./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label18.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_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/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_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label18.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/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_61128e4f-adbe-4f1e-8765-e8f66588b343/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 2e51d75a8ad9c92226cf9c3e34cc8785c0e5af56e84d6fc07c305ea014e608b6 --- 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 03:31:10,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:31:10,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:31:10,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:31:10,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:31:10,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:31:10,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:31:10,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:31:10,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:31:10,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:31:10,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:31:10,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:31:10,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:31:10,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:31:10,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:31:10,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:31:10,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:31:10,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:31:10,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:31:10,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:31:10,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:31:10,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:31:10,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:31:10,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:31:10,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:31:10,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:31:10,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:31:10,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:31:10,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:31:10,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:31:10,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:31:10,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:31:10,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:31:10,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:31:10,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:31:10,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:31:10,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:31:10,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:31:10,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:31:10,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:31:10,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:31:10,908 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:31:10,949 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:31:10,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:31:10,955 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:31:10,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:31:10,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:31:10,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:31:10,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:31:10,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:31:10,958 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:31:10,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:31:10,959 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:31:10,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:31:10,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:31:10,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:31:10,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:31:10,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:31:10,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:31:10,961 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:31:10,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:31:10,961 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:31:10,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:31:10,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:31:10,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:31:10,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:31:10,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:31:10,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:31:10,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:31:10,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:31:10,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:31:10,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:31:10,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:31:10,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:31:10,965 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:31:10,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:31:10,965 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_61128e4f-adbe-4f1e-8765-e8f66588b343/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e51d75a8ad9c92226cf9c3e34cc8785c0e5af56e84d6fc07c305ea014e608b6 [2022-11-23 03:31:11,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:31:11,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:31:11,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:31:11,250 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:31:11,251 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:31:11,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/eca-rers2012/Problem12_label18.c [2022-11-23 03:31:14,310 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:31:14,907 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:31:14,908 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/sv-benchmarks/c/eca-rers2012/Problem12_label18.c [2022-11-23 03:31:14,937 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/data/0a4f1455f/a339976765c146f896dafe75f1cbffe9/FLAG6d6856825 [2022-11-23 03:31:14,956 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/data/0a4f1455f/a339976765c146f896dafe75f1cbffe9 [2022-11-23 03:31:14,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:31:14,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:31:14,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:31:14,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:31:14,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:31:14,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:31:14" (1/1) ... [2022-11-23 03:31:14,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2436f85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:14, skipping insertion in model container [2022-11-23 03:31:14,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:31:14" (1/1) ... [2022-11-23 03:31:14,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:31:15,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:31:15,358 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_61128e4f-adbe-4f1e-8765-e8f66588b343/sv-benchmarks/c/eca-rers2012/Problem12_label18.c[6604,6617] [2022-11-23 03:31:16,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:31:16,350 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:31:16,386 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_61128e4f-adbe-4f1e-8765-e8f66588b343/sv-benchmarks/c/eca-rers2012/Problem12_label18.c[6604,6617] [2022-11-23 03:31:16,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:31:16,984 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:31:16,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:16 WrapperNode [2022-11-23 03:31:16,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:31:16,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:31:16,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:31:16,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:31:16,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:16" (1/1) ... [2022-11-23 03:31:17,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:16" (1/1) ... [2022-11-23 03:31:17,482 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-11-23 03:31:17,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:31:17,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:31:17,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:31:17,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:31:17,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:16" (1/1) ... [2022-11-23 03:31:17,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:16" (1/1) ... [2022-11-23 03:31:17,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:16" (1/1) ... [2022-11-23 03:31:17,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:16" (1/1) ... [2022-11-23 03:31:17,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:16" (1/1) ... [2022-11-23 03:31:17,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:16" (1/1) ... [2022-11-23 03:31:17,861 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:16" (1/1) ... [2022-11-23 03:31:17,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:16" (1/1) ... [2022-11-23 03:31:17,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:31:17,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:31:17,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:31:17,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:31:17,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:16" (1/1) ... [2022-11-23 