./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN --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 4fb12138b73b283c9fdc444b2c9ebb4aa3340005d69e98d463fd0b0beb9c1e74 --- 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-6b4ec56 [2022-11-20 12:19:10,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:19:10,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:19:10,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:19:10,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:19:10,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:19:10,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:19:10,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:19:10,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:19:10,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:19:10,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:19:10,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:19:10,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:19:10,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:19:10,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:19:10,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:19:10,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:19:10,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:19:10,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:19:10,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:19:10,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:19:10,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:19:10,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:19:10,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:19:10,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:19:10,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:19:10,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:19:10,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:19:10,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:19:10,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:19:10,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:19:10,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:19:10,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:19:10,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:19:10,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:19:10,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:19:10,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:19:10,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:19:10,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:19:10,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:19:10,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:19:10,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:19:10,526 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:19:10,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:19:10,528 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:19:10,528 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:19:10,529 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:19:10,530 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:19:10,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:19:10,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:19:10,532 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:19:10,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:19:10,534 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:19:10,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:19:10,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:19:10,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:19:10,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:19:10,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:19:10,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:19:10,537 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:19:10,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:19:10,537 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:19:10,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:19:10,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:19:10,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:19:10,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:19:10,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:19:10,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:19:10,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:19:10,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:19:10,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:19:10,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:19:10,542 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:19:10,543 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:19:10,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:19:10,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fb12138b73b283c9fdc444b2c9ebb4aa3340005d69e98d463fd0b0beb9c1e74 [2022-11-20 12:19:10,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:19:10,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:19:10,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:19:10,989 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:19:10,989 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:19:10,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2022-11-20 12:19:15,084 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:19:15,513 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:19:15,514 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2022-11-20 12:19:15,539 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/data/54a9b1370/63c9d4bd0eba4adfacaf9dbe0ecac110/FLAG6d26eb376 [2022-11-20 12:19:15,559 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/data/54a9b1370/63c9d4bd0eba4adfacaf9dbe0ecac110 [2022-11-20 12:19:15,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:19:15,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:19:15,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:19:15,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:19:15,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:19:15,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:19:15" (1/1) ... [2022-11-20 12:19:15,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7132b910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:15, skipping insertion in model container [2022-11-20 12:19:15,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:19:15" (1/1) ... [2022-11-20 12:19:15,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:19:15,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:19:16,373 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_173d8f5b-a906-4448-bf20-1e49a589a616/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c[32786,32799] [2022-11-20 12:19:16,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:19:16,512 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:19:16,665 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_173d8f5b-a906-4448-bf20-1e49a589a616/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c[32786,32799] [2022-11-20 12:19:16,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:19:16,853 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:19:16,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:16 WrapperNode [2022-11-20 12:19:16,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:19:16,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:19:16,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:19:16,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:19:16,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:16" (1/1) ... [2022-11-20 12:19:16,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:16" (1/1) ... [2022-11-20 12:19:16,976 INFO L138 Inliner]: procedures = 128, calls = 209, calls flagged for inlining = 54, calls inlined = 45, statements flattened = 861 [2022-11-20 12:19:16,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:19:16,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:19:16,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:19:16,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:19:16,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:16" (1/1) ... [2022-11-20 12:19:16,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:16" (1/1) ... [2022-11-20 12:19:17,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:16" (1/1) ... [2022-11-20 12:19:17,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:16" (1/1) ... [2022-11-20 12:19:17,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:16" (1/1) ... [2022-11-20 12:19:17,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:16" (1/1) ... [2022-11-20 12:19:17,046 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:16" (1/1) ... [2022-11-20 12:19:17,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:16" (1/1) ... [2022-11-20 12:19:17,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:19:17,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:19:17,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:19:17,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:19:17,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:16" (1/1) ... [2022-11-20 12:19:17,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:19:17,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:19:17,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:19:17,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:19:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-20 12:19:17,217 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-20 12:19:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-20 12:19:17,217 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-20 12:19:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-20 12:19:17,218 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-20 12:19:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 12:19:17,218 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 12:19:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 12:19:17,218 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 12:19:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-20 12:19:17,219 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-20 12:19:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 12:19:17,219 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 12:19:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-20 12:19:17,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-20 12:19:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-20 12:19:17,220 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-20 12:19:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 12:19:17,221 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 12:19:17,221 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 12:19:17,221 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-20 12:19:17,221 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-20 12:19:17,221 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 12:19:17,222 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 12:19:17,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:19:17,222 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-20 12:19:17,222 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-20 12:19:17,223 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-20 12:19:17,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-20 12:19:17,223 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 12:19:17,223 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 12:19:17,223 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 12:19:17,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 12:19:17,224 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 12:19:17,224 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 12:19:17,224 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-11-20 12:19:17,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-11-20 12:19:17,225 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-20 12:19:17,225 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-20 12:19:17,225 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 12:19:17,225 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 12:19:17,225 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-20 12:19:17,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-20 12:19:17,226 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 12:19:17,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 12:19:17,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:19:17,230 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 12:19:17,230 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 12:19:17,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:19:17,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:19:17,607 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:19:17,626 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:19:18,973 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:19:19,005 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:19:19,009 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 12:19:19,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:19:19 BoogieIcfgContainer [2022-11-20 12:19:19,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:19:19,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:19:19,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:19:19,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:19:19,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:19:15" (1/3) ... [2022-11-20 12:19:19,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4d49b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:19:19, skipping insertion in model container [2022-11-20 12:19:19,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:16" (2/3) ... [2022-11-20 12:19:19,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4d49b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:19:19, skipping insertion in model container [2022-11-20 12:19:19,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:19:19" (3/3) ... [2022-11-20 12:19:19,032 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product28.cil.c [2022-11-20 12:19:19,061 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:19:19,061 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:19:19,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:19:19,188 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;@38b98b35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:19:19,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:19:19,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 258 states have (on average 1.5193798449612403) internal successors, (392), 262 states have internal predecessors, (392), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-20 12:19:19,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-20 12:19:19,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:19,233 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-20 