./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label48.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6abe6deda42e5cd6457f2c2e337625778fbe4d0886f20421ed4af9df8a9f44a2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 03:48:54,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:48:54,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:48:54,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:48:54,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:48:54,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:48:54,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:48:54,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:48:54,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:48:54,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:48:54,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:48:54,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:48:54,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:48:54,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:48:54,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:48:54,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:48:54,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:48:54,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:48:54,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:48:54,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:48:54,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:48:54,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:48:54,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:48:54,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:48:54,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:48:54,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:48:54,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:48:54,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:48:55,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:48:55,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:48:55,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:48:55,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:48:55,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:48:55,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:48:55,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:48:55,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:48:55,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:48:55,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:48:55,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:48:55,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:48:55,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:48:55,013 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:48:55,076 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:48:55,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:48:55,077 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:48:55,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:48:55,078 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:48:55,078 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:48:55,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:48:55,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:48:55,079 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:48:55,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:48:55,081 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:48:55,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:48:55,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:48:55,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:48:55,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:48:55,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:48:55,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:48:55,082 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:48:55,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:48:55,083 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:48:55,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:48:55,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:48:55,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:48:55,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:48:55,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:48:55,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:48:55,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:48:55,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:48:55,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:48:55,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:48:55,088 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:48:55,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:48:55,089 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:48:55,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:48:55,089 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_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6abe6deda42e5cd6457f2c2e337625778fbe4d0886f20421ed4af9df8a9f44a2 [2022-11-23 03:48:55,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:48:55,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:48:55,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:48:55,446 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:48:55,447 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:48:55,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/eca-rers2012/Problem12_label48.c [2022-11-23 03:48:58,506 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:48:59,095 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:48:59,095 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/sv-benchmarks/c/eca-rers2012/Problem12_label48.c [2022-11-23 03:48:59,133 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/data/03982e599/b157dc520ad24409b24694f11525a24a/FLAG107fe770b [2022-11-23 03:48:59,151 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/data/03982e599/b157dc520ad24409b24694f11525a24a [2022-11-23 03:48:59,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:48:59,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:48:59,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:48:59,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:48:59,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:48:59,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:48:59" (1/1) ... [2022-11-23 03:48:59,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260752d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:59, skipping insertion in model container [2022-11-23 03:48:59,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:48:59" (1/1) ... [2022-11-23 03:48:59,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:48:59,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:48:59,655 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_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/sv-benchmarks/c/eca-rers2012/Problem12_label48.c[1668,1681] [2022-11-23 03:49:00,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:49:00,812 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:49:00,836 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_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/sv-benchmarks/c/eca-rers2012/Problem12_label48.c[1668,1681] [2022-11-23 03:49:01,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:49:01,473 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:49:01,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:49:01 WrapperNode [2022-11-23 03:49:01,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:49:01,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:49:01,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:49:01,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:49:01,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:49:01" (1/1) ... [2022-11-23 03:49:01,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:49:01" (1/1) ... [2022-11-23 03:49:01,924 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-11-23 03:49:01,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:49:01,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:49:01,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:49:01,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:49:01,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:49:01" (1/1) ... [2022-11-23 03:49:01,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:49:01" (1/1) ... [2022-11-23 03:49:02,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:49:01" (1/1) ... [2022-11-23 03:49:02,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:49:01" (1/1) ... [2022-11-23 03:49:02,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:49:01" (1/1) ... [2022-11-23 03:49:02,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:49:01" (1/1) ... [2022-11-23 03:49:02,352 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:49:01" (1/1) ... [2022-11-23 03:49:02,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:49:01" (1/1) ... [2022-11-23 