./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product28.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_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/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_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/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_fece5600-99b0-4c3d-99be-b847b65cbd3b/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 25a137cac87a0e16e274f725e7bbd21e6c99dd9079b93c306fff086ae4fee1e1 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:08:01,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:08:01,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:08:01,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:08:01,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:08:01,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:08:01,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:08:01,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:08:01,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:08:01,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:08:01,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:08:01,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:08:01,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:08:01,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:08:01,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:08:01,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:08:01,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:08:01,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:08:01,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:08:01,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:08:01,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:08:01,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:08:01,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:08:01,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:08:01,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:08:01,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:08:01,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:08:01,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:08:01,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:08:01,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:08:01,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:08:01,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:08:01,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:08:01,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:08:01,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:08:01,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:08:01,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:08:01,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:08:01,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:08:01,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:08:01,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:08:01,660 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 23:08:01,678 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:08:01,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:08:01,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:08:01,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:08:01,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:08:01,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:08:01,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:08:01,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:08:01,685 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:08:01,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:08:01,685 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:08:01,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:08:01,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:08:01,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:08:01,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:08:01,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:08:01,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:08:01,686 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:08:01,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:08:01,686 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:08:01,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:08:01,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:08:01,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:08:01,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:08:01,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:08:01,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:08:01,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:08:01,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:08:01,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:08:01,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:08:01,687 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:08:01,687 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:08:01,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:08:01,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:08:01,688 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_fece5600-99b0-4c3d-99be-b847b65cbd3b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25a137cac87a0e16e274f725e7bbd21e6c99dd9079b93c306fff086ae4fee1e1 [2021-12-06 23:08:01,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:08:01,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:08:01,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:08:01,896 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:08:01,897 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:08:01,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec1_product28.cil.c [2021-12-06 23:08:01,946 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/data/a63f36690/120b5d5c57d0447481f1f1eb0189021f/FLAG169a6883d [2021-12-06 23:08:02,400 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:08:02,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/sv-benchmarks/c/product-lines/email_spec1_product28.cil.c [2021-12-06 23:08:02,414 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/data/a63f36690/120b5d5c57d0447481f1f1eb0189021f/FLAG169a6883d [2021-12-06 23:08:02,426 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/data/a63f36690/120b5d5c57d0447481f1f1eb0189021f [2021-12-06 23:08:02,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:08:02,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:08:02,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:08:02,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:08:02,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:08:02,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:08:02" (1/1) ... [2021-12-06 23:08:02,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37e005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:02, skipping insertion in model container [2021-12-06 23:08:02,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:08:02" (1/1) ... [2021-12-06 23:08:02,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:08:02,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:08:02,863 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_fece5600-99b0-4c3d-99be-b847b65cbd3b/sv-benchmarks/c/product-lines/email_spec1_product28.cil.c[51091,51104] [2021-12-06 23:08:02,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:08:02,903 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:08:02,955 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_fece5600-99b0-4c3d-99be-b847b65cbd3b/sv-benchmarks/c/product-lines/email_spec1_product28.cil.c[51091,51104] [2021-12-06 23:08:02,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:08:02,990 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:08:02,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:02 WrapperNode [2021-12-06 23:08:02,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:08:02,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:08:02,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:08:02,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:08:02,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:02" (1/1) ... [2021-12-06 23:08:03,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:02" (1/1) ... [2021-12-06 23:08:03,049 INFO L137 Inliner]: procedures = 128, calls = 208, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 854 [2021-12-06 23:08:03,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:08:03,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:08:03,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:08:03,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:08:03,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:02" (1/1) ... [2021-12-06 23:08:03,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:02" (1/1) ... [2021-12-06 23:08:03,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:02" (1/1) ... [2021-12-06 23:08:03,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:02" (1/1) ... [2021-12-06 23:08:03,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:02" (1/1) ... [2021-12-06 23:08:03,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:02" (1/1) ... [2021-12-06 23:08:03,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:02" (1/1) ... [2021-12-06 23:08:03,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:08:03,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:08:03,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:08:03,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:08:03,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:02" (1/1) ... [2021-12-06 23:08:03,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:08:03,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:03,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:08:03,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:08:03,158 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-06 23:08:03,158 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-06 23:08:03,158 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-06 23:08:03,158 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-06 23:08:03,159 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-06 23:08:03,159 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-06 23:08:03,159 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-06 23:08:03,159 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-06 23:08:03,159 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-06 23:08:03,159 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-06 23:08:03,159 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-06 23:08:03,160 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-06 23:08:03,160 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-06 23:08:03,160 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-06 23:08:03,160 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-06 23:08:03,160 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-06 23:08:03,160 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-06 23:08:03,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-06 23:08:03,160 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-06 23:08:03,161 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-06 23:08:03,161 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-06 23:08:03,161 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-06 23:08:03,161 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-06 23:08:03,161 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-06 23:08:03,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-06 23:08:03,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:08:03,161 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-06 23:08:03,162 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-06 23:08:03,162 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-06 23:08:03,162 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-06 23:08:03,162 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-06 23:08:03,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-06 23:08:03,162 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-06 23:08:03,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-06 23:08:03,163 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-06 23:08:03,163 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-06 23:08:03,163 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-06 23:08:03,163 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-06 23:08:03,163 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-06 23:08:03,163 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-06 23:08:03,163 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-06 23:08:03,163 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-06 23:08:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-06 23:08:03,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-06 23:08:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:08:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-06 23:08:03,164 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-06 23:08:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:08:03,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:08:03,301 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:08:03,303 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:08:03,725 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:08:03,735 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:08:03,735 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 23:08:03,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:08:03 BoogieIcfgContainer [2021-12-06 23:08:03,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:08:03,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:08:03,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:08:03,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:08:03,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:08:02" (1/3) ... [2021-12-06 23:08:03,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f6d7e8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:08:03, skipping insertion in model container [2021-12-06 23:08:03,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:08:02" (2/3) ... [2021-12-06 23:08:03,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f6d7e8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:08:03, skipping insertion in model container [2021-12-06 23:08:03,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:08:03" (3/3) ... [2021-12-06 23:08:03,745 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product28.cil.c [2021-12-06 23:08:03,749 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:08:03,749 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:08:03,790 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:08:03,795 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 23:08:03,795 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:08:03,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 327 states, 253 states have (on average 1.5217391304347827) internal successors, (385), 257 states have internal predecessors, (385), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-06 23:08:03,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 23:08:03,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:03,837 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] [2021-12-06 23:08:03,837 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:03,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:03,842 INFO L85 PathProgramCache]: Analyzing trace with hash 610945282, now seen corresponding path program 1 times [2021-12-06 23:08:03,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:03,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307963162] [2021-12-06 23:08:03,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:03,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:04,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:04,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:04,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:04,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 23:08:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:04,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 23:08:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:04,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:08:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:04,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 23:08:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:04,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 23:08:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:04,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 23:08:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:04,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 23:08:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:04,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 23:08:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:04,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 23:08:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:04,246 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 23:08:04,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:04,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307963162] [2021-12-06 23:08:04,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307963162] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:04,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968097259] [2021-12-06 23:08:04,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:04,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:04,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:04,249 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:04,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:08:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:04,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 23:08:04,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:04,565 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 23:08:04,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:08:04,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968097259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:04,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:08:04,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2021-12-06 23:08:04,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549536818] [2021-12-06 23:08:04,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:04,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 23:08:04,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:04,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 23:08:04,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:08:04,600 INFO L87 Difference]: Start difference. First operand has 327 states, 253 states have (on average 1.5217391304347827) internal successors, (385), 257 states have internal predecessors, (385), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:04,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:04,653 INFO L93 Difference]: Finished difference Result 505 states and 732 transitions. [2021-12-06 23:08:04,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 23:08:04,656 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2021-12-06 23:08:04,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:04,671 INFO L225 Difference]: With dead ends: 505 [2021-12-06 23:08:04,671 INFO L226 Difference]: Without dead ends: 320 [2021-12-06 23:08:04,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:08:04,680 INFO L933 BasicCegarLoop]: 481 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, 481 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 23:08:04,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:08:04,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-12-06 23:08:04,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2021-12-06 23:08:04,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 247 states have (on average 1.51417004048583) internal successors, (374), 250 states have internal predecessors, (374), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-06 23:08:04,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 473 transitions. [2021-12-06 23:08:04,745 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 473 transitions. Word has length 98 [2021-12-06 23:08:04,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:04,747 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 473 transitions. [2021-12-06 23:08:04,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:04,748 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 473 transitions. [2021-12-06 23:08:04,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 23:08:04,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:04,756 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] [2021-12-06 23:08:04,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:08:04,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-06 23:08:04,957 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:04,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:04,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2132313920, now seen corresponding path program 1 times [2021-12-06 23:08:04,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:04,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788545514] [2021-12-06 23:08:04,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:04,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 23:08:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 23:08:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:08:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 23:08:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 23:08:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 23:08:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 