transitions. [2022-12-13 15:57:44,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:44,815 INFO L276 IsEmpty]: Start isEmpty. Operand 76786 states and 83451 transitions. [2022-12-13 15:57:44,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-12-13 15:57:44,820 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:44,820 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:57:44,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:57:44,821 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:44,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:44,821 INFO L85 PathProgramCache]: Analyzing trace with hash 976006743, now seen corresponding path program 1 times [2022-12-13 15:57:44,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:44,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179377680] [2022-12-13 15:57:44,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:44,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:45,045 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-12-13 15:57:45,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:45,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179377680] [2022-12-13 15:57:45,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179377680] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:45,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:45,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:57:45,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773862761] [2022-12-13 15:57:45,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:45,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:45,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:45,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:45,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:45,048 INFO L87 Difference]: Start difference. First operand 76786 states and 83451 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:49,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:49,015 INFO L93 Difference]: Finished difference Result 177191 states and 193935 transitions. [2022-12-13 15:57:49,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:49,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 374 [2022-12-13 15:57:49,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:49,111 INFO L225 Difference]: With dead ends: 177191 [2022-12-13 15:57:49,111 INFO L226 Difference]: Without dead ends: 101194 [2022-12-13 15:57:49,139 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 [2022-12-13 15:57:49,140 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 813 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 3350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:49,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 893 Invalid, 3350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 2418 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 15:57:49,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101194 states. [2022-12-13 15:57:49,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101194 to 99602. [2022-12-13 15:57:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99602 states, 99601 states have (on average 1.090099496993002) internal successors, (108575), 99601 states have internal predecessors, (108575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:50,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99602 states to 99602 states and 108575 transitions. [2022-12-13 15:57:50,135 INFO L78 Accepts]: Start accepts. Automaton has 99602 states and 108575 transitions. Word has length 374 [2022-12-13 15:57:50,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:50,136 INFO L495 AbstractCegarLoop]: Abstraction has 99602 states and 108575 transitions. [2022-12-13 15:57:50,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:50,136 INFO L276 IsEmpty]: Start isEmpty. Operand 99602 states and 108575 transitions. [2022-12-13 15:57:50,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-12-13 15:57:50,143 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:50,143 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:57:50,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 15:57:50,143 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:50,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:50,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1106420568, now seen corresponding path program 1 times [2022-12-13 15:57:50,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:50,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934637975] [2022-12-13 15:57:50,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:50,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:51,244 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 319 proven. 113 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-12-13 15:57:51,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:51,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934637975] [2022-12-13 15:57:51,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934637975] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:57:51,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924056105] [2022-12-13 15:57:51,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:51,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:57:51,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:57:51,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:57:51,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:57:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:51,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:57:51,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:57:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2022-12-13 15:57:51,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:57:51,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924056105] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:51,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:57:51,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-12-13 15:57:51,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215947925] [2022-12-13 15:57:51,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:51,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:51,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:51,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:51,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:57:51,458 INFO L87 Difference]: Start difference. First operand 99602 states and 108575 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:54,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:54,728 INFO L93 Difference]: Finished difference Result 199993 states and 217948 transitions. [2022-12-13 15:57:54,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:54,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 404 [2022-12-13 15:57:54,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:54,826 INFO L225 Difference]: With dead ends: 199993 [2022-12-13 15:57:54,826 INFO L226 Difference]: Without dead ends: 101180 [2022-12-13 15:57:54,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:57:54,856 INFO L413 NwaCegarLoop]: 1385 mSDtfsCounter, 1026 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:54,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1471 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 15:57:54,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101180 states. [2022-12-13 15:57:55,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101180 to 99594. [2022-12-13 15:57:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99594 states, 99593 states have (on average 1.0667014750032633) internal successors, (106236), 99593 states have internal predecessors, (106236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:55,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99594 states to 99594 states and 106236 transitions. [2022-12-13 15:57:55,872 INFO L78 Accepts]: Start accepts. Automaton has 99594 states and 106236 transitions. Word has length 404 [2022-12-13 15:57:55,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:55,873 INFO L495 AbstractCegarLoop]: Abstraction has 99594 states and 106236 transitions. [2022-12-13 15:57:55,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:55,873 INFO L276 IsEmpty]: Start isEmpty. Operand 99594 states and 106236 transitions. [2022-12-13 15:57:55,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-12-13 15:57:55,882 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:55,883 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:57:55,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:57:56,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 15:57:56,085 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:56,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:56,087 INFO L85 PathProgramCache]: Analyzing trace with hash -663684841, now seen corresponding path program 1 times [2022-12-13 15:57:56,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:56,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49322189] [2022-12-13 15:57:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:56,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-12-13 15:57:56,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:56,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49322189] [2022-12-13 15:57:56,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49322189] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:56,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:56,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:57:56,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843920159] [2022-12-13 