03:31:18,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:31:18,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:31:18,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:31:18,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:31:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:31:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:31:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:31:18,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:31:18,244 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:31:18,246 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:31:23,366 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:31:23,396 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:31:23,397 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 03:31:23,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:31:23 BoogieIcfgContainer [2022-11-23 03:31:23,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:31:23,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:31:23,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:31:23,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:31:23,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:31:14" (1/3) ... [2022-11-23 03:31:23,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643995ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:31:23, skipping insertion in model container [2022-11-23 03:31:23,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:16" (2/3) ... [2022-11-23 03:31:23,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643995ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:31:23, skipping insertion in model container [2022-11-23 03:31:23,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:31:23" (3/3) ... [2022-11-23 03:31:23,415 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label18.c [2022-11-23 03:31:23,436 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:31:23,436 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:31:23,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:31:23,548 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;@72bb2b29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:31:23,549 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 03:31:23,559 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 03:31:23,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-23 03:31:23,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:31:23,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:31:23,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:31:23,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:31:23,581 INFO L85 PathProgramCache]: Analyzing trace with hash -92557335, now seen corresponding path program 1 times [2022-11-23 03:31:23,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:31:23,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195385903] [2022-11-23 03:31:23,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:31:23,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:31:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:31:24,060 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 03:31:24,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:31:24,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195385903] [2022-11-23 03:31:24,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195385903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:31:24,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:31:24,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:31:24,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449044062] [2022-11-23 03:31:24,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:31:24,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:31:24,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:31:24,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:31:24,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:31:24,124 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 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 03:31:29,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:31:29,398 INFO L93 Difference]: Finished difference Result 2404 states and 4645 transitions. [2022-11-23 03:31:29,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:31:29,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-11-23 03:31:29,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:31:29,423 INFO L225 Difference]: With dead ends: 2404 [2022-11-23 03:31:29,423 INFO L226 Difference]: Without dead ends: 1506 [2022-11-23 03:31:29,429 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 03:31:29,433 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 767 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:31:29,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 525 Invalid, 3033 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [696 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-23 03:31:29,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-11-23 03:31:29,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-11-23 03:31:29,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6066445182724252) internal successors, (2418), 1505 states have internal predecessors, (2418), 0 states have call successors, (0), 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 03:31:29,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2418 transitions. [2022-11-23 03:31:29,577 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2418 transitions. Word has length 53 [2022-11-23 03:31:29,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:31:29,579 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2418 transitions. [2022-11-23 03:31:29,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 03:31:29,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2418 transitions. [2022-11-23 03:31:29,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-23 03:31:29,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:31:29,592 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:31:29,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:31:29,593 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:31:29,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:31:29,593 INFO L85 PathProgramCache]: Analyzing trace with hash 749421029, now seen corresponding path program 1 times [2022-11-23 03:31:29,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:31:29,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182597444] [2022-11-23 03:31:29,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:31:29,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:31:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:31:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:31:29,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:31:29,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182597444] [2022-11-23 03:31:29,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182597444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:31:29,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:31:29,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:31:29,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620804339] [2022-11-23 03:31:29,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:31:29,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:31:29,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:31:29,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:31:29,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:31:29,860 INFO L87 Difference]: Start difference. First operand 1506 states and 2418 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 03:31:34,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:31:34,218 INFO L93 Difference]: Finished difference Result 4512 states and 7249 transitions. [2022-11-23 03:31:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:31:34,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2022-11-23 03:31:34,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:31:34,232 INFO L225 Difference]: With dead ends: 4512 [2022-11-23 03:31:34,232 INFO L226 Difference]: Without dead ends: 3008 [2022-11-23 03:31:34,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:31:34,236 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 774 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:31:34,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 449 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-23 03:31:34,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2022-11-23 03:31:34,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2022-11-23 03:31:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.4156967076820752) internal successors, (4257), 3007 states have internal predecessors, (4257), 0 states have call successors, (0), 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 03:31:34,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4257 transitions. [2022-11-23 03:31:34,398 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4257 transitions. Word has length 128 [2022-11-23 03:31:34,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:31:34,401 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4257 transitions. [2022-11-23 03:31:34,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 03:31:34,402 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4257 transitions. [2022-11-23 03:31:34,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-23 03:31:34,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:31:34,410 