12:19:19,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:19,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:19,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1749849167, now seen corresponding path program 1 times [2022-11-20 12:19:19,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:19,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770295237] [2022-11-20 12:19:19,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:19,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:19:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:19:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:19:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:19:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 12:19:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:19:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 12:19:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 12:19:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:19:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 12:19:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 12:19:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 12:19:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 12:19:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-20 12:19:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:19:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 12:19:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-20 12:19:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 12:19:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-20 12:19:20,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:20,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770295237] [2022-11-20 12:19:20,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770295237] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:19:20,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980705736] [2022-11-20 12:19:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:20,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:19:20,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:19:20,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:19:20,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:19:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:21,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 12:19:21,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:19:21,063 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 12:19:21,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:19:21,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980705736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:21,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:19:21,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-11-20 12:19:21,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406941050] [2022-11-20 12:19:21,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:21,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:19:21,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:21,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:19:21,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:19:21,118 INFO L87 Difference]: Start difference. First operand has 334 states, 258 states have (on average 1.5193798449612403) internal successors, (392), 262 states have internal predecessors, (392), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:19:21,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:21,196 INFO L93 Difference]: Finished difference Result 519 states and 750 transitions. [2022-11-20 12:19:21,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:19:21,199 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2022-11-20 12:19:21,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:21,216 INFO L225 Difference]: With dead ends: 519 [2022-11-20 12:19:21,216 INFO L226 Difference]: Without dead ends: 327 [2022-11-20 12:19:21,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:19:21,234 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:21,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:19:21,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-20 12:19:21,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2022-11-20 12:19:21,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 252 states have (on average 1.5119047619047619) internal successors, (381), 255 states have internal predecessors, (381), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-20 12:19:21,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 482 transitions. [2022-11-20 12:19:21,364 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 482 transitions. Word has length 139 [2022-11-20 12:19:21,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:21,368 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 482 transitions. [2022-11-20 12:19:21,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:19:21,369 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 482 transitions. [2022-11-20 12:19:21,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-20 12:19:21,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:21,376 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-20 12:19:21,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:19:21,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 12:19:21,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:21,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:21,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1360645034, now seen corresponding path program 1 times [2022-11-20 12:19:21,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:21,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805004282] [2022-11-20 12:19:21,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:21,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:19:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:19:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:19:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:19:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 12:19:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:19:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 12:19:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 12:19:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 12:19:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 12:19:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 12:19:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 12:19:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:19:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 12:19:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:19:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 12:19:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 12:19:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 12:19:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-20 12:19:22,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:22,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805004282] [2022-11-20 12:19:22,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805004282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:19:22,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072419671] [2022-11-20 12:19:22,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:22,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:19:22,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:19:22,252 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:19:22,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:19:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:22,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:19:22,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:19:22,736 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 12:19:22,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:19:22,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072419671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:22,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:19:22,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-20 12:19:22,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806007217] [2022-11-20 12:19:22,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:22,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:19:22,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:22,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:19:22,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:19:22,741 INFO L87 Difference]: Start difference. First operand 327 states and 482 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:19:22,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:22,803 INFO L93 Difference]: Finished difference Result 509 states and 731 transitions. [2022-11-20 12:19:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:19:22,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 140 [2022-11-20 12:19:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:22,809 INFO L225 Difference]: With dead ends: 509 [2022-11-20 12:19:22,810 INFO L226 Difference]: Without dead ends: 330 [2022-11-20 12:19:22,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:19:22,814 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:22,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 958 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:19:22,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-20 12:19:22,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 329. [2022-11-20 12:19:22,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 254 states have (on average 1.5078740157480315) internal successors, (383), 257 states have internal predecessors, (383), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-20 12:19:22,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 484 transitions. [2022-11-20 12:19:22,850 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 484 transitions. Word has length 140 [2022-11-20 12:19:22,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:22,851 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 484 transitions. [2022-11-20 12:19:22,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:19:22,851 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 484 transitions. [2022-11-20 12:19:22,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-20 12:19:22,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:22,856 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:22,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:19:23,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-20 12:19:23,065 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:23,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:23,065 INFO L85 PathProgramCache]: Analyzing trace with hash 440032415, now seen corresponding path program 1 times [2022-11-20 12:19:23,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:23,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550802779] [2022-11-20 12:19:23,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:23,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:19:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:19:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:19:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:19:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 12:19:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:19:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 12:19:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:19:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 12:19:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 12:19:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 12:19:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:19:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 12:19:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 12:19:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:19:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-20 12:19:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 12:19:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-20 12:19:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 12:19:23,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:23,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550802779] [2022-11-20 12:19:23,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550802779] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:19:23,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120221066] [2022-11-20 12:19:23,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:23,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:19:23,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:19:23,564 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:19:23,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:19:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:23,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:19:24,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:19:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 12:19:24,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:19:24,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120221066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:24,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:19:24,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-20 12:19:24,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684860911] [2022-11-20 12:19:24,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:24,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:19:24,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:24,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:19:24,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:19:24,049 INFO L87 Difference]: Start difference. First operand 329 states and 484 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:19:24,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:24,101 INFO L93 Difference]: Finished difference Result 683 states and 1019 transitions. [2022-11-20 12:19:24,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:19:24,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2022-11-20 12:19:24,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:24,116 INFO L225 Difference]: With dead ends: 683 [2022-11-20 12:19:24,116 INFO L226 Difference]: Without dead ends: 381 [2022-11-20 12:19:24,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:19:24,120 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 99 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:24,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 934 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:19:24,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-11-20 12:19:24,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 373. [2022-11-20 12:19:24,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 287 states have (on average 1.5226480836236933) internal successors, (437), 290 states have internal predecessors, (437), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-20 12:19:24,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 