15:57:56,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:56,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:56,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:56,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:56,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:56,489 INFO L87 Difference]: Start difference. First operand 99594 states and 106236 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:00,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:00,460 INFO L93 Difference]: Finished difference Result 223599 states and 239290 transitions. [2022-12-13 15:58:00,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:58:00,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 486 [2022-12-13 15:58:00,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:00,584 INFO L225 Difference]: With dead ends: 223599 [2022-12-13 15:58:00,584 INFO L226 Difference]: Without dead ends: 123220 [2022-12-13 15:58:00,627 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 [2022-12-13 15:58:00,627 INFO L413 NwaCegarLoop]: 1740 mSDtfsCounter, 703 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:00,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1883 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 15:58:00,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123220 states. [2022-12-13 15:58:01,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123220 to 123202. [2022-12-13 15:58:01,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123202 states, 123201 states have (on average 1.0590985462780333) internal successors, (130482), 123201 states have internal predecessors, (130482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:01,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123202 states to 123202 states and 130482 transitions. [2022-12-13 15:58:01,757 INFO L78 Accepts]: Start accepts. Automaton has 123202 states and 130482 transitions. Word has length 486 [2022-12-13 15:58:01,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:01,758 INFO L495 AbstractCegarLoop]: Abstraction has 123202 states and 130482 transitions. [2022-12-13 15:58:01,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:01,758 INFO L276 IsEmpty]: Start isEmpty. Operand 123202 states and 130482 transitions. [2022-12-13 15:58:01,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2022-12-13 15:58:01,767 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:01,767 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:58:01,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 15:58:01,767 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:01,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:01,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1195250089, now seen corresponding path program 1 times [2022-12-13 15:58:01,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:01,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464880954] [2022-12-13 15:58:01,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:01,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:02,854 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 262 proven. 110 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 15:58:02,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:02,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464880954] [2022-12-13 15:58:02,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464880954] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:58:02,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376733673] [2022-12-13 15:58:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:02,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:58:02,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:58:02,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:58:02,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:58:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:03,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:58:03,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:58:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-12-13 15:58:03,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:58:03,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376733673] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:03,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:58:03,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-13 15:58:03,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783362263] [2022-12-13 15:58:03,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:03,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:58:03,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:03,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:58:03,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:58:03,092 INFO L87 Difference]: Start difference. First operand 123202 states and 130482 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:07,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:58:09,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:09,606 INFO L93 Difference]: Finished difference Result 290560 states and 308246 transitions. [2022-12-13 15:58:09,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:58:09,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 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 509 [2022-12-13 15:58:09,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:09,777 INFO L225 Difference]: With dead ends: 290560 [2022-12-13 15:58:09,777 INFO L226 Difference]: Without dead ends: 168147 [2022-12-13 15:58:09,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:58:09,819 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1025 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2753 mSolverCounterSat, 931 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 3685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 931 IncrementalHoareTripleChecker+Valid, 2753 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:09,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 467 Invalid, 3685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [931 Valid, 2753 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-12-13 15:58:09,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168147 states. [2022-12-13 15:58:11,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168147 to 164920. [2022-12-13 15:58:11,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164920 states, 164919 states have (on average 1.0614301566223419) internal successors, (175050), 164919 states have internal predecessors, (175050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:11,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164920 states to 164920 states and 175050 transitions. [2022-12-13 15:58:11,357 INFO L78 Accepts]: Start accepts. Automaton has 164920 states and 175050 transitions. Word has length 509 [2022-12-13 15:58:11,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:11,358 INFO L495 AbstractCegarLoop]: Abstraction has 164920 states and 175050 transitions. [2022-12-13 15:58:11,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:11,358 INFO L276 IsEmpty]: Start isEmpty. Operand 164920 states and 175050 transitions. [2022-12-13 15:58:11,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2022-12-13 15:58:11,372 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:11,372 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:58:11,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:58:11,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 15:58:11,573 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:11,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:11,574 INFO L85 PathProgramCache]: Analyzing trace with hash -396042517, now seen corresponding path program 1 times [2022-12-13 15:58:11,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:11,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096973870] [2022-12-13 15:58:11,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:11,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 316 proven. 110 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 15:58:12,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:12,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096973870] [2022-12-13 15:58:12,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096973870] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:58:12,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843931059] [2022-12-13 15:58:12,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:12,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:58:12,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:58:12,694 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:58:12,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:58:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:12,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:58:12,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:58:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-12-13 15:58:13,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:58:13,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843931059] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:13,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:58:13,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-13 15:58:13,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956975907] [2022-12-13 15:58:13,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:13,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:58:13,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:13,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:58:13,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:58:13,880 INFO L87 Difference]: Start difference. First operand 164920 states and 175050 transitions. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 2 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:18,001 INFO L93 Difference]: Finished difference Result 317255 states and 337298 transitions. [2022-12-13 15:58:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:58:18,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 2 states have internal predecessors, (424), 0 states have call successors, (0), 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 557 [2022-12-13 15:58:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:18,165 INFO L225 Difference]: With dead ends: 317255 [2022-12-13 15:58:18,166 INFO L226 Difference]: Without dead ends: 169655 [2022-12-13 15:58:18,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:58:18,213 INFO L413 NwaCegarLoop]: 1016 mSDtfsCounter, 546 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:18,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1150 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 15:58:18,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169655 states. [2022-12-13 15:58:19,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169655 to 168858. [2022-12-13 15:58:19,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168858 states, 168857 states have (on average 1.0564323658480252) internal successors, (178386), 168857 states have internal predecessors, (178386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:19,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168858 states to 168858 states and 178386 transitions. [2022-12-13 15:58:19,895 INFO L78 Accepts]: Start accepts. Automaton has 168858 states and 178386 transitions. Word has length 557 [2022-12-13 15:58:19,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:19,895 INFO L495 AbstractCegarLoop]: Abstraction has 168858 states and 178386 transitions. [2022-12-13 15:58:19,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 2 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:19,895 INFO L276 IsEmpty]: Start isEmpty. Operand 168858 states and 178386 transitions. [2022-12-13 15:58:19,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2022-12-13 15:58:19,905 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:19,905 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:58:19,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 15:58:20,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 15:58:20,107 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:20,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:20,109 INFO L85 PathProgramCache]: Analyzing trace with hash 291527895, now seen corresponding path program 1 times [2022-12-13 15:58:20,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:20,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67923601] [2022-12-13 15:58:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:20,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2022-12-13 15:58:20,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:20,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67923601] [2022-12-13 15:58:20,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67923601] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:20,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:20,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:58:20,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603408133] [2022-12-13 15:58:20,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:20,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:58:20,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:20,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:58:20,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:20,346 INFO L87 Difference]: Start difference. First operand 168858 states and 178386 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:22,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:22,738 INFO L93 Difference]: Finished difference Result 318803 states and 337474 transitions. [2022-12-13 15:58:22,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:58:22,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 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 576 [2022-12-13 15:58:22,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:22,984 INFO L225 Difference]: With dead ends: 318803 [2022-12-13 15:58:22,985 INFO L226 Difference]: Without dead ends: 168842 [2022-12-13 15:58:23,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:23,033 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 1600 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:23,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1600 Valid, 290 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 15:58:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168842 states. [2022-12-13 15:58:24,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168842 to 168841. [2022-12-13 15:58:24,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168841 states, 168840 states have (on average 1.0563255152807391) internal successors, (178350), 168840 states have internal predecessors, (178350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:24,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168841 states to 168841 states and 178350 transitions. [2022-12-13 15:58:24,862 INFO L78 Accepts]: Start accepts. Automaton has 168841 states and 178350 transitions. Word has length 576 [2022-12-13 15:58:24,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:24,863 INFO L495 AbstractCegarLoop]: Abstraction has 168841 states and 178350 transitions. [2022-12-13 15:58:24,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:24,863 INFO L276 IsEmpty]: Start isEmpty. Operand 168841 states and 178350 transitions. [2022-12-13 15:58:24,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2022-12-13 15:58:24,874 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:24,874 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:58:24,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 15:58:24,875 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:24,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:24,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1659701664, now seen corresponding path program 1 times [2022-12-13 15:58:24,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:24,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26345547] [2022-12-13 15:58:24,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:24,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:25,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 471 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2022-12-13 15:58:25,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:25,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26345547] [2022-12-13 15:58:25,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26345547] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:25,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:25,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:58:25,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403649619] [2022-12-13 15:58:25,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:25,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:58:25,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:25,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:58:25,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:25,444 INFO L87 Difference]: Start difference. First operand 168841 states and 178350 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:29,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:29,176 INFO L93 Difference]: Finished difference Result 330601 states and 349352 transitions. [2022-12-13 15:58:29,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:58:29,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 581 [2022-12-13 15:58:29,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:29,354 INFO L225 Difference]: With dead ends: 330601 [2022-12-13 15:58:29,354 INFO L226 Difference]: Without dead ends: 162549 [2022-12-13 15:58:29,407 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 [2022-12-13 15:58:29,407 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 730 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2398 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 2802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:29,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1763 Invalid, 2802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2398 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 15:58:29,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162549 states. [2022-12-13 15:58:30,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162549 to 158604. [2022-12-13 15:58:30,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158604 states, 158603 states have (on average 1.0459827367704269) internal successors, (165896), 158603 states have internal predecessors, (165896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:31,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158604 states to 158604 states and 165896 transitions. [2022-12-13 15:58:31,236 INFO L78 Accepts]: Start accepts. Automaton has 158604 states and 165896 transitions. Word has length 581 [2022-12-13 15:58:31,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:31,236 INFO L495 AbstractCegarLoop]: Abstraction has 158604 states and 165896 transitions. [2022-12-13 15:58:31,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:31,236 INFO L276 IsEmpty]: Start isEmpty. Operand 158604 states and 165896 transitions. [2022-12-13 15:58:31,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2022-12-13 15:58:31,246 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:31,247 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:58:31,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 15:58:31,247 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:31,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:31,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2053964548, now seen corresponding path program 1 times [2022-12-13 15:58:31,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:31,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747991180] [2022-12-13 15:58:31,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:31,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:31,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 982 trivial. 