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:31:34,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:31:34,411 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:31:34,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:31:34,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1433167350, now seen corresponding path program 1 times [2022-11-23 03:31:34,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:31:34,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092597359] [2022-11-23 03:31:34,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:31:34,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:31:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:31:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:31:34,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:31:34,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092597359] [2022-11-23 03:31:34,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092597359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:31:34,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:31:34,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:31:34,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110760836] [2022-11-23 03:31:34,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:31:34,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:31:34,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:31:34,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:31:34,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:31:34,812 INFO L87 Difference]: Start difference. First operand 3008 states and 4257 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 03:31:41,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:31:41,202 INFO L93 Difference]: Finished difference Result 9769 states and 13601 transitions. [2022-11-23 03:31:41,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:31:41,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2022-11-23 03:31:41,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:31:41,226 INFO L225 Difference]: With dead ends: 9769 [2022-11-23 03:31:41,226 INFO L226 Difference]: Without dead ends: 6763 [2022-11-23 03:31:41,230 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 03:31:41,231 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 2182 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4712 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 5459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 4712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:31:41,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2182 Valid, 164 Invalid, 5459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 4712 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-23 03:31:41,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2022-11-23 03:31:41,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2022-11-23 03:31:41,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.3510795622596865) internal successors, (9136), 6762 states have internal predecessors, (9136), 0 states have call successors, (0), 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 03:31:41,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 9136 transitions. [2022-11-23 03:31:41,369 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 9136 transitions. Word has length 130 [2022-11-23 03:31:41,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:31:41,370 INFO L495 AbstractCegarLoop]: Abstraction has 6763 states and 9136 transitions. [2022-11-23 03:31:41,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 03:31:41,371 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 9136 transitions. [2022-11-23 03:31:41,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-23 03:31:41,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:31:41,374 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:31:41,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:31:41,374 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:31:41,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:31:41,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1936892246, now seen corresponding path program 1 times [2022-11-23 03:31:41,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:31:41,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681949397] [2022-11-23 03:31:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:31:41,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:31:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:31:41,642 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:31:41,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:31:41,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681949397] [2022-11-23 03:31:41,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681949397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:31:41,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:31:41,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:31:41,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805176733] [2022-11-23 03:31:41,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:31:41,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:31:41,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:31:41,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:31:41,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:31:41,650 INFO L87 Difference]: Start difference. First operand 6763 states and 9136 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 03:31:46,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:31:46,003 INFO L93 Difference]: Finished difference Result 15777 states and 21635 transitions. [2022-11-23 03:31:46,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:31:46,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 194 [2022-11-23 03:31:46,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:31:46,035 INFO L225 Difference]: With dead ends: 15777 [2022-11-23 03:31:46,036 INFO L226 Difference]: Without dead ends: 9767 [2022-11-23 03:31:46,042 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 03:31:46,043 INFO L413 NwaCegarLoop]: 1235 mSDtfsCounter, 707 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2693 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 3044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 2693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:31:46,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 1243 Invalid, 3044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 2693 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-23 03:31:46,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2022-11-23 03:31:46,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2022-11-23 03:31:46,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.3334015973786606) internal successors, (13022), 9766 states have internal predecessors, (13022), 0 states have call successors, (0), 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 03:31:46,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13022 transitions. [2022-11-23 03:31:46,228 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 13022 transitions. Word has length 194 [2022-11-23 03:31:46,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:31:46,230 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 13022 transitions. [2022-11-23 03:31:46,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 03:31:46,230 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 13022 transitions. [2022-11-23 03:31:46,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-23 03:31:46,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:31:46,234 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:31:46,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:31:46,234 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:31:46,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:31:46,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1723378956, now seen corresponding path program 1 times [2022-11-23 03:31:46,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:31:46,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180089701] [2022-11-23 03:31:46,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:31:46,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:31:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:31:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:31:46,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:31:46,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180089701] [2022-11-23 03:31:46,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180089701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:31:46,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:31:46,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:31:46,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585579721] [2022-11-23 03:31:46,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:31:46,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:31:46,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:31:46,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:31:46,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:31:46,492 INFO L87 Difference]: Start difference. First operand 9767 states and 13022 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 03:31:50,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:31:50,772 INFO L93 Difference]: Finished difference Result 18781 states and 25285 transitions. [2022-11-23 03:31:50,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:31:50,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2022-11-23 