03:49:02,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:49:02,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:49:02,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:49:02,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:49:02,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:49:01" (1/1) ... [2022-11-23 03:49:02,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:49:02,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:49:02,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:49:02,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:49:02,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:49:02,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:49:02,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:49:02,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:49:02,666 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:49:02,668 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:49:08,246 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:49:08,276 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:49:08,279 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 03:49:08,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:49:08 BoogieIcfgContainer [2022-11-23 03:49:08,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:49:08,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:49:08,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:49:08,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:49:08,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:48:59" (1/3) ... [2022-11-23 03:49:08,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee7b2fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:49:08, skipping insertion in model container [2022-11-23 03:49:08,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:49:01" (2/3) ... [2022-11-23 03:49:08,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee7b2fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:49:08, skipping insertion in model container [2022-11-23 03:49:08,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:49:08" (3/3) ... [2022-11-23 03:49:08,297 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label48.c [2022-11-23 03:49:08,321 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:49:08,321 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:49:08,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:49:08,434 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;@5834e5d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:49:08,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 03:49:08,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:08,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 03:49:08,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:49:08,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:49:08,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:49:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:49:08,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1417350502, now seen corresponding path program 1 times [2022-11-23 03:49:08,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:49:08,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245859458] [2022-11-23 03:49:08,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:08,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:49:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:49:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:49:08,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:08,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245859458] [2022-11-23 03:49:08,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245859458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:49:08,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:49:08,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:49:08,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057033413] [2022-11-23 03:49:08,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:49:08,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:49:08,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:08,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:49:08,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:49:08,789 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 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 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:13,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:49:13,926 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-11-23 03:49:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:49:13,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-11-23 03:49:13,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:49:13,950 INFO L225 Difference]: With dead ends: 2388 [2022-11-23 03:49:13,951 INFO L226 Difference]: Without dead ends: 1506 [2022-11-23 03:49:13,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:49:13,961 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 824 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-23 03:49:13,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 481 Invalid, 2985 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-23 03:49:13,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-11-23 03:49:14,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-11-23 03:49:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6385382059800664) internal successors, (2466), 1505 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2466 transitions. [2022-11-23 03:49:14,070 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2466 transitions. Word has length 10 [2022-11-23 03:49:14,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:49:14,071 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2466 transitions. [2022-11-23 03:49:14,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:14,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2466 transitions. [2022-11-23 03:49:14,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-23 03:49:14,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:49:14,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:49:14,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:49:14,075 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:49:14,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:49:14,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1004872137, now seen corresponding path program 1 times [2022-11-23 03:49:14,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:49:14,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028034241] [2022-11-23 03:49:14,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:14,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:49:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:49:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:49:14,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:14,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028034241] [2022-11-23 03:49:14,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028034241] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:49:14,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195353445] [2022-11-23 03:49:14,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:14,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:14,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:49:14,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:49:14,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:49:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:49:14,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 03:49:14,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:49:14,823 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:49:14,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:49:14,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195353445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:49:14,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:49:14,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-23 03:49:14,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853277028] [2022-11-23 03:49:14,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:49:14,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:49:14,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:14,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:49:14,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:49:14,827 INFO L87 Difference]: Start difference. First operand 1506 states and 2466 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:19,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:49:19,662 INFO L93 Difference]: Finished difference Result 4512 states and 7393 transitions. [2022-11-23 03:49:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:49:19,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-23 03:49:19,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:49:19,676 INFO L225 Difference]: With dead ends: 4512 [2022-11-23 03:49:19,676 INFO L226 Difference]: Without dead ends: 3008 [2022-11-23 03:49:19,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:49:19,681 INFO L413 NwaCegarLoop]: 1383 mSDtfsCounter, 769 