./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa --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 6dc52251d8599495e3d1910510992bf3863620ce75312360a12a1bf3bdfb6242 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:49:52,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:49:52,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:49:52,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:49:52,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:49:52,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:49:52,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:49:52,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:49:52,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:49:52,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:49:52,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:49:52,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:49:52,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:49:52,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:49:52,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:49:52,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:49:52,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:49:52,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:49:52,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:49:52,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:49:52,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:49:52,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:49:52,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:49:52,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:49:52,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:49:52,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:49:52,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:49:52,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:49:52,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:49:52,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:49:52,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:49:52,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:49:52,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:49:52,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:49:52,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:49:52,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:49:52,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:49:52,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:49:52,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:49:52,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:49:52,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:49:52,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:49:52,557 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:49:52,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:49:52,557 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:49:52,558 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:49:52,558 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:49:52,558 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:49:52,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:49:52,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:49:52,559 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:49:52,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:49:52,559 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:49:52,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:49:52,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:49:52,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:49:52,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:49:52,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:49:52,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:49:52,561 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:49:52,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:49:52,561 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:49:52,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:49:52,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:49:52,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:49:52,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:49:52,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:49:52,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:49:52,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:49:52,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:49:52,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:49:52,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:49:52,566 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:49:52,567 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:49:52,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:49:52,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:49:52,567 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_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dc52251d8599495e3d1910510992bf3863620ce75312360a12a1bf3bdfb6242 [2021-12-06 17:49:52,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:49:52,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:49:52,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:49:52,758 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:49:52,759 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:49:52,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec9_product33.cil.c [2021-12-06 17:49:52,803 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/data/5b7dedfc2/45cdf88c366b47bc88e1099225457c6e/FLAG4c4487554 [2021-12-06 17:49:53,270 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:49:53,271 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/sv-benchmarks/c/product-lines/email_spec9_product33.cil.c [2021-12-06 17:49:53,285 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/data/5b7dedfc2/45cdf88c366b47bc88e1099225457c6e/FLAG4c4487554 [2021-12-06 17:49:53,785 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/data/5b7dedfc2/45cdf88c366b47bc88e1099225457c6e [2021-12-06 17:49:53,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:49:53,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:49:53,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:49:53,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:49:53,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:49:53,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:49:53" (1/1) ... [2021-12-06 17:49:53,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9fb1eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:53, skipping insertion in model container [2021-12-06 17:49:53,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:49:53" (1/1) ... [2021-12-06 17:49:53,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:49:53,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:49:54,095 WARN L230 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_6d31e903-10d7-41cd-b701-4aade7d24304/sv-benchmarks/c/product-lines/email_spec9_product33.cil.c[33566,33579] [2021-12-06 17:49:54,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:49:54,181 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:49:54,249 WARN L230 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_6d31e903-10d7-41cd-b701-4aade7d24304/sv-benchmarks/c/product-lines/email_spec9_product33.cil.c[33566,33579] [2021-12-06 17:49:54,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:49:54,317 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:49:54,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54 WrapperNode [2021-12-06 17:49:54,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:49:54,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:49:54,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:49:54,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:49:54,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2021-12-06 17:49:54,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2021-12-06 17:49:54,396 INFO L137 Inliner]: procedures = 135, calls = 233, calls flagged for inlining = 66, calls inlined = 61, statements flattened = 1084 [2021-12-06 17:49:54,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:49:54,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:49:54,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:49:54,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:49:54,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2021-12-06 17:49:54,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2021-12-06 17:49:54,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2021-12-06 17:49:54,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2021-12-06 17:49:54,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2021-12-06 17:49:54,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2021-12-06 17:49:54,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2021-12-06 17:49:54,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:49:54,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:49:54,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:49:54,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:49:54,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (1/1) ... [2021-12-06 17:49:54,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:49:54,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:49:54,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:49:54,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:49:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-06 17:49:54,517 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-06 17:49:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-06 17:49:54,517 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-06 17:49:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-06 17:49:54,517 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-06 17:49:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-06 17:49:54,518 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-06 17:49:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-06 17:49:54,518 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-06 17:49:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-06 17:49:54,518 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-06 17:49:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-06 17:49:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-06 17:49:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-06 17:49:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-06 17:49:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-06 17:49:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-06 17:49:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-06 17:49:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-06 17:49:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-06 17:49:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-06 17:49:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-06 17:49:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-06 17:49:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-06 17:49:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-06 17:49:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-06 17:49:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:49:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-06 17:49:54,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-06 17:49:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-06 17:49:54,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-06 17:49:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-06 17:49:54,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-06 17:49:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-06 17:49:54,522 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-06 17:49:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-06 17:49:54,522 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-06 17:49:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-06 17:49:54,522 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-06 17:49:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-06 17:49:54,523 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-06 17:49:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-06 17:49:54,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-06 17:49:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-06 17:49:54,523 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-06 17:49:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-06 17:49:54,523 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-06 17:49:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:49:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-06 17:49:54,524 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-06 17:49:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:49:54,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:49:54,699 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:49:54,701 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:49:55,172 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:49:55,181 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:49:55,181 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 17:49:55,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:49:55 BoogieIcfgContainer [2021-12-06 17:49:55,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:49:55,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:49:55,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:49:55,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:49:55,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:49:53" (1/3) ... [2021-12-06 17:49:55,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3d1cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:49:55, skipping insertion in model container [2021-12-06 17:49:55,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:54" (2/3) ... [2021-12-06 17:49:55,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3d1cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:49:55, skipping insertion in model container [2021-12-06 17:49:55,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:49:55" (3/3) ... [2021-12-06 17:49:55,189 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_product33.cil.c [2021-12-06 17:49:55,193 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:49:55,193 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:49:55,229 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:49:55,234 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:49:55,234 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:49:55,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 389 states, 300 states have (on average 1.5) internal successors, (450), 304 states have internal predecessors, (450), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2021-12-06 17:49:55,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 17:49:55,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:55,267 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-06 17:49:55,267 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:55,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:55,271 INFO L85 PathProgramCache]: Analyzing trace with hash 827259601, now seen corresponding path program 1 times [2021-12-06 17:49:55,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:55,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961224860] [2021-12-06 17:49:55,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:55,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:55,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:49:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:55,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:49:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:55,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:49:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:55,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 17:49:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:55,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 17:49:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:55,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:49:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:55,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:49:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:55,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:49:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:55,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 17:49:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:55,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:49:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:55,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 17:49:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:55,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 17:49:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:55,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 17:49:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:55,660 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 17:49:55,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:55,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961224860] [2021-12-06 17:49:55,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961224860] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:49:55,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188264567] [2021-12-06 17:49:55,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:55,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:49:55,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:49:55,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:49:55,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:49:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:55,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 17:49:55,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:49:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 17:49:55,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:49:55,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188264567] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:55,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:49:55,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-06 17:49:55,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587487706] [2021-12-06 17:49:55,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:55,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:49:55,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:55,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:49:55,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:49:56,001 INFO L87 Difference]: Start difference. First operand has 389 states, 300 states have (on average 1.5) internal successors, (450), 304 states have internal predecessors, (450), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:49:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:56,064 INFO L93 Difference]: Finished difference Result 619 states and 898 transitions. [2021-12-06 17:49:56,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:49:56,066 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2021-12-06 17:49:56,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:56,082 INFO L225 Difference]: With dead ends: 619 [2021-12-06 17:49:56,082 INFO L226 Difference]: Without dead ends: 382 [2021-12-06 17:49:56,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:49:56,090 INFO L933 BasicCegarLoop]: 572 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, 572 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 [2021-12-06 17:49:56,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:49:56,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-12-06 17:49:56,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2021-12-06 17:49:56,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 294 states have (on average 1.4931972789115646) internal successors, (439), 297 states have internal predecessors, (439), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-12-06 17:49:56,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 564 transitions. [2021-12-06 17:49:56,154 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 564 transitions. Word has length 101 [2021-12-06 17:49:56,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:56,156 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 564 transitions. [2021-12-06 17:49:56,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:49:56,157 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 564 transitions. [2021-12-06 17:49:56,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-06 17:49:56,164 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:56,164 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-06 17:49:56,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:49:56,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-06 17:49:56,367 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:56,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:56,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1955888924, now seen corresponding path program 1 times [2021-12-06 17:49:56,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:56,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187042073] [2021-12-06 