03:31:50,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:31:50,804 INFO L225 Difference]: With dead ends: 18781 [2022-11-23 03:31:50,804 INFO L226 Difference]: Without dead ends: 9767 [2022-11-23 03:31:50,812 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 03:31:50,813 INFO L413 NwaCegarLoop]: 1299 mSDtfsCounter, 737 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 3019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:31:50,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1307 Invalid, 3019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-23 03:31:50,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2022-11-23 03:31:50,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2022-11-23 03:31:51,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.2981773499897604) internal successors, (12678), 9766 states have internal predecessors, (12678), 0 states have call successors, (0), 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 03:31:51,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12678 transitions. [2022-11-23 03:31:51,026 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12678 transitions. Word has length 198 [2022-11-23 03:31:51,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:31:51,027 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 12678 transitions. [2022-11-23 03:31:51,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 03:31:51,028 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12678 transitions. [2022-11-23 03:31:51,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-23 03:31:51,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:31:51,033 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:31:51,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:31:51,033 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:31:51,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:31:51,034 INFO L85 PathProgramCache]: Analyzing trace with hash 994214791, now seen corresponding path program 1 times [2022-11-23 03:31:51,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:31:51,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415098680] [2022-11-23 03:31:51,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:31:51,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:31:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:31:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-23 03:31:51,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:31:51,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415098680] [2022-11-23 03:31:51,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415098680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:31:51,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:31:51,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:31:51,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228919608] [2022-11-23 03:31:51,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:31:51,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:31:51,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:31:51,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:31:51,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:31:51,508 INFO L87 Difference]: Start difference. First operand 9767 states and 12678 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 03:31:55,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:31:55,963 INFO L93 Difference]: Finished difference Result 22573 states and 29091 transitions. [2022-11-23 03:31:55,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:31:55,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 207 [2022-11-23 03:31:55,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:31:55,991 INFO L225 Difference]: With dead ends: 22573 [2022-11-23 03:31:55,991 INFO L226 Difference]: Without dead ends: 13522 [2022-11-23 03:31:56,001 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 03:31:56,002 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 690 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3695 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 3902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 3695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:31:56,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 628 Invalid, 3902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 3695 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-23 03:31:56,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13522 states. [2022-11-23 03:31:56,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13522 to 12771. [2022-11-23 03:31:56,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12771 states, 12770 states have (on average 1.2293657008613939) internal successors, (15699), 12770 states have internal predecessors, (15699), 0 states have call successors, (0), 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 03:31:56,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12771 states to 12771 states and 15699 transitions. [2022-11-23 03:31:56,300 INFO L78 Accepts]: Start accepts. Automaton has 12771 states and 15699 transitions. Word has length 207 [2022-11-23 03:31:56,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:31:56,301 INFO L495 AbstractCegarLoop]: Abstraction has 12771 states and 15699 transitions. [2022-11-23 03:31:56,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 03:31:56,301 INFO L276 IsEmpty]: Start isEmpty. Operand 12771 states and 15699 transitions. [2022-11-23 03:31:56,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-11-23 03:31:56,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:31:56,306 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:31:56,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:31:56,307 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:31:56,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:31:56,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1112033906, now seen corresponding path program 1 times [2022-11-23 03:31:56,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:31:56,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830669909] [2022-11-23 03:31:56,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:31:56,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:31:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:31:56,818 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 101 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-23 03:31:56,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:31:56,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830669909] [2022-11-23 03:31:56,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830669909] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:31:56,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276447665] [2022-11-23 03:31:56,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:31:56,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:31:56,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:31:56,826 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:31:56,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:31:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:31:56,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 03:31:57,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:31:57,198 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:31:57,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:31:57,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276447665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:31:57,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:31:57,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-23 03:31:57,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485046843] [2022-11-23 03:31:57,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:31:57,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:31:57,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:31:57,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:31:57,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:31:57,201 INFO L87 Difference]: Start difference. First operand 12771 states and 15699 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 03:32:01,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:32:01,131 INFO L93 Difference]: Finished difference Result 32299 states and 40603 transitions. [2022-11-23 03:32:01,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:32:01,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 281 [2022-11-23 03:32:01,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:32:01,176 INFO L225 Difference]: With dead ends: 32299 [2022-11-23 03:32:01,176 INFO L226 Difference]: Without dead ends: 20281 [2022-11-23 03:32:01,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:32:01,185 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 907 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2072 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-23 03:32:01,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 309 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 2072 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-23 03:32:01,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20281 states. [2022-11-23 03:32:01,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20281 to 20281. [2022-11-23 03:32:01,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20281 states, 20280 states have (on average 1.192603550295858) internal successors, (24186), 20280 states have internal predecessors, (24186), 0 states have call successors, (0), 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 