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:49:19,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1391 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-23 03:49:19,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2022-11-23 03:49:19,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2022-11-23 03:49:19,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.3634852011972065) internal successors, (4100), 3007 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4100 transitions. [2022-11-23 03:49:19,754 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4100 transitions. Word has length 81 [2022-11-23 03:49:19,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:49:19,755 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4100 transitions. [2022-11-23 03:49:19,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:19,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4100 transitions. [2022-11-23 03:49:19,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-23 03:49:19,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:49:19,758 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:49:19,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 03:49:19,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:19,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:49:19,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:49:19,965 INFO L85 PathProgramCache]: Analyzing trace with hash -2017229475, now seen corresponding path program 1 times [2022-11-23 03:49:19,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:49:19,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860224122] [2022-11-23 03:49:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:19,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:49:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:49:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:49:20,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:20,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860224122] [2022-11-23 03:49:20,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860224122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:49:20,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:49:20,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:49:20,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358436007] [2022-11-23 03:49:20,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:49:20,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:49:20,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:20,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:49:20,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:49:20,189 INFO L87 Difference]: Start difference. First operand 3008 states and 4100 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) [2022-11-23 03:49:24,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:49:24,482 INFO L93 Difference]: Finished difference Result 7516 states and 10661 transitions. [2022-11-23 03:49:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:49:24,483 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 [2022-11-23 03:49:24,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:49:24,499 INFO L225 Difference]: With dead ends: 7516 [2022-11-23 03:49:24,499 INFO L226 Difference]: Without dead ends: 4510 [2022-11-23 03:49:24,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:49:24,507 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 748 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2016 mSolverCounterSat, 910 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 2926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 910 IncrementalHoareTripleChecker+Valid, 2016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:49:24,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 520 Invalid, 2926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [910 Valid, 2016 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-23 03:49:24,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4510 states. [2022-11-23 03:49:24,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4510 to 4510. [2022-11-23 03:49:24,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4509 states have (on average 1.3251275227323132) internal successors, (5975), 4509 states have internal predecessors, (5975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:24,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 5975 transitions. [2022-11-23 03:49:24,603 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 5975 transitions. Word has length 84 [2022-11-23 03:49:24,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:49:24,605 INFO L495 AbstractCegarLoop]: Abstraction has 4510 states and 5975 transitions. [2022-11-23 03:49:24,606 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) [2022-11-23 03:49:24,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 5975 transitions. [2022-11-23 03:49:24,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-23 03:49:24,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:49:24,613 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:49:24,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:49:24,614 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:49:24,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:49:24,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1374981862, now seen corresponding path program 1 times [2022-11-23 03:49:24,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:49:24,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496547911] [2022-11-23 03:49:24,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:24,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:49:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:49:24,996 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:49:24,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:24,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496547911] [2022-11-23 03:49:24,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496547911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:49:24,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:49:24,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:49:24,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290875546] [2022-11-23 03:49:25,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:49:25,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:49:25,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:25,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:49:25,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:49:25,005 INFO L87 Difference]: Start difference. First operand 4510 states and 5975 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:31,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:49:31,197 INFO L93 Difference]: Finished difference Result 14275 states and 18791 transitions. [2022-11-23 03:49:31,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:49:31,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-11-23 03:49:31,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:49:31,231 INFO L225 Difference]: With dead ends: 14275 [2022-11-23 03:49:31,231 INFO L226 Difference]: Without dead ends: 9767 [2022-11-23 03:49:31,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:49:31,238 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 2162 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4749 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 5527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 4749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:49:31,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2162 Valid, 185 Invalid, 5527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 4749 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-23 03:49:31,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2022-11-23 03:49:31,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9016. [2022-11-23 03:49:31,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9016 states, 9015 states have (on average 1.3039378813089295) internal successors, (11755), 9015 states have internal predecessors, (11755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9016 states to 9016 states and 11755 transitions. [2022-11-23 03:49:31,436 INFO L78 Accepts]: Start accepts. Automaton has 9016 states and 11755 transitions. Word has length 95 [2022-11-23 03:49:31,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:49:31,437 INFO L495 AbstractCegarLoop]: Abstraction has 9016 states and 11755 transitions. [2022-11-23 03:49:31,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand 9016 states and 11755 transitions. [2022-11-23 03:49:31,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-23 03:49:31,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:49:31,448 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:49:31,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:49:31,448 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:49:31,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:49:31,449 INFO L85 PathProgramCache]: Analyzing trace with hash -259629189, now seen