./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7 --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5ba89c3eceb6ce3b33f7045e58fd9531469c7ed109a8240b2f15aad930b1478d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:54:45,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:54:45,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:54:45,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:54:45,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:54:45,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:54:45,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:54:45,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:54:45,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:54:45,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:54:45,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:54:45,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:54:45,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:54:45,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:54:45,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:54:45,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:54:45,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:54:45,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:54:45,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:54:45,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:54:45,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:54:45,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:54:45,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:54:45,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:54:45,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:54:45,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:54:45,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:54:45,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:54:45,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:54:45,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:54:45,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:54:45,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:54:45,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:54:45,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:54:45,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:54:45,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:54:45,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:54:45,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:54:45,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:54:45,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:54:45,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:54:45,546 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 17:54:45,599 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:54:45,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:54:45,600 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:54:45,600 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:54:45,600 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:54:45,601 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:54:45,601 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:54:45,601 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:54:45,601 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:54:45,602 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:54:45,602 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:54:45,602 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:54:45,602 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:54:45,602 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:54:45,603 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:54:45,603 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:54:45,603 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:54:45,603 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:54:45,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:54:45,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:54:45,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:54:45,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:54:45,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:54:45,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:54:45,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:54:45,605 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:54:45,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:54:45,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:54:45,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:54:45,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:54:45,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:54:45,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:54:45,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:54:45,607 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:54:45,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:54:45,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:54:45,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:54:45,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:54:45,608 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba89c3eceb6ce3b33f7045e58fd9531469c7ed109a8240b2f15aad930b1478d [2021-11-25 17:54:45,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:54:45,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:54:45,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:54:45,996 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:54:45,997 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:54:45,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i [2021-11-25 17:54:46,065 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/data/fdf658ec0/67842d0b86554d70b0fd71d273beb7c4/FLAG8a4fcab6c [2021-11-25 17:54:47,016 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:54:47,017 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i [2021-11-25 17:54:47,068 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/data/fdf658ec0/67842d0b86554d70b0fd71d273beb7c4/FLAG8a4fcab6c [2021-11-25 17:54:47,438 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/data/fdf658ec0/67842d0b86554d70b0fd71d273beb7c4 [2021-11-25 17:54:47,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:54:47,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:54:47,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:54:47,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:54:47,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:54:47,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:54:47" (1/1) ... [2021-11-25 17:54:47,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6881bdef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:47, skipping insertion in model container [2021-11-25 17:54:47,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:54:47" (1/1) ... [2021-11-25 17:54:47,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:54:47,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:54:49,100 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_41037a92-22ef-48e6-8640-811249d497bd/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i[170192,170205] [2021-11-25 17:54:50,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:54:50,656 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:54:50,844 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_41037a92-22ef-48e6-8640-811249d497bd/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i[170192,170205] [2021-11-25 17:54:51,167 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:54:51,489 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:54:51,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:51 WrapperNode [2021-11-25 17:54:51,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:54:51,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:54:51,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:54:51,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:54:51,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:51" (1/1) ... [2021-11-25 17:54:51,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:51" (1/1) ... [2021-11-25 17:54:51,886 INFO L137 Inliner]: procedures = 347, calls = 3093, calls flagged for inlining = 175, calls inlined = 164, statements flattened = 6488 [2021-11-25 17:54:51,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:54:51,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:54:51,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:54:51,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:54:51,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:51" (1/1) ... [2021-11-25 17:54:51,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:51" (1/1) ... [2021-11-25 17:54:51,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:51" (1/1) ... [2021-11-25 17:54:51,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:51" (1/1) ... [2021-11-25 17:54:52,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:51" (1/1) ... [2021-11-25 17:54:52,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:51" (1/1) ... [2021-11-25 17:54:52,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:51" (1/1) ... [2021-11-25 17:54:52,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:54:52,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:54:52,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:54:52,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:54:52,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:51" (1/1) ... [2021-11-25 17:54:52,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:54:52,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:54:52,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:54:52,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:54:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_do_ioctl [2021-11-25 17:54:52,522 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_do_ioctl [2021-11-25 17:54:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_disable_cam_entry_post [2021-11-25 17:54:52,522 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_disable_cam_entry_post [2021-11-25 17:54:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 17:54:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 17:54:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 17:54:52,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 