03:32:01,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20281 states to 20281 states and 24186 transitions. [2022-11-23 03:32:01,485 INFO L78 Accepts]: Start accepts. Automaton has 20281 states and 24186 transitions. Word has length 281 [2022-11-23 03:32:01,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:32:01,486 INFO L495 AbstractCegarLoop]: Abstraction has 20281 states and 24186 transitions. [2022-11-23 03:32:01,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 03:32:01,487 INFO L276 IsEmpty]: Start isEmpty. Operand 20281 states and 24186 transitions. [2022-11-23 03:32:01,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-11-23 03:32:01,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:32:01,494 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:32:01,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 03:32:01,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:32:01,699 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:32:01,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:32:01,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1206592447, now seen corresponding path program 1 times [2022-11-23 03:32:01,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:32:01,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176921677] [2022-11-23 03:32:01,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:32:01,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:32:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:32:02,006 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-23 03:32:02,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:32:02,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176921677] [2022-11-23 03:32:02,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176921677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:32:02,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:32:02,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:32:02,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512175054] [2022-11-23 03:32:02,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:32:02,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:32:02,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:32:02,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:32:02,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:32:02,009 INFO L87 Difference]: Start difference. First operand 20281 states and 24186 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 03:32:06,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:32:06,251 INFO L93 Difference]: Finished difference Result 57082 states and 68620 transitions. [2022-11-23 03:32:06,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:32:06,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 330 [2022-11-23 03:32:06,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:32:06,319 INFO L225 Difference]: With dead ends: 57082 [2022-11-23 03:32:06,319 INFO L226 Difference]: Without dead ends: 37554 [2022-11-23 03:32:06,333 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 03:32:06,334 INFO L413 NwaCegarLoop]: 1337 mSDtfsCounter, 740 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:32:06,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 1345 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-23 03:32:06,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37554 states. [2022-11-23 03:32:06,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37554 to 34550. [2022-11-23 03:32:06,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34550 states, 34549 states have (on average 1.154534139917219) internal successors, (39888), 34549 states have internal predecessors, (39888), 0 states have call successors, (0), 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 03:32:06,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34550 states to 34550 states and 39888 transitions. [2022-11-23 03:32:06,878 INFO L78 Accepts]: Start accepts. Automaton has 34550 states and 39888 transitions. Word has length 330 [2022-11-23 03:32:06,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:32:06,879 INFO L495 AbstractCegarLoop]: Abstraction has 34550 states and 39888 transitions. [2022-11-23 03:32:06,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 03:32:06,879 INFO L276 IsEmpty]: Start isEmpty. Operand 34550 states and 39888 transitions. [2022-11-23 03:32:06,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-11-23 03:32:06,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:32:06,888 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 03:32:06,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 03:32:06,888 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:32:06,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:32:06,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1459272492, now seen corresponding path program 1 times [2022-11-23 03:32:06,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:32:06,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111699511] [2022-11-23 03:32:06,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:32:06,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:32:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:32:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 289 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-23 03:32:07,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:32:07,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111699511] [2022-11-23 03:32:07,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111699511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:32:07,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:32:07,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:32:07,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100808596] [2022-11-23 03:32:07,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:32:07,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:32:07,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:32:07,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:32:07,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:32:07,175 INFO L87 Difference]: Start difference. First operand 34550 states and 39888 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 03:32:11,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:32:11,331 INFO L93 Difference]: Finished difference Result 80363 states and 93219 transitions. [2022-11-23 03:32:11,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:32:11,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 352 [2022-11-23 03:32:11,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:32:11,401 INFO L225 Difference]: With dead ends: 80363 [2022-11-23 03:32:11,401 INFO L226 Difference]: Without dead ends: 46566 [2022-11-23 03:32:11,421 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 03:32:11,422 INFO L413 NwaCegarLoop]: 1226 mSDtfsCounter, 701 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-23 03:32:11,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1234 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-23 03:32:11,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46566 states. [2022-11-23 03:32:11,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46566 to 46566. [2022-11-23 03:32:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46566 states, 46565 states have (on average 1.1030817137334907) internal successors, (51365), 46565 states have internal predecessors, (51365), 0 states have call successors, (0), 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 03:32:12,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46566 states to 46566 states and 51365 transitions. [2022-11-23 03:32:12,012 INFO L78 Accepts]: Start accepts. Automaton has 46566 states and 51365 transitions. Word has length 352 [2022-11-23 03:32:12,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:32:12,013 INFO L495 AbstractCegarLoop]: Abstraction has 46566 states and 51365 transitions. [2022-11-23 03:32:12,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 03:32:12,013 INFO L276 IsEmpty]: Start isEmpty. Operand 46566 states and 51365 transitions. [2022-11-23 03:32:12,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-11-23 03:32:12,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:32:12,024 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:32:12,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 03:32:12,024 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:32:12,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:32:12,025 INFO L85 PathProgramCache]: Analyzing trace with hash -546201483, now seen corresponding path program 1 times [2022-11-23 03:32:12,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:32:12,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850696235] [2022-11-23 03:32:12,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:32:12,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:32:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:32:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-23 03:32:12,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:32:12,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850696235] [2022-11-23 03:32:12,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850696235] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:32:12,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114285358] [2022-11-23 03:32:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:32:12,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:32:12,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:32:12,796 