corresponding path program 1 times [2022-11-23 03:49:31,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:49:31,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710124303] [2022-11-23 03:49:31,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:31,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:49:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:49:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:49:31,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:31,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710124303] [2022-11-23 03:49:31,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710124303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:49:31,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:49:31,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:49:31,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613938230] [2022-11-23 03:49:31,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:49:31,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:49:31,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:31,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:49:31,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:49:31,839 INFO L87 Difference]: Start difference. First operand 9016 states and 11755 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:37,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:49:37,208 INFO L93 Difference]: Finished difference Result 22575 states and 30209 transitions. [2022-11-23 03:49:37,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:49:37,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2022-11-23 03:49:37,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:49:37,249 INFO L225 Difference]: With dead ends: 22575 [2022-11-23 03:49:37,250 INFO L226 Difference]: Without dead ends: 12773 [2022-11-23 03:49:37,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:49:37,261 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 706 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 3837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:49:37,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 710 Invalid, 3837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 3109 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-23 03:49:37,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12773 states. [2022-11-23 03:49:37,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12773 to 12771. [2022-11-23 03:49:37,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12771 states, 12770 states have (on average 1.2173844949099453) internal successors, (15546), 12770 states have internal predecessors, (15546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:37,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12771 states to 12771 states and 15546 transitions. [2022-11-23 03:49:37,516 INFO L78 Accepts]: Start accepts. Automaton has 12771 states and 15546 transitions. Word has length 149 [2022-11-23 03:49:37,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:49:37,516 INFO L495 AbstractCegarLoop]: Abstraction has 12771 states and 15546 transitions. [2022-11-23 03:49:37,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:37,517 INFO L276 IsEmpty]: Start isEmpty. Operand 12771 states and 15546 transitions. [2022-11-23 03:49:37,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-23 03:49:37,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:49:37,521 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:49:37,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:49:37,522 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:49:37,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:49:37,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1909280368, now seen corresponding path program 1 times [2022-11-23 03:49:37,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:49:37,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624504218] [2022-11-23 03:49:37,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:37,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:49:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:49:38,200 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 41 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:49:38,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:38,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624504218] [2022-11-23 03:49:38,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624504218] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:49:38,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807274292] [2022-11-23 03:49:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:38,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:38,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:49:38,204 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:49:38,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:49:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:49:38,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 03:49:38,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:49:38,474 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-23 03:49:38,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:49:38,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807274292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:49:38,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:49:38,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 03:49:38,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548040349] [2022-11-23 03:49:38,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:49:38,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:49:38,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:38,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:49:38,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:49:38,489 INFO L87 Difference]: Start difference. First operand 12771 states and 15546 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:43,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:49:43,190 INFO L93 Difference]: Finished difference Result 32299 states and 40261 transitions. [2022-11-23 03:49:43,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:49:43,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 [2022-11-23 03:49:43,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:49:43,230 INFO L225 Difference]: With dead ends: 32299 [2022-11-23 03:49:43,230 INFO L226 Difference]: Without dead ends: 20281 [2022-11-23 03:49:43,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:49:43,241 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 802 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 745 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 3045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 745 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:49:43,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 972 Invalid, 3045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [745 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-23 03:49:43,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20281 states. [2022-11-23 03:49:43,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20281 to 18779. [2022-11-23 03:49:43,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18779 states, 18778 states have (on average 1.2516774949408882) internal successors, (23504), 18778 states have internal predecessors, (23504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:43,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18779 states to 18779 states and 23504 transitions. [2022-11-23 03:49:43,543 INFO L78 Accepts]: Start accepts. Automaton has 18779 states and 23504 transitions. Word has length 240 [2022-11-23 03:49:43,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:49:43,544 INFO L495 AbstractCegarLoop]: Abstraction has 18779 states and 23504 transitions. [2022-11-23 03:49:43,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:43,545 INFO L276 IsEmpty]: Start isEmpty. Operand 18779 states and 23504 transitions. [2022-11-23 03:49:43,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-11-23 03:49:43,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:49:43,549 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:49:43,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:49:43,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:49:43,755 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:49:43,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:49:43,756 INFO L85 PathProgramCache]: Analyzing trace with hash -587403453, now seen corresponding path program 1 times [2022-11-23 03:49:43,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:49:43,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587687154] [2022-11-23 03:49:43,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:43,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:49:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:49:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-23 