0 not checked. [2022-12-13 15:58:31,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:31,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747991180] [2022-12-13 15:58:31,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747991180] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:31,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:31,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:58:31,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960293504] [2022-12-13 15:58:31,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:31,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:58:31,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:31,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:58:31,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:31,456 INFO L87 Difference]: Start difference. First operand 158604 states and 165896 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:35,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:35,666 INFO L93 Difference]: Finished difference Result 364419 states and 381941 transitions. [2022-12-13 15:58:35,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:58:35,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 590 [2022-12-13 15:58:35,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:35,958 INFO L225 Difference]: With dead ends: 364419 [2022-12-13 15:58:35,958 INFO L226 Difference]: Without dead ends: 218416 [2022-12-13 15:58:36,012 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 [2022-12-13 15:58:36,012 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 993 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 3255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:36,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 558 Invalid, 3255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 15:58:36,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218416 states. [2022-12-13 15:58:37,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218416 to 192442. [2022-12-13 15:58:37,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192442 states, 192441 states have (on average 1.0420336622653177) internal successors, (200530), 192441 states have internal predecessors, (200530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:38,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192442 states to 192442 states and 200530 transitions. [2022-12-13 15:58:38,140 INFO L78 Accepts]: Start accepts. Automaton has 192442 states and 200530 transitions. Word has length 590 [2022-12-13 15:58:38,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:38,141 INFO L495 AbstractCegarLoop]: Abstraction has 192442 states and 200530 transitions. [2022-12-13 15:58:38,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:38,141 INFO L276 IsEmpty]: Start isEmpty. Operand 192442 states and 200530 transitions. [2022-12-13 15:58:38,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2022-12-13 15:58:38,174 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:38,174 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:58:38,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 15:58:38,174 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:38,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:38,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1737443257, now seen corresponding path program 1 times [2022-12-13 15:58:38,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:38,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84875520] [2022-12-13 15:58:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:38,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 471 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2022-12-13 15:58:39,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:39,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84875520] [2022-12-13 15:58:39,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84875520] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:39,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:39,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:58:39,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562677266] [2022-12-13 15:58:39,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:39,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:58:39,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:39,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:58:39,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:39,219 INFO L87 Difference]: Start difference. First operand 192442 states and 200530 transitions. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:43,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:43,319 INFO L93 Difference]: Finished difference Result 375408 states and 391698 transitions. [2022-12-13 15:58:43,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:58:43,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 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 812 [2022-12-13 15:58:43,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:43,534 INFO L225 Difference]: With dead ends: 375408 [2022-12-13 15:58:43,534 INFO L226 Difference]: Without dead ends: 195566 [2022-12-13 15:58:43,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:43,604 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 901 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 675 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 675 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:43,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 355 Invalid, 2880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [675 Valid, 2205 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 15:58:43,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195566 states. [2022-12-13 15:58:45,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195566 to 193992. [2022-12-13 15:58:45,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193992 states, 193991 states have (on average 1.039965771607961) internal successors, (201744), 193991 states have internal predecessors, (201744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:45,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193992 states to 193992 states and 201744 transitions. [2022-12-13 15:58:45,622 INFO L78 Accepts]: Start accepts. Automaton has 193992 states and 201744 transitions. Word has length 812 [2022-12-13 15:58:45,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:45,622 INFO L495 AbstractCegarLoop]: Abstraction has 193992 states and 201744 transitions. [2022-12-13 15:58:45,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:45,623 INFO L276 IsEmpty]: Start isEmpty. Operand 193992 states and 201744 transitions. [2022-12-13 15:58:45,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2022-12-13 15:58:45,668 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:45,669 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:58:45,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 15:58:45,669 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:45,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:45,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2132282626, now seen corresponding path program 1 times [2022-12-13 15:58:45,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:45,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112509721] [2022-12-13 15:58:45,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:45,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:47,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 829 proven. 351 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-12-13 15:58:47,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:47,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112509721] [2022-12-13 15:58:47,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112509721] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:58:47,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655635404] [2022-12-13 15:58:47,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:47,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:58:47,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:58:47,328 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:58:47,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:58:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:47,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 1189 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:58:47,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:58:47,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 831 proven. 