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:32:12,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:32:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:32:12,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 03:32:12,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:32:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-23 03:32:13,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:32:13,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114285358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:32:13,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:32:13,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-23 03:32:13,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992844915] [2022-11-23 03:32:13,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:32:13,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:32:13,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:32:13,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:32:13,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:32:13,570 INFO L87 Difference]: Start difference. First operand 46566 states and 51365 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 2 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:32:17,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:32:17,635 INFO L93 Difference]: Finished difference Result 113407 states and 125782 transitions. [2022-11-23 03:32:17,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:32:17,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 2 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 358 [2022-11-23 03:32:17,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:32:17,719 INFO L225 Difference]: With dead ends: 113407 [2022-11-23 03:32:17,720 INFO L226 Difference]: Without dead ends: 67594 [2022-11-23 03:32:17,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:32:17,753 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 484 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 2820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:32:17,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 507 Invalid, 2820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-23 03:32:17,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67594 states. [2022-11-23 03:32:18,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67594 to 64590. [2022-11-23 03:32:18,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64590 states, 64589 states have (on average 1.0923377045626965) internal successors, (70553), 64589 states have internal predecessors, (70553), 0 states have call successors, (0), 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 03:32:19,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64590 states to 64590 states and 70553 transitions. [2022-11-23 03:32:19,012 INFO L78 Accepts]: Start accepts. Automaton has 64590 states and 70553 transitions. Word has length 358 [2022-11-23 03:32:19,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:32:19,013 INFO L495 AbstractCegarLoop]: Abstraction has 64590 states and 70553 transitions. [2022-11-23 03:32:19,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 2 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:32:19,013 INFO L276 IsEmpty]: Start isEmpty. Operand 64590 states and 70553 transitions. [2022-11-23 03:32:19,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-11-23 03:32:19,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:32:19,053 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 03:32:19,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 03:32:19,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 03:32:19,254 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:32:19,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:32:19,255 INFO L85 PathProgramCache]: Analyzing trace with hash -882090276, now seen corresponding path program 1 times [2022-11-23 03:32:19,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:32:19,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726239368] [2022-11-23 03:32:19,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:32:19,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:32:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:32:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 336 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:32:20,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:32:20,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726239368] [2022-11-23 03:32:20,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726239368] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:32:20,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424594659] [2022-11-23 03:32:20,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:32:20,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:32:20,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:32:20,915 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:32:20,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:32:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:32:21,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:32:21,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:32:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-23 03:32:22,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:32:22,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424594659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:32:22,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:32:22,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-11-23 03:32:22,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801168557] [2022-11-23 03:32:22,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:32:22,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:32:22,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:32:22,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:32:22,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:32:22,965 INFO L87 Difference]: Start difference. First operand 64590 states and 70553 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 03:32:28,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:32:30,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:32:32,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:32:37,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:32:39,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:32:42,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:32:45,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:32:49,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:32:54,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:32:57,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:33:00,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:33:01,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:33:03,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:33:05,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:33:06,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:33:09,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:33:11,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:33:13,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:33:15,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:33:17,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:33:19,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:33:34,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:33:38,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:33:40,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:33:43,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:33:45,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:33:47,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:33:47,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:33:47,905 INFO L93 Difference]: Finished difference Result 179497 states and 197106 transitions. [2022-11-23 03:33:47,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:33:47,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 384 [2022-11-23 03:33:47,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:33:48,047 INFO L225 Difference]: With dead ends: 179497 [2022-11-23 03:33:48,048 INFO L226 Difference]: Without dead ends: 115660 [2022-11-23 03:33:48,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:33:48,082 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 1786 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4849 mSolverCounterSat, 503 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 5362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 4849 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:33:48,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1786 Valid, 45 Invalid, 5362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 4849 Invalid, 10 Unknown, 0 Unchecked, 84.0s Time] [2022-11-23 03:33:48,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115660 states. [2022-11-23 03:33:49,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115660 to 115658. [2022-11-23 03:33:49,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115658 states, 115657 states have (on average 1.091096950465601) internal successors, (126193), 115657 states have internal predecessors, (126193), 0 states have call successors, (0), 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 03:33:50,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115658 states to 115658 states and 126193 transitions. [2022-11-23 03:33:50,260 INFO L78 Accepts]: Start accepts. Automaton has 115658 states and 126193 transitions. Word has length 384 [2022-11-23 