03:49:44,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:44,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587687154] [2022-11-23 03:49:44,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587687154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:49:44,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:49:44,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:49:44,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586865039] [2022-11-23 03:49:44,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:49:44,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:49:44,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:44,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:49:44,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:49:44,148 INFO L87 Difference]: Start difference. First operand 18779 states and 23504 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:48,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:49:48,510 INFO L93 Difference]: Finished difference Result 44315 states and 57008 transitions. [2022-11-23 03:49:48,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:49:48,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 250 [2022-11-23 03:49:48,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:49:48,563 INFO L225 Difference]: With dead ends: 44315 [2022-11-23 03:49:48,563 INFO L226 Difference]: Without dead ends: 26289 [2022-11-23 03:49:48,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:49:48,581 INFO L413 NwaCegarLoop]: 1213 mSDtfsCounter, 765 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 2785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:49:48,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 1221 Invalid, 2785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-23 03:49:48,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26289 states. [2022-11-23 03:49:48,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26289 to 26289. [2022-11-23 03:49:48,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26289 states, 26288 states have (on average 1.21869293974437) internal successors, (32037), 26288 states have internal predecessors, (32037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:48,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26289 states to 26289 states and 32037 transitions. [2022-11-23 03:49:48,999 INFO L78 Accepts]: Start accepts. Automaton has 26289 states and 32037 transitions. Word has length 250 [2022-11-23 03:49:48,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:49:49,000 INFO L495 AbstractCegarLoop]: Abstraction has 26289 states and 32037 transitions. [2022-11-23 03:49:49,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:49,000 INFO L276 IsEmpty]: Start isEmpty. Operand 26289 states and 32037 transitions. [2022-11-23 03:49:49,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-11-23 03:49:49,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:49:49,005 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:49:49,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 03:49:49,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:49:49,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:49:49,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1123992775, now seen corresponding path program 1 times [2022-11-23 03:49:49,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:49:49,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625668035] [2022-11-23 03:49:49,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:49,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:49:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:49:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-23 03:49:49,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:49,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625668035] [2022-11-23 03:49:49,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625668035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:49:49,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:49:49,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:49:49,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078314980] [2022-11-23 03:49:49,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:49:49,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:49:49,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:49,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:49:49,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:49:49,469 INFO L87 Difference]: Start difference. First operand 26289 states and 32037 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:54,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:49:54,251 INFO L93 Difference]: Finished difference Result 71353 states and 88217 transitions. [2022-11-23 03:49:54,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:49:54,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 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 265 [2022-11-23 03:49:54,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:49:54,330 INFO L225 Difference]: With dead ends: 71353 [2022-11-23 03:49:54,330 INFO L226 Difference]: Without dead ends: 42813 [2022-11-23 03:49:54,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:49:54,360 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:49:54,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 321 Invalid, 2781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-23 03:49:54,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42813 states. [2022-11-23 03:49:54,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42813 to 39807. [2022-11-23 03:49:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39807 states, 39806 states have (on average 1.177309953273376) internal successors, (46864), 39806 states have internal predecessors, (46864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:55,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39807 states to 39807 states and 46864 transitions. [2022-11-23 03:49:55,004 INFO L78 Accepts]: Start accepts. Automaton has 39807 states and 46864 transitions. Word has length 265 [2022-11-23 03:49:55,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:49:55,004 INFO L495 AbstractCegarLoop]: Abstraction has 39807 states and 46864 transitions. [2022-11-23 03:49:55,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:49:55,005 INFO L276 IsEmpty]: Start isEmpty. Operand 39807 states and 46864 transitions. [2022-11-23 03:49:55,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-23 03:49:55,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:49:55,009 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:49:55,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 03:49:55,009 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:49:55,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:49:55,010 INFO L85 PathProgramCache]: Analyzing trace with hash -659965482, now seen corresponding path program 1 times [2022-11-23 03:49:55,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:49:55,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053952203] [2022-11-23 03:49:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:49:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:49:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:49:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:49:55,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:55,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053952203] [2022-11-23 03:49:55,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053952203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:49:55,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:49:55,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:49:55,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605620743] [2022-11-23 03:49:55,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:49:55,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:49:55,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:55,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:49:55,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:49:55,308 INFO L87 Difference]: Start difference. First operand 39807 states and 46864 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:50:00,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:50:00,092 INFO L93 Difference]: Finished difference Result 100640 states and 118187 transitions. [2022-11-23 03:50:00,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:50:00,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2022-11-23 03:50:00,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:50:00,179 INFO L225 Difference]: With dead ends: 100640 [2022-11-23 03:50:00,179 INFO L226 Difference]: Without dead ends: 61586 [2022-11-23 03:50:00,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:50:00,203 INFO L413 NwaCegarLoop]: 1164 mSDtfsCounter, 637 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:50:00,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1172 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-23 03:50:00,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61586 