560 transitions. [2022-11-20 12:19:24,197 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 560 transitions. Word has length 146 [2022-11-20 12:19:24,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:24,198 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 560 transitions. [2022-11-20 12:19:24,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:19:24,199 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 560 transitions. [2022-11-20 12:19:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-20 12:19:24,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:24,209 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:24,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:19:24,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:19:24,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:24,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:24,423 INFO L85 PathProgramCache]: Analyzing trace with hash -782479930, now seen corresponding path program 1 times [2022-11-20 12:19:24,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:24,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437165170] [2022-11-20 12:19:24,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:24,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:19:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:19:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:19:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 12:19:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 12:19:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:19:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 12:19:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:19:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 12:19:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 12:19:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 12:19:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-20 12:19:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-20 12:19:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 12:19:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:19:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 12:19:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 12:19:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-20 12:19:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:24,808 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 12:19:24,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:24,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437165170] [2022-11-20 12:19:24,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437165170] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:19:24,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17342194] [2022-11-20 12:19:24,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:24,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:19:24,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:19:24,811 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:19:24,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:19:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:25,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:19:25,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:19:25,387 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 12:19:25,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:19:25,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17342194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:25,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:19:25,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-20 12:19:25,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94378688] [2022-11-20 12:19:25,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:25,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:19:25,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:25,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:19:25,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:19:25,391 INFO L87 Difference]: Start difference. First operand 373 states and 560 transitions. Second operand has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 12:19:25,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:25,508 INFO L93 Difference]: Finished difference Result 737 states and 1110 transitions. [2022-11-20 12:19:25,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:19:25,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 147 [2022-11-20 12:19:25,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:25,514 INFO L225 Difference]: With dead ends: 737 [2022-11-20 12:19:25,514 INFO L226 Difference]: Without dead ends: 375 [2022-11-20 12:19:25,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:19:25,523 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 117 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:25,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1755 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:19:25,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-20 12:19:25,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2022-11-20 12:19:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 288 states have (on average 1.5208333333333333) internal successors, (438), 292 states have internal predecessors, (438), 62 states have call successors, (62), 23 states have call predecessors, (62), 24 states have return successors, (63), 61 states have call predecessors, (63), 61 states have call successors, (63) [2022-11-20 12:19:25,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 563 transitions. [2022-11-20 12:19:25,573 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 563 transitions. Word has length 147 [2022-11-20 12:19:25,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:25,573 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 563 transitions. [2022-11-20 12:19:25,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 12:19:25,574 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 563 transitions. [2022-11-20 12:19:25,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-20 12:19:25,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:25,584 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-11-20 12:19:25,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 12:19:25,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:19:25,792 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:25,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:25,793 INFO L85 PathProgramCache]: Analyzing trace with hash -860675365, now seen corresponding path program 1 times [2022-11-20 12:19:25,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:25,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799386945] [2022-11-20 12:19:25,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:25,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:19:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:19:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:19:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:19:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 12:19:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:19:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 12:19:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 12:19:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 12:19:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 12:19:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 12:19:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 12:19:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 12:19:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 12:19:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:19:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 12:19:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-20 12:19:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-20 12:19:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,254 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 12:19:26,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:26,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799386945] [2022-11-20 12:19:26,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799386945] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:19:26,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478871312] [2022-11-20 12:19:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:26,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:19:26,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:19:26,259 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:19:26,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:19:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:26,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1189 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:19:26,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:19:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 12:19:26,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:19:26,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478871312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:26,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:19:26,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-11-20 12:19:26,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488974393] [2022-11-20 12:19:26,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:26,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:19:26,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:26,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:19:26,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:19:26,762 INFO L87 Difference]: Start difference. First operand 375 states and 563 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 12:19:26,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:26,871 INFO L93 Difference]: Finished difference Result 739 states and 1115 transitions. [2022-11-20 12:19:26,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:19:26,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 148 [2022-11-20 12:19:26,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:26,875 INFO L225 Difference]: With dead ends: 739 [2022-11-20 12:19:26,876 INFO L226 Difference]: Without dead ends: 377 [2022-11-20 12:19:26,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:19:26,879 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 116 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:26,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1744 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:19:26,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-20 12:19:26,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-11-20 12:19:26,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 289 states have (on average 1.519031141868512) internal successors, (439), 294 states have internal predecessors, (439), 62 states have call successors, (62), 23 states have call predecessors, (62), 25 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2022-11-20 12:19:26,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 569 transitions. [2022-11-20 12:19:26,917 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 569 transitions. Word has length 148 [2022-11-20 12:19:26,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:26,918 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 569 transitions. [2022-11-20 12:19:26,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 12:19:26,919 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 569 transitions. [2022-11-20 12:19:26,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-20 12:19:26,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:26,925 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:26,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 12:19:27,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:19:27,133 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:27,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:27,134 INFO L85 PathProgramCache]: Analyzing trace with hash -331605216, now seen corresponding path program 1 times [2022-11-20 12:19:27,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:27,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924071028] [2022-11-20 12:19:27,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:27,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:19:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:19:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:19:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:19:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:19:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 12:19:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 12:19:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 12:19:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 12:19:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 12:19:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-20 12:19:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 12:19:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-20 12:19:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 12:19:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:19:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-20 12:19:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-20 12:19:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 12:19:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,518 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 12:19:27,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:27,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924071028] [2022-11-20 12:19:27,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924071028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:27,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:27,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:19:27,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288939202] [2022-11-20 12:19:27,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:27,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:19:27,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:27,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:19:27,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:19:27,523 INFO L87 Difference]: Start difference. First operand 377 states and 569 transitions. Second operand has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 12:19:30,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:30,004 INFO L93 Difference]: Finished difference Result 804 states and 1220 transitions. [2022-11-20 12:19:30,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:19:30,005 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 149 [2022-11-20 12:19:30,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:30,009 INFO L225 Difference]: With dead ends: 804 [2022-11-20 12:19:30,040 INFO L226 Difference]: Without dead ends: 450 [2022-11-20 12:19:30,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:19:30,047 