17:49:56,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:56,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:56,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:49:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:49:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:56,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:49:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:56,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 17:49:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:56,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 17:49:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:56,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:49:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:56,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:49:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:56,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 17:49:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:56,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:49:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:56,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 17:49:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:56,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 17:49:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:56,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 17:49:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:56,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 17:49:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:56,681 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 17:49:56,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:56,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187042073] [2021-12-06 17:49:56,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187042073] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:49:56,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130068456] [2021-12-06 17:49:56,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:56,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:49:56,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:49:56,684 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:49:56,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 17:49:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:56,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 17:49:56,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:49:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 17:49:56,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:49:56,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130068456] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:56,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:49:56,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 17:49:56,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577042389] [2021-12-06 17:49:56,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:56,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:49:56,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:56,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:49:56,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:49:56,943 INFO L87 Difference]: Start difference. First operand 382 states and 564 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:49:56,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:56,969 INFO L93 Difference]: Finished difference Result 609 states and 879 transitions. [2021-12-06 17:49:56,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:49:56,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2021-12-06 17:49:56,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:56,973 INFO L225 Difference]: With dead ends: 609 [2021-12-06 17:49:56,973 INFO L226 Difference]: Without dead ends: 385 [2021-12-06 17:49:56,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:49:56,976 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1122 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 [2021-12-06 17:49:56,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1122 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:49:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-12-06 17:49:56,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 384. [2021-12-06 17:49:56,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 296 states have (on average 1.489864864864865) internal successors, (441), 299 states have internal predecessors, (441), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-12-06 17:49:57,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 566 transitions. [2021-12-06 17:49:57,001 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 566 transitions. Word has length 102 [2021-12-06 17:49:57,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:57,001 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 566 transitions. [2021-12-06 17:49:57,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:49:57,001 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 566 transitions. [2021-12-06 17:49:57,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 17:49:57,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:57,004 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:49:57,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 17:49:57,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:49:57,206 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:57,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:57,207 INFO L85 PathProgramCache]: Analyzing trace with hash -745029444, now seen corresponding path program 1 times [2021-12-06 17:49:57,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:57,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400300048] [2021-12-06 17:49:57,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:57,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:57,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:49:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:57,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:49:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:57,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:49:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:57,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 17:49:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:57,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 17:49:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:57,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:49:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:57,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:49:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:57,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:49:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:57,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 17:49:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:57,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:49:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:57,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 17:49:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:57,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 17:49:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:57,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 17:49:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:57,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 17:49:57,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:57,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400300048] [2021-12-06 17:49:57,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400300048] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:49:57,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500186121] [2021-12-06 17:49:57,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:57,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:49:57,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:49:57,435 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:49:57,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 17:49:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:57,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:49:57,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:49:57,680 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 17:49:57,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:49:57,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500186121] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:57,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:49:57,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 17:49:57,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209463357] [2021-12-06 17:49:57,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:57,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:49:57,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:57,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:49:57,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:49:57,682 INFO L87 Difference]: Start difference. First operand 384 states and 566 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:49:57,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:57,715 INFO L93 Difference]: Finished difference Result 803 states and 1199 transitions. [2021-12-06 17:49:57,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:49:57,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2021-12-06 17:49:57,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:57,720 INFO L225 Difference]: With dead ends: 803 [2021-12-06 17:49:57,720 INFO L226 Difference]: Without dead ends: 446 [2021-12-06 17:49:57,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:49:57,723 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 115 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1096 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 [2021-12-06 17:49:57,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1096 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:49:57,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-12-06 17:49:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 438. [2021-12-06 17:49:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 339 states have (on average 1.5073746312684366) internal successors, (511), 342 states have internal predecessors, (511), 74 states have call successors, (74), 24 states have call predecessors, (74), 24 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-12-06 17:49:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 658 transitions. [2021-12-06 17:49:57,753 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 658 transitions. Word has length 111 [2021-12-06 17:49:57,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:57,753 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 658 transitions. [2021-12-06 17:49:57,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:49:57,754 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 658 transitions. [2021-12-06 17:49:57,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:49:57,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:57,757 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:49:57,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 17:49:57,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:49:57,957 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:57,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:57,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1339832561, now seen corresponding path program 1 times [2021-12-06 17:49:57,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:57,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175738954] [2021-12-06 17:49:57,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:57,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:49:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:49:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:49:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 17:49:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 17:49:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:49:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:49:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:49:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:49:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 17:49:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 17:49:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 17:49:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:49:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,082 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 17:49:58,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:58,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175738954] [2021-12-06 17:49:58,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175738954] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:49:58,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546211884] [2021-12-06 17:49:58,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:58,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:49:58,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:49:58,084 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:49:58,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 17:49:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:49:58,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:49:58,405 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 17:49:58,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:49:58,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546211884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:58,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:49:58,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 17:49:58,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884152712] [2021-12-06 17:49:58,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:58,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:49:58,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:58,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:49:58,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:49:58,407 INFO L87 Difference]: Start difference. First operand 438 states and 658 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 17:49:58,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:58,469 INFO L93 Difference]: Finished difference Result 867 states and 1306 transitions. [2021-12-06 17:49:58,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:49:58,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2021-12-06 17:49:58,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:58,474 INFO L225 Difference]: With dead ends: 867 [2021-12-06 17:49:58,474 INFO L226 Difference]: Without dead ends: 440 [2021-12-06 17:49:58,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:49:58,477 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 133 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:58,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 2068 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:49:58,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-12-06 17:49:58,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2021-12-06 17:49:58,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 340 states have (on average 1.5058823529411764) internal successors, (512), 344 states have internal predecessors, (512), 74 states have call successors, (74), 24 states have call predecessors, (74), 25 states have return successors, (75), 73 states have call predecessors, (75), 73 states have call successors, (75) [2021-12-06 17:49:58,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 661 transitions. [2021-12-06 17:49:58,503 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 661 transitions. Word has length 112 [2021-12-06 17:49:58,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:58,504 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 661 transitions. [2021-12-06 17:49:58,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 17:49:58,504 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 661 transitions. [2021-12-06 17:49:58,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-06 17:49:58,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:58,507 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-12-06 17:49:58,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 17:49:58,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:49:58,708 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:58,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:58,708 INFO L85 PathProgramCache]: Analyzing trace with hash -345346834, now seen corresponding path program 1 times [2021-12-06 17:49:58,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:58,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257610602] [2021-12-06 17:49:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:58,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:49:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:49:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:49:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:49:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:49:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:49:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 17:49:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:49:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:49:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 17:49:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 17:49:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:49:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:49:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:58,857 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:49:58,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:58,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257610602] [2021-12-06 17:49:58,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257610602] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:49:58,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955020019] [2021-12-06 17:49:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:58,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:49:58,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:49:58,859 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:49:58,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 17:49:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:59,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:49:59,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:49:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 17:49:59,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:49:59,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955020019] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:59,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:49:59,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-06 17:49:59,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658238327] [2021-12-06 17:49:59,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:59,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:49:59,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:59,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:49:59,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:49:59,153 INFO L87 Difference]: Start difference. First operand 440 states and 661 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 17:49:59,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:59,211 INFO L93 Difference]: Finished difference Result 869 states and 1311 transitions. [2021-12-06 17:49:59,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:49:59,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2021-12-06 17:49:59,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:59,216 INFO L225 Difference]: With dead ends: 869 [2021-12-06 17:49:59,216 INFO L226 Difference]: Without dead ends: 442 [2021-12-06 17:49:59,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:49:59,219 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 132 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:59,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 2057 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:49:59,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-12-06 17:49:59,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-12-06 17:49:59,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 341 states have (on average 1.5043988269794721) internal successors, (513), 346 states have internal predecessors, (513), 74 states have call successors, (74), 24 states have call predecessors, (74), 26 states have return successors, (80), 73 states have call predecessors, (80), 73 states have call successors, (80) [2021-12-06 17:49:59,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 667 transitions. [2021-12-06 17:49:59,243 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 667 transitions. Word has length 113 [2021-12-06 17:49:59,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:59,243 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 667 transitions. [2021-12-06 