states. [2022-11-23 03:50:01,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61586 to 61586. [2022-11-23 03:50:01,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61586 states, 61585 states have (on average 1.1574084598522367) internal successors, (71279), 61585 states have internal predecessors, (71279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:50:01,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61586 states to 61586 states and 71279 transitions. [2022-11-23 03:50:01,348 INFO L78 Accepts]: Start accepts. Automaton has 61586 states and 71279 transitions. Word has length 268 [2022-11-23 03:50:01,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:50:01,349 INFO L495 AbstractCegarLoop]: Abstraction has 61586 states and 71279 transitions. [2022-11-23 03:50:01,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:50:01,349 INFO L276 IsEmpty]: Start isEmpty. Operand 61586 states and 71279 transitions. [2022-11-23 03:50:01,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-11-23 03:50:01,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:50:01,730 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:50:01,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 03:50:01,731 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:50:01,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:50:01,732 INFO L85 PathProgramCache]: Analyzing trace with hash 462101370, now seen corresponding path program 1 times [2022-11-23 03:50:01,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:50:01,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509796588] [2022-11-23 03:50:01,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:50:01,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:50:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:50:03,741 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 03:50:03,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:50:03,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509796588] [2022-11-23 03:50:03,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509796588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:50:03,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:50:03,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:50:03,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879195418] [2022-11-23 03:50:03,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:50:03,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:50:03,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:50:03,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:50:03,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:50:03,745 INFO L87 Difference]: Start difference. First operand 61586 states and 71279 transitions. Second operand has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:50:11,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:50:11,098 INFO L93 Difference]: Finished difference Result 160720 states and 188666 transitions. [2022-11-23 03:50:11,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:50:11,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 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 409 [2022-11-23 03:50:11,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:50:11,400 INFO L225 Difference]: With dead ends: 160720 [2022-11-23 03:50:11,415 INFO L226 Difference]: Without dead ends: 99887 [2022-11-23 03:50:11,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:50:11,463 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 1414 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3615 mSolverCounterSat, 1288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 4903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1288 IncrementalHoareTripleChecker+Valid, 3615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:50:11,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 125 Invalid, 4903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1288 Valid, 3615 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-23 03:50:11,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99887 states. [2022-11-23 03:50:12,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99887 to 84116. [2022-11-23 03:50:12,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84116 states, 84115 states have (on average 1.1703620043987397) internal successors, (98445), 84115 states have internal predecessors, (98445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:50:13,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84116 states to 84116 states and 98445 transitions. [2022-11-23 03:50:13,174 INFO L78 Accepts]: Start accepts. Automaton has 84116 states and 98445 transitions. Word has length 409 [2022-11-23 03:50:13,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:50:13,175 INFO L495 AbstractCegarLoop]: Abstraction has 84116 states and 98445 transitions. [2022-11-23 03:50:13,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:50:13,176 INFO L276 IsEmpty]: Start isEmpty. Operand 84116 states and 98445 transitions. [2022-11-23 03:50:13,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-11-23 03:50:13,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:50:13,205 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 03:50:13,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 03:50:13,206 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:50:13,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:50:13,207 INFO L85 PathProgramCache]: Analyzing trace with hash 273957708, now seen corresponding path program 1 times [2022-11-23 03:50:13,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:50:13,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830414503] [2022-11-23 03:50:13,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:50:13,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:50:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:50:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-23 03:50:13,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:50:13,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830414503] [2022-11-23 03:50:13,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830414503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:50:13,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:50:13,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:50:13,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155553178] [2022-11-23 03:50:13,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:50:13,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:50:13,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:50:13,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:50:13,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:50:13,777 INFO L87 Difference]: Start difference. First operand 84116 states and 98445 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) [2022-11-23 03:50:18,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:50:18,777 INFO L93 Difference]: Finished difference Result 202025 states and 237760 transitions. [2022-11-23 03:50:18,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:50:18,779 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 424 [2022-11-23 03:50:18,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:50:18,926 INFO L225 Difference]: With dead ends: 202025 [2022-11-23 03:50:18,926 INFO L226 Difference]: Without dead ends: 118662 [2022-11-23 03:50:18,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:50:18,986 INFO L413 NwaCegarLoop]: 1236 mSDtfsCounter, 786 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 2754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:50:18,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1244 Invalid, 2754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-23 03:50:19,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118662 states. [2022-11-23 03:50:20,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118662 to 111903. [2022-11-23 03:50:20,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111903 states, 111902 states have (on average 1.1402030347983056) internal successors, (127591), 111902 states have internal predecessors, (127591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:50:20,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111903 states to 111903 states and 127591 transitions. [2022-11-23 03:50:20,995 INFO L78 Accepts]: Start accepts. Automaton has 111903 states and 127591 transitions. Word has length 424 [2022-11-23 03:50:20,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:50:20,998 INFO L495 AbstractCegarLoop]: Abstraction has 111903 states and 127591 transitions. [2022-11-23 03:50:20,999 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) [2022-11-23 03:50:20,999 INFO L276 IsEmpty]: Start isEmpty. Operand 111903 states and 127591 transitions. [2022-11-23 03:50:21,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-11-23 03:50:21,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:50:21,014 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:50:21,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 03:50:21,015 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:50:21,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:50:21,015 INFO L85 PathProgramCache]: Analyzing trace with hash -744188340, now seen corresponding path program 1 times [2022-11-23 03:50:21,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:50:21,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482226331] [2022-11-23 03:50:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:50:21,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:50:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:50:22,700 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 373 proven. 