17:54:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure pm_runtime_put [2021-11-25 17:54:52,523 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_runtime_put [2021-11-25 17:54:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_write [2021-11-25 17:54:52,524 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_write [2021-11-25 17:54:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 17:54:52,524 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 17:54:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_select_mii [2021-11-25 17:54:52,525 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_select_mii [2021-11-25 17:54:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_to_edmac [2021-11-25 17:54:52,526 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_to_edmac [2021-11-25 17:54:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_read [2021-11-25 17:54:52,526 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_read [2021-11-25 17:54:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 17:54:52,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 17:54:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_write [2021-11-25 17:54:52,527 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_write [2021-11-25 17:54:52,527 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-25 17:54:52,527 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kmalloc [2021-11-25 17:54:52,527 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kmalloc [2021-11-25 17:54:52,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-25 17:54:52,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-25 17:54:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_disable_cam_entry_table [2021-11-25 17:54:52,528 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_disable_cam_entry_table [2021-11-25 17:54:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 17:54:52,529 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 17:54:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_get_vtag_index [2021-11-25 17:54:52,529 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_get_vtag_index [2021-11-25 17:54:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_get_edtrr_trns [2021-11-25 17:54:52,529 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_get_edtrr_trns [2021-11-25 17:54:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-25 17:54:52,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-25 17:54:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_rate_giga [2021-11-25 17:54:52,530 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_rate_giga [2021-11-25 17:54:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2021-11-25 17:54:52,531 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2021-11-25 17:54:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 17:54:52,531 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 17:54:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 17:54:52,531 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 17:54:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure devm_ioremap_resource [2021-11-25 17:54:52,532 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_ioremap_resource [2021-11-25 17:54:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 17:54:52,534 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 17:54:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure bb_clr [2021-11-25 17:54:52,534 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_clr [2021-11-25 17:54:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 17:54:52,534 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 17:54:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure pm_runtime_get_sync [2021-11-25 17:54:52,535 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_runtime_get_sync [2021-11-25 17:54:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_duplex [2021-11-25 17:54:52,535 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_duplex [2021-11-25 17:54:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-25 17:54:52,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-25 17:54:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 17:54:52,536 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 17:54:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_get_post_reg_offset [2021-11-25 17:54:52,536 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_get_post_reg_offset [2021-11-25 17:54:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_chip_reset_r8a7740 [2021-11-25 17:54:52,536 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_chip_reset_r8a7740 [2021-11-25 17:54:52,537 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 17:54:52,537 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 17:54:52,537 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_chip_reset_giga [2021-11-25 17:54:52,537 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_chip_reset_giga [2021-11-25 17:54:52,537 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_free_dma_buffer [2021-11-25 17:54:52,537 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_free_dma_buffer [2021-11-25 17:54:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 17:54:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_busy [2021-11-25 17:54:52,538 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_busy [2021-11-25 17:54:52,538 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_rate_r8a777x [2021-11-25 17:54:52,539 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_rate_r8a777x [2021-11-25 17:54:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 17:54:52,540 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 17:54:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2021-11-25 17:54:52,540 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2021-11-25 17:54:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-11-25 17:54:52,541 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-11-25 17:54:52,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 17:54:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-25 17:54:52,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-25 17:54:52,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb_12 [2021-11-25 17:54:52,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb_12 [2021-11-25 17:54:52,543 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-25 17:54:52,543 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-25 17:54:52,543 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 17:54:52,544 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 17:54:52,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-25 17:54:52,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 17:54:52,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 17:54:52,545 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 17:54:52,545 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 17:54:52,545 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tx_timeout [2021-11-25 17:54:52,545 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tx_timeout [2021-11-25 17:54:52,546 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2021-11-25 17:54:52,546 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2021-11-25 17:54:52,546 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_runtime_nop [2021-11-25 17:54:52,546 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_runtime_nop [2021-11-25 17:54:52,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 17:54:52,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 17:54:52,547 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_ring_free [2021-11-25 17:54:52,547 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_ring_free [2021-11-25 17:54:52,547 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-25 17:54:52,548 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-25 17:54:52,548 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_open [2021-11-25 17:54:52,549 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_open [2021-11-25 17:54:52,552 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-11-25 17:54:52,552 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-11-25 17:54:52,552 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 17:54:52,553 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 17:54:52,553 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_multicast_list [2021-11-25 17:54:52,555 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_multicast_list [2021-11-25 17:54:52,555 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 17:54:52,555 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 17:54:52,555 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 17:54:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 17:54:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_chip_reset [2021-11-25 17:54:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_chip_reset [2021-11-25 17:54:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 17:54:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 17:54:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 17:54:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure pm_runtime_put_sync [2021-11-25 17:54:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_runtime_put_sync [2021-11-25 17:54:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 17:54:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 17:54:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_read_entry [2021-11-25 17:54:52,564 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_read_entry [2021-11-25 17:54:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_txfree [2021-11-25 17:54:52,564 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_txfree [2021-11-25 17:54:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 17:54:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_start_xmit [2021-11-25 17:54:52,565 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_start_xmit [2021-11-25 17:54:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-25 17:54:52,565 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-25 17:54:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_rcv_snd_disable [2021-11-25 17:54:52,565 