17:49:59,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 17:49:59,243 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 667 transitions. [2021-12-06 17:49:59,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-06 17:49:59,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:59,246 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 17:49:59,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 17:49:59,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:49:59,447 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:59,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:59,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1612890018, now seen corresponding path program 1 times [2021-12-06 17:49:59,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:59,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043799451] [2021-12-06 17:49:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:59,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:59,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:49:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:59,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:49:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:59,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:49:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:59,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:49:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:59,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:49:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:59,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:49:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:59,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 17:49:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:59,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 17:49:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:59,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 17:49:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:59,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 17:49:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:59,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 17:49:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:59,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 17:49:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:59,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 17:49:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:59,678 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 17:49:59,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:59,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043799451] [2021-12-06 17:49:59,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043799451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:59,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:59,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 17:49:59,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341106598] [2021-12-06 17:49:59,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:59,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:49:59,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:59,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:49:59,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:49:59,680 INFO L87 Difference]: Start difference. First operand 442 states and 667 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 17:50:01,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:01,189 INFO L93 Difference]: Finished difference Result 1076 states and 1633 transitions. [2021-12-06 17:50:01,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:50:01,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2021-12-06 17:50:01,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:01,196 INFO L225 Difference]: With dead ends: 1076 [2021-12-06 17:50:01,196 INFO L226 Difference]: Without dead ends: 657 [2021-12-06 17:50:01,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:50:01,199 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 1475 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:01,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1492 Valid, 1870 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [601 Valid, 2207 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 17:50:01,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-12-06 17:50:01,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 442. [2021-12-06 17:50:01,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 341 states have (on average 1.5043988269794721) internal successors, (513), 346 states have internal predecessors, (513), 74 states have call successors, (74), 24 states have call predecessors, (74), 26 states have return successors, (79), 73 states have call predecessors, (79), 73 states have call successors, (79) [2021-12-06 17:50:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 666 transitions. [2021-12-06 17:50:01,242 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 666 transitions. Word has length 114 [2021-12-06 17:50:01,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:50:01,242 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 666 transitions. [2021-12-06 17:50:01,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 17:50:01,243 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 666 transitions. [2021-12-06 17:50:01,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-06 17:50:01,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:50:01,245 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:50:01,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 17:50:01,246 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:50:01,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:50:01,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1193438081, now seen corresponding path program 2 times [2021-12-06 17:50:01,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:50:01,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741070895] [2021-12-06 17:50:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:01,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:50:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:01,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:50:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:01,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:50:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:01,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:50:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:01,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:50:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:01,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:01,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:50:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:01,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 17:50:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:01,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 17:50:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:01,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 17:50:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:01,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:50:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:01,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 17:50:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:01,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 17:50:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:01,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 17:50:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:01,351 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 17:50:01,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:50:01,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741070895] [2021-12-06 17:50:01,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741070895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:50:01,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:50:01,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 17:50:01,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866959963] [2021-12-06 17:50:01,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:50:01,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:50:01,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:50:01,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:50:01,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:50:01,353 INFO L87 Difference]: Start difference. First operand 442 states and 666 transitions. Second operand has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 17:50:02,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:02,679 INFO L93 Difference]: Finished difference Result 1078 states and 1636 transitions. [2021-12-06 17:50:02,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:50:02,680 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2021-12-06 17:50:02,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:02,684 INFO L225 Difference]: With dead ends: 1078 [2021-12-06 17:50:02,684 INFO L226 Difference]: Without dead ends: 659 [2021-12-06 17:50:02,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:50:02,686 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 1457 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 615 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 2796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 615 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:02,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1474 Valid, 1854 Invalid, 2796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [615 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 17:50:02,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-12-06 17:50:02,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 444. [2021-12-06 17:50:02,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 342 states have (on average 1.5029239766081872) internal successors, (514), 348 states have internal predecessors, (514), 74 states have call successors, (74), 24 states have call predecessors, (74), 27 states have return successors, (81), 73 states have call predecessors, (81), 73 states have call successors, (81) [2021-12-06 17:50:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 669 transitions. [2021-12-06 17:50:02,714 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 669 transitions. Word has length 115 [2021-12-06 17:50:02,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:50:02,714 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 669 transitions. [2021-12-06 17:50:02,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 17:50:02,714 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 669 transitions. [2021-12-06 17:50:02,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-06 17:50:02,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:50:02,716 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 17:50:02,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 17:50:02,716 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:50:02,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:50:02,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1780926243, now seen corresponding path program 1 times [2021-12-06 17:50:02,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:50:02,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190687365] [2021-12-06 17:50:02,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:02,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:50:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:02,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:50:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:02,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:50:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:02,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:50:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:02,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:50:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:02,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:02,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:50:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:02,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:50:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:02,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:50:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:02,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 17:50:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:02,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 17:50:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:02,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 17:50:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:02,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 17:50:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:02,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 17:50:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:50:02,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:50:02,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190687365] [2021-12-06 17:50:02,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190687365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:50:02,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:50:02,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 17:50:02,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89636278] [2021-12-06 17:50:02,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:50:02,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:50:02,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:50:02,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:50:02,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:50:02,831 INFO L87 Difference]: Start difference. First operand 444 states and 669 transitions. Second operand has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 17:50:04,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:04,401 INFO L93 Difference]: Finished difference Result 1076 states and 1631 transitions. [2021-12-06 17:50:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:50:04,401 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2021-12-06 17:50:04,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:04,406 INFO L225 Difference]: With dead ends: 1076 [2021-12-06 17:50:04,407 INFO L226 Difference]: Without dead ends: 659 [2021-12-06 17:50:04,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-06 17:50:04,409 INFO L933 BasicCegarLoop]: 685 mSDtfsCounter, 1530 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 3992 mSolverCounterSat, 661 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 4653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 661 IncrementalHoareTripleChecker+Valid, 3992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:04,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1530 Valid, 2459 Invalid, 4653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [661 Valid, 3992 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 17:50:04,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-12-06 17:50:04,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 444. [2021-12-06 17:50:04,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 342 states have (on average 1.5029239766081872) internal successors, (514), 348 states have internal predecessors, (514), 74 states have call successors, (74), 24 states have call predecessors, (74), 27 states have return successors, (80), 73 states have call predecessors, (80), 73 states have call successors, (80) [2021-12-06 17:50:04,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 668 transitions. [2021-12-06 17:50:04,437 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 668 transitions. Word has length 116 [2021-12-06 17:50:04,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:50:04,437 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 668 transitions. [2021-12-06 17:50:04,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 17:50:04,437 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 668 transitions. [2021-12-06 17:50:04,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-06 17:50:04,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:50:04,439 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:50:04,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 17:50:04,439 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:50:04,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:50:04,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1953819643, now seen corresponding path program 2 times [2021-12-06 17:50:04,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:50:04,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562978476] [2021-12-06 17:50:04,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:04,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:50:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:04,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:50:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:04,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:50:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:04,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:50:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:04,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:50:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:04,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:50:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:04,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:50:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:04,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 17:50:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:04,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 17:50:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:04,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 17:50:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:04,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 17:50:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:04,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 17:50:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:04,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 17:50:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:04,551 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:50:04,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:50:04,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562978476] [2021-12-06 17:50:04,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562978476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:50:04,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:50:04,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 17:50:04,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006696970] [2021-12-06 17:50:04,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:50:04,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:50:04,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:50:04,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:50:04,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:50:04,553 INFO L87 Difference]: Start difference. First operand 444 states and 668 transitions. Second operand has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 17:50:06,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:06,060 INFO L93 Difference]: Finished difference Result 1078 states and 1637 transitions. [2021-12-06 17:50:06,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:50:06,060 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2021-12-06 17:50:06,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:06,064 INFO L225 Difference]: With dead ends: 1078 [2021-12-06 17:50:06,064 INFO L226 Difference]: Without dead ends: 661 [2021-12-06 17:50:06,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-06 17:50:06,066 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 1623 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 3828 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 4501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 3828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:06,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1623 Valid, 2389 Invalid, 4501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 3828 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 17:50:06,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-12-06 17:50:06,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 446. [2021-12-06 17:50:06,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 343 states have (on average 1.501457725947522) internal successors, (515), 350 states have internal predecessors, (515), 74 states have call successors, (74), 24 states have call predecessors, (74), 28 states have return successors, (85), 73 states have call predecessors, (85), 73 states have call successors, (85) [2021-12-06 17:50:06,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 674 transitions. [2021-12-06 17:50:06,090 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 674 transitions. Word