0 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2022-12-13 15:58:47,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:58:47,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655635404] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:47,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:58:47,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-13 15:58:47,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623918005] [2022-12-13 15:58:47,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:47,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:58:47,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:47,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:58:47,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:58:47,803 INFO L87 Difference]: Start difference. First operand 193992 states and 201744 transitions. Second operand has 4 states, 4 states have (on average 154.25) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:54,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:54,296 INFO L93 Difference]: Finished difference Result 432978 states and 450302 transitions. [2022-12-13 15:58:54,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:58:54,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 154.25) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 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 945 [2022-12-13 15:58:54,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:54,572 INFO L225 Difference]: With dead ends: 432978 [2022-12-13 15:58:54,573 INFO L226 Difference]: Without dead ends: 239775 [2022-12-13 15:58:54,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 943 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:58:54,645 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 1648 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 5511 mSolverCounterSat, 676 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 6187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 676 IncrementalHoareTripleChecker+Valid, 5511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:54,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 755 Invalid, 6187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [676 Valid, 5511 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-12-13 15:58:54,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239775 states. [2022-12-13 15:58:56,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239775 to 235738. [2022-12-13 15:58:56,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235738 states, 235737 states have (on average 1.0397943470901896) internal successors, (245118), 235737 states have internal predecessors, (245118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:57,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235738 states to 235738 states and 245118 transitions. [2022-12-13 15:58:57,069 INFO L78 Accepts]: Start accepts. Automaton has 235738 states and 245118 transitions. Word has length 945 [2022-12-13 15:58:57,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:57,069 INFO L495 AbstractCegarLoop]: Abstraction has 235738 states and 245118 transitions. [2022-12-13 15:58:57,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.25) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:58:57,069 INFO L276 IsEmpty]: Start isEmpty. Operand 235738 states and 245118 transitions. [2022-12-13 15:58:57,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1100 [2022-12-13 15:58:57,248 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:57,249 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:58:57,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 15:58:57,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 15:58:57,451 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:57,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:57,452 INFO L85 PathProgramCache]: Analyzing trace with hash 379030924, now seen corresponding path program 1 times [2022-12-13 15:58:57,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:57,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985997252] [2022-12-13 15:58:57,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:57,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:59,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 790 proven. 356 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-12-13 15:58:59,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:59,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985997252] [2022-12-13 15:58:59,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985997252] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:58:59,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725226883] [2022-12-13 15:58:59,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:59,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:58:59,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:58:59,263 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:58:59,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 15:58:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:59,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 15:58:59,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:59:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 957 proven. 190 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-12-13 15:59:00,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:59:00,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 1056 proven. 91 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-12-13 15:59:00,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725226883] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:59:00,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:59:00,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-12-13 15:59:00,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993563958] [2022-12-13 15:59:00,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:59:00,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 15:59:00,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:59:00,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 15:59:00,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:59:00,864 INFO L87 Difference]: Start difference. First operand 235738 states and 245118 transitions. Second operand has 10 states, 10 states have (on average 213.7) internal successors, (2137), 10 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:59:40,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 15:59:45,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:59:45,991 INFO L93 Difference]: Finished difference Result 741813 states and 772503 transitions. [2022-12-13 15:59:45,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-13 15:59:45,992 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 213.7) internal successors, (2137), 10 states have internal predecessors, (2137), 0 states have call successors, (0), 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 1099 [2022-12-13 15:59:45,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:59:46,569 INFO L225 Difference]: With dead ends: 741813 [2022-12-13 15:59:46,570 INFO L226 Difference]: Without dead ends: 496631 [2022-12-13 15:59:46,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2270 GetRequests, 2227 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=439, Invalid=1541, Unknown=0, NotChecked=0, Total=1980 [2022-12-13 15:59:46,667 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 40625 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 41027 mSolverCounterSat, 11286 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40625 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 52314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11286 IncrementalHoareTripleChecker+Valid, 41027 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.5s IncrementalHoareTripleChecker+Time [2022-12-13 15:59:46,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40625 Valid, 1134 Invalid, 52314 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11286 Valid, 41027 Invalid, 1 Unknown, 0 Unchecked, 41.5s Time] [2022-12-13 15:59:47,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496631 states. [2022-12-13 15:59:51,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496631 to 425523. [2022-12-13 15:59:51,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425523 states, 425522 states have (on average 1.0321346487373155) internal successors, (439196), 425522 states have internal predecessors, (439196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:59:51,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425523 states to 425523 states and 439196 transitions. [2022-12-13 15:59:51,656 INFO L78 Accepts]: Start accepts. Automaton has 425523 states and 439196 transitions. Word has length 1099 [2022-12-13 15:59:51,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:59:51,656 INFO L495 AbstractCegarLoop]: Abstraction has 425523 states and 439196 transitions. [2022-12-13 15:59:51,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 213.7) internal successors, (2137), 10 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:59:51,657 INFO L276 IsEmpty]: Start isEmpty. Operand 425523 states and 439196 transitions. [2022-12-13 15:59:51,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1230 [2022-12-13 15:59:51,722 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:59:51,722 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:59:51,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 15:59:51,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 15:59:51,924 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:59:51,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:59:51,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1413072694, now seen corresponding path program 1 times [2022-12-13 15:59:51,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:59:51,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690620907] [2022-12-13 15:59:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:59:51,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:59:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:59:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1793 backedges. 