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 967 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1780 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 2077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 1780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:30,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 814 Invalid, 2077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 1780 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 12:19:30,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-20 12:19:30,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 377. [2022-11-20 12:19:30,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 289 states have (on average 1.519031141868512) internal successors, (439), 294 states have internal predecessors, (439), 62 states have call successors, (62), 23 states have call predecessors, (62), 25 states have return successors, (67), 61 states have call predecessors, (67), 61 states have call successors, (67) [2022-11-20 12:19:30,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 568 transitions. [2022-11-20 12:19:30,109 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 568 transitions. Word has length 149 [2022-11-20 12:19:30,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:30,110 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 568 transitions. [2022-11-20 12:19:30,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 12:19:30,110 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 568 transitions. [2022-11-20 12:19:30,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-20 12:19:30,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:30,116 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-20 12:19:30,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:19:30,116 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:30,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:30,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1164230253, now seen corresponding path program 2 times [2022-11-20 12:19:30,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:30,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925648627] [2022-11-20 12:19:30,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:30,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:19:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:19:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:19:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:19:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:19:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:19:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 12:19:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 12:19:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:19:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 12:19:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-20 12:19:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 12:19:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 12:19:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 12:19:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:19:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-20 12:19:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-20 12:19:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-20 12:19:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 12:19:30,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:30,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925648627] [2022-11-20 12:19:30,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925648627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:30,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:30,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:19:30,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703940294] [2022-11-20 12:19:30,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:30,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:19:30,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:30,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:19:30,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:19:30,457 INFO L87 Difference]: Start difference. First operand 377 states and 568 transitions. Second operand has 8 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 12:19:32,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:32,719 INFO L93 Difference]: Finished difference Result 806 states and 1223 transitions. [2022-11-20 12:19:32,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:19:32,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 150 [2022-11-20 12:19:32,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:32,725 INFO L225 Difference]: With dead ends: 806 [2022-11-20 12:19:32,725 INFO L226 Difference]: Without dead ends: 452 [2022-11-20 12:19:32,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:19:32,730 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 973 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:32,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 814 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 12:19:32,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-20 12:19:32,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 379. [2022-11-20 12:19:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 290 states have (on average 1.5172413793103448) internal successors, (440), 296 states have internal predecessors, (440), 62 states have call successors, (62), 23 states have call predecessors, (62), 26 states have return successors, (69), 61 states have call predecessors, (69), 61 states have call successors, (69) [2022-11-20 12:19:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 571 transitions. [2022-11-20 12:19:32,799 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 571 transitions. Word has length 150 [2022-11-20 12:19:32,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:32,799 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 571 transitions. [2022-11-20 12:19:32,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 12:19:32,800 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 571 transitions. [2022-11-20 12:19:32,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-20 12:19:32,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:32,804 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:32,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:19:32,804 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:32,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:32,805 INFO L85 PathProgramCache]: Analyzing trace with hash -896990777, now seen corresponding path program 1 times [2022-11-20 12:19:32,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:32,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325390996] [2022-11-20 12:19:32,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:32,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:19:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:19:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:19:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:19:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:19:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:19:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 12:19:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 12:19:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:19:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 12:19:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 12:19:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 12:19:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:19:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 12:19:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:19:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-20 12:19:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-20 12:19:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 12:19:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 12:19:33,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:33,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325390996] [2022-11-20 12:19:33,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325390996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:33,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:33,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:19:33,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208587866] [2022-11-20 12:19:33,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:33,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:19:33,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:33,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:19:33,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:19:33,128 INFO L87 Difference]: Start difference. First operand 379 states and 571 transitions. Second operand has 8 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 12:19:35,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:35,420 INFO L93 Difference]: Finished difference Result 806 states and 1222 transitions. [2022-11-20 12:19:35,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:19:35,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 151 [2022-11-20 12:19:35,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:35,426 INFO L225 Difference]: With dead ends: 806 [2022-11-20 12:19:35,426 INFO L226 Difference]: Without dead ends: 452 [2022-11-20 12:19:35,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:19:35,430 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 961 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:35,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 813 Invalid, 2074 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [296 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 12:19:35,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-20 12:19:35,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 379. [2022-11-20 12:19:35,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 290 states have (on average 1.5172413793103448) internal successors, (440), 296 states have internal predecessors, (440), 62 states have call successors, (62), 23 states have call predecessors, (62), 26 states have return successors, (69), 61 states have call predecessors, (69), 61 states have call successors, (69) [2022-11-20 12:19:35,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 571 transitions. [2022-11-20 12:19:35,490 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 571 transitions. Word has length 151 [2022-11-20 12:19:35,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:35,490 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 571 transitions. [2022-11-20 12:19:35,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 12:19:35,491 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 571 transitions. [2022-11-20 12:19:35,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-20 12:19:35,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:35,495 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:35,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:19:35,496 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:35,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:35,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1469044293, now seen corresponding path program 1 times [2022-11-20 12:19:35,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:35,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942150038] [2022-11-20 12:19:35,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:35,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:19:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:19:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:19:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:19:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:19:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:19:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 12:19:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 12:19:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:19:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 12:19:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 12:19:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 12:19:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:19:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 12:19:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:19:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-20 12:19:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-20 12:19:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 12:19:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 12:19:35,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:35,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942150038] [2022-11-20 12:19:35,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942150038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:35,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:35,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:19:35,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578493453] [2022-11-20 12:19:35,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:35,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:19:35,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:35,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:19:35,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:19:35,963 INFO L87 Difference]: Start difference. First operand 379 states and 571 transitions. Second operand has 11 states, 10 states have (on average 9.5) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-20 12:19:39,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:39,280 INFO L93 Difference]: Finished difference Result 804 states and 1217 transitions. [2022-11-20 12:19:39,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:19:39,281 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.5) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 151 [2022-11-20 12:19:39,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:39,285 INFO L225 Difference]: With dead ends: 804 [2022-11-20 12:19:39,285 INFO L226 Difference]: Without dead ends: 452 [2022-11-20 12:19:39,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:19:39,287 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1054 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 3119 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 3447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 3119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:39,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 1100 Invalid, 3447 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [328 Valid, 3119 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 12:19:39,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-20 12:19:39,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 379. [2022-11-20 12:19:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 290 states have (on average 1.5172413793103448) internal