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_rcv_snd_disable [2021-11-25 17:54:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-25 17:54:52,565 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-25 17:54:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-25 17:54:52,566 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-25 17:54:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 17:54:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 17:54:52,566 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 17:54:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 17:54:52,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 17:54:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_close [2021-11-25 17:54:52,567 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_close [2021-11-25 17:54:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_read [2021-11-25 17:54:52,567 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_read [2021-11-25 17:54:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_soft_swap [2021-11-25 17:54:52,568 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_soft_swap [2021-11-25 17:54:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 17:54:52,568 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 17:54:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-25 17:54:52,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-25 17:54:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_is_rz_fast_ether [2021-11-25 17:54:52,569 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_is_rz_fast_ether [2021-11-25 17:54:52,569 INFO L130 BoogieDeclarations]: Found specification of procedure bb_set [2021-11-25 17:54:52,569 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_set [2021-11-25 17:54:52,569 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_find_entry [2021-11-25 17:54:52,570 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_find_entry [2021-11-25 17:54:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 17:54:52,570 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 17:54:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 17:54:52,570 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 17:54:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_dev_init [2021-11-25 17:54:52,571 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_dev_init [2021-11-25 17:54:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_get_stats [2021-11-25 17:54:52,571 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_get_stats [2021-11-25 17:54:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 17:54:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_vlan_rx_kill_vid [2021-11-25 17:54:52,571 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_vlan_rx_kill_vid [2021-11-25 17:54:52,572 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_rate_sh7724 [2021-11-25 17:54:52,572 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_rate_sh7724 [2021-11-25 17:54:52,572 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-25 17:54:52,572 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-25 17:54:52,573 INFO L130 BoogieDeclarations]: Found specification of procedure pm_runtime_disable [2021-11-25 17:54:52,573 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_runtime_disable [2021-11-25 17:54:52,574 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_adjust_link [2021-11-25 17:54:52,575 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_adjust_link [2021-11-25 17:54:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 17:54:52,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 17:54:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-25 17:54:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_vlan_rx_add_vid [2021-11-25 17:54:52,575 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_vlan_rx_add_vid [2021-11-25 17:54:52,576 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_ring_init [2021-11-25 17:54:52,576 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_ring_init [2021-11-25 17:54:52,576 INFO L130 BoogieDeclarations]: Found specification of procedure __pm_runtime_idle [2021-11-25 17:54:52,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __pm_runtime_idle [2021-11-25 17:54:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2021-11-25 17:54:52,581 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2021-11-25 17:54:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 17:54:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_purge_mcast [2021-11-25 17:54:52,582 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_purge_mcast [2021-11-25 17:54:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 17:54:52,582 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 17:54:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-25 17:54:52,583 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-25 17:54:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:54:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure is_multicast_ether_addr [2021-11-25 17:54:52,583 INFO L138 BoogieDeclarations]: Found implementation of procedure is_multicast_ether_addr [2021-11-25 17:54:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 17:54:52,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 17:54:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 17:54:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 17:54:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-25 17:54:52,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-25 17:54:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 17:54:52,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 17:54:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-25 17:54:52,585 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-25 17:54:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_register [2021-11-25 17:54:52,586 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_register [2021-11-25 17:54:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_is_gether [2021-11-25 17:54:52,586 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_is_gether [2021-11-25 17:54:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-25 17:54:52,588 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-25 17:54:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_rate_sh7757 [2021-11-25 17:54:52,588 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_rate_sh7757 [2021-11-25 17:54:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_receive_align [2021-11-25 17:54:52,588 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_receive_align [2021-11-25 17:54:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_rcv_snd_enable [2021-11-25 17:54:52,589 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_rcv_snd_enable [2021-11-25 17:54:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_get_offset [2021-11-25 17:54:52,589 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_get_offset [2021-11-25 17:54:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_rate_gether [2021-11-25 17:54:52,589 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_rate_gether [2021-11-25 17:54:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-25 17:54:52,590 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-25 17:54:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 17:54:52,590 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 17:54:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 17:54:52,591 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 17:54:52,591 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-25 17:54:52,592 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-25 17:54:52,592 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 17:54:52,592 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 17:54:52,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:54:52,592 INFO L130 BoogieDeclarations]: Found specification of procedure sh_mdio_release [2021-11-25 17:54:52,592 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_mdio_release [2021-11-25 17:54:52,592 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_write_entry [2021-11-25 17:54:52,593 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_write_entry [2021-11-25 17:54:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_get_post_bit [2021-11-25 17:54:52,593 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_get_post_bit [2021-11-25 17:54:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:54:52,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:54:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure free_mdio_bitbang [2021-11-25 17:54:52,593 INFO L138 BoogieDeclarations]: Found implementation of procedure free_mdio_bitbang [2021-11-25 17:54:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 17:54:52,594 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 17:54:53,550 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:54:53,555 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:54:54,142 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 17:55:58,190 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:56:00,865 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:56:00,866 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-25 17:56:00,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:56:00 BoogieIcfgContainer [2021-11-25 17:56:00,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:56:00,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:56:00,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:56:00,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:56:00,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:54:47" (1/3) ... [2021-11-25 17:56:00,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2350fbd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:56:00, skipping insertion in model container [2021-11-25 17:56:00,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:51" (2/3) ... [2021-11-25 17:56:00,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2350fbd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:56:00, skipping insertion in model container [2021-11-25 17:56:00,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:56:00" (3/3) ... [2021-11-25 17