has length 117 [2021-12-06 17:50:06,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:50:06,090 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 674 transitions. [2021-12-06 17:50:06,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 17:50:06,091 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 674 transitions. [2021-12-06 17:50:06,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 17:50:06,092 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:50:06,092 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 17:50:06,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 17:50:06,093 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:50:06,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:50:06,093 INFO L85 PathProgramCache]: Analyzing trace with hash -310085064, now seen corresponding path program 1 times [2021-12-06 17:50:06,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:50:06,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847848083] [2021-12-06 17:50:06,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:06,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:50:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:06,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:50:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:06,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:50:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:06,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:50:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:06,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:50:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:06,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:06,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:50:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:06,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:50:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:06,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:50:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:06,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:50:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:06,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 17:50:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:06,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 17:50:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:06,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 17:50:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:06,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 17:50:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 17:50:06,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:50:06,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847848083] [2021-12-06 17:50:06,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847848083] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:50:06,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202130219] [2021-12-06 17:50:06,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:06,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:50:06,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:50:06,200 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:50:06,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 17:50:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:06,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:50:06,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:50:06,443 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:50:06,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:50:06,545 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:50:06,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202130219] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:50:06,545 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:50:06,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-06 17:50:06,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543793657] [2021-12-06 17:50:06,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:50:06,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 17:50:06,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:50:06,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 17:50:06,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:50:06,547 INFO L87 Difference]: Start difference. First operand 446 states and 674 transitions. Second operand has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2021-12-06 17:50:08,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:08,758 INFO L93 Difference]: Finished difference Result 1807 states and 2945 transitions. [2021-12-06 17:50:08,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 17:50:08,758 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 118 [2021-12-06 17:50:08,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:08,767 INFO L225 Difference]: With dead ends: 1807 [2021-12-06 17:50:08,767 INFO L226 Difference]: Without dead ends: 1392 [2021-12-06 17:50:08,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-06 17:50:08,770 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 3823 mSDsluCounter, 3207 mSDsCounter, 0 mSdLazyCounter, 5126 mSolverCounterSat, 1554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3825 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 6680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1554 IncrementalHoareTripleChecker+Valid, 5126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:08,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3825 Valid, 4000 Invalid, 6680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1554 Valid, 5126 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 17:50:08,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-12-06 17:50:08,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 799. [2021-12-06 17:50:08,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 632 states have (on average 1.5601265822784811) internal successors, (986), 639 states have internal predecessors, (986), 138 states have call successors, (138), 24 states have call predecessors, (138), 28 states have return successors, (159), 137 states have call predecessors, (159), 137 states have call successors, (159) [2021-12-06 17:50:08,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1283 transitions. [2021-12-06 17:50:08,818 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1283 transitions. Word has length 118 [2021-12-06 17:50:08,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:50:08,819 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1283 transitions. [2021-12-06 17:50:08,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2021-12-06 17:50:08,819 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1283 transitions. [2021-12-06 17:50:08,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-06 17:50:08,822 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:50:08,822 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 17:50:08,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 17:50:09,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 17:50:09,023 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:50:09,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:50:09,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1558417906, now seen corresponding path program 1 times [2021-12-06 17:50:09,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:50:09,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934211595] [2021-12-06 17:50:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:09,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:50:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:09,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:50:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:09,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:50:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:09,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:50:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:09,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:50:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:09,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:09,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:50:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:09,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:50:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:09,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:50:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:09,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 17:50:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:09,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 17:50:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:09,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:50:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:09,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 17:50:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:09,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 17:50:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:09,114 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:50:09,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:50:09,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934211595] [2021-12-06 17:50:09,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934211595] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:50:09,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:50:09,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:50:09,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936305808] [2021-12-06 17:50:09,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:50:09,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:50:09,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:50:09,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:50:09,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:50:09,116 INFO L87 Difference]: Start difference. First operand 799 states and 1283 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:10,095 INFO L93 Difference]: Finished difference Result 2068 states and 3388 transitions. [2021-12-06 17:50:10,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:50:10,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2021-12-06 17:50:10,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:10,105 INFO L225 Difference]: With dead ends: 2068 [2021-12-06 17:50:10,105 INFO L226 Difference]: Without dead ends: 1347 [2021-12-06 17:50:10,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:50:10,108 INFO L933 BasicCegarLoop]: 707 mSDtfsCounter, 1446 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 1811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:10,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1461 Valid, 1522 Invalid, 1811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 17:50:10,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2021-12-06 17:50:10,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1124. [2021-12-06 17:50:10,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 893 states have (on average 1.58006718924972) internal successors, (1411), 900 states have internal predecessors, (1411), 202 states have call successors, (202), 24 states have call predecessors, (202), 28 states have return successors, (233), 201 states have call predecessors, (233), 201 states have call successors, (233) [2021-12-06 17:50:10,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1846 transitions. [2021-12-06 17:50:10,194 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1846 transitions. Word has length 121 [2021-12-06 17:50:10,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:50:10,195 INFO L470 AbstractCegarLoop]: Abstraction has 1124 states and 1846 transitions. [2021-12-06 17:50:10,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:10,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1846 transitions. [2021-12-06 17:50:10,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-06 17:50:10,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:50:10,199 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 17:50:10,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 17:50:10,199 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:50:10,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:50:10,200 INFO L85 PathProgramCache]: Analyzing trace with hash -783601292, now seen corresponding path program 1 times [2021-12-06 17:50:10,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:50:10,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710337399] [2021-12-06 17:50:10,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:10,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:50:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:10,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:50:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:10,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:50:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:10,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:50:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:10,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:50:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:10,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:10,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:50:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:10,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 17:50:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:10,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:50:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:10,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 17:50:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:10,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 17:50:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:10,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 17:50:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:10,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 17:50:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:10,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 17:50:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:10,270 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:50:10,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:50:10,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710337399] [2021-12-06 17:50:10,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710337399] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:50:10,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:50:10,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:50:10,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296962550] [2021-12-06 17:50:10,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:50:10,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:50:10,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:50:10,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:50:10,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:50:10,272 INFO L87 Difference]: Start difference. First operand 1124 states and 1846 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:11,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:11,263 INFO L93 Difference]: Finished difference Result 2873 states and 4772 transitions. [2021-12-06 17:50:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:50:11,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2021-12-06 17:50:11,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:11,273 INFO L225 Difference]: With dead ends: 2873 [2021-12-06 17:50:11,273 INFO L226 Difference]: Without dead ends: 1880 [2021-12-06 17:50:11,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:50:11,276 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 1419 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:11,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1434 Valid, 1510 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 17:50:11,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-12-06 17:50:11,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1657. [2021-12-06 17:50:11,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1331 states have (on average 1.59053343350864) internal successors, (2117), 1338 states have internal predecessors, (2117), 297 states have call successors, (297), 24 states have call predecessors, (297), 28 states have return successors, (328), 296 states have call predecessors, (328), 296 states have call successors, (328) [2021-12-06 17:50:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2742 transitions. [2021-12-06 17:50:11,376 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2742 transitions. Word has length 122 [2021-12-06 17:50:11,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:50:11,376 INFO L470 AbstractCegarLoop]: Abstraction has 1657 states and 2742 transitions. [2021-12-06 17:50:11,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:11,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2742 transitions. [2021-12-06 17:50:11,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 17:50:11,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:50:11,381 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 17:50:11,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 17:50:11,382 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:50:11,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:50:11,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1220034332, now seen corresponding path program 1 times [2021-12-06 17:50:11,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:50:11,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527551384] [2021-12-06 17:50:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:11,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:50:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:11,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:50:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:11,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:50:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:11,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:50:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:11,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:50:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:11,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:11,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:50:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:11,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:50:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:11,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 17:50:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:11,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:50:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:11,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 17:50:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:11,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 17:50:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:11,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 17:50:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:11,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 17:50:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:11,455 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:50:11,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:50:11,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527551384] [2021-12-06 17:50:11,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527551384] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:50:11,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:50:11,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:50:11,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348591281] [2021-12-06 17:50:11,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:50:11,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:50:11,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:50:11,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:50:11,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:50:11,457 INFO L87 Difference]: Start difference. First operand 1657 states and 2742 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:12,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:12,483 INFO L93 Difference]: Finished difference Result 4080 states and 6858 transitions. [2021-12-06 17:50:12,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:50:12,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2021-12-06 17:50:12,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:12,497 INFO L225 Difference]: With dead ends: 4080 [2021-12-06 17:50:12,497 INFO L226 Difference]: Without dead ends: 2689 [2021-12-06 17:50:12,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:50:12,501 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1428 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 1816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:12,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1443 Valid, 1504 Invalid, 1816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 