54 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-23 03:50:22,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:50:22,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482226331] [2022-11-23 03:50:22,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482226331] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:50:22,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402858044] [2022-11-23 03:50:22,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:50:22,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:50:22,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:50:22,703 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:50:22,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:50:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:50:22,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 03:50:22,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:50:23,675 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 303 proven. 68 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-23 03:50:23,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:50:25,490 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-23 03:50:25,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402858044] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 03:50:25,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:50:25,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 8 [2022-11-23 03:50:25,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695165030] [2022-11-23 03:50:25,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:50:25,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:50:25,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:50:25,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:50:25,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 03:50:25,494 INFO L87 Difference]: Start difference. First operand 111903 states and 127591 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:50:31,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:50:31,971 INFO L93 Difference]: Finished difference Result 250089 states and 285914 transitions. [2022-11-23 03:50:31,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:50:31,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 432 [2022-11-23 03:50:31,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:50:32,129 INFO L225 Difference]: With dead ends: 250089 [2022-11-23 03:50:32,129 INFO L226 Difference]: Without dead ends: 138939 [2022-11-23 03:50:32,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 860 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 03:50:32,165 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 702 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 3023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:50:32,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 935 Invalid, 3023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2144 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-23 03:50:32,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138939 states. [2022-11-23 03:50:33,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138939 to 136686. [2022-11-23 03:50:33,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136686 states, 136685 states have (on average 1.1371035592786334) internal successors, (155425), 136685 states have internal predecessors, (155425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:50:34,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136686 states to 136686 states and 155425 transitions. [2022-11-23 03:50:34,209 INFO L78 Accepts]: Start accepts. Automaton has 136686 states and 155425 transitions. Word has length 432 [2022-11-23 03:50:34,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:50:34,210 INFO L495 AbstractCegarLoop]: Abstraction has 136686 states and 155425 transitions. [2022-11-23 03:50:34,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:50:34,210 INFO L276 IsEmpty]: Start isEmpty. Operand 136686 states and 155425 transitions. [2022-11-23 03:50:34,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-11-23 03:50:34,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:50:34,228 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:50:34,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:50:34,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d00c6849-f77b-4495-a73e-e9f6ae1c3f66/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 03:50:34,436 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:50:34,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:50:34,437 INFO L85 PathProgramCache]: Analyzing trace with hash 482989964, now seen corresponding path program 1 times [2022-11-23 03:50:34,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:50:34,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229116157] [2022-11-23 03:50:34,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:50:34,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:50:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:50:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 491 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-23 03:50:35,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:50:35,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229116157] [2022-11-23 03:50:35,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229116157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:50:35,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:50:35,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:50:35,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064917656] [2022-11-23 03:50:35,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:50:35,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:50:35,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:50:35,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:50:35,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:50:35,363 INFO L87 Difference]: Start difference. First operand 136686 states and 155425 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:50:41,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:50:41,145 INFO L93 Difference]: Finished difference Result 313924 states and 355681 transitions. [2022-11-23 03:50:41,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:50:41,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 477 [2022-11-23 03:50:41,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:50:41,331 INFO L225 Difference]: With dead ends: 313924 [2022-11-23 03:50:41,331 INFO L226 Difference]: Without dead ends: 177991 [2022-11-23 03:50:41,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:50:41,367 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 734 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:50:41,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 445 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-23 03:50:41,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177991 states. [2022-11-23 03:50:43,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177991 to 175738. [2022-11-23 03:50:43,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175738 states, 175737 states have (on average 1.1165093292818244) internal successors, (196212), 175737 states have internal predecessors, (196212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:50:44,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175738 states to 175738 states and 196212 transitions. [2022-11-23 03:50:44,543 INFO L78 Accepts]: Start accepts. Automaton has 175738 states and 196212 transitions. Word has length 477 [2022-11-23 03:50:44,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:50:44,544 INFO L495 AbstractCegarLoop]: Abstraction has 175738 states and 196212 transitions. [2022-11-23 03:50:44,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:50:44,545 INFO L276 IsEmpty]: Start isEmpty. Operand 175738 states and 196212 transitions. [2022-11-23 03:50:44,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-11-23 03:50:44,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:50:44,571 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:50:44,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 03:50:44,572 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:50:44,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:50:44,573 INFO L85 PathProgramCache]: Analyzing trace with hash -413276815, now seen