23:08:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 23:08:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 23:08:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,166 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 23:08:05,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:05,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788545514] [2021-12-06 23:08:05,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788545514] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:05,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882872567] [2021-12-06 23:08:05,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:05,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:05,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:05,168 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:05,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:08:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:08:05,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:05,415 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 23:08:05,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:08:05,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882872567] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:05,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:08:05,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-06 23:08:05,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922867163] [2021-12-06 23:08:05,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:05,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:08:05,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:05,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:08:05,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:08:05,418 INFO L87 Difference]: Start difference. First operand 320 states and 473 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:05,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:05,448 INFO L93 Difference]: Finished difference Result 495 states and 713 transitions. [2021-12-06 23:08:05,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:08:05,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2021-12-06 23:08:05,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:05,452 INFO L225 Difference]: With dead ends: 495 [2021-12-06 23:08:05,452 INFO L226 Difference]: Without dead ends: 323 [2021-12-06 23:08:05,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 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 23:08:05,454 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 1 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 940 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 23:08:05,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 940 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:08:05,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-12-06 23:08:05,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 322. [2021-12-06 23:08:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 249 states have (on average 1.5100401606425702) internal successors, (376), 252 states have internal predecessors, (376), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-06 23:08:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 475 transitions. [2021-12-06 23:08:05,476 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 475 transitions. Word has length 99 [2021-12-06 23:08:05,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:05,477 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 475 transitions. [2021-12-06 23:08:05,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:05,477 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 475 transitions. [2021-12-06 23:08:05,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-06 23:08:05,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:05,479 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] [2021-12-06 23:08:05,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 23:08:05,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:05,681 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:05,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:05,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2004971831, now seen corresponding path program 1 times [2021-12-06 23:08:05,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:05,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622027623] [2021-12-06 23:08:05,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:05,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 23:08:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 23:08:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:08:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 23:08:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 23:08:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 23:08:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 23:08:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 23:08:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 23:08:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:05,913 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 23:08:05,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:05,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622027623] [2021-12-06 23:08:05,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622027623] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:05,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482589523] [2021-12-06 23:08:05,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:05,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:05,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:05,915 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:05,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 23:08:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:06,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:08:06,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:06,143 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 23:08:06,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:08:06,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482589523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:06,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:08:06,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-06 23:08:06,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710348509] [2021-12-06 23:08:06,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:06,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:08:06,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:06,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:08:06,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:08:06,145 INFO L87 Difference]: Start difference. First operand 322 states and 475 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:06,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:06,166 INFO L93 Difference]: Finished difference Result 669 states and 1001 transitions. [2021-12-06 23:08:06,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:08:06,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2021-12-06 23:08:06,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:06,169 INFO L225 Difference]: With dead ends: 669 [2021-12-06 23:08:06,169 INFO L226 Difference]: Without dead ends: 374 [2021-12-06 23:08:06,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 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 23:08:06,171 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 99 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 916 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 23:08:06,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 916 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:08:06,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-12-06 23:08:06,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 366. [2021-12-06 23:08:06,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 282 states have (on average 1.524822695035461) internal successors, (430), 285 states have internal predecessors, (430), 61 states have call successors, (61), 22 states have call predecessors, (61), 22 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-12-06 23:08:06,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 551 transitions. [2021-12-06 23:08:06,190 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 551 transitions. Word has length 105 [2021-12-06 23:08:06,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:06,190 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 551 transitions. [2021-12-06 23:08:06,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:06,190 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 551 transitions. [2021-12-06 23:08:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 23:08:06,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:06,192 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] [2021-12-06 23:08:06,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 23:08:06,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:06,394 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:06,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:06,396 INFO L85 PathProgramCache]: Analyzing trace with hash -949933875, now seen corresponding path program 1 times [2021-12-06 23:08:06,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:06,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862767152] [2021-12-06 23:08:06,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:06,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:06,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:06,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:06,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:06,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 23:08:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:06,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 23:08:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:06,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 23:08:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:06,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 23:08:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:06,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 23:08:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:06,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 23:08:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:06,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 23:08:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:06,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 23:08:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:06,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 23:08:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:06,617 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 23:08:06,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:06,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862767152] [2021-12-06 23:08:06,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862767152] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:06,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972393221] [2021-12-06 23:08:06,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:06,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:06,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:06,619 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:06,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 23:08:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:06,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:08:06,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:06,919 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 23:08:06,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:08:06,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972393221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:06,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:08:06,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-12-06 23:08:06,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995930770] [2021-12-06 23:08:06,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:06,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:08:06,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:06,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:08:06,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:08:06,922 INFO L87 Difference]: Start difference. First operand 366 states and 551 transitions. Second operand has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 23:08:06,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:06,979 INFO L93 Difference]: Finished difference Result 723 states and 1092 transitions. [2021-12-06 23:08:06,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:08:06,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 106 [2021-12-06 23:08:06,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:06,983 INFO L225 Difference]: With dead ends: 723 [2021-12-06 23:08:06,983 INFO L226 Difference]: Without dead ends: 368 [2021-12-06 23:08:06,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:08:06,986 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 117 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1720 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 23:08:06,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1720 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:08:06,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-12-06 23:08:07,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2021-12-06 23:08:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 283 states have (on average 1.5229681978798586) internal successors, (431), 287 states have internal predecessors, (431), 61 states have call successors, (61), 22 states have call predecessors, (61), 23 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2021-12-06 23:08:07,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 554 transitions. [2021-12-06 23:08:07,009 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 554 transitions. Word has length 106 [2021-12-06 23:08:07,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:07,009 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 554 transitions. [2021-12-06 23:08:07,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 23:08:07,010 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 554 transitions. [2021-12-06 23:08:07,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 23:08:07,012 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:07,012 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] [2021-12-06 23:08:07,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 23:08:07,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:07,214 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:07,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:07,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1105408777, now seen corresponding path program 1 times [2021-12-06 23:08:07,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:07,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192979270] [2021-12-06 23:08:07,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:07,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:07,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:07,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:07,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:07,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:08:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:07,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 23:08:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:07,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 23:08:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:07,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 23:08:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:07,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 23:08:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:07,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 23:08:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:07,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 23:08:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:07,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 23:08:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 23:08:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:07,466 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 23:08:07,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:07,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192979270] [2021-12-06 23:08:07,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192979270] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:07,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599949490] [2021-12-06 23:08:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:07,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:07,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:07,467 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:07,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 23:08:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:07,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:08:07,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:07,741 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 23:08:07,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:08:07,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599949490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:07,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:08:07,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-12-06 23:08:07,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671954654] [2021-12-06 23:08:07,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:07,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:08:07,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:07,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:08:07,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:08:07,743 INFO L87 Difference]: Start difference. First operand 368 states and 554 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 23:08:07,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:07,791 INFO L93 Difference]: Finished difference Result 725 states and 1097 transitions. [2021-12-06 23:08:07,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:08:07,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 107 [2021-12-06 23:08:07,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:07,794 INFO L225 Difference]: With dead ends: 725 [2021-12-06 23:08:07,794 INFO L226 Difference]: Without dead ends: 370 [2021-12-06 23:08:07,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:08:07,796 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 116 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1709 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 23:08:07,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1709 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:08:07,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-12-06 23:08:07,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2021-12-06 23:08:07,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 284 states have (on average 1.5211267605633803) internal successors, (432), 289 states have internal predecessors, (432), 61 states have call successors, (61), 22 states have call predecessors, (61), 24 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2021-12-06 23:08:07,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 560 transitions. [2021-12-06 23:08:07,811 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 560 transitions. Word has length 107 [2021-12-06 23:08:07,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:07,812 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 560 transitions. [2021-12-06 23:08:07,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 23:08:07,812 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 560 transitions. [2021-12-06 23:08:07,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 23:08:07,814 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:07,814 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] [2021-12-06 23:08:07,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 23:08:08,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:08,014 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:08,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:08,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1048003723, now seen corresponding path program 1 times [2021-12-06 23:08:08,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:08,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778474337] [2021-12-06 23:08:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:08,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:08,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:08,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:08,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:08,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:08:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:08,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:08:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:08,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 23:08:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:08,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 23:08:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:08,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 23:08:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:08,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 