17:50:12,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2021-12-06 17:50:12,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2466. [2021-12-06 17:50:12,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2017 states have (on average 1.5984134853743184) internal successors, (3224), 2024 states have internal predecessors, (3224), 420 states have call successors, (420), 24 states have call predecessors, (420), 28 states have return successors, (467), 419 states have call predecessors, (467), 419 states have call successors, (467) [2021-12-06 17:50:12,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4111 transitions. [2021-12-06 17:50:12,646 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4111 transitions. Word has length 123 [2021-12-06 17:50:12,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:50:12,646 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4111 transitions. [2021-12-06 17:50:12,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:12,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4111 transitions. [2021-12-06 17:50:12,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 17:50:12,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:50:12,653 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 17:50:12,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 17:50:12,654 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:50:12,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:50:12,654 INFO L85 PathProgramCache]: Analyzing trace with hash 776702101, now seen corresponding path program 1 times [2021-12-06 17:50:12,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:50:12,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097329326] [2021-12-06 17:50:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:12,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:50:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:12,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:50:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:12,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:50:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:12,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:50:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:12,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:50:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:12,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:12,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:50:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:12,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 17:50:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:12,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 17:50:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:12,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 17:50:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:12,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 17:50:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:12,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:50:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:12,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 17:50:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:12,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 17:50:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:12,745 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:50:12,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:50:12,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097329326] [2021-12-06 17:50:12,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097329326] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:50:12,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:50:12,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:50:12,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120899721] [2021-12-06 17:50:12,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:50:12,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:50:12,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:50:12,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:50:12,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:50:12,747 INFO L87 Difference]: Start difference. First operand 2466 states and 4111 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:13,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:13,803 INFO L93 Difference]: Finished difference Result 5964 states and 10118 transitions. [2021-12-06 17:50:13,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:50:13,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2021-12-06 17:50:13,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:13,831 INFO L225 Difference]: With dead ends: 5964 [2021-12-06 17:50:13,831 INFO L226 Difference]: Without dead ends: 3983 [2021-12-06 17:50:13,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:50:13,838 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 1408 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 1823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:13,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1423 Valid, 1506 Invalid, 1823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 17:50:13,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2021-12-06 17:50:14,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3760. [2021-12-06 17:50:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 3132 states have (on average 1.603448275862069) internal successors, (5022), 3139 states have internal predecessors, (5022), 599 states have call successors, (599), 24 states have call predecessors, (599), 28 states have return successors, (672), 598 states have call predecessors, (672), 598 states have call successors, (672) [2021-12-06 17:50:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 6293 transitions. [2021-12-06 17:50:14,049 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 6293 transitions. Word has length 124 [2021-12-06 17:50:14,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:50:14,049 INFO L470 AbstractCegarLoop]: Abstraction has 3760 states and 6293 transitions. [2021-12-06 17:50:14,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 6293 transitions. [2021-12-06 17:50:14,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-06 17:50:14,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:50:14,058 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 17:50:14,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 17:50:14,059 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:50:14,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:50:14,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1859394648, now seen corresponding path program 1 times [2021-12-06 17:50:14,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:50:14,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501686848] [2021-12-06 17:50:14,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:14,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:50:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:14,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:50:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:14,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:50:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:14,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:50:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:14,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:50:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:14,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:14,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:50:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:14,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 17:50:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:14,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 17:50:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:14,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 17:50:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:14,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 17:50:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:14,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 17:50:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:14,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 17:50:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:14,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 17:50:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:14,149 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:50:14,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:50:14,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501686848] [2021-12-06 17:50:14,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501686848] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:50:14,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:50:14,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:50:14,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730671851] [2021-12-06 17:50:14,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:50:14,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:50:14,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:50:14,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:50:14,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:50:14,151 INFO L87 Difference]: Start difference. First operand 3760 states and 6293 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:15,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:15,351 INFO L93 Difference]: Finished difference Result 9067 states and 15482 transitions. [2021-12-06 17:50:15,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:50:15,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2021-12-06 17:50:15,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:15,381 INFO L225 Difference]: With dead ends: 9067 [2021-12-06 17:50:15,381 INFO L226 Difference]: Without dead ends: 6124 [2021-12-06 17:50:15,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:50:15,387 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 1407 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:15,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1422 Valid, 1547 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 17:50:15,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6124 states. [2021-12-06 17:50:15,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6124 to 5901. [2021-12-06 17:50:15,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5901 states, 4897 states have (on average 1.5985297120686135) internal successors, (7828), 4904 states have internal predecessors, (7828), 975 states have call successors, (975), 24 states have call predecessors, (975), 28 states have return successors, (1092), 974 states have call predecessors, (1092), 974 states have call successors, (1092) [2021-12-06 17:50:15,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5901 states to 5901 states and 9895 transitions. [2021-12-06 17:50:15,724 INFO L78 Accepts]: Start accepts. Automaton has 5901 states and 9895 transitions. Word has length 125 [2021-12-06 17:50:15,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:50:15,725 INFO L470 AbstractCegarLoop]: Abstraction has 5901 states and 9895 transitions. [2021-12-06 17:50:15,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:15,725 INFO L276 IsEmpty]: Start isEmpty. Operand 5901 states and 9895 transitions. [2021-12-06 17:50:15,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-06 17:50:15,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:50:15,735 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 17:50:15,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 17:50:15,735 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:50:15,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:50:15,735 INFO L85 PathProgramCache]: Analyzing trace with hash 433004377, now seen corresponding path program 1 times [2021-12-06 17:50:15,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:50:15,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66220757] [2021-12-06 17:50:15,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:15,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:50:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:15,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:50:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:15,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:50:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:15,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:50:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:15,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:50:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:15,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:15,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:50:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:15,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:50:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:15,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 17:50:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:15,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 17:50:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:15,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 17:50:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:15,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 17:50:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:15,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 17:50:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:15,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 17:50:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:15,808 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:50:15,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:50:15,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66220757] [2021-12-06 17:50:15,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66220757] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:50:15,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:50:15,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:50:15,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570092967] [2021-12-06 17:50:15,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:50:15,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:50:15,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:50:15,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:50:15,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:50:15,809 INFO L87 Difference]: Start difference. First operand 5901 states and 9895 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:17,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:17,171 INFO L93 Difference]: Finished difference Result 14684 states and 25095 transitions. [2021-12-06 17:50:17,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:50:17,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2021-12-06 17:50:17,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:17,205 INFO L225 Difference]: With dead ends: 14684 [2021-12-06 17:50:17,205 INFO L226 Difference]: Without dead ends: 10002 [2021-12-06 17:50:17,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:50:17,216 INFO L933 BasicCegarLoop]: 667 mSDtfsCounter, 1573 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:17,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1588 Valid, 1484 Invalid, 1762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 17:50:17,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10002 states. [2021-12-06 17:50:17,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10002 to 9779. [2021-12-06 17:50:17,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9779 states, 8169 states have (on average 1.5971355123026074) internal successors, (13047), 8176 states have internal predecessors, (13047), 1581 states have call successors, (1581), 24 states have call predecessors, (1581), 28 states have return successors, (1776), 1580 states have call predecessors, (1776), 1580 states have call successors, (1776) [2021-12-06 17:50:17,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9779 states to 9779 states and 16404 transitions. [2021-12-06 17:50:17,711 INFO L78 Accepts]: Start accepts. Automaton has 9779 states and 16404 transitions. Word has length 126 [2021-12-06 17:50:17,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:50:17,711 INFO L470 AbstractCegarLoop]: Abstraction has 9779 states and 16404 transitions. [2021-12-06 17:50:17,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:17,712 INFO L276 IsEmpty]: Start isEmpty. Operand 9779 states and 16404 transitions. [2021-12-06 17:50:17,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 17:50:17,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:50:17,726 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 17:50:17,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 17:50:17,726 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:50:17,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:50:17,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1929234490, now seen corresponding path program 1 times [2021-12-06 17:50:17,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:50:17,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991509507] [2021-12-06 17:50:17,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:17,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:50:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:50:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:17,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:50:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:17,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:50:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:17,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:50:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:17,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:17,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:50:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:17,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:50:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:17,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:50:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:17,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 17:50:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:17,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:50:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:17,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 17:50:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:17,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:50:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:17,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 17:50:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:17,797 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:50:17,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:50:17,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991509507] [2021-12-06 17:50:17,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991509507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:50:17,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:50:17,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:50:17,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930496362] [2021-12-06 17:50:17,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:50:17,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:50:17,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:50:17,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:50:17,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:50:17,799 INFO L87 Difference]: Start difference. First operand 9779 states and 16404 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:19,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:19,352 INFO L93 Difference]: Finished difference Result 25393 states and 43376 transitions. [2021-12-06 17:50:19,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:50:19,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2021-12-06 17:50:19,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:19,409 INFO L225 Difference]: With dead ends: 25393 [2021-12-06 17:50:19,410 INFO L226 Difference]: Without dead ends: 17315 [2021-12-06 17:50:19,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:50:19,427 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 1426 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:19,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1441 Valid, 1563 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 17:50:19,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17315 states. [2021-12-06 17:50:20,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17315 to 17092. [2021-12-06 17:50:20,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17092 states, 14279 states have (on average 1.5892569507668604) internal successors, (22693), 14286 states have internal predecessors, (22693), 2784 states have call successors, (2784), 24 states have call predecessors, (2784), 28 states have return successors, (3123), 2783 