03:33:50,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:33:50,261 INFO L495 AbstractCegarLoop]: Abstraction has 115658 states and 126193 transitions. [2022-11-23 03:33:50,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 03:33:50,262 INFO L276 IsEmpty]: Start isEmpty. Operand 115658 states and 126193 transitions. [2022-11-23 03:33:50,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2022-11-23 03:33:50,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:33:50,271 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:33:50,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:33:50,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61128e4f-adbe-4f1e-8765-e8f66588b343/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 03:33:50,477 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:33:50,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:33:50,478 INFO L85 PathProgramCache]: Analyzing trace with hash 669929638, now seen corresponding path program 1 times [2022-11-23 03:33:50,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:33:50,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942610713] [2022-11-23 03:33:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:33:50,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:33:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:33:51,611 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 437 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-23 03:33:51,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:33:51,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942610713] [2022-11-23 03:33:51,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942610713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:33:51,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:33:51,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:33:51,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881290748] [2022-11-23 03:33:51,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:33:51,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:33:51,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:33:51,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:33:51,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:33:51,614 INFO L87 Difference]: Start difference. First operand 115658 states and 126193 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 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 03:33:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:33:56,352 INFO L93 Difference]: Finished difference Result 258350 states and 281595 transitions. [2022-11-23 03:33:56,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:33:56,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 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 467 [2022-11-23 03:33:56,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:33:56,650 INFO L225 Difference]: With dead ends: 258350 [2022-11-23 03:33:56,651 INFO L226 Difference]: Without dead ends: 143445 [2022-11-23 03:33:56,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:33:56,806 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 788 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2137 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 2732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 2137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:33:56,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 904 Invalid, 2732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 2137 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-23 03:33:56,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143445 states. [2022-11-23 03:33:58,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143445 to 132931. [2022-11-23 03:33:59,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132931 states, 132930 states have (on average 1.0828105017678478) internal successors, (143938), 132930 states have internal predecessors, (143938), 0 states have call successors, (0), 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 03:33:59,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132931 states to 132931 states and 143938 transitions. [2022-11-23 03:33:59,283 INFO L78 Accepts]: Start accepts. Automaton has 132931 states and 143938 transitions. Word has length 467 [2022-11-23 03:33:59,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:33:59,284 INFO L495 AbstractCegarLoop]: Abstraction has 132931 states and 143938 transitions. [2022-11-23 03:33:59,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 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 03:33:59,284 INFO L276 IsEmpty]: Start isEmpty. Operand 132931 states and 143938 transitions. [2022-11-23 03:33:59,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2022-11-23 03:33:59,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:33:59,297 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:33:59,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 03:33:59,298 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:33:59,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:33:59,298 INFO L85 PathProgramCache]: Analyzing trace with hash 780393461, now seen corresponding path program 1 times [2022-11-23 03:33:59,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:33:59,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144488783] [2022-11-23 03:33:59,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:33:59,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:33:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:33:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 705 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-23 03:33:59,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:33:59,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144488783] [2022-11-23 03:33:59,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144488783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:33:59,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:33:59,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:33:59,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288182224] [2022-11-23 03:33:59,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:33:59,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:33:59,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:00,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:34:00,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:34:00,000 INFO L87 Difference]: Start difference. First operand 132931 states and 143938 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 03:34:05,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:34:05,780 INFO L93 Difference]: Finished difference Result 325189 states and 353358 transitions. [2022-11-23 03:34:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:34:05,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 519 [2022-11-23 03:34:05,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:34:06,023 INFO L225 Difference]: With dead ends: 325189 [2022-11-23 03:34:06,023 INFO L226 Difference]: Without dead ends: 193011 [2022-11-23 03:34:06,083 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 03:34:06,083 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 717 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 2956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:34:06,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 584 Invalid, 2956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-23 03:34:06,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193011 states. [2022-11-23 03:34:08,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193011 to 187003. [2022-11-23 03:34:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187003 states, 187002 states have (on average 1.0789456797253505) internal successors, (201765), 187002 states have internal predecessors, (201765), 0 states have call successors, (0), 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 03:34:08,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187003 states to 187003 states and 201765 transitions. [2022-11-23 03:34:08,935 INFO L78 Accepts]: Start accepts. Automaton has 187003 states and 201765 transitions. Word has length 519 [2022-11-23 03:34:08,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:34:08,935 INFO L495 AbstractCegarLoop]: Abstraction has 187003 states and 201765 transitions. [2022-11-23 03:34:08,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 03:34:08,936 INFO L276 IsEmpty]: Start isEmpty. Operand 187003 states and 201765 transitions. [2022-11-23 03:34:08,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2022-11-23 03:34:08,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:34:08,951 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:08,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 03:34:08,951 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:34:08,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:08,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1271116698, now seen corresponding path program 1 times [2022-11-23 03:34:08,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:08,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830614556] [2022-11-23 03:34:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:08,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:09,682 INFO L134 CoverageAnalysis]: Checked inductivity of 986 backedges. 