23:08:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:08,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:08:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:08,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 23:08:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:08,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 23:08:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:08,097 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 23:08:08,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:08,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778474337] [2021-12-06 23:08:08,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778474337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:08,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:08,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 23:08:08,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910837953] [2021-12-06 23:08:08,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:08,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:08:08,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:08,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:08:08,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:08:08,098 INFO L87 Difference]: Start difference. First operand 370 states and 560 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 23:08:08,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:08,961 INFO L93 Difference]: Finished difference Result 788 states and 1199 transitions. [2021-12-06 23:08:08,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:08:08,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2021-12-06 23:08:08,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:08,966 INFO L225 Difference]: With dead ends: 788 [2021-12-06 23:08:08,966 INFO L226 Difference]: Without dead ends: 441 [2021-12-06 23:08:08,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:08:08,968 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 871 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:08,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [888 Valid, 1356 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 23:08:08,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-12-06 23:08:08,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 370. [2021-12-06 23:08:08,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 284 states have (on average 1.5211267605633803) internal successors, (432), 289 states have internal predecessors, (432), 61 states have call successors, (61), 22 states have call predecessors, (61), 24 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2021-12-06 23:08:09,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 559 transitions. [2021-12-06 23:08:09,000 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 559 transitions. Word has length 108 [2021-12-06 23:08:09,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:09,001 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 559 transitions. [2021-12-06 23:08:09,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 23:08:09,001 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 559 transitions. [2021-12-06 23:08:09,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-06 23:08:09,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:09,004 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] [2021-12-06 23:08:09,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 23:08:09,004 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:09,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:09,005 INFO L85 PathProgramCache]: Analyzing trace with hash -887305513, now seen corresponding path program 2 times [2021-12-06 23:08:09,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:09,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277126098] [2021-12-06 23:08:09,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:09,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:09,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:09,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:09,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:09,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:08:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:09,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:08:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:09,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 23:08:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:09,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 23:08:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:09,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 23:08:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:09,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:08:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:09,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 23:08:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:09,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 23:08:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:09,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 23:08:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:09,103 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 23:08:09,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:09,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277126098] [2021-12-06 23:08:09,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277126098] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:09,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:09,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 23:08:09,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113050801] [2021-12-06 23:08:09,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:09,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:08:09,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:09,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:08:09,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:08:09,106 INFO L87 Difference]: Start difference. First operand 370 states and 559 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 23:08:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:09,946 INFO L93 Difference]: Finished difference Result 790 states and 1202 transitions. [2021-12-06 23:08:09,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:08:09,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2021-12-06 23:08:09,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:09,950 INFO L225 Difference]: With dead ends: 790 [2021-12-06 23:08:09,950 INFO L226 Difference]: Without dead ends: 443 [2021-12-06 23:08:09,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:08:09,952 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 867 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:09,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 1357 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 23:08:09,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-12-06 23:08:09,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 372. [2021-12-06 23:08:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 285 states have (on average 1.5192982456140351) internal successors, (433), 291 states have internal predecessors, (433), 61 states have call successors, (61), 22 states have call predecessors, (61), 25 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2021-12-06 23:08:09,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 562 transitions. [2021-12-06 23:08:09,975 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 562 transitions. Word has length 109 [2021-12-06 23:08:09,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:09,976 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 562 transitions. [2021-12-06 23:08:09,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 23:08:09,976 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 562 transitions. [2021-12-06 23:08:09,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 23:08:09,978 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:09,978 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] [2021-12-06 23:08:09,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 23:08:09,978 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:09,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:09,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1465707430, now seen corresponding path program 1 times [2021-12-06 23:08:09,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:09,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559174227] [2021-12-06 23:08:09,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:09,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:10,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:10,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:10,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:10,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:08:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:10,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:08:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:10,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:08:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:10,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 23:08:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:10,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 23:08:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:10,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 23:08:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:10,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 23:08:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:10,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 23:08:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:10,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 23:08:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:10,085 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 23:08:10,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:10,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559174227] [2021-12-06 23:08:10,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559174227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:10,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:10,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 23:08:10,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600546113] [2021-12-06 23:08:10,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:10,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:08:10,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:10,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:08:10,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:08:10,088 INFO L87 Difference]: Start difference. First operand 372 states and 562 transitions. Second operand has 11 states, 10 states have (on average 7.6) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 23:08:11,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:11,191 INFO L93 Difference]: Finished difference Result 788 states and 1197 transitions. [2021-12-06 23:08:11,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:08:11,191 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.6) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 110 [2021-12-06 23:08:11,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:11,194 INFO L225 Difference]: With dead ends: 788 [2021-12-06 23:08:11,194 INFO L226 Difference]: Without dead ends: 443 [2021-12-06 23:08:11,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-06 23:08:11,196 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 973 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 2561 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:11,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [973 Valid, 1784 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2561 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 23:08:11,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-12-06 23:08:11,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 372. [2021-12-06 23:08:11,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 285 states have (on average 1.5192982456140351) internal successors, (433), 291 states have internal predecessors, (433), 61 states have call successors, (61), 22 states have call predecessors, (61), 25 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2021-12-06 23:08:11,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 561 transitions. [2021-12-06 23:08:11,215 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 561 transitions. Word has length 110 [2021-12-06 23:08:11,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:11,215 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 561 transitions. [2021-12-06 23:08:11,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.6) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 23:08:11,216 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 561 transitions. [2021-12-06 23:08:11,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 23:08:11,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:11,217 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] [2021-12-06 23:08:11,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 23:08:11,217 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:11,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:11,218 INFO L85 PathProgramCache]: Analyzing trace with hash -499579042, now seen corresponding path program 2 times [2021-12-06 23:08:11,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:11,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271237725] [2021-12-06 23:08:11,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:11,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:11,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:11,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:11,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:11,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:08:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:11,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:08:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:11,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:08:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:11,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 23:08:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:11,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 23:08:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:11,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 23:08:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:11,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 23:08:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:11,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 23:08:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:11,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 23:08:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:11,317 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 23:08:11,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:11,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271237725] [2021-12-06 23:08:11,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271237725] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:11,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:11,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 23:08:11,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3282362] [2021-12-06 23:08:11,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:11,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:08:11,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:11,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:08:11,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:08:11,319 INFO L87 Difference]: Start difference. First operand 372 states and 561 transitions. Second operand has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 23:08:12,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:12,252 INFO L93 Difference]: Finished difference Result 790 states and 1203 transitions. [2021-12-06 23:08:12,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:08:12,252 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 111 [2021-12-06 23:08:12,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:12,255 INFO L225 Difference]: With dead ends: 790 [2021-12-06 23:08:12,255 INFO L226 Difference]: Without dead ends: 445 [2021-12-06 23:08:12,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-06 23:08:12,258 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 969 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:12,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 1785 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 23:08:12,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-12-06 23:08:12,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 374. [2021-12-06 23:08:12,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 286 states have (on average 1.5174825174825175) internal successors, (434), 293 states have internal predecessors, (434), 61 states have call successors, (61), 22 states have call predecessors, (61), 26 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2021-12-06 23:08:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 567 transitions. [2021-12-06 23:08:12,286 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 567 transitions. Word has length 111 [2021-12-06 23:08:12,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:12,286 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 567 transitions. [2021-12-06 23:08:12,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 23:08:12,287 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 567 transitions. [2021-12-06 23:08:12,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 23:08:12,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:12,289 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] [2021-12-06 23:08:12,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 23:08:12,290 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:12,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:12,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1056550783, now seen corresponding path program 1 times [2021-12-06 23:08:12,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:12,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183931741] [2021-12-06 23:08:12,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:12,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:12,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:12,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:12,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:12,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:08:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:12,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:08:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:12,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:08:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:12,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 23:08:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:12,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 23:08:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:12,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 23:08:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:12,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 23:08:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 23:08:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:12,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 23:08:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:12,382 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 23:08:12,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:12,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183931741] [2021-12-06 23:08:12,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183931741] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:12,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207019994] [2021-12-06 23:08:12,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:12,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:12,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:12,383 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:12,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 23:08:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:12,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:08:12,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:12,609 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 23:08:12,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:12,714 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 23:08:12,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207019994] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:12,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:08:12,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2021-12-06 23:08:12,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012509237] [2021-12-06 23:08:12,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:12,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:08:12,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:12,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:08:12,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:08:12,716 INFO L87 Difference]: Start difference. First operand 374 states and 567 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 23:08:13,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:13,465 INFO L93 Difference]: Finished difference Result 944 states and 1501 transitions. [2021-12-06 23:08:13,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:08:13,465 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 112 [2021-12-06 