states have call predecessors, (3123), 2783 states have call successors, (3123) [2021-12-06 17:50:20,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17092 states to 17092 states and 28600 transitions. [2021-12-06 17:50:20,328 INFO L78 Accepts]: Start accepts. Automaton has 17092 states and 28600 transitions. Word has length 127 [2021-12-06 17:50:20,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:50:20,329 INFO L470 AbstractCegarLoop]: Abstraction has 17092 states and 28600 transitions. [2021-12-06 17:50:20,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:20,329 INFO L276 IsEmpty]: Start isEmpty. Operand 17092 states and 28600 transitions. [2021-12-06 17:50:20,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-06 17:50:20,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:50:20,348 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 17:50:20,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 17:50:20,348 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:50:20,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:50:20,349 INFO L85 PathProgramCache]: Analyzing trace with hash -709818470, now seen corresponding path program 1 times [2021-12-06 17:50:20,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:50:20,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960692826] [2021-12-06 17:50:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:20,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:50:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:20,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:50:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:20,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:50:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:20,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:50:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:20,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:50:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:20,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:20,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:50:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:20,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 17:50:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:20,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:50:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:20,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 17:50:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:20,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 17:50:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:20,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 17:50:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:20,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 17:50:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:20,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 17:50:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:20,422 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:50:20,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:50:20,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960692826] [2021-12-06 17:50:20,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960692826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:50:20,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:50:20,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:50:20,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262288032] [2021-12-06 17:50:20,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:50:20,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:50:20,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:50:20,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:50:20,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:50:20,424 INFO L87 Difference]: Start difference. First operand 17092 states and 28600 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:22,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:22,705 INFO L93 Difference]: Finished difference Result 45369 states and 77389 transitions. [2021-12-06 17:50:22,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:50:22,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2021-12-06 17:50:22,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:22,804 INFO L225 Difference]: With dead ends: 45369 [2021-12-06 17:50:22,804 INFO L226 Difference]: Without dead ends: 30655 [2021-12-06 17:50:22,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:50:22,824 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1436 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:22,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 1505 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 17:50:22,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30655 states. [2021-12-06 17:50:24,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30655 to 30432. [2021-12-06 17:50:24,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30432 states, 25580 states have (on average 1.585457388584832) internal successors, (40556), 25587 states have internal predecessors, (40556), 4823 states have call successors, (4823), 24 states have call predecessors, (4823), 28 states have return successors, (5436), 4822 states have call predecessors, (5436), 4822 states have call successors, (5436) [2021-12-06 17:50:24,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30432 states to 30432 states and 50815 transitions. [2021-12-06 17:50:24,346 INFO L78 Accepts]: Start accepts. Automaton has 30432 states and 50815 transitions. Word has length 128 [2021-12-06 17:50:24,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:50:24,346 INFO L470 AbstractCegarLoop]: Abstraction has 30432 states and 50815 transitions. [2021-12-06 17:50:24,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:24,346 INFO L276 IsEmpty]: Start isEmpty. Operand 30432 states and 50815 transitions. [2021-12-06 17:50:24,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-06 17:50:24,367 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:50:24,367 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 17:50:24,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 17:50:24,367 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:50:24,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:50:24,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1274785960, now seen corresponding path program 1 times [2021-12-06 17:50:24,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:50:24,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807039197] [2021-12-06 17:50:24,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:24,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:50:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:24,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:50:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:24,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:50:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:24,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:50:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:24,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:50:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:24,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:24,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:50:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:24,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 17:50:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:24,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 17:50:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:24,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 17:50:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:24,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 17:50:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:24,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 17:50:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:24,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 17:50:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:24,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 17:50:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:50:24,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:50:24,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807039197] [2021-12-06 17:50:24,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807039197] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:50:24,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:50:24,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:50:24,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188515839] [2021-12-06 17:50:24,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:50:24,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:50:24,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:50:24,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:50:24,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:50:24,453 INFO L87 Difference]: Start difference. First operand 30432 states and 50815 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:27,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:27,758 INFO L93 Difference]: Finished difference Result 83106 states and 140913 transitions. [2021-12-06 17:50:27,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:50:27,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2021-12-06 17:50:27,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:27,904 INFO L225 Difference]: With dead ends: 83106 [2021-12-06 17:50:27,904 INFO L226 Difference]: Without dead ends: 55864 [2021-12-06 17:50:27,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:50:27,953 INFO L933 BasicCegarLoop]: 677 mSDtfsCounter, 1499 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:27,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 1469 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [679 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 17:50:27,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55864 states. [2021-12-06 17:50:30,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55864 to 55641. [2021-12-06 17:50:30,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55641 states, 47074 states have (on average 1.5802141309427709) internal successors, (74387), 47081 states have internal predecessors, (74387), 8538 states have call successors, (8538), 24 states have call predecessors, (8538), 28 states have return successors, (9683), 8537 states have call predecessors, (9683), 8537 states have call successors, (9683) [2021-12-06 17:50:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55641 states to 55641 states and 92608 transitions. [2021-12-06 17:50:30,976 INFO L78 Accepts]: Start accepts. Automaton has 55641 states and 92608 transitions. Word has length 129 [2021-12-06 17:50:30,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:50:30,976 INFO L470 AbstractCegarLoop]: Abstraction has 55641 states and 92608 transitions. [2021-12-06 17:50:30,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:30,976 INFO L276 IsEmpty]: Start isEmpty. Operand 55641 states and 92608 transitions. [2021-12-06 17:50:31,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 17:50:31,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:50:31,001 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 17:50:31,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 17:50:31,002 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:50:31,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:50:31,002 INFO L85 PathProgramCache]: Analyzing trace with hash -543713350, now seen corresponding path program 1 times [2021-12-06 17:50:31,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:50:31,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060213302] [2021-12-06 17:50:31,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:31,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:50:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:50:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:50:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:50:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:50:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:50:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 17:50:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 17:50:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 17:50:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 17:50:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:50:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 17:50:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 17:50:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,084 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:50:31,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:50:31,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060213302] [2021-12-06 17:50:31,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060213302] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:50:31,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:50:31,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:50:31,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948417936] [2021-12-06 17:50:31,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:50:31,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:50:31,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:50:31,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:50:31,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:50:31,086 INFO L87 Difference]: Start difference. First operand 55641 states and 92608 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:36,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:36,044 INFO L93 Difference]: Finished difference Result 104162 states and 176899 transitions. [2021-12-06 17:50:36,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:50:36,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2021-12-06 17:50:36,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:36,309 INFO L225 Difference]: With dead ends: 104162 [2021-12-06 17:50:36,309 INFO L226 Difference]: Without dead ends: 103938 [2021-12-06 17:50:36,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:50:36,338 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 1399 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:36,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1414 Valid, 1519 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 17:50:36,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103938 states. [2021-12-06 17:50:41,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103938 to 103715. [2021-12-06 17:50:41,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103715 states, 88349 states have (on average 1.573509603957034) internal successors, (139018), 88356 states have internal predecessors, (139018), 15337 states have call successors, (15337), 24 states have call predecessors, (15337), 28 states have return successors, (17528), 15336 states have call predecessors, (17528), 15336 states have call successors, (17528) [2021-12-06 17:50:41,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103715 states to 103715 states and 171883 transitions. [2021-12-06 17:50:41,911 INFO L78 Accepts]: Start accepts. Automaton has 103715 states and 171883 transitions. Word has length 130 [2021-12-06 17:50:41,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:50:41,912 INFO L470 AbstractCegarLoop]: Abstraction has 103715 states and 171883 transitions. [2021-12-06 17:50:41,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:50:41,912 INFO L276 IsEmpty]: Start isEmpty. Operand 103715 states and 171883 transitions. [2021-12-06 17:50:41,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 17:50:41,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:50:41,935 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 17:50:41,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 17:50:41,936 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:50:41,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:50:41,936 INFO L85 PathProgramCache]: Analyzing trace with hash -808213529, now seen corresponding path program 1 times [2021-12-06 17:50:41,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:50:41,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902150945] [2021-12-06 17:50:41,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:41,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:50:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:41,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:50:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:42,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:50:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:42,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:50:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:42,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:50:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:42,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:42,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:50:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:42,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 17:50:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:42,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 17:50:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:42,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 17:50:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:42,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 17:50:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:42,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:50:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:42,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 17:50:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:42,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 17:50:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:50:42,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:50:42,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902150945] [2021-12-06 17:50:42,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902150945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:50:42,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:50:42,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-06 17:50:42,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750967433] [2021-12-06 17:50:42,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:50:42,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 17:50:42,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:50:42,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 17:50:42,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-12-06 17:50:42,084 INFO L87 Difference]: Start difference. First operand 103715 states and 171883 transitions. Second operand has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-06 17:50:56,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:56,247 INFO L93 Difference]: Finished difference Result 207840 states and 356289 transitions. [2021-12-06 17:50:56,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-06 17:50:56,248 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 131 [2021-12-06 17:50:56,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:56,973 INFO L225 Difference]: With dead ends: 207840 [2021-12-06 17:50:56,973 INFO L226 Difference]: Without dead ends: 207622 [2021-12-06 17:50:57,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1284 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=872, Invalid=3820, Unknown=0, NotChecked=0, Total=4692 [2021-12-06 17:50:57,033 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 5489 mSDsluCounter, 3534 mSDsCounter, 0 mSdLazyCounter, 12540 mSolverCounterSat, 3565 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5489 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 16105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3565 IncrementalHoareTripleChecker+Valid, 12540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:57,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5489 Valid, 4325 Invalid, 16105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3565 Valid, 12540 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-06 17:50:57,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207622 states. [2021-12-06 17:51:07,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207622 to 206742. [2021-12-06 17:51:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206742 states, 176143 states have (on average 1.5741017241672959) internal successors, (277267), 176050 states have internal predecessors, (277267), 30523 states have call successors, (30523), 65 states have call predecessors, (30523), 75 states have return successors, (38194), 30634 states have call predecessors, (38194), 30520 states have call successors, (38194) [2021-12-06 17:51:08,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206742 states to 206742 states and 345984 transitions. [2021-12-06 17:51:08,056 INFO L78 Accepts]: Start accepts. Automaton has 206742 states and 345984 transitions. Word has length 131 [2021-12-06 