1113 proven. 351 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2022-12-13 15:59:53,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:59:53,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690620907] [2022-12-13 15:59:53,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690620907] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:59:53,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588225140] [2022-12-13 15:59:53,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:59:53,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:59:53,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:59:53,765 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:59:53,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 15:59:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:59:54,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 1480 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:59:54,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:59:54,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1793 backedges. 1365 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2022-12-13 15:59:54,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:59:54,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588225140] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:59:54,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:59:54,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-12-13 15:59:54,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789462354] [2022-12-13 15:59:54,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:59:54,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:59:54,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:59:54,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:59:54,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:59:54,740 INFO L87 Difference]: Start difference. First operand 425523 states and 439196 transitions. Second operand has 4 states, 4 states have (on average 226.0) internal successors, (904), 3 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:02,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:02,605 INFO L93 Difference]: Finished difference Result 927438 states and 957742 transitions. [2022-12-13 16:00:02,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:00:02,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 226.0) internal successors, (904), 3 states have internal predecessors, (904), 0 states have call successors, (0), 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 1229 [2022-12-13 16:00:02,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:03,273 INFO L225 Difference]: With dead ends: 927438 [2022-12-13 16:00:03,273 INFO L226 Difference]: Without dead ends: 516099 [2022-12-13 16:00:03,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1232 GetRequests, 1229 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:00:03,629 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 1339 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 4798 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 5379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 4798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:03,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 691 Invalid, 5379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 4798 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-12-13 16:00:03,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516099 states. [2022-12-13 16:00:08,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516099 to 491649. [2022-12-13 16:00:08,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491649 states, 491648 states have (on average 1.0311727089299663) internal successors, (506974), 491648 states have internal predecessors, (506974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:09,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491649 states to 491649 states and 506974 transitions. [2022-12-13 16:00:09,261 INFO L78 Accepts]: Start accepts. Automaton has 491649 states and 506974 transitions. Word has length 1229 [2022-12-13 16:00:09,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:09,262 INFO L495 AbstractCegarLoop]: Abstraction has 491649 states and 506974 transitions. [2022-12-13 16:00:09,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 226.0) internal successors, (904), 3 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:09,262 INFO L276 IsEmpty]: Start isEmpty. Operand 491649 states and 506974 transitions. [2022-12-13 16:00:09,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1258 [2022-12-13 16:00:09,334 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:09,334 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:00:09,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 16:00:09,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ea7f135-ea58-4f61-aa69-0b5bda0e2c4f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 16:00:09,536 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:09,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:09,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1370362374, now seen corresponding path program 1 times [2022-12-13 16:00:09,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:09,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405973826] [2022-12-13 16:00:09,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:09,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:11,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 1766 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-12-13 16:00:11,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:11,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405973826] [2022-12-13 16:00:11,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405973826] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:11,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:11,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 16:00:11,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95313185] [2022-12-13 16:00:11,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:11,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:00:11,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:00:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:00:11,992 INFO L87 Difference]: Start difference. First operand 491649 states and 506974 transitions. Second operand has 6 states, 6 states have (on average 192.16666666666666) internal successors, (1153), 6 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:24,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:24,187 INFO L93 Difference]: Finished difference Result 1106941 states and 1141599 transitions. [2022-12-13 16:00:24,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:00:24,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 192.16666666666666) internal successors, (1153), 6 states have internal predecessors, (1153), 0 states have call successors, (0), 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 1257 [2022-12-13 16:00:24,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:25,017 INFO L225 Difference]: With dead ends: 1106941 [2022-12-13 16:00:25,017 INFO L226 Difference]: Without dead ends: 630263 [2022-12-13 16:00:25,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:00:25,147 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 3251 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 13133 mSolverCounterSat, 1489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3251 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 14622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1489 IncrementalHoareTripleChecker+Valid, 13133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:25,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3251 Valid, 1039 Invalid, 14622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1489 Valid, 13133 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-12-13 16:00:25,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630263 states. [2022-12-13 16:00:31,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630263 to 583787. [2022-12-13 16:00:31,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583787 states, 583786 states have (on average 1.028066791598291) internal successors, (600171), 583786 states have internal predecessors, (600171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:32,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583787 states to 583787 states and 600171 transitions. [2022-12-13 16:00:32,111 INFO L78 Accepts]: Start accepts. Automaton has 583787 states and 600171 transitions. Word has length 1257 [2022-12-13 16:00:32,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:32,112 INFO L495 AbstractCegarLoop]: Abstraction has 583787 states and 600171 transitions. [2022-12-13 16:00:32,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.16666666666666) internal successors, (1153), 6 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:32,112 INFO L276 IsEmpty]: Start isEmpty. Operand 583787 states and 600171 transitions. [2022-12-13 16:00:32,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1400 [2022-12-13 16:00:32,235 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:32,235 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:00:32,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 16:00:32,236 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:32,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:32,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1811724957, now seen corresponding path program 1 times [2022-12-13 16:00:32,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:32,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473317255] [2022-12-13 16:00:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:32,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1732 backedges. 