23:08:13,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:13,470 INFO L225 Difference]: With dead ends: 944 [2021-12-06 23:08:13,470 INFO L226 Difference]: Without dead ends: 772 [2021-12-06 23:08:13,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:08:13,472 INFO L933 BasicCegarLoop]: 596 mSDtfsCounter, 1149 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:13,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1194 Valid, 1672 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 23:08:13,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-12-06 23:08:13,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 677. [2021-12-06 23:08:13,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 525 states have (on average 1.5847619047619048) internal successors, (832), 532 states have internal predecessors, (832), 125 states have call successors, (125), 22 states have call predecessors, (125), 26 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2021-12-06 23:08:13,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1103 transitions. [2021-12-06 23:08:13,506 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1103 transitions. Word has length 112 [2021-12-06 23:08:13,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:13,506 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 1103 transitions. [2021-12-06 23:08:13,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 23:08:13,507 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1103 transitions. [2021-12-06 23:08:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 23:08:13,510 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:13,510 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] [2021-12-06 23:08:13,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 23:08:13,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 23:08:13,711 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:13,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:13,712 INFO L85 PathProgramCache]: Analyzing trace with hash 88149732, now seen corresponding path program 1 times [2021-12-06 23:08:13,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:13,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812316347] [2021-12-06 23:08:13,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:13,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:13,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:13,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:13,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:13,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:08:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:13,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:08:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:13,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:08:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:13,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 23:08:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:13,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 23:08:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:13,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 23:08:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:13,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 23:08:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:13,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 23:08:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:13,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 23:08:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:13,830 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 23:08:13,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:13,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812316347] [2021-12-06 23:08:13,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812316347] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:13,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:13,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:08:13,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163860171] [2021-12-06 23:08:13,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:13,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:08:13,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:13,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:08:13,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:08:13,832 INFO L87 Difference]: Start difference. First operand 677 states and 1103 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:14,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:14,410 INFO L93 Difference]: Finished difference Result 1665 states and 2780 transitions. [2021-12-06 23:08:14,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:08:14,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2021-12-06 23:08:14,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:14,416 INFO L225 Difference]: With dead ends: 1665 [2021-12-06 23:08:14,417 INFO L226 Difference]: Without dead ends: 1056 [2021-12-06 23:08:14,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:08:14,419 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 860 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:14,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [875 Valid, 1120 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 23:08:14,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2021-12-06 23:08:14,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 977. [2021-12-06 23:08:14,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 761 states have (on average 1.5992115637319317) internal successors, (1217), 768 states have internal predecessors, (1217), 189 states have call successors, (189), 22 states have call predecessors, (189), 26 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2021-12-06 23:08:14,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1626 transitions. [2021-12-06 23:08:14,477 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1626 transitions. Word has length 118 [2021-12-06 23:08:14,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:14,477 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1626 transitions. [2021-12-06 23:08:14,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:14,477 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1626 transitions. [2021-12-06 23:08:14,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-06 23:08:14,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:14,482 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] [2021-12-06 23:08:14,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 23:08:14,482 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:14,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:14,482 INFO L85 PathProgramCache]: Analyzing trace with hash 418572611, now seen corresponding path program 1 times [2021-12-06 23:08:14,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:14,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146743615] [2021-12-06 23:08:14,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:14,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:14,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:14,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:14,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:08:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:14,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:08:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:14,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:08:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:14,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 23:08:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:14,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 23:08:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:14,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:08:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:14,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 23:08:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:14,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 23:08:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:14,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 23:08:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:14,549 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 23:08:14,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:14,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146743615] [2021-12-06 23:08:14,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146743615] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:14,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:14,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:08:14,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864416505] [2021-12-06 23:08:14,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:14,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:08:14,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:14,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:08:14,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:08:14,551 INFO L87 Difference]: Start difference. First operand 977 states and 1626 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:15,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:15,148 INFO L93 Difference]: Finished difference Result 2380 states and 4025 transitions. [2021-12-06 23:08:15,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:08:15,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2021-12-06 23:08:15,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:15,161 INFO L225 Difference]: With dead ends: 2380 [2021-12-06 23:08:15,162 INFO L226 Difference]: Without dead ends: 1524 [2021-12-06 23:08:15,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:08:15,166 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 858 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:15,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 1102 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 23:08:15,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-12-06 23:08:15,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1445. [2021-12-06 23:08:15,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1134 states have (on average 1.6084656084656084) internal successors, (1824), 1141 states have internal predecessors, (1824), 284 states have call successors, (284), 22 states have call predecessors, (284), 26 states have return successors, (315), 283 states have call predecessors, (315), 283 states have call successors, (315) [2021-12-06 23:08:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2423 transitions. [2021-12-06 23:08:15,279 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2423 transitions. Word has length 119 [2021-12-06 23:08:15,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:15,279 INFO L470 AbstractCegarLoop]: Abstraction has 1445 states and 2423 transitions. [2021-12-06 23:08:15,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:15,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2423 transitions. [2021-12-06 23:08:15,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-06 23:08:15,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:15,290 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] [2021-12-06 23:08:15,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 23:08:15,290 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:15,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:15,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2089768670, now seen corresponding path program 1 times [2021-12-06 23:08:15,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:15,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861702623] [2021-12-06 23:08:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:15,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:15,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:15,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:15,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:15,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:08:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:15,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:08:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:15,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:08:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:15,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 23:08:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:15,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 23:08:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 23:08:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:15,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 23:08:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:15,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 23:08:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:15,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 23:08:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:15,364 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 23:08:15,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:15,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861702623] [2021-12-06 23:08:15,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861702623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:15,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:15,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:08:15,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116293686] [2021-12-06 23:08:15,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:15,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:08:15,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:15,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:08:15,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:08:15,366 INFO L87 Difference]: Start difference. First operand 1445 states and 2423 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:15,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:15,964 INFO L93 Difference]: Finished difference Result 3427 states and 5866 transitions. [2021-12-06 23:08:15,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:08:15,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2021-12-06 23:08:15,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:15,976 INFO L225 Difference]: With dead ends: 3427 [2021-12-06 23:08:15,976 INFO L226 Difference]: Without dead ends: 2228 [2021-12-06 23:08:15,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:08:15,980 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 856 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:15,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [871 Valid, 1102 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 23:08:15,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-12-06 23:08:16,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2149. [2021-12-06 23:08:16,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1715 states have (on average 1.6157434402332362) internal successors, (2771), 1722 states have internal predecessors, (2771), 407 states have call successors, (407), 22 states have call predecessors, (407), 26 states have return successors, (454), 406 states have call predecessors, (454), 406 states have call successors, (454) [2021-12-06 23:08:16,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3632 transitions. [2021-12-06 23:08:16,112 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3632 transitions. Word has length 120 [2021-12-06 23:08:16,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:16,113 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 3632 transitions. [2021-12-06 23:08:16,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:16,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3632 transitions. [2021-12-06 23:08:16,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-06 23:08:16,124 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:16,124 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 23:08:16,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 23:08:16,124 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:16,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:16,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1022927198, now seen corresponding path program 1 times [2021-12-06 23:08:16,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:16,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336187323] [2021-12-06 23:08:16,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:16,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:16,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:16,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:16,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:16,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:08:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:16,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:08:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:16,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:08:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:16,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 23:08:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:16,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 23:08:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:16,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 23:08:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:16,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 23:08:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:16,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 23:08:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:16,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 23:08:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:16,199 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 23:08:16,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:16,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336187323] [2021-12-06 23:08:16,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336187323] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:16,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:16,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:08:16,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506082170] [2021-12-06 23:08:16,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:16,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:08:16,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:16,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:08:16,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:08:16,201 INFO L87 Difference]: Start difference. First operand 2149 states and 3632 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:16,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:16,827 INFO L93 Difference]: Finished difference Result 5046 states and 8720 transitions. [2021-12-06 23:08:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:08:16,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2021-12-06 23:08:16,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:16,844 INFO L225 Difference]: With dead ends: 5046 [2021-12-06 23:08:16,845 INFO L226 Difference]: Without dead ends: 3347 [2021-12-06 23:08:16,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:08:16,850 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 854 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:16,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 1102 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 23:08:16,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2021-12-06 23:08:17,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3268. [2021-12-06 23:08:17,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3268 states, 2655 states have (on average 1.6203389830508474) internal successors, (4302), 2662 states have internal predecessors, (4302), 586 states have call successors, (586), 22 states have call predecessors, (586), 26 states have return successors, (659), 585 states have call predecessors, (659), 585 states have call successors, (659) [2021-12-06 23:08:17,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3268 states to 3268 states and 5547 transitions. [2021-12-06 23:08:17,017 INFO L78 Accepts]: Start accepts. Automaton has 3268 states and 5547 transitions. Word has length 121 [2021-12-06 23:08:17,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:17,018 INFO L470 AbstractCegarLoop]: Abstraction has 3268 states and 5547 transitions. [2021-12-06 23:08:17,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:17,018 INFO L276 IsEmpty]: Start isEmpty. Operand 3268 states and 5547 transitions. [2021-12-06 23:08:17,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-06 23:08:17,026 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:17,026 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 23:08:17,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 23:08:17,027 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:17,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:17,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1502297978, now seen corresponding path program 1 times [2021-12-06 23:08:17,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:17,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536080603] [2021-12-06 23:08:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:17,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:17,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:17,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:17,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:17,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:08:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:17,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:08:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:17,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:08:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:17,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 