successors, (440), 296 states have internal predecessors, (440), 62 states have call successors, (62), 23 states have call predecessors, (62), 26 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2022-11-20 12:19:39,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 570 transitions. [2022-11-20 12:19:39,336 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 570 transitions. Word has length 151 [2022-11-20 12:19:39,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:39,336 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 570 transitions. [2022-11-20 12:19:39,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.5) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-20 12:19:39,337 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 570 transitions. [2022-11-20 12:19:39,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-20 12:19:39,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:39,341 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-20 12:19:39,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:19:39,342 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:39,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:39,342 INFO L85 PathProgramCache]: Analyzing trace with hash 2010311812, now seen corresponding path program 2 times [2022-11-20 12:19:39,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:39,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942486427] [2022-11-20 12:19:39,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:39,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:19:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:19:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:19:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:19:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:19:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:19:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 12:19:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 12:19:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 12:19:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 12:19:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:19:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 12:19:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-20 12:19:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-20 12:19:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:19:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 12:19:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-20 12:19:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 12:19:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:39,720 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 12:19:39,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:39,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942486427] [2022-11-20 12:19:39,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942486427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:39,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:39,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:19:39,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626271380] [2022-11-20 12:19:39,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:39,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:19:39,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:39,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:19:39,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:19:39,724 INFO L87 Difference]: Start difference. First operand 379 states and 570 transitions. Second operand has 11 states, 10 states have (on average 9.6) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-20 12:19:42,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:42,958 INFO L93 Difference]: Finished difference Result 806 states and 1223 transitions. [2022-11-20 12:19:42,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:19:42,959 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.6) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 152 [2022-11-20 12:19:42,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:42,963 INFO L225 Difference]: With dead ends: 806 [2022-11-20 12:19:42,963 INFO L226 Difference]: Without dead ends: 454 [2022-11-20 12:19:42,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:19:42,966 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1074 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 3060 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 3387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 3060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:42,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 1100 Invalid, 3387 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [327 Valid, 3060 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 12:19:42,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-11-20 12:19:43,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 381. [2022-11-20 12:19:43,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 291 states have (on average 1.5154639175257731) internal successors, (441), 298 states have internal predecessors, (441), 62 states have call successors, (62), 23 states have call predecessors, (62), 27 states have return successors, (73), 61 states have call predecessors, (73), 61 states have call successors, (73) [2022-11-20 12:19:43,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 576 transitions. [2022-11-20 12:19:43,020 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 576 transitions. Word has length 152 [2022-11-20 12:19:43,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:43,021 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 576 transitions. [2022-11-20 12:19:43,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.6) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-20 12:19:43,021 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 576 transitions. [2022-11-20 12:19:43,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-20 12:19:43,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:43,025 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:19:43,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:19:43,026 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:43,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:43,027 INFO L85 PathProgramCache]: Analyzing trace with hash -986725718, now seen corresponding path program 1 times [2022-11-20 12:19:43,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:43,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309204598] [2022-11-20 12:19:43,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:43,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:19:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:19:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:19:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:19:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:19:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:19:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 12:19:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 12:19:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 12:19:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 12:19:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-20 12:19:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-20 12:19:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:19:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 12:19:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:19:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 12:19:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-20 12:19:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 12:19:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,266 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-20 12:19:43,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:43,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309204598] [2022-11-20 12:19:43,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309204598] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:19:43,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776917661] [2022-11-20 12:19:43,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:43,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:19:43,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:19:43,271 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:19:43,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:19:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:43,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:19:43,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:19:43,749 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-20 12:19:43,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:19:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-20 12:19:43,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776917661] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:19:43,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:19:43,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-11-20 12:19:43,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344416489] [2022-11-20 12:19:43,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:19:43,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:19:43,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:43,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:19:43,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:19:43,965 INFO L87 Difference]: Start difference. First operand 381 states and 576 transitions. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (40), 5 states have call predecessors, (40), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 12:19:46,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:46,267 INFO L93 Difference]: Finished difference Result 960 states and 1521 transitions. [2022-11-20 12:19:46,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:19:46,268 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (40), 5 states have call predecessors, (40), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 153 [2022-11-20 12:19:46,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:46,274 INFO L225 Difference]: With dead ends: 960 [2022-11-20 12:19:46,275 INFO L226 Difference]: Without dead ends: 781 [2022-11-20 12:19:46,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:19:46,278 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 1307 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:46,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 1088 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 12:19:46,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2022-11-20 12:19:46,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 684. [2022-11-20 12:19:46,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 530 states have (on average 1.5830188679245283) internal successors, (839), 537 states have internal predecessors, (839), 126 states have call successors, (126), 23 states have call predecessors, (126), 27 states have return successors, (147), 125 states have call predecessors, (147), 125 states have call successors, (147) [2022-11-20 12:19:46,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1112 transitions. [2022-11-20 12:19:46,409 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1112 transitions. Word has length 153 [2022-11-20 12:19:46,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:46,410 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1112 transitions. [2022-11-20 12:19:46,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (40), 5 states have call predecessors, (40), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-20 12:19:46,411 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1112 transitions. [2022-11-20 12:19:46,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-20 12:19:46,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:46,419 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-20 12:19:46,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:19:46,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173d8f5b-a906-4448-bf20-1e49a589a616/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 12:19:46,629 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:46,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:46,629 INFO L85 PathProgramCache]: Analyzing trace with hash -194088249, now seen corresponding path program 1 times [2022-11-20 12:19:46,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:46,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638729971] [2022-11-20 12:19:46,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:46,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:19:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:19:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:19:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:19:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:19:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:19:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 12:19:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:19:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 12:19:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 12:19:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-20 12:19:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:19:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 12:19:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 12:19:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:19:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-20 12:19:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 12:19:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-20 12:19:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-20 12:19:46,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:46,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638729971] [2022-11-20 12:19:46,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638729971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:46,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:46,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:19:46,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716531073] [2022-11-20 12:19:46,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:46,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:46,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:46,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:46,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:46,864 INFO L87 Difference]: Start difference. First operand 684 states and 1112 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:19:48,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:48,879 INFO L93 Difference]: Finished difference Result 1681 states and 2800 transitions. [2022-11-20 12:19:48,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:48,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 159 [2022-11-20 