756 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-23 03:34:09,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:09,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830614556] [2022-11-23 03:34:09,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830614556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:09,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:09,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:34:09,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556265185] [2022-11-23 03:34:09,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:09,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:34:09,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:09,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:34:09,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:34:09,686 INFO L87 Difference]: Start difference. First operand 187003 states and 201765 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 03:34:16,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:34:16,005 INFO L93 Difference]: Finished difference Result 425072 states and 460275 transitions. [2022-11-23 03:34:16,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:34:16,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 521 [2022-11-23 03:34:16,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:34:16,299 INFO L225 Difference]: With dead ends: 425072 [2022-11-23 03:34:16,299 INFO L226 Difference]: Without dead ends: 238822 [2022-11-23 03:34:16,382 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 03:34:16,383 INFO L413 NwaCegarLoop]: 1295 mSDtfsCounter, 688 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:34:16,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 1303 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-23 03:34:16,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238822 states. [2022-11-23 03:34:19,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238822 to 225304. [2022-11-23 03:34:19,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225304 states, 225303 states have (on average 1.0735365263667151) internal successors, (241871), 225303 states have internal predecessors, (241871), 0 states have call successors, (0), 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 03:34:20,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225304 states to 225304 states and 241871 transitions. [2022-11-23 03:34:20,482 INFO L78 Accepts]: Start accepts. Automaton has 225304 states and 241871 transitions. Word has length 521 [2022-11-23 03:34:20,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:34:20,483 INFO L495 AbstractCegarLoop]: Abstraction has 225304 states and 241871 transitions. [2022-11-23 03:34:20,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 03:34:20,484 INFO L276 IsEmpty]: Start isEmpty. Operand 225304 states and 241871 transitions. [2022-11-23 03:34:20,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2022-11-23 03:34:20,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:34:20,511 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 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 03:34:20,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 03:34:20,511 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:34:20,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:20,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1404141352, now seen corresponding path program 1 times [2022-11-23 03:34:20,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:20,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859664568] [2022-11-23 03:34:20,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:20,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:20,926 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 712 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-23 03:34:20,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:20,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859664568] [2022-11-23 03:34:20,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859664568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:20,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:20,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:34:20,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200047307] [2022-11-23 03:34:20,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:20,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:34:20,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:20,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:34:20,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:34:20,929 INFO L87 Difference]: Start difference. First operand 225304 states and 241871 transitions. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 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 03:34:26,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:34:26,630 INFO L93 Difference]: Finished difference Result 454361 states and 487523 transitions. [2022-11-23 03:34:26,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:34:26,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 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 537 [2022-11-23 03:34:26,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:34:26,992 INFO L225 Difference]: With dead ends: 454361 [2022-11-23 03:34:26,992 INFO L226 Difference]: Without dead ends: 229810 [2022-11-23 03:34:27,121 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 03:34:27,122 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 761 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 2636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-23 03:34:27,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 232 Invalid, 2636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-23 03:34:27,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229810 states. [2022-11-23 03:34:29,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229810 to 223051. [2022-11-23 03:34:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223051 states, 223050 states have (on average 1.0647747141896435) internal successors, (237498), 223050 states have internal predecessors, (237498), 0 states have call successors, (0), 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 03:34:30,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223051 states to 223051 states and 237498 transitions. [2022-11-23 03:34:30,274 INFO L78 Accepts]: Start accepts. Automaton has 223051 states and 237498 transitions. Word has length 537 [2022-11-23 03:34:30,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:34:30,274 INFO L495 AbstractCegarLoop]: Abstraction has 223051 states and 237498 transitions. [2022-11-23 03:34:30,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 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 03:34:30,275 INFO L276 IsEmpty]: Start isEmpty. Operand 223051 states and 237498 transitions. [2022-11-23 03:34:30,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2022-11-23 03:34:30,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:34:30,875 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-11-23 03:34:30,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 03:34:30,875 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:34:30,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:30,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1368403669, now seen corresponding path program 1 times [2022-11-23 03:34:30,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:30,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925721458] [2022-11-23 03:34:30,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:30,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:31,498 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 748 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-11-23 03:34:31,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:31,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925721458] [2022-11-23 03:34:31,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925721458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:31,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:31,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:34:31,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471842818] [2022-11-23 03:34:31,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:31,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:34:31,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:31,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:34:31,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:34:31,502 INFO L87 Difference]: Start difference. First operand 223051 states and 237498 transitions. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 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 03:34:37,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:34:37,310 INFO L93 Difference]: Finished difference Result 475389 states and 507740 transitions. [2022-11-23 03:34:37,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:34:37,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 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 559 [2022-11-23 03:34:37,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:34:37,627 INFO L225 Difference]: With dead ends: 475389 [2022-11-23 03:34:37,627 INFO L226 Difference]: Without dead ends: 253091 [2022-11-23 03:34:38,241 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 03:34:38,241 INFO L413 NwaCegarLoop]: 1276 mSDtfsCounter, 647 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:34:38,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1284 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-23 03:34:38,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253091 states.