23:08:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:17,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:08:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:17,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 23:08:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:17,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 23:08:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:17,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 23:08:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:17,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:08:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:17,095 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 23:08:17,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:17,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536080603] [2021-12-06 23:08:17,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536080603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:17,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:17,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:08:17,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366710451] [2021-12-06 23:08:17,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:17,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:08:17,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:17,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:08:17,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:08:17,096 INFO L87 Difference]: Start difference. First operand 3268 states and 5547 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:17,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:17,799 INFO L93 Difference]: Finished difference Result 7964 states and 13819 transitions. [2021-12-06 23:08:17,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:08:17,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2021-12-06 23:08:17,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:17,827 INFO L225 Difference]: With dead ends: 7964 [2021-12-06 23:08:17,827 INFO L226 Difference]: Without dead ends: 5378 [2021-12-06 23:08:17,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:08:17,834 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 852 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:17,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 1158 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 23:08:17,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2021-12-06 23:08:18,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 5299. [2021-12-06 23:08:18,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5299 states, 4310 states have (on average 1.6134570765661254) internal successors, (6954), 4317 states have internal predecessors, (6954), 962 states have call successors, (962), 22 states have call predecessors, (962), 26 states have return successors, (1079), 961 states have call predecessors, (1079), 961 states have call successors, (1079) [2021-12-06 23:08:18,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5299 states to 5299 states and 8995 transitions. [2021-12-06 23:08:18,087 INFO L78 Accepts]: Start accepts. Automaton has 5299 states and 8995 transitions. Word has length 122 [2021-12-06 23:08:18,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:18,087 INFO L470 AbstractCegarLoop]: Abstraction has 5299 states and 8995 transitions. [2021-12-06 23:08:18,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:18,087 INFO L276 IsEmpty]: Start isEmpty. Operand 5299 states and 8995 transitions. [2021-12-06 23:08:18,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:08:18,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:18,100 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 23:08:18,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 23:08:18,100 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:18,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:18,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1397339966, now seen corresponding path program 1 times [2021-12-06 23:08:18,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:18,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431958245] [2021-12-06 23:08:18,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:18,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:18,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:18,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:18,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:18,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:08:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:18,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:08:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:18,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:08:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:18,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 23:08:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:18,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 23:08:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:18,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 23:08:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:18,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 23:08:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:18,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 23:08:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:18,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 23:08:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:18,164 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 23:08:18,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:18,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431958245] [2021-12-06 23:08:18,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431958245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:18,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:18,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:08:18,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602939104] [2021-12-06 23:08:18,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:18,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:08:18,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:18,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:08:18,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:08:18,166 INFO L87 Difference]: Start difference. First operand 5299 states and 8995 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:19,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:19,016 INFO L93 Difference]: Finished difference Result 13106 states and 22728 transitions. [2021-12-06 23:08:19,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:08:19,017 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2021-12-06 23:08:19,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:19,058 INFO L225 Difference]: With dead ends: 13106 [2021-12-06 23:08:19,058 INFO L226 Difference]: Without dead ends: 8866 [2021-12-06 23:08:19,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:08:19,069 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 850 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:19,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 1105 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 23:08:19,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8866 states. [2021-12-06 23:08:19,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8866 to 8787. [2021-12-06 23:08:19,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8787 states, 7192 states have (on average 1.6112347052280311) internal successors, (11588), 7199 states have internal predecessors, (11588), 1568 states have call successors, (1568), 22 states have call predecessors, (1568), 26 states have return successors, (1763), 1567 states have call predecessors, (1763), 1567 states have call successors, (1763) [2021-12-06 23:08:19,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8787 states to 8787 states and 14919 transitions. [2021-12-06 23:08:19,445 INFO L78 Accepts]: Start accepts. Automaton has 8787 states and 14919 transitions. Word has length 123 [2021-12-06 23:08:19,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:19,445 INFO L470 AbstractCegarLoop]: Abstraction has 8787 states and 14919 transitions. [2021-12-06 23:08:19,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:19,446 INFO L276 IsEmpty]: Start isEmpty. Operand 8787 states and 14919 transitions. [2021-12-06 23:08:19,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 23:08:19,462 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:19,462 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 23:08:19,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 23:08:19,462 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:19,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:19,462 INFO L85 PathProgramCache]: Analyzing trace with hash 213501156, now seen corresponding path program 1 times [2021-12-06 23:08:19,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:19,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093449603] [2021-12-06 23:08:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:19,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:19,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:19,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:19,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:19,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:08:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:19,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:08:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:19,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:08:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:19,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 23:08:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:19,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 23:08:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:19,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 23:08:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:19,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 23:08:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:19,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:08:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:19,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 23:08:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:19,548 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 23:08:19,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:19,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093449603] [2021-12-06 23:08:19,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093449603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:19,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:19,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:08:19,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685615806] [2021-12-06 23:08:19,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:19,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:08:19,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:19,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:08:19,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:08:19,550 INFO L87 Difference]: Start difference. First operand 8787 states and 14919 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:20,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:20,582 INFO L93 Difference]: Finished difference Result 22765 states and 39434 transitions. [2021-12-06 23:08:20,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:08:20,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 124 [2021-12-06 23:08:20,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:20,635 INFO L225 Difference]: With dead ends: 22765 [2021-12-06 23:08:20,635 INFO L226 Difference]: Without dead ends: 15459 [2021-12-06 23:08:20,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:08:20,652 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 848 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:20,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 1156 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 23:08:20,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15459 states. [2021-12-06 23:08:21,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15459 to 15380. [2021-12-06 23:08:21,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15380 states, 12582 states have (on average 1.6018121125417262) internal successors, (20154), 12589 states have internal predecessors, (20154), 2771 states have call successors, (2771), 22 states have call predecessors, (2771), 26 states have return successors, (3110), 2770 states have call predecessors, (3110), 2770 states have call successors, (3110) [2021-12-06 23:08:21,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15380 states to 15380 states and 26035 transitions. [2021-12-06 23:08:21,299 INFO L78 Accepts]: Start accepts. Automaton has 15380 states and 26035 transitions. Word has length 124 [2021-12-06 23:08:21,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:21,299 INFO L470 AbstractCegarLoop]: Abstraction has 15380 states and 26035 transitions. [2021-12-06 23:08:21,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:21,300 INFO L276 IsEmpty]: Start isEmpty. Operand 15380 states and 26035 transitions. [2021-12-06 23:08:21,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-06 23:08:21,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:21,319 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 23:08:21,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 23:08:21,320 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:21,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:21,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1851360003, now seen corresponding path program 1 times [2021-12-06 23:08:21,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:21,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319794836] [2021-12-06 23:08:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:21,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:21,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:21,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:21,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:21,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:08:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:21,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:08:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:21,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:08:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:21,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 23:08:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:21,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 23:08:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:21,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 23:08:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:21,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 23:08:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:21,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 23:08:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:21,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 23:08:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:21,391 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 23:08:21,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:21,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319794836] [2021-12-06 23:08:21,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319794836] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:21,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:21,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:08:21,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955084071] [2021-12-06 23:08:21,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:21,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:08:21,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:21,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:08:21,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:08:21,393 INFO L87 Difference]: Start difference. First operand 15380 states and 26035 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:22,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:22,898 INFO L93 Difference]: Finished difference Result 40721 states and 70417 transitions. [2021-12-06 23:08:22,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:08:22,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 125 [2021-12-06 23:08:22,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:22,976 INFO L225 Difference]: With dead ends: 40721 [2021-12-06 23:08:22,977 INFO L226 Difference]: Without dead ends: 27429 [2021-12-06 23:08:23,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:08:23,002 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 846 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:23,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 1101 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 23:08:23,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27429 states. [2021-12-06 23:08:24,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27429 to 27350. [2021-12-06 23:08:24,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27350 states, 22513 states have (on average 1.5973881757206947) internal successors, (35962), 22520 states have internal predecessors, (35962), 4810 states have call successors, (4810), 22 states have call predecessors, (4810), 26 states have return successors, (5423), 4809 states have call predecessors, (5423), 4809 states have call successors, (5423) [2021-12-06 23:08:24,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27350 states to 27350 states and 46195 transitions. [2021-12-06 23:08:24,167 INFO L78 Accepts]: Start accepts. Automaton has 27350 states and 46195 transitions. Word has length 125 [2021-12-06 23:08:24,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:24,168 INFO L470 AbstractCegarLoop]: Abstraction has 27350 states and 46195 transitions. [2021-12-06 23:08:24,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:24,168 INFO L276 IsEmpty]: Start isEmpty. Operand 27350 states and 46195 transitions. [2021-12-06 23:08:24,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-06 23:08:24,193 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:24,193 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 23:08:24,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 23:08:24,193 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:24,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:24,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1715555102, now seen corresponding path program 1 times [2021-12-06 23:08:24,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:24,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515677358] [2021-12-06 23:08:24,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:24,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:24,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:24,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:24,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:24,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:08:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:24,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:08:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:24,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:08:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:24,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 23:08:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:24,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 23:08:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:24,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 23:08:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:24,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 23:08:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:24,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 23:08:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:24,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 23:08:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:24,270 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 23:08:24,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:24,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515677358] [2021-12-06 23:08:24,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515677358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:24,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:24,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:08:24,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908005178] [2021-12-06 23:08:24,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:24,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:08:24,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:24,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:08:24,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:08:24,272 INFO L87 Difference]: Start difference. First operand 27350 states and 46195 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:26,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:26,489 INFO L93 Difference]: Finished difference Result 74508 states and 128016 transitions. [2021-12-06 23:08:26,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:08:26,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 126 [2021-12-06 