17:51:08,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:51:08,056 INFO L470 AbstractCegarLoop]: Abstraction has 206742 states and 345984 transitions. [2021-12-06 17:51:08,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-06 17:51:08,056 INFO L276 IsEmpty]: Start isEmpty. Operand 206742 states and 345984 transitions. [2021-12-06 17:51:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 17:51:08,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:51:08,101 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 17:51:08,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 17:51:08,101 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:51:08,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:51:08,101 INFO L85 PathProgramCache]: Analyzing trace with hash 387858403, now seen corresponding path program 1 times [2021-12-06 17:51:08,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:51:08,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029164056] [2021-12-06 17:51:08,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:51:08,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:51:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:08,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:51:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:08,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:51:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:08,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:51:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:08,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:51:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:08,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:51:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:08,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:51:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:08,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 17:51:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:08,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 17:51:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:08,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 17:51:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:08,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 17:51:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:08,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:51:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:08,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 17:51:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:08,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 17:51:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:08,212 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:51:08,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:51:08,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029164056] [2021-12-06 17:51:08,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029164056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:51:08,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:51:08,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 17:51:08,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168376733] [2021-12-06 17:51:08,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:51:08,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 17:51:08,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:51:08,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 17:51:08,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:51:08,214 INFO L87 Difference]: Start difference. First operand 206742 states and 345984 transitions. Second operand has 14 states, 14 states have (on average 6.5) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-12-06 17:51:19,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:51:19,711 INFO L93 Difference]: Finished difference Result 209450 states and 356606 transitions. [2021-12-06 17:51:19,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 17:51:19,712 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 132 [2021-12-06 17:51:19,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:51:20,362 INFO L225 Difference]: With dead ends: 209450 [2021-12-06 17:51:20,362 INFO L226 Difference]: Without dead ends: 207582 [2021-12-06 17:51:20,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=245, Invalid=811, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 17:51:20,429 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 3279 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 4729 mSolverCounterSat, 1586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3294 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 6315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1586 IncrementalHoareTripleChecker+Valid, 4729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:51:20,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3294 Valid, 2869 Invalid, 6315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1586 Valid, 4729 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 17:51:20,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207582 states. [2021-12-06 17:51:31,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207582 to 206833. [2021-12-06 17:51:31,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206833 states, 176209 states have (on average 1.574039918505865) internal successors, (277360), 176121 states have internal predecessors, (277360), 30545 states have call successors, (30545), 68 states have call predecessors, (30545), 78 states have return successors, (38226), 30654 states have call predecessors, (38226), 30542 states have call successors, (38226) [2021-12-06 17:51:32,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206833 states to 206833 states and 346131 transitions. [2021-12-06 17:51:32,190 INFO L78 Accepts]: Start accepts. Automaton has 206833 states and 346131 transitions. Word has length 132 [2021-12-06 17:51:32,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:51:32,190 INFO L470 AbstractCegarLoop]: Abstraction has 206833 states and 346131 transitions. [2021-12-06 17:51:32,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-12-06 17:51:32,191 INFO L276 IsEmpty]: Start isEmpty. Operand 206833 states and 346131 transitions. [2021-12-06 17:51:32,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 17:51:32,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:51:32,235 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 17:51:32,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 17:51:32,236 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:51:32,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:51:32,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1070746074, now seen corresponding path program 1 times [2021-12-06 17:51:32,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:51:32,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597934224] [2021-12-06 17:51:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:51:32,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:51:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:32,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:51:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:32,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:51:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:32,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:51:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:51:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:32,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:51:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:32,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:51:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:32,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 17:51:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:32,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 17:51:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:32,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 17:51:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:32,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 17:51:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:32,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:51:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:32,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 17:51:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:32,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 17:51:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:32,314 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:51:32,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:51:32,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597934224] [2021-12-06 17:51:32,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597934224] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:51:32,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:51:32,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 17:51:32,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931824161] [2021-12-06 17:51:32,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:51:32,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:51:32,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:51:32,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:51:32,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:51:32,316 INFO L87 Difference]: Start difference. First operand 206833 states and 346131 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:51:48,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:51:48,749 INFO L93 Difference]: Finished difference Result 313319 states and 542763 transitions. [2021-12-06 17:51:48,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 17:51:48,750 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2021-12-06 17:51:48,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:51:49,751 INFO L225 Difference]: With dead ends: 313319 [2021-12-06 17:51:49,751 INFO L226 Difference]: Without dead ends: 312685 [2021-12-06 17:51:49,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2021-12-06 17:51:49,845 INFO L933 BasicCegarLoop]: 1251 mSDtfsCounter, 3811 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 4385 mSolverCounterSat, 1875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3821 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 6260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1875 IncrementalHoareTripleChecker+Valid, 4385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:51:49,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3821 Valid, 2634 Invalid, 6260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1875 Valid, 4385 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 17:51:50,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312685 states. [2021-12-06 17:52:07,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312685 to 310769. [2021-12-06 17:52:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310769 states, 264676 states have (on average 1.5737921080868684) internal successors, (416545), 264511 states have internal predecessors, (416545), 45906 states have call successors, (45906), 157 states have call predecessors, (45906), 186 states have return successors, (64475), 46130 states have call predecessors, (64475), 45898 states have call successors, (64475) [2021-12-06 17:52:08,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310769 states to 310769 states and 526926 transitions. [2021-12-06 17:52:08,872 INFO L78 Accepts]: Start accepts. Automaton has 310769 states and 526926 transitions. Word has length 132 [2021-12-06 17:52:08,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:52:08,872 INFO L470 AbstractCegarLoop]: Abstraction has 310769 states and 526926 transitions. [2021-12-06 17:52:08,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:52:08,872 INFO L276 IsEmpty]: Start isEmpty. Operand 310769 states and 526926 transitions. [2021-12-06 17:52:08,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 17:52:08,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:52:08,943 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 17:52:08,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 17:52:08,944 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:52:08,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:52:08,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1979456741, now seen corresponding path program 1 times [2021-12-06 17:52:08,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:52:08,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740113070] [2021-12-06 17:52:08,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:52:08,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:52:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:08,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:52:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:08,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:52:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:08,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:52:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:08,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:52:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:08,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:52:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:08,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:52:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:09,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 17:52:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:09,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 17:52:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:09,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 17:52:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:09,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 17:52:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:09,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:52:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:09,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 17:52:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:09,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 17:52:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:09,016 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:52:09,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:52:09,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740113070] [2021-12-06 17:52:09,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740113070] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:52:09,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:52:09,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:52:09,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373192327] [2021-12-06 17:52:09,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:52:09,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:52:09,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:52:09,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:52:09,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:52:09,017 INFO L87 Difference]: Start difference. First operand 310769 states and 526926 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:52:24,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:52:24,296 INFO L93 Difference]: Finished difference Result 315166 states and 543168 transitions. [2021-12-06 17:52:24,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 17:52:24,297 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2021-12-06 17:52:24,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:52:25,426 INFO L225 Difference]: With dead ends: 315166 [2021-12-06 17:52:25,426 INFO L226 Difference]: Without dead ends: 312906 [2021-12-06 17:52:25,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:52:25,514 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1895 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 1658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:52:25,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1909 Valid, 1348 Invalid, 1658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 17:52:25,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312906 states. [2021-12-06 17:52:43,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312906 to 310802. [2021-12-06 17:52:43,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310802 states, 264716 states have (on average 1.5737809577056165) internal successors, (416605), 264552 states have internal predecessors, (416605), 45861 states have call successors, (45861), 193 states have call predecessors, (45861), 224 states have return successors, (64407), 46084 states have call predecessors, (64407), 45854 states have call successors, (64407) [2021-12-06 17:52:45,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310802 states to 310802 states and 526873 transitions. [2021-12-06 17:52:45,028 INFO L78 Accepts]: Start accepts. Automaton has 310802 states and 526873 transitions. Word has length 132 [2021-12-06 17:52:45,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:52:45,029 INFO L470 AbstractCegarLoop]: Abstraction has 310802 states and 526873 transitions. [2021-12-06 17:52:45,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 17:52:45,029 INFO L276 IsEmpty]: Start isEmpty. Operand 310802 states and 526873 transitions. [2021-12-06 17:52:46,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-06 17:52:46,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:52:46,208 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:52:46,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 17:52:46,208 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:52:46,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:52:46,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1860267196, now seen corresponding path program 1 times [2021-12-06 17:52:46,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:52:46,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370782522] [2021-12-06 17:52:46,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:52:46,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:52:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:52:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:52:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:52:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:52:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:52:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:52:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 17:52:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:52:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:52:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:52:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:52:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:52:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 17:52:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:52:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:52:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:52:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:52:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:52:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:52:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 17:52:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 17:52:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 17:52:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-06 17:52:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-06 17:52:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:46,355 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 17:52:46,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:52:46,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370782522] [2021-12-06 17:52:46,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370782522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:52:46,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:52:46,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:52:46,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360986564] [2021-12-06 17:52:46,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:52:46,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:52:46,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:52:46,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:52:46,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:52:46,357 INFO L87 Difference]: Start difference. First operand 310802 states and 526873 transitions. Second operand has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 3 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 17:53:02,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:53:02,590 INFO L93 Difference]: Finished difference Result 314192 states and 541731 transitions. [2021-12-06 17:53:02,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 17:53:02,591 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 3 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 226 [2021-12-06 17:53:02,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:53:03,662 INFO L225 Difference]: With dead ends: 314192 [2021-12-06 17:53:03,662 INFO L226 Difference]: Without dead ends: 312915 [2021-12-06 17:53:03,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2021-12-06 17:53:03,751 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1167 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 2738 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:53:03,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1167 Valid, 2180 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2738 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 17:53:03,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312915 states. [2021-12-06 17:53:22,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312915 to 310802. [2021-12-06 17:53:22,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310802 states, 264716 states have (on average 1.5737696248054518) internal successors, (416602), 264552 states have internal predecessors, (416602), 45861 states have call successors, (45861), 193 states have call predecessors, (45861), 224 states have return successors, (64407), 46084 states have call predecessors, (64407), 45854 states have call successors, (64407) [2021-12-06 17:53:23,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310802 states to 310802 states and 526870 transitions. [2021-12-06 17:53:23,457 INFO L78 Accepts]: Start accepts. Automaton has 310802 states and 526870 transitions. Word has length 226 [2021-12-06 17:53:23,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:53:23,458 INFO L470 AbstractCegarLoop]: Abstraction has 310802 states and 526870 transitions. [2021-12-06 17:53:23,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 3 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 17:53:23,458 INFO L276 IsEmpty]: Start isEmpty. Operand 310802 states and 526870 transitions. [2021-12-06 17:53:24,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-06 17:53:24,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:53:24,527 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:53:24,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 17:53:24,527 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:53:24,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:53:24,527 INFO L85 PathProgramCache]: Analyzing trace with hash -2016247738, now seen corresponding path program 1 times [2021-12-06 17:53:24,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:53:24,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464306681] [2021-12-06 17:53:24,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:53:24,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:53:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:53:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:53:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:53:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:53:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:53:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:53:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 17:53:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:53:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:53:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:53:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:53:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:53:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 17:53:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:53:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:53:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:53:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:53:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:53:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:53:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 17:53:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 17:53:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 17:53:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-06 17:53:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-06 17:53:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 17:53:24,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:53:24,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464306681] [2021-12-06 17:53:24,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464306681] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:53:24,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:53:24,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:53:24,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055020843] [2021-12-06 17:53:24,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:53:24,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:53:24,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:53:24,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:53:24,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:53:24,682 INFO L87 Difference]: Start difference. First operand 310802 states and 526870 transitions. Second operand has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 3 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 17:53:41,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:53:41,213 INFO L93 Difference]: Finished difference Result 313331 states and 540411 transitions. [2021-12-06 17:53:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 17:53:41,213 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 3 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 226 [2021-12-06 17:53:41,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:53:42,216 INFO L225 Difference]: With dead ends: 313331 [2021-12-06 17:53:42,216 INFO L226 Difference]: Without dead ends: 312051 [2021-12-06 17:53:42,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-12-06 17:53:42,309 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 1339 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 3155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:53:42,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1339 Valid, 2062 Invalid, 3155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 17:53:42,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312051 states. [2021-12-06 17:54:00,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312051 to 309602. [2021-12-06 17:54:00,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309602 states, 263829 states have (on average 1.574436472108828) internal successors, (415382), 263639 states have internal predecessors, (415382), 45619 states have call successors, (45619), 139 states have call predecessors, (45619), 153 states have return successors, (64102), 45836 states have call predecessors, (64102), 45614 states have call successors, (64102) [2021-12-06 17:54:01,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309602 states to 309602 states and 525103 transitions. [2021-12-06 17:54:01,632 INFO L78 Accepts]: Start accepts. Automaton has 309602 states and 525103 transitions. Word has length 226 [2021-12-06 17:54:01,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:54:01,632 INFO L470 AbstractCegarLoop]: Abstraction has 309602 states and 525103 transitions. [2021-12-06 17:54:01,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 3 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 17:54:01,632 INFO L276 IsEmpty]: Start isEmpty. Operand 309602 states and 525103 transitions. [2021-12-06 17:54:02,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-12-06 17:54:02,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:54:02,593 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:54:02,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 17:54:02,593 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:54:02,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:54:02,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1782459419, now seen corresponding path program 1 times [2021-12-06 17:54:02,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:54:02,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173460838] [2021-12-06 17:54:02,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:54:02,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:54:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:54:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:54:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:54:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:54:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:54:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:54:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 17:54:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:54:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:54:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:54:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:54:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:54:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 17:54:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 17:54:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 17:54:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 17:54:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:54:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 17:54:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:54:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 17:54:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 17:54:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 17:54:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-06 17:54:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-06 17:54:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:02,877 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-06 17:54:02,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:54:02,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173460838] [2021-12-06 17:54:02,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173460838] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:54:02,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906567965] [2021-12-06 17:54:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:54:02,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:54:02,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:54:02,879 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:54:02,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 17:54:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:03,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:54:03,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:54:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-06 17:54:03,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:54:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 17:54:03,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906567965] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:54:03,810 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:54:03,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9, 10] total 38 [2021-12-06 17:54:03,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236719062] [2021-12-06 17:54:03,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:54:03,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 17:54:03,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:54:03,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 17:54:03,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1301, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 17:54:03,812 INFO L87 Difference]: Start difference. First operand 309602 states and 525103 transitions. Second operand has 38 states, 36 states have (on average 9.86111111111111) internal successors, (355), 30 states have internal predecessors, (355), 12 states have call successors, (63), 10 states have call predecessors, (63), 16 states have return successors, (61), 15 states have call predecessors, (61), 12 states have call successors, (61) [2021-12-06 17:55:29,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:55:29,486 INFO L93 Difference]: Finished difference Result 940144 states and 1646206 transitions. [2021-12-06 17:55:29,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2021-12-06 17:55:29,487 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 9.86111111111111) internal successors, (355), 30 states have internal predecessors, (355), 12 states have call successors, (63), 10 states have call predecessors, (63), 16 states have return successors, (61), 15 states have call predecessors, (61), 12 states have call successors, (61) Word has length 227 [2021-12-06 17:55:29,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:55:33,355 INFO L225 Difference]: With dead ends: 940144 [2021-12-06 17:55:33,355 INFO L226 Difference]: Without dead ends: 932877 [2021-12-06 17:55:33,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24359 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=5946, Invalid=58316, Unknown=0, NotChecked=0, Total=64262 [2021-12-06 17:55:33,677 INFO L933 BasicCegarLoop]: 2074 mSDtfsCounter, 17371 mSDsluCounter, 10411 mSDsCounter, 0 mSdLazyCounter, 84315 mSolverCounterSat, 17114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17371 SdHoareTripleChecker+Valid, 12485 SdHoareTripleChecker+Invalid, 101429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 17114 IncrementalHoareTripleChecker+Valid, 84315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:55:33,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17371 Valid, 12485 Invalid, 101429 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [17114 Valid, 84315 Invalid, 0 Unknown, 0 Unchecked, 30.2s Time] [2021-12-06 17:55:34,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932877 states. [2021-12-06 17:56:31,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932877 to 920666. [2021-12-06 17:56:32,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920666 states, 784645 states have (on average 1.574891830063277) internal successors, (1235731), 783801 states have internal predecessors, (1235731), 135555 states have call successors, (135555), 391 states have call predecessors, (135555), 465 states have return successors, (212946), 136508 states have call predecessors, (212946), 135541 states have call successors, (212946) [2021-12-06 17:56:36,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920666 states to 920666 states and 1584232 transitions. [2021-12-06 17:56:36,090 INFO L78 Accepts]: Start accepts. Automaton has 920666 states and 1584232 transitions. Word has length 227 [2021-12-06 17:56:36,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:56:36,091 INFO L470 AbstractCegarLoop]: Abstraction has 920666 states and 1584232 transitions. [2021-12-06 17:56:36,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 9.86111111111111) internal successors, (355), 30 states have internal predecessors, (355), 12 states have call successors, (63), 10 states have call predecessors, (63), 16 states have return successors, (61), 15 states have call predecessors, (61), 12 states have call successors, (61) [2021-12-06 17:56:36,091 INFO L276 IsEmpty]: Start isEmpty. Operand 920666 states and 1584232 transitions. [2021-12-06 17:56:40,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-12-06 17:56:40,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:56:40,030 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:56:40,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 17:56:40,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 17:56:40,232 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:56:40,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:56:40,233 INFO L85 PathProgramCache]: Analyzing trace with hash -526308967, now seen corresponding path program 1 times [2021-12-06 17:56:40,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:56:40,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082167404] [2021-12-06 17:56:40,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:56:40,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:56:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:56:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:56:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:56:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:56:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:56:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 17:56:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 17:56:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:56:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:56:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:56:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:56:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:56:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 17:56:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 17:56:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 17:56:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 17:56:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:56:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:56:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:56:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-06 17:56:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 17:56:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-06 17:56:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-06 17:56:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-06 17:56:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-06 17:56:40,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:56:40,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082167404] [2021-12-06 17:56:40,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082167404] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:56:40,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667250392] [2021-12-06 17:56:40,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:56:40,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:56:40,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:56:40,630 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:56:40,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d31e903-10d7-41cd-b701-4aade7d24304/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 17:56:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:40,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:56:40,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:56:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-06 17:56:40,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:56:40,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667250392] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:56:40,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:56:40,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2021-12-06 17:56:40,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526319144] [2021-12-06 17:56:40,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:56:40,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:56:40,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:56:40,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:56:40,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:56:40,953 INFO L87 Difference]: Start difference. First operand 920666 states and 1584232 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 17:57:32,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:57:32,256 INFO L93 Difference]: Finished difference Result 1531701 states and 2645386 transitions. [2021-12-06 17:57:32,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:57:32,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 229 [2021-12-06 17:57:32,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:57:36,112 INFO L225 Difference]: With dead ends: 1531701 [2021-12-06 17:57:36,112 INFO L226 Difference]: Without dead ends: 920702 [2021-12-06 17:57:37,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:57:37,466 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 131 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:57:37,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 2049 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:57:38,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920702 states. [2021-12-06 17:58:39,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920702 to 920666. [2021-12-06 17:58:40,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920666 states, 784645 states have (on average 1.5748892811398785) internal successors, (1235729), 783801 states have internal predecessors, (1235729), 135555 states have call successors, (135555), 391 states have call predecessors, (135555), 465 states have return successors, (212946), 136508 states have call predecessors, (212946), 135541 states have call successors, (212946) [2021-12-06 17:58:44,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920666 states to 920666 states and 1584230 transitions. [2021-12-06 17:58:44,134 INFO L78 Accepts]: Start accepts. Automaton has 920666 states and 1584230 transitions. Word has length 229 [2021-12-06 17:58:44,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:58:44,134 INFO L470 AbstractCegarLoop]: Abstraction has 920666 states and 1584230 transitions. [2021-12-06 17:58:44,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 17:58:44,135 INFO L276 IsEmpty]: Start isEmpty. Operand 920666 states and 1584230 transitions.