12:19:48,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:48,891 INFO L225 Difference]: With dead ends: 1681 [2022-11-20 12:19:48,891 INFO L226 Difference]: Without dead ends: 1065 [2022-11-20 12:19:48,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:19:48,898 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 937 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:48,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 712 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 12:19:48,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2022-11-20 12:19:49,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 984. [2022-11-20 12:19:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 766 states have (on average 1.597911227154047) internal successors, (1224), 773 states have internal predecessors, (1224), 190 states have call successors, (190), 23 states have call predecessors, (190), 27 states have return successors, (221), 189 states have call predecessors, (221), 189 states have call successors, (221) [2022-11-20 12:19:49,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1635 transitions. [2022-11-20 12:19:49,061 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1635 transitions. Word has length 159 [2022-11-20 12:19:49,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:49,062 INFO L495 AbstractCegarLoop]: Abstraction has 984 states and 1635 transitions. [2022-11-20 12:19:49,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:19:49,063 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1635 transitions. [2022-11-20 12:19:49,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-20 12:19:49,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:49,071 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-20 12:19:49,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:19:49,072 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:49,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:49,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1989444475, now seen corresponding path program 1 times [2022-11-20 12:19:49,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:49,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999454174] [2022-11-20 12:19:49,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:49,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:19:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:19:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:19:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:19:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:19:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:19:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 12:19:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 12:19:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 12:19:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-20 12:19:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 12:19:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 12:19:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-20 12:19:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-20 12:19:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:19:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-20 12:19:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-20 12:19:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 12:19:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:49,275 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-20 12:19:49,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:49,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999454174] [2022-11-20 12:19:49,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999454174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:49,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:49,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:19:49,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744214581] [2022-11-20 12:19:49,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:49,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:49,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:49,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:49,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:49,281 INFO L87 Difference]: Start difference. First operand 984 states and 1635 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:19:51,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:51,150 INFO L93 Difference]: Finished difference Result 2396 states and 4045 transitions. [2022-11-20 12:19:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:51,151 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 160 [2022-11-20 12:19:51,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:51,170 INFO L225 Difference]: With dead ends: 2396 [2022-11-20 12:19:51,170 INFO L226 Difference]: Without dead ends: 1533 [2022-11-20 12:19:51,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:19:51,176 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 923 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:51,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 683 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 12:19:51,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2022-11-20 12:19:51,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1452. [2022-11-20 12:19:51,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1139 states have (on average 1.6075504828797191) internal successors, (1831), 1146 states have internal predecessors, (1831), 285 states have call successors, (285), 23 states have call predecessors, (285), 27 states have return successors, (316), 284 states have call predecessors, (316), 284 states have call successors, (316) [2022-11-20 12:19:51,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 2432 transitions. [2022-11-20 12:19:51,369 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 2432 transitions. Word has length 160 [2022-11-20 12:19:51,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:51,370 INFO L495 AbstractCegarLoop]: Abstraction has 1452 states and 2432 transitions. [2022-11-20 12:19:51,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:19:51,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 2432 transitions. [2022-11-20 12:19:51,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-20 12:19:51,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:51,384 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-20 12:19:51,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:19:51,384 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:51,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:51,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1091927209, now seen corresponding path program 1 times [2022-11-20 12:19:51,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:51,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312102284] [2022-11-20 12:19:51,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:51,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:19:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:19:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:19:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:19:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:19:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:19:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 12:19:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 12:19:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 12:19:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-20 12:19:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-20 12:19:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 12:19:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 12:19:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 12:19:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:19:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-20 12:19:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-20 12:19:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 12:19:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:51,583 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-20 12:19:51,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:51,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312102284] [2022-11-20 12:19:51,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312102284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:51,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:51,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:19:51,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309195257] [2022-11-20 12:19:51,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:51,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:51,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:51,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:51,588 INFO L87 Difference]: Start difference. First operand 1452 states and 2432 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:19:53,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:53,508 INFO L93 Difference]: Finished difference Result 3443 states and 5886 transitions. [2022-11-20 12:19:53,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:53,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 161 [2022-11-20 12:19:53,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:53,532 INFO L225 Difference]: With dead ends: 3443 [2022-11-20 12:19:53,532 INFO L226 Difference]: Without dead ends: 2237 [2022-11-20 12:19:53,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:19:53,539 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 927 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:53,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 659 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 12:19:53,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2022-11-20 12:19:53,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 2156. [2022-11-20 12:19:53,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 1720 states have (on average 1.6151162790697675) internal successors, (2778), 1727 states have internal predecessors, (2778), 408 states have call successors, (408), 23 states have call predecessors, (408), 27 states have return successors, (455), 407 states have call predecessors, (455), 407 states have call successors, (455) [2022-11-20 12:19:53,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 3641 transitions. [2022-11-20 12:19:53,797 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 3641 transitions. Word has length 161 [2022-11-20 12:19:53,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:53,798 INFO L495 AbstractCegarLoop]: Abstraction has 2156 states and 3641 transitions. [2022-11-20 12:19:53,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:19:53,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 3641 transitions. [2022-11-20 12:19:53,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-20 12:19:53,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:53,816 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-20 12:19:53,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:19:53,817 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:53,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:53,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1160293020, now seen corresponding path program 1 times [2022-11-20 12:19:53,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:53,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641257406] [2022-11-20 12:19:53,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:53,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:53,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:19:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:53,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:19:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:53,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:19:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:53,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:19:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:53,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:19:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:53,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:19:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:53,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 12:19:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:53,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 12:19:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:53,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 12:19:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:53,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 12:19:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:53,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 12:19:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:54,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 12:19:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:54,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 12:19:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:54,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 12:19:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:54,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:19:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:54,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 12:19:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-20 12:19:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:54,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 12:19:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:54,031 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-20 12:19:54,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:54,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641257406] [2022-11-20 12:19:54,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641257406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:54,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:54,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:19:54,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220211416] [2022-11-20 12:19:54,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:54,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:54,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:54,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:54,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:54,036 INFO L87 Difference]: Start difference. First operand 2156 states and 3641 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:19:56,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:56,088 INFO L93 Difference]: Finished difference Result 5062 states and 8740 transitions. [2022-11-20 12:19:56,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:56,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 162 [2022-11-20 12:19:56,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:56,114 INFO L225 Difference]: With dead ends: 5062 [2022-11-20 12:19:56,115 INFO L226 Difference]: Without dead ends: 3356 [2022-11-20 12:19:56,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:19:56,124 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 895 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:56,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 661 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 12:19:56,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3356 states. [2022-11-20 12:19:56,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3356 to 3275. [2022-11-20 12:19:56,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 2660 states have (on average 1.619924812030075) internal successors, (4309), 2667 states have internal predecessors, (4309), 587 states have call successors, (587), 23 states have call predecessors, (587), 27 states have return successors, (660), 586 states have call predecessors, (660), 586 states have call successors, (660) [2022-11-20 12:19:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 5556 transitions. [2022-11-20 12:19:56,628 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 5556 transitions. Word has length 162 [2022-11-20 12:19:56,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:56,628 INFO L495 AbstractCegarLoop]: Abstraction has 3275 states and 5556 transitions. [2022-11-20 12:19:56,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:19:56,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 5556 transitions. [2022-11-20 12:19:56,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-20 12:19:56,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:56,652 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-20 12:19:56,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:19:56,653 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:56,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:56,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2049543131, now seen corresponding path program 1 times [2022-11-20 12:19:56,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:56,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629718438] [2022-11-20 12:19:56,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:56,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:19:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:19:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:19:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:19:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:19:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:19:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 12:19:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 12:19:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 12:19:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:19:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:19:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 12:19:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-20 12:19:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-20 12:19:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:19:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-20 12:19:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-20 12:19:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-20 12:19:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-20 12:19:56,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:56,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629718438] [2022-11-20 12:19:56,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629718438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:19:56,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:19:56,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:19:56,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109725466] [2022-11-20 12:19:56,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:19:56,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:19:56,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:56,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:19:56,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:19:56,829 INFO L87 Difference]: Start difference. First operand 3275 states and 5556 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:19:58,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:58,925 INFO L93 Difference]: Finished difference Result 7980 states and 13839 transitions. [2022-11-20 12:19:58,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:19:58,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2022-11-20 12:19:58,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:19:58,962 INFO L225 Difference]: With dead ends: 7980 [2022-11-20 12:19:58,962 INFO L226 Difference]: Without dead ends: 5387 [2022-11-20 12:19:58,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:19:58,976 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 953 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:19:58,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 676 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 12:19:58,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5387 states. [2022-11-20 12:19:59,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5387 to 5306. [2022-11-20 12:19:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5306 states, 4315 states have (on average 1.613209733487833) internal successors, (6961), 4322 states have internal predecessors, (6961), 963 states have call successors, (963), 23 states have call predecessors, (963), 27 states have return successors, (1080), 962 states have call predecessors, (1080), 962 states have call successors, (1080) [2022-11-20 12:19:59,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5306 states to 5306 states and 9004 transitions. [2022-11-20 12:19:59,851 INFO L78 Accepts]: Start accepts. Automaton has 5306 states and 9004 transitions. Word has length 163 [2022-11-20 12:19:59,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:19:59,852 INFO L495 AbstractCegarLoop]: Abstraction has 5306 states and 9004 transitions. [2022-11-20 12:19:59,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:19:59,854 INFO L276 IsEmpty]: Start isEmpty. Operand 5306 states and 9004 transitions. [2022-11-20 12:19:59,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-20 12:19:59,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:19:59,910 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-20 12:19:59,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:19:59,910 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:19:59,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:59,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2045579040, now seen corresponding path program 1 times [2022-11-20 12:19:59,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:59,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006510731] [2022-11-20 12:19:59,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:59,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:20:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:20:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:20:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:20:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:20:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:20:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 12:20:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 12:20:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 12:20:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-20 12:20:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-20 12:20:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 12:20:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 12:20:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-20 12:20:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:20:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 12:20:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-20 12:20:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-20 12:20:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:00,107 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-20 12:20:00,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:00,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006510731] [2022-11-20 12:20:00,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006510731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:00,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:00,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:20:00,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576373639] [2022-11-20 12:20:00,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:00,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:20:00,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:00,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:20:00,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:20:00,112 INFO L87 Difference]: Start difference. First operand 5306 states and 9004 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:20:02,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:20:02,591 INFO L93 Difference]: Finished difference Result 13122 states and 22748 transitions. [2022-11-20 12:20:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:20:02,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 164 [2022-11-20 12:20:02,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:20:02,674 INFO L225 Difference]: With dead ends: 13122 [2022-11-20 12:20:02,674 INFO L226 Difference]: Without dead ends: 8875 [2022-11-20 12:20:02,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:20:02,695 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 933 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:20:02,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 660 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 12:20:02,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8875 states. [2022-11-20 12:20:04,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8875 to 8794. [2022-11-20 12:20:04,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8794 states, 7197 states have (on average 1.6110879533138809) internal successors, (11595), 7204 states have internal predecessors, (11595), 1569 states have call successors, (1569), 23 states have call predecessors, (1569), 27 states have return successors, (1764), 1568 states have call predecessors, (1764), 1568 states have call successors, (1764) [2022-11-20 12:20:04,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8794 states to 8794 states and 14928 transitions. [2022-11-20 12:20:04,076 INFO L78 Accepts]: Start accepts. Automaton has 8794 states and 14928 transitions. Word has length 164 [2022-11-20 12:20:04,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:20:04,077 INFO L495 AbstractCegarLoop]: Abstraction has 8794 states and 14928 transitions. [2022-11-20 12:20:04,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:20:04,078 INFO L276 IsEmpty]: Start isEmpty. Operand 8794 states and 14928 transitions. [2022-11-20 12:20:04,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-20 12:20:04,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:20:04,145 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-20 12:20:04,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:20:04,146 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:20:04,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:04,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1857828889, now seen corresponding path program 1 times [2022-11-20 12:20:04,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:04,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714696019] [2022-11-20 12:20:04,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:04,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:20:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:20:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:20:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:20:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:20:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:20:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 12:20:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 12:20:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 12:20:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 12:20:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:20:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 12:20:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 12:20:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-20 12:20:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:20:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 12:20:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-20 12:20:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-20 12:20:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-20 12:20:04,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:04,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714696019] [2022-11-20 12:20:04,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714696019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:04,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:04,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:20:04,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245925625] [2022-11-20 12:20:04,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:04,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:20:04,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:04,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:20:04,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:20:04,323 INFO L87 Difference]: Start difference. First operand 8794 states and 14928 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:20:07,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:20:07,363 INFO L93 Difference]: Finished difference Result 22781 states and 39454 transitions. [2022-11-20 12:20:07,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:20:07,364 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 165 [2022-11-20 12:20:07,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:20:07,451 INFO L225 Difference]: With dead ends: 22781 [2022-11-20 12:20:07,452 INFO L226 Difference]: Without dead ends: 15468 [2022-11-20 12:20:07,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:20:07,486 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 927 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:20:07,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 702 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 12:20:07,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15468 states. [2022-11-20 12:20:09,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15468 to 15387. [2022-11-20 12:20:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15387 states, 12587 states have (on average 1.6017319456582189) internal successors, (20161), 12594 states have internal predecessors, (20161), 2772 states have call