23:08:26,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:26,627 INFO L225 Difference]: With dead ends: 74508 [2021-12-06 23:08:26,627 INFO L226 Difference]: Without dead ends: 49978 [2021-12-06 23:08:26,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:08:26,674 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 844 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:26,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [859 Valid, 1105 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 23:08:26,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49978 states. [2021-12-06 23:08:28,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49978 to 49899. [2021-12-06 23:08:28,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49899 states, 41347 states have (on average 1.5914818487435607) internal successors, (65803), 41354 states have internal predecessors, (65803), 8525 states have call successors, (8525), 22 states have call predecessors, (8525), 26 states have return successors, (9670), 8524 states have call predecessors, (9670), 8524 states have call successors, (9670) [2021-12-06 23:08:29,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49899 states to 49899 states and 83998 transitions. [2021-12-06 23:08:29,050 INFO L78 Accepts]: Start accepts. Automaton has 49899 states and 83998 transitions. Word has length 126 [2021-12-06 23:08:29,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:29,051 INFO L470 AbstractCegarLoop]: Abstraction has 49899 states and 83998 transitions. [2021-12-06 23:08:29,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:29,051 INFO L276 IsEmpty]: Start isEmpty. Operand 49899 states and 83998 transitions. [2021-12-06 23:08:29,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 23:08:29,071 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:29,071 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 23:08:29,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 23:08:29,071 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:29,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:29,072 INFO L85 PathProgramCache]: Analyzing trace with hash 425305917, now seen corresponding path program 1 times [2021-12-06 23:08:29,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:29,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879394719] [2021-12-06 23:08:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:29,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:29,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:29,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:29,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:29,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:08:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:29,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:08:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:29,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:08:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:29,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 23:08:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:29,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:08:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:29,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 23:08:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:29,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 23:08:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:29,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 23:08:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:29,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 23:08:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:29,136 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 23:08:29,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:29,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879394719] [2021-12-06 23:08:29,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879394719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:29,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:29,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:08:29,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861294953] [2021-12-06 23:08:29,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:29,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:08:29,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:29,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:08:29,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:08:29,138 INFO L87 Difference]: Start difference. First operand 49899 states and 83998 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:32,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:32,678 INFO L93 Difference]: Finished difference Result 92994 states and 160147 transitions. [2021-12-06 23:08:32,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:08:32,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 127 [2021-12-06 23:08:32,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:32,983 INFO L225 Difference]: With dead ends: 92994 [2021-12-06 23:08:32,983 INFO L226 Difference]: Without dead ends: 92822 [2021-12-06 23:08:33,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:08:33,020 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 842 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:33,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 1107 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 23:08:33,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92822 states. [2021-12-06 23:08:36,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92822 to 92743. [2021-12-06 23:08:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92743 states, 77392 states have (on average 1.5840009303287161) internal successors, (122589), 77399 states have internal predecessors, (122589), 15324 states have call successors, (15324), 22 states have call predecessors, (15324), 26 states have return successors, (17515), 15323 states have call predecessors, (17515), 15323 states have call successors, (17515) [2021-12-06 23:08:37,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92743 states to 92743 states and 155428 transitions. [2021-12-06 23:08:37,233 INFO L78 Accepts]: Start accepts. Automaton has 92743 states and 155428 transitions. Word has length 127 [2021-12-06 23:08:37,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:37,233 INFO L470 AbstractCegarLoop]: Abstraction has 92743 states and 155428 transitions. [2021-12-06 23:08:37,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:08:37,233 INFO L276 IsEmpty]: Start isEmpty. Operand 92743 states and 155428 transitions. [2021-12-06 23:08:37,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-06 23:08:37,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:37,257 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 23:08:37,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 23:08:37,258 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:37,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:37,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1225218141, now seen corresponding path program 1 times [2021-12-06 23:08:37,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:37,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315504365] [2021-12-06 23:08:37,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:37,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:37,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:37,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:37,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:37,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:08:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:37,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:08:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:37,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:08:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:37,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:08:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:37,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 23:08:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:37,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 23:08:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:37,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 23:08:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:37,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 23:08:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:37,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 23:08:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:37,388 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 23:08:37,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:37,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315504365] [2021-12-06 23:08:37,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315504365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:37,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:37,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-06 23:08:37,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757509899] [2021-12-06 23:08:37,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:37,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 23:08:37,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:37,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 23:08:37,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:08:37,390 INFO L87 Difference]: Start difference. First operand 92743 states and 155428 transitions. Second operand has 16 states, 15 states have (on average 5.933333333333334) internal successors, (89), 11 states have internal predecessors, (89), 6 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2021-12-06 23:08:46,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:46,439 INFO L93 Difference]: Finished difference Result 185252 states and 322366 transitions. [2021-12-06 23:08:46,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-06 23:08:46,440 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.933333333333334) internal successors, (89), 11 states have internal predecessors, (89), 6 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 128 [2021-12-06 23:08:46,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:47,015 INFO L225 Difference]: With dead ends: 185252 [2021-12-06 23:08:47,015 INFO L226 Difference]: Without dead ends: 185088 [2021-12-06 23:08:47,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=519, Invalid=1833, Unknown=0, NotChecked=0, Total=2352 [2021-12-06 23:08:47,075 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 3396 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 6824 mSolverCounterSat, 1456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3396 SdHoareTripleChecker+Valid, 3399 SdHoareTripleChecker+Invalid, 8280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1456 IncrementalHoareTripleChecker+Valid, 6824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:47,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3396 Valid, 3399 Invalid, 8280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1456 Valid, 6824 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 23:08:47,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185088 states. [2021-12-06 23:08:55,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185088 to 184738. [2021-12-06 23:08:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184738 states, 154229 states have (on average 1.5848900012319342) internal successors, (244436), 154133 states have internal predecessors, (244436), 30443 states have call successors, (30443), 59 states have call predecessors, (30443), 65 states have return successors, (38094), 30551 states have call predecessors, (38094), 30440 states have call successors, (38094) [2021-12-06 23:08:55,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184738 states to 184738 states and 312973 transitions. [2021-12-06 23:08:55,833 INFO L78 Accepts]: Start accepts. Automaton has 184738 states and 312973 transitions. Word has length 128 [2021-12-06 23:08:55,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:55,833 INFO L470 AbstractCegarLoop]: Abstraction has 184738 states and 312973 transitions. [2021-12-06 23:08:55,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.933333333333334) internal successors, (89), 11 states have internal predecessors, (89), 6 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2021-12-06 23:08:55,834 INFO L276 IsEmpty]: Start isEmpty. Operand 184738 states and 312973 transitions. [2021-12-06 23:08:55,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-06 23:08:55,883 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:55,883 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 23:08:55,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 23:08:55,884 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:55,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:55,884 INFO L85 PathProgramCache]: Analyzing trace with hash 119811374, now seen corresponding path program 1 times [2021-12-06 23:08:55,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:55,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053986494] [2021-12-06 23:08:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:55,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:55,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:08:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:55,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:08:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:55,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:08:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:55,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:08:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:55,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:08:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:55,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:08:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:55,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:08:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:55,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 23:08:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:55,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 23:08:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:55,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 23:08:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:56,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:08:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:56,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 23:08:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:56,005 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 23:08:56,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:56,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053986494] [2021-12-06 23:08:56,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053986494] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:56,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:56,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 23:08:56,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381440276] [2021-12-06 23:08:56,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:56,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 23:08:56,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:56,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 23:08:56,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:08:56,007 INFO L87 Difference]: Start difference. First operand 184738 states and 312973 transitions. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 8 states have internal predecessors, (90), 5 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-06 23:09:03,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:09:03,787 INFO L93 Difference]: Finished difference Result 185830 states and 321072 transitions. [2021-12-06 23:09:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 23:09:03,788 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 8 states have internal predecessors, (90), 5 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 129 [2021-12-06 23:09:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:09:04,556 INFO L225 Difference]: With dead ends: 185830 [2021-12-06 23:09:04,556 INFO L226 Difference]: Without dead ends: 185054 [2021-12-06 23:09:04,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=497, Unknown=0, NotChecked=0, Total=650 [2021-12-06 23:09:04,609 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 1675 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 3009 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 3672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 3009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:09:04,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1690 Valid, 2326 Invalid, 3672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 3009 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 23:09:04,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185054 states. [2021-12-06 23:09:12,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185054 to 184829. [2021-12-06 23:09:13,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184829 states, 154295 states have (on average 1.5848148028127937) internal successors, (244529), 154204 states have internal predecessors, (244529), 30465 states have call successors, (30465), 62 states have call predecessors, (30465), 68 states have return successors, (38125), 30571 states have call predecessors, (38125), 30462 states have call successors, (38125) [2021-12-06 23:09:13,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184829 states to 184829 states and 313119 transitions. [2021-12-06 23:09:13,619 INFO L78 Accepts]: Start accepts. Automaton has 184829 states and 313119 transitions. Word has length 129 [2021-12-06 23:09:13,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:09:13,619 INFO L470 AbstractCegarLoop]: Abstraction has 184829 states and 313119 transitions. [2021-12-06 23:09:13,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 8 states have internal predecessors, (90), 5 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-06 23:09:13,619 INFO L276 IsEmpty]: Start isEmpty. Operand 184829 states and 313119 transitions. [2021-12-06 23:09:13,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-06 23:09:13,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:09:13,668 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 23:09:13,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 23:09:13,668 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:09:13,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:09:13,668 INFO L85 PathProgramCache]: Analyzing trace with hash 474835644, now seen corresponding path program 1 times [2021-12-06 23:09:13,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:09:13,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290996208] [2021-12-06 23:09:13,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:13,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:09:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:13,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:09:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:13,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:09:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:13,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:09:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:13,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:09:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:13,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:09:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:13,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:09:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:13,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:09:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:13,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 23:09:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:13,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 23:09:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:13,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 23:09:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:13,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:09:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:13,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 23:09:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:13,749 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 23:09:13,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:09:13,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290996208] [2021-12-06 23:09:13,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290996208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:09:13,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:09:13,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 23:09:13,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772460036] [2021-12-06 23:09:13,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:09:13,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:09:13,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:13,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:09:13,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:09:13,750 INFO L87 Difference]: Start difference. First operand 184829 states and 313119 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:09:25,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:09:25,126 INFO L93 Difference]: Finished difference Result 278321 states and 490093 transitions. [2021-12-06 23:09:25,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 