corresponding path program 1 times [2022-11-23 03:50:44,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:50:44,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049857442] [2022-11-23 03:50:44,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:50:44,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:50:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:50:44,992 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 354 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-11-23 03:50:44,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:50:44,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049857442] [2022-11-23 03:50:44,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049857442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:50:44,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:50:44,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:50:44,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222692854] [2022-11-23 03:50:44,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:50:44,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:50:44,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:50:44,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:50:44,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:50:44,996 INFO L87 Difference]: Start difference. First operand 175738 states and 196212 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:50:50,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:50:50,621 INFO L93 Difference]: Finished difference Result 362739 states and 404095 transitions. [2022-11-23 03:50:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:50:50,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 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 479 [2022-11-23 03:50:50,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:50:50,927 INFO L225 Difference]: With dead ends: 362739 [2022-11-23 03:50:50,927 INFO L226 Difference]: Without dead ends: 187754 [2022-11-23 03:50:51,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:50:51,025 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 631 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 2825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:50:51,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 403 Invalid, 2825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-23 03:50:51,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187754 states. [2022-11-23 03:50:53,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187754 to 183248. [2022-11-23 03:50:53,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183248 states, 183247 states have (on average 1.1045201285696356) internal successors, (202400), 183247 states have internal predecessors, (202400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:50:53,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183248 states to 183248 states and 202400 transitions. [2022-11-23 03:50:53,870 INFO L78 Accepts]: Start accepts. Automaton has 183248 states and 202400 transitions. Word has length 479 [2022-11-23 03:50:53,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:50:53,870 INFO L495 AbstractCegarLoop]: Abstraction has 183248 states and 202400 transitions. [2022-11-23 03:50:53,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:50:53,870 INFO L276 IsEmpty]: Start isEmpty. Operand 183248 states and 202400 transitions. [2022-11-23 03:50:53,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2022-11-23 03:50:53,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:50:53,886 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:50:53,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 03:50:53,887 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:50:53,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:50:53,887 INFO L85 PathProgramCache]: Analyzing trace with hash 812629498, now seen corresponding path program 1 times [2022-11-23 03:50:53,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:50:53,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664286218] [2022-11-23 03:50:53,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:50:53,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:50:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:50:54,979 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 487 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-23 03:50:54,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:50:54,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664286218] [2022-11-23 03:50:54,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664286218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:50:54,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:50:54,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:50:54,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429716255] [2022-11-23 03:50:54,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:50:54,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:50:54,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:50:54,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:50:54,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:50:54,983 INFO L87 Difference]: Start difference. First operand 183248 states and 202400 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:00,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:51:00,938 INFO L93 Difference]: Finished difference Result 394281 states and 438221 transitions. [2022-11-23 03:51:00,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:51:00,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 540 [2022-11-23 03:51:00,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:51:01,229 INFO L225 Difference]: With dead ends: 394281 [2022-11-23 03:51:01,229 INFO L226 Difference]: Without dead ends: 211786 [2022-11-23 03:51:01,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:51:01,311 INFO L413 NwaCegarLoop]: 1253 mSDtfsCounter, 566 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:51:01,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 1261 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-23 03:51:01,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211786 states. [2022-11-23 03:51:04,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211786 to 205027. [2022-11-23 03:51:04,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205027 states, 205026 states have (on average 1.0870767609961662) internal successors, (222879), 205026 states have internal predecessors, (222879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:04,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205027 states to 205027 states and 222879 transitions. [2022-11-23 03:51:04,909 INFO L78 Accepts]: Start accepts. Automaton has 205027 states and 222879 transitions. Word has length 540 [2022-11-23 03:51:04,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:51:04,909 INFO L495 AbstractCegarLoop]: Abstraction has 205027 states and 222879 transitions. [2022-11-23 03:51:04,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:51:04,910 INFO L276 IsEmpty]: Start isEmpty. Operand 205027 states and 222879 transitions. [2022-11-23 03:51:04,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2022-11-23 03:51:04,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:51:04,919 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2022-11-23 03:51:04,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 03:51:04,920 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:51:04,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:51:04,920 INFO L85 PathProgramCache]: Analyzing trace with hash -762691927, now seen corresponding path program 1 times [2022-11-23 03:51:04,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:51:04,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504439739] [2022-11-23 03:51:04,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:51:04,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:51:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:51:05,266 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 718 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-11-23 03:51:05,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:51:05,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504439739] [2022-11-23 03:51:05,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504439739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:51:05,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:51:05,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:51:05,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959444842] [2022-11-23 03:51:05,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:51:05,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:51:05,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:51:05,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:51:05,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:51:05,270 INFO L87 Difference]: Start difference. First operand 205027 states and 222879 transitions. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)