1526 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-12-13 16:00:33,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:33,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473317255] [2022-12-13 16:00:33,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473317255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:33,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:33,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:00:33,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714427611] [2022-12-13 16:00:33,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:33,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:00:33,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:33,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:00:33,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:00:33,649 INFO L87 Difference]: Start difference. First operand 583787 states and 600171 transitions. Second operand has 3 states, 3 states have (on average 402.3333333333333) internal successors, (1207), 3 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:39,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:39,758 INFO L93 Difference]: Finished difference Result 1150258 states and 1182724 transitions. [2022-12-13 16:00:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:00:39,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 402.3333333333333) internal successors, (1207), 3 states have internal predecessors, (1207), 0 states have call successors, (0), 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 1399 [2022-12-13 16:00:39,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:40,575 INFO L225 Difference]: With dead ends: 1150258 [2022-12-13 16:00:40,575 INFO L226 Difference]: Without dead ends: 583018 [2022-12-13 16:00:40,714 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 [2022-12-13 16:00:40,714 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 417 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:40,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1711 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2404 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 16:00:41,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583018 states. [2022-12-13 16:00:46,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583018 to 570406. [2022-12-13 16:00:46,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570406 states, 570405 states have (on average 1.0264180713703421) internal successors, (585474), 570405 states have internal predecessors, (585474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:47,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570406 states to 570406 states and 585474 transitions. [2022-12-13 16:00:47,484 INFO L78 Accepts]: Start accepts. Automaton has 570406 states and 585474 transitions. Word has length 1399 [2022-12-13 16:00:47,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:47,485 INFO L495 AbstractCegarLoop]: Abstraction has 570406 states and 585474 transitions. [2022-12-13 16:00:47,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 402.3333333333333) internal successors, (1207), 3 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:47,485 INFO L276 IsEmpty]: Start isEmpty. Operand 570406 states and 585474 transitions. [2022-12-13 16:00:47,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1451 [2022-12-13 16:00:47,612 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:47,612 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:00:47,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 16:00:47,612 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:47,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:47,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1527892860, now seen corresponding path program 1 times [2022-12-13 16:00:47,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:47,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309379063] [2022-12-13 16:00:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:47,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1901 backedges. 1335 proven. 0 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2022-12-13 16:00:49,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:49,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309379063] [2022-12-13 16:00:49,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309379063] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:49,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:49,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:00:49,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671884526] [2022-12-13 16:00:49,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:49,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:00:49,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:49,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:00:49,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:00:49,166 INFO L87 Difference]: Start difference. First operand 570406 states and 585474 transitions. Second operand has 4 states, 4 states have (on average 243.75) internal successors, (975), 3 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:57,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:57,411 INFO L93 Difference]: Finished difference Result 1199079 states and 1231341 transitions. [2022-12-13 16:00:57,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:00:57,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 243.75) internal successors, (975), 3 states have internal predecessors, (975), 0 states have call successors, (0), 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 1450 [2022-12-13 16:00:57,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:58,208 INFO L225 Difference]: With dead ends: 1199079 [2022-12-13 16:00:58,208 INFO L226 Difference]: Without dead ends: 648371 [2022-12-13 16:00:58,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:00:58,368 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 1312 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 4677 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 5296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 4677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:58,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 720 Invalid, 5296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 4677 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-12-13 16:00:59,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648371 states. [2022-12-13 16:01:04,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648371 to 631821. [2022-12-13 16:01:05,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631821 states, 631820 states have (on average 1.0262606438542623) internal successors, (648412), 631820 states have internal predecessors, (648412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:01:06,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631821 states to 631821 states and 648412 transitions. [2022-12-13 16:01:06,051 INFO L78 Accepts]: Start accepts. Automaton has 631821 states and 648412 transitions. Word has length 1450 [2022-12-13 16:01:06,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:01:06,052 INFO L495 AbstractCegarLoop]: Abstraction has 631821 states and 648412 transitions. [2022-12-13 16:01:06,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.75) internal successors, (975), 3 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:01:06,052 INFO L276 IsEmpty]: Start isEmpty. Operand 631821 states and 648412 transitions. [2022-12-13 16:01:06,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1476 [2022-12-13 16:01:06,387 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:01:06,388 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:01:06,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 16:01:06,388 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:01:06,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:01:06,388 INFO L85 PathProgramCache]: Analyzing trace with hash 303678571, now seen corresponding path program 1 times [2022-12-13 16:01:06,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:01:06,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431514741] [2022-12-13 16:01:06,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:06,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:01:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:07,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2447 backedges. 1716 proven. 