23:09:25,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 129 [2021-12-06 23:09:25,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:09:26,093 INFO L225 Difference]: With dead ends: 278321 [2021-12-06 23:09:26,093 INFO L226 Difference]: Without dead ends: 277961 [2021-12-06 23:09:26,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:09:26,188 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 2235 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 2431 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2245 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 3221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 2431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:09:26,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2245 Valid, 1938 Invalid, 3221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [790 Valid, 2431 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 23:09:26,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277961 states. [2021-12-06 23:09:39,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277961 to 277405. [2021-12-06 23:09:39,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277405 states, 231565 states have (on average 1.584829313583659) internal successors, (366991), 231390 states have internal predecessors, (366991), 45681 states have call successors, (45681), 141 states have call predecessors, (45681), 158 states have return successors, (64188), 45897 states have call predecessors, (64188), 45673 states have call successors, (64188) [2021-12-06 23:09:40,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277405 states to 277405 states and 476860 transitions. [2021-12-06 23:09:40,766 INFO L78 Accepts]: Start accepts. Automaton has 277405 states and 476860 transitions. Word has length 129 [2021-12-06 23:09:40,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:09:40,766 INFO L470 AbstractCegarLoop]: Abstraction has 277405 states and 476860 transitions. [2021-12-06 23:09:40,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:09:40,767 INFO L276 IsEmpty]: Start isEmpty. Operand 277405 states and 476860 transitions. [2021-12-06 23:09:41,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-06 23:09:41,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:09:41,145 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 23:09:41,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 23:09:41,146 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:09:41,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:09:41,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1719600125, now seen corresponding path program 1 times [2021-12-06 23:09:41,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:09:41,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535327264] [2021-12-06 23:09:41,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:41,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:09:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:41,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:09:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:41,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:09:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:41,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:09:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:41,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:09:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:41,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:09:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:41,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:09:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:41,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:09:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:41,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 23:09:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:41,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 23:09:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:41,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 23:09:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:41,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 23:09:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:41,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 23:09:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:41,292 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 23:09:41,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:09:41,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535327264] [2021-12-06 23:09:41,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535327264] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:09:41,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476371846] [2021-12-06 23:09:41,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:41,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:41,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:09:41,293 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:09:41,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 23:09:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:41,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 23:09:41,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:09:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 23:09:41,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:09:42,055 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 23:09:42,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476371846] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:09:42,055 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:09:42,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 26 [2021-12-06 23:09:42,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741037604] [2021-12-06 23:09:42,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:09:42,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 23:09:42,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:42,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 23:09:42,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2021-12-06 23:09:42,057 INFO L87 Difference]: Start difference. First operand 277405 states and 476860 transitions. Second operand has 26 states, 26 states have (on average 8.461538461538462) internal successors, (220), 20 states have internal predecessors, (220), 5 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (30), 8 states have call predecessors, (30), 5 states have call successors, (30) [2021-12-06 23:10:19,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:10:19,074 INFO L93 Difference]: Finished difference Result 829565 states and 1480224 transitions. [2021-12-06 23:10:19,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 23:10:19,075 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.461538461538462) internal successors, (220), 20 states have internal predecessors, (220), 5 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (30), 8 states have call predecessors, (30), 5 states have call successors, (30) Word has length 129 [2021-12-06 23:10:19,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:10:22,636 INFO L225 Difference]: With dead ends: 829565 [2021-12-06 23:10:22,637 INFO L226 Difference]: Without dead ends: 828119 [2021-12-06 23:10:23,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=576, Invalid=2504, Unknown=0, NotChecked=0, Total=3080 [2021-12-06 23:10:23,051 INFO L933 BasicCegarLoop]: 867 mSDtfsCounter, 3218 mSDsluCounter, 4479 mSDsCounter, 0 mSdLazyCounter, 9656 mSolverCounterSat, 1687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3233 SdHoareTripleChecker+Valid, 5346 SdHoareTripleChecker+Invalid, 11343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1687 IncrementalHoareTripleChecker+Valid, 9656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:10:23,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3233 Valid, 5346 Invalid, 11343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1687 Valid, 9656 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-06 23:10:23,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828119 states. [2021-12-06 23:11:01,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828119 to 554873. [2021-12-06 23:11:02,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554873 states, 463179 states have (on average 1.5847933520302087) internal successors, (734043), 462826 states have internal predecessors, (734043), 91360 states have call successors, (91360), 286 states have call predecessors, (91360), 333 states have return successors, (143496), 91808 states have call predecessors, (143496), 91344 states have call successors, (143496) [2021-12-06 23:11:04,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554873 states to 554873 states and 968899 transitions. [2021-12-06 23:11:04,275 INFO L78 Accepts]: Start accepts. Automaton has 554873 states and 968899 transitions. Word has length 129 [2021-12-06 23:11:04,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:11:04,276 INFO L470 AbstractCegarLoop]: Abstraction has 554873 states and 968899 transitions. [2021-12-06 23:11:04,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.461538461538462) internal successors, (220), 20 states have internal predecessors, (220), 5 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (30), 8 states have call predecessors, (30), 5 states have call successors, (30) [2021-12-06 23:11:04,276 INFO L276 IsEmpty]: Start isEmpty. Operand 554873 states and 968899 transitions. [2021-12-06 23:11:04,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 23:11:04,454 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:11:04,454 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 23:11:04,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 23:11:04,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:11:04,656 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:11:04,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:11:04,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1219138419, now seen corresponding path program 1 times [2021-12-06 23:11:04,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:11:04,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019350257] [2021-12-06 23:11:04,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:11:04,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:11:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:04,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:11:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:04,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:11:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:04,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:11:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:04,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:11:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:04,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:11:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:04,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:11:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:04,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:11:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:04,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 23:11:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:04,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 23:11:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:04,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 23:11:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:04,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 23:11:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:04,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 23:11:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:04,792 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 23:11:04,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:11:04,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019350257] [2021-12-06 23:11:04,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019350257] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:11:04,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:11:04,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 23:11:04,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367145685] [2021-12-06 23:11:04,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:11:04,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 23:11:04,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:11:04,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 23:11:04,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:11:04,795 INFO L87 Difference]: Start difference. First operand 554873 states and 968899 transitions. Second operand has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 23:11:30,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:11:30,622 INFO L93 Difference]: Finished difference Result 558939 states and 994259 transitions. [2021-12-06 23:11:30,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:11:30,623 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 130 [2021-12-06 23:11:30,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:11:32,863 INFO L225 Difference]: With dead ends: 558939 [2021-12-06 23:11:32,863 INFO L226 Difference]: Without dead ends: 555939 [2021-12-06 23:11:33,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2021-12-06 23:11:33,051 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 1422 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 2728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:11:33,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1437 Valid, 2121 Invalid, 2728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 23:11:33,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555939 states. [2021-12-06 23:12:06,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555939 to 554873. [2021-12-06 23:12:06,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554873 states, 463174 states have (on average 1.5847888698415715) internal successors, (734033), 462831 states have internal predecessors, (734033), 91360 states have call successors, (91360), 286 states have call predecessors, (91360), 338 states have return successors, (143501), 91803 states have call predecessors, (143501), 91344 states have call successors, (143501) [2021-12-06 23:12:08,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554873 states to 554873 states and 968894 transitions. [2021-12-06 23:12:08,881 INFO L78 Accepts]: Start accepts. Automaton has 554873 states and 968894 transitions. Word has length 130 [2021-12-06 23:12:08,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:12:08,881 INFO L470 AbstractCegarLoop]: Abstraction has 554873 states and 968894 transitions. [2021-12-06 23:12:08,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 23:12:08,882 INFO L276 IsEmpty]: Start isEmpty. Operand 554873 states and 968894 transitions. [2021-12-06 23:12:09,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 23:12:09,187 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:12:09,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:12:09,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 23:12:09,188 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:12:09,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:12:09,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1153685585, now seen corresponding path program 1 times [2021-12-06 23:12:09,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:12:09,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633711059] [2021-12-06 23:12:09,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:12:09,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:12:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:09,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:12:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:09,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:12:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:09,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 23:12:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:09,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:12:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:09,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 23:12:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:09,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 23:12:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:09,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 23:12:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:09,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 23:12:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 23:12:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:09,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 23:12:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:09,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 23:12:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:09,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 23:12:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 23:12:09,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:12:09,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633711059] [2021-12-06 23:12:09,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633711059] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:12:09,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159633872] [2021-12-06 23:12:09,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:12:09,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:12:09,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:12:09,262 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:12:09,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 23:12:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:09,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:12:09,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:12:09,489 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 23:12:09,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:12:09,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159633872] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:12:09,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:12:09,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-12-06 23:12:09,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540037456] [2021-12-06 23:12:09,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:12:09,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:12:09,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:12:09,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:12:09,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:12:09,491 INFO L87 Difference]: Start difference. First operand 554873 states and 968894 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:12:37,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:12:37,493 INFO L93 Difference]: Finished difference Result 832321 states and 1459833 transitions. [2021-12-06 23:12:37,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:12:37,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 130 [2021-12-06 23:12:37,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:12:39,939 INFO L225 Difference]: With dead ends: 832321 [2021-12-06 23:12:39,940 INFO L226 Difference]: Without dead ends: 554897 [2021-12-06 23:12:40,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:12:40,687 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 116 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1708 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 23:12:40,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 1708 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:12:41,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554897 states. [2021-12-06 23:13:15,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554897 to 554873. [2021-12-06 23:13:15,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554873 states, 463174 states have (on average 1.584784551809903) internal successors, (734031), 462831 states have internal predecessors, (734031), 91360 states have call successors, (91360), 286 states have call predecessors, (91360), 338 states have return successors, (143501), 91803 states have call predecessors, (143501), 91344 states have call successors, (143501) [2021-12-06 23:13:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554873 states to 554873 states and 968892 transitions. [2021-12-06 23:13:18,168 INFO L78 Accepts]: Start accepts. Automaton has 554873 states and 968892 transitions. Word has length 130 [2021-12-06 23:13:18,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:13:18,168 INFO L470 AbstractCegarLoop]: Abstraction has 554873 states and 968892 transitions. [2021-12-06 23:13:18,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:13:18,168 INFO L276 IsEmpty]: Start isEmpty. Operand 554873 states and 968892 transitions. [2021-12-06 23:13:18,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 23:13:18,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:13:18,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:13:18,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 23:13:18,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 23:13:18,563 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:13:18,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:13:18,564 INFO L85 PathProgramCache]: Analyzing trace with hash 277582468, now seen corresponding path program 1 times [2021-12-06 23:13:18,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:13:18,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794039400] [2021-12-06 