successors, (2772), 23 states have call predecessors, (2772), 27 states have return successors, (3111), 2771 states have call predecessors, (3111), 2771 states have call successors, (3111) [2022-11-20 12:20:09,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15387 states to 15387 states and 26044 transitions. [2022-11-20 12:20:09,528 INFO L78 Accepts]: Start accepts. Automaton has 15387 states and 26044 transitions. Word has length 165 [2022-11-20 12:20:09,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:20:09,529 INFO L495 AbstractCegarLoop]: Abstraction has 15387 states and 26044 transitions. [2022-11-20 12:20:09,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:20:09,530 INFO L276 IsEmpty]: Start isEmpty. Operand 15387 states and 26044 transitions. [2022-11-20 12:20:09,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-20 12:20:09,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:20:09,622 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-20 12:20:09,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:20:09,623 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:20:09,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:09,624 INFO L85 PathProgramCache]: Analyzing trace with hash -404028959, now seen corresponding path program 1 times [2022-11-20 12:20:09,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:09,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814454652] [2022-11-20 12:20:09,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:09,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:20:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:09,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:20:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:09,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:20:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:09,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:20:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:20:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:09,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:20:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:09,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 12:20:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:09,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 12:20:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:09,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-20 12:20:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:10,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 12:20:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:10,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 12:20:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:10,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-20 12:20:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:10,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-20 12:20:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:10,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 12:20:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:10,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:20:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:10,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 12:20:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:10,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 12:20:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:10,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 12:20:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-20 12:20:10,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:10,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814454652] [2022-11-20 12:20:10,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814454652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:10,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:10,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:20:10,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924994932] [2022-11-20 12:20:10,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:10,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:20:10,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:10,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:20:10,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:20:10,112 INFO L87 Difference]: Start difference. First operand 15387 states and 26044 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:20:14,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:20:14,243 INFO L93 Difference]: Finished difference Result 40737 states and 70437 transitions. [2022-11-20 12:20:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:20:14,244 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 166 [2022-11-20 12:20:14,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:20:14,435 INFO L225 Difference]: With dead ends: 40737 [2022-11-20 12:20:14,435 INFO L226 Difference]: Without dead ends: 27438 [2022-11-20 12:20:14,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:20:14,498 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 893 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:20:14,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 663 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 12:20:14,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27438 states. [2022-11-20 12:20:17,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27438 to 27357. [2022-11-20 12:20:17,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27357 states, 22518 states have (on average 1.5973443467448263) internal successors, (35969), 22525 states have internal predecessors, (35969), 4811 states have call successors, (4811), 23 states have call predecessors, (4811), 27 states have return successors, (5424), 4810 states have call predecessors, (5424), 4810 states have call successors, (5424) [2022-11-20 12:20:18,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27357 states to 27357 states and 46204 transitions. [2022-11-20 12:20:18,017 INFO L78 Accepts]: Start accepts. Automaton has 27357 states and 46204 transitions. Word has length 166 [2022-11-20 12:20:18,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:20:18,018 INFO L495 AbstractCegarLoop]: Abstraction has 27357 states and 46204 transitions. [2022-11-20 12:20:18,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:20:18,018 INFO L276 IsEmpty]: Start isEmpty. Operand 27357 states and 46204 transitions. [2022-11-20 12:20:18,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 12:20:18,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:20:18,112 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-20 12:20:18,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:20:18,113 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:20:18,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:18,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1407538167, now seen corresponding path program 1 times [2022-11-20 12:20:18,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:18,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065933114] [2022-11-20 12:20:18,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:18,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:20:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:20:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:20:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:20:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:20:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:20:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 12:20:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 12:20:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-20 12:20:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 12:20:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 12:20:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 12:20:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 12:20:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 12:20:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:20:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-20 12:20:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 12:20:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-20 12:20:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-20 12:20:18,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:18,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065933114] [2022-11-20 12:20:18,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065933114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:18,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:18,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:20:18,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743735004] [2022-11-20 12:20:18,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:18,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:20:18,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:18,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:20:18,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:20:18,315 INFO L87 Difference]: Start difference. First operand 27357 states and 46204 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:20:24,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:20:24,978 INFO L93 Difference]: Finished difference Result 74524 states and 128036 transitions. [2022-11-20 12:20:24,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:20:24,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2022-11-20 12:20:24,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:20:25,436 INFO L225 Difference]: With dead ends: 74524 [2022-11-20 12:20:25,437 INFO L226 Difference]: Without dead ends: 49987 [2022-11-20 12:20:25,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:20:25,512 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 917 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:20:25,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 668 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 12:20:25,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49987 states. [2022-11-20 12:20:31,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49987 to 49906. [2022-11-20 12:20:31,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49906 states, 41352 states have (on average 1.5914586960727413) internal successors, (65810), 41359 states have internal predecessors, (65810), 8526 states have call successors, (8526), 23 states have call predecessors, (8526), 27 states have return successors, (9671), 8525 states have call predecessors, (9671), 8525 states have call successors, (9671) [2022-11-20 12:20:31,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49906 states to 49906 states and 84007 transitions. [2022-11-20 12:20:31,820 INFO L78 Accepts]: Start accepts. Automaton has 49906 states and 84007 transitions. Word has length 167 [2022-11-20 12:20:31,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:20:31,822 INFO L495 AbstractCegarLoop]: Abstraction has 49906 states and 84007 transitions. [2022-11-20 12:20:31,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:20:31,822 INFO L276 IsEmpty]: Start isEmpty. Operand 49906 states and 84007 transitions. [2022-11-20 12:20:31,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-20 12:20:31,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:20:31,961 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-20 12:20:31,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 12:20:31,962 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:20:31,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:20:31,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2075398847, now seen corresponding path program 1 times [2022-11-20 12:20:31,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:20:31,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817494606] [2022-11-20 12:20:31,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:20:31,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:20:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:20:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:20:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:20:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:20:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:20:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:20:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 12:20:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 12:20:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 12:20:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 12:20:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 12:20:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 12:20:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-20 12:20:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 12:20:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:20:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-20 12:20:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 12:20:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-20 12:20:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:20:32,132 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-20 12:20:32,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:20:32,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817494606] [2022-11-20 12:20:32,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817494606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:20:32,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:20:32,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:20:32,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268372789] [2022-11-20 12:20:32,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:20:32,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:20:32,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:20:32,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:20:32,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:20:32,135 INFO L87 Difference]: Start difference. First operand 49906 states and 84007 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:20:42,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:20:42,187 INFO L93 Difference]: Finished difference Result 93010 states and 160167 transitions. [2022-11-20 12:20:42,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:20:42,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 168 [2022-11-20 12:20:42,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:20:42,680 INFO L225 Difference]: With dead ends: 93010 [2022-11-20 12:20:42,681 INFO L226 Difference]: Without dead ends: 92831 [2022-11-20 12:20:42,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:20:42,729 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 925 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:20:42,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 663 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 12:20:42,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92831 states.