0 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2022-12-13 16:01:07,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:01:07,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431514741] [2022-12-13 16:01:07,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431514741] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:01:07,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:01:07,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:01:07,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552658111] [2022-12-13 16:01:07,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:01:07,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:01:07,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:01:07,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:01:07,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:01:07,581 INFO L87 Difference]: Start difference. First operand 631821 states and 648412 transitions. Second operand has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:01:18,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:01:18,326 INFO L93 Difference]: Finished difference Result 1394468 states and 1430970 transitions. [2022-12-13 16:01:18,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:01:18,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 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 1475 [2022-12-13 16:01:18,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:01:19,347 INFO L225 Difference]: With dead ends: 1394468 [2022-12-13 16:01:19,347 INFO L226 Difference]: Without dead ends: 763436 [2022-12-13 16:01:19,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:01:19,741 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 1686 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 5912 mSolverCounterSat, 898 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1686 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 6810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 5912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-12-13 16:01:19,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1686 Valid, 823 Invalid, 6810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [898 Valid, 5912 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-12-13 16:01:20,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763436 states. [2022-12-13 16:01:27,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763436 to 697142. [2022-12-13 16:01:27,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697142 states, 697141 states have (on average 1.0247008854736703) internal successors, (714361), 697141 states have internal predecessors, (714361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:01:28,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697142 states to 697142 states and 714361 transitions. [2022-12-13 16:01:28,456 INFO L78 Accepts]: Start accepts. Automaton has 697142 states and 714361 transitions. Word has length 1475 [2022-12-13 16:01:28,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:01:28,457 INFO L495 AbstractCegarLoop]: Abstraction has 697142 states and 714361 transitions. [2022-12-13 16:01:28,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:01:28,457 INFO L276 IsEmpty]: Start isEmpty. Operand 697142 states and 714361 transitions. [2022-12-13 16:01:28,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1489 [2022-12-13 16:01:28,703 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:01:28,703 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:01:28,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 16:01:28,704 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:01:28,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:01:28,704 INFO L85 PathProgramCache]: Analyzing trace with hash -559745925, now seen corresponding path program 1 times [2022-12-13 16:01:28,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:01:28,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712314668] [2022-12-13 16:01:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:28,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:01:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2643 backedges. 2002 proven. 0 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2022-12-13 16:01:30,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:01:30,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712314668] [2022-12-13 16:01:30,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712314668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:01:30,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:01:30,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:01:30,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255770769] [2022-12-13 16:01:30,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:01:30,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:01:30,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:01:30,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:01:30,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:01:30,273 INFO L87 Difference]: Start difference. First operand 697142 states and 714361 transitions. Second operand has 3 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:01:36,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:01:36,695 INFO L93 Difference]: Finished difference Result 1349414 states and 1382645 transitions. [2022-12-13 16:01:36,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:01:36,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 0 states have call successors, (0), 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 1488 [2022-12-13 16:01:36,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:01:37,449 INFO L225 Difference]: With dead ends: 1349414 [2022-12-13 16:01:37,449 INFO L226 Difference]: Without dead ends: 649912 [2022-12-13 16:01:37,629 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 [2022-12-13 16:01:37,630 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 611 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 2596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:01:37,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 1686 Invalid, 2596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 16:01:38,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649912 states. [2022-12-13 16:01:44,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649912 to 610510. [2022-12-13 16:01:44,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610510 states, 610509 states have (on average 1.0214525911984917) internal successors, (623606), 610509 states have internal predecessors, (623606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:01:45,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610510 states to 610510 states and 623606 transitions. [2022-12-13 16:01:45,207 INFO L78 Accepts]: Start accepts. Automaton has 610510 states and 623606 transitions. Word has length 1488 [2022-12-13 16:01:45,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:01:45,208 INFO L495 AbstractCegarLoop]: Abstraction has 610510 states and 623606 transitions. [2022-12-13 16:01:45,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:01:45,208 INFO L276 IsEmpty]: Start isEmpty. Operand 610510 states and 623606 transitions. [2022-12-13 16:01:45,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1578 [2022-12-13 16:01:45,352 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:01:45,352 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:01:45,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 16:01:45,352 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:01:45,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:01:45,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1371728331, now seen corresponding path program 1 times [2022-12-13 16:01:45,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:01:45,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070875468] [2022-12-13 16:01:45,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:45,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:01:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2868 backedges. 2230 proven. 0 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2022-12-13 16:01:47,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:01:47,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070875468] [2022-12-13 16:01:47,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070875468] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:01:47,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:01:47,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:01:47,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419177207] [2022-12-13 16:01:47,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:01:47,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:01:47,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:01:47,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:01:47,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:01:47,273 INFO L87 Difference]: Start difference. First operand 610510 states and 623606 transitions. Second operand has 4 states, 4 states have (on average 262.25) internal successors, (1049), 4 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:01:56,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:01:56,516 INFO L93 Difference]: Finished difference Result 1211569 states and 1237681 transitions. [2022-12-13 16:01:56,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:01:56,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 262.25) internal successors, (1049), 4 states have internal predecessors, (1049), 0 states have call successors, (0), 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 1577 [2022-12-13 16:01:56,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:01:57,288 INFO L225 Difference]: With dead ends: 1211569 [2022-12-13 16:01:57,288 INFO L226 Difference]: Without dead ends: 626257