23:13:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:13:18,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:13:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:18,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:13:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:18,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:13:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:18,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:13:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:18,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 23:13:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:18,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 23:13:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:18,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 23:13:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:18,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 23:13:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:18,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 23:13:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:18,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 23:13:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:18,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 23:13:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:18,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 23:13:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:18,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 23:13:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 23:13:18,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:13:18,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794039400] [2021-12-06 23:13:18,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794039400] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:13:18,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976714032] [2021-12-06 23:13:18,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:13:18,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:13:18,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:13:18,666 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:13:18,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 23:13:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:18,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 23:13:18,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:13:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 23:13:18,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:13:18,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976714032] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:13:18,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:13:18,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 8 [2021-12-06 23:13:18,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165359656] [2021-12-06 23:13:18,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:13:18,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:13:18,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:13:18,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:13:18,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:13:18,883 INFO L87 Difference]: Start difference. First operand 554873 states and 968892 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:13:47,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:13:47,308 INFO L93 Difference]: Finished difference Result 825255 states and 1441224 transitions. [2021-12-06 23:13:47,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:13:47,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 131 [2021-12-06 23:13:47,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:13:49,362 INFO L225 Difference]: With dead ends: 825255 [2021-12-06 23:13:49,362 INFO L226 Difference]: Without dead ends: 547829 [2021-12-06 23:13:49,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:13:49,955 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 119 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:13:49,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 1708 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:13:50,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547829 states. [2021-12-06 23:14:24,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547829 to 547827. [2021-12-06 23:14:24,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547827 states, 457397 states have (on average 1.5855176138015772) internal successors, (725211), 456771 states have internal predecessors, (725211), 90095 states have call successors, (90095), 285 states have call predecessors, (90095), 334 states have return successors, (141484), 90818 states have call predecessors, (141484), 90079 states have call successors, (141484) [2021-12-06 23:14:27,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547827 states to 547827 states and 956790 transitions. [2021-12-06 23:14:27,090 INFO L78 Accepts]: Start accepts. Automaton has 547827 states and 956790 transitions. Word has length 131 [2021-12-06 23:14:27,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:14:27,091 INFO L470 AbstractCegarLoop]: Abstraction has 547827 states and 956790 transitions. [2021-12-06 23:14:27,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:14:27,091 INFO L276 IsEmpty]: Start isEmpty. Operand 547827 states and 956790 transitions. [2021-12-06 23:14:27,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-06 23:14:27,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:14:27,447 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, 1] [2021-12-06 23:14:27,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 23:14:27,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 23:14:27,649 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:14:27,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:14:27,650 INFO L85 PathProgramCache]: Analyzing trace with hash 392420019, now seen corresponding path program 1 times [2021-12-06 23:14:27,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:14:27,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691195214] [2021-12-06 23:14:27,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:14:27,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:14:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:27,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:14:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:27,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:14:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:27,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:14:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:27,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:14:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:27,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:14:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:27,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:14:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:27,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:14:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:27,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 23:14:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:27,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 23:14:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:27,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 23:14:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:27,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 23:14:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:27,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 23:14:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:27,796 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 23:14:27,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:14:27,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691195214] [2021-12-06 23:14:27,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691195214] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:14:27,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:14:27,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:14:27,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979999418] [2021-12-06 23:14:27,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:14:27,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:14:27,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:14:27,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:14:27,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:14:27,798 INFO L87 Difference]: Start difference. First operand 547827 states and 956790 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:14:55,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:14:55,936 INFO L93 Difference]: Finished difference Result 552091 states and 981848 transitions. [2021-12-06 23:14:55,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:14:55,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 133 [2021-12-06 23:14:55,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:14:58,181 INFO L225 Difference]: With dead ends: 552091 [2021-12-06 23:14:58,181 INFO L226 Difference]: Without dead ends: 549313 [2021-12-06 23:14:58,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:14:58,364 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 1268 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:14:58,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1282 Valid, 917 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 23:14:58,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549313 states. [2021-12-06 23:15:34,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549313 to 547571. [2021-12-06 23:15:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547571 states, 457226 states have (on average 1.585561625979275) internal successors, (724960), 456587 states have internal predecessors, (724960), 89987 states have call successors, (89987), 319 states have call predecessors, (89987), 357 states have return successors, (141318), 90704 states have call predecessors, (141318), 89975 states have call successors, (141318) [2021-12-06 23:15:36,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547571 states to 547571 states and 956265 transitions. [2021-12-06 23:15:36,706 INFO L78 Accepts]: Start accepts. Automaton has 547571 states and 956265 transitions. Word has length 133 [2021-12-06 23:15:36,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:15:36,706 INFO L470 AbstractCegarLoop]: Abstraction has 547571 states and 956265 transitions. [2021-12-06 23:15:36,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 23:15:36,706 INFO L276 IsEmpty]: Start isEmpty. Operand 547571 states and 956265 transitions. [2021-12-06 23:15:38,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-12-06 23:15:38,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:15:38,981 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 23:15:38,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 23:15:38,981 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:15:38,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:15:38,982 INFO L85 PathProgramCache]: Analyzing trace with hash -858993857, now seen corresponding path program 1 times [2021-12-06 23:15:38,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:15:38,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459805107] [2021-12-06 23:15:38,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:15:38,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:15:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:15:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:15:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:15:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:15:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:15:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:15:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 23:15:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:15:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:15:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:15:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 23:15:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 23:15:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 23:15:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 23:15:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 23:15:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 23:15:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 23:15:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:15:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-06 23:15:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 23:15:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-06 23:15:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-06 23:15:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-06 23:15:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:39,173 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 23:15:39,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:15:39,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459805107] [2021-12-06 23:15:39,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459805107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:15:39,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:15:39,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 23:15:39,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241301992] [2021-12-06 23:15:39,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:15:39,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:15:39,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:15:39,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:15:39,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:15:39,175 INFO L87 Difference]: Start difference. First operand 547571 states and 956265 transitions. Second operand has 9 states, 9 states have (on average 15.0) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (24), 7 states have call predecessors, (24), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-06 23:16:08,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:16:08,446 INFO L93 Difference]: Finished difference Result 550517 states and 979706 transitions. [2021-12-06 23:16:08,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 23:16:08,447 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.0) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (24), 7 states have call predecessors, (24), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 219 [2021-12-06 23:16:08,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:16:10,679 INFO L225 Difference]: With dead ends: 550517 [2021-12-06 23:16:10,680 INFO L226 Difference]: Without dead ends: 549061 [2021-12-06 23:16:10,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:16:10,860 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 795 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:16:10,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 1343 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 23:16:11,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549061 states. [2021-12-06 23:16:45,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549061 to 547167. [2021-12-06 23:16:46,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547167 states, 456923 states have (on average 1.5856610413570777) internal successors, (724525), 456270 states have internal predecessors, (724525), 89933 states have call successors, (89933), 283 states have call predecessors, (89933), 310 states have return successors, (141236), 90647 states have call predecessors, (141236), 89923 states have call successors, (141236) [2021-12-06 23:16:48,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547167 states to 547167 states and 955694 transitions. [2021-12-06 23:16:48,220 INFO L78 Accepts]: Start accepts. Automaton has 547167 states and 955694 transitions. Word has length 219 [2021-12-06 23:16:48,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:16:48,220 INFO L470 AbstractCegarLoop]: Abstraction has 547167 states and 955694 transitions. [2021-12-06 23:16:48,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.0) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (24), 7 states have call predecessors, (24), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-06 23:16:48,220 INFO L276 IsEmpty]: Start isEmpty. Operand 547167 states and 955694 transitions. [2021-12-06 23:16:50,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-12-06 23:16:50,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:16:50,614 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 23:16:50,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 23:16:50,614 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:16:50,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:16:50,614 INFO L85 PathProgramCache]: Analyzing trace with hash 539959745, now seen corresponding path program 1 times [2021-12-06 23:16:50,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:16:50,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350753961] [2021-12-06 23:16:50,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:16:50,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:16:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:16:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:16:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:16:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:16:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:16:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:16:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 23:16:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:16:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:16:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:16:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 23:16:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 23:16:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 23:16:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 23:16:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 23:16:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 23:16:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 23:16:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:16:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-06 23:16:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 23:16:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-06 23:16:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-06 23:16:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-06 23:16:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-06 23:16:50,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:16:50,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350753961] [2021-12-06 23:16:50,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350753961] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:16:50,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456557180] [2021-12-06 23:16:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:16:50,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:16:50,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:16:50,795 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:16:50,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fece5600-99b0-4c3d-99be-b847b65cbd3b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 23:16:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:50,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 1524 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 23:16:50,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:16:51,220 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 23:16:51,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:16:51,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456557180] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:16:51,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:16:51,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2021-12-06 23:16:51,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155518650] [2021-12-06 23:16:51,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:16:51,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:16:51,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:16:51,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:16:51,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2021-12-06 23:16:51,221 INFO L87 Difference]: Start difference. First operand 547167 states and 955694 transitions. Second operand has 11 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 6 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) [2021-12-06 23:17:21,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:17:21,096 INFO L93 Difference]: Finished difference Result 550161 states and 959847 transitions. [2021-12-06 23:17:21,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 23:17:21,097 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 6 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) Word has length 219 [2021-12-06 23:17:21,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:17:23,254 INFO L225 Difference]: With dead ends: 550161 [2021-12-06 23:17:23,255 INFO L226 Difference]: Without dead ends: 549233 [2021-12-06 23:17:23,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=1190, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 23:17:23,429 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 1022 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 4801 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 5115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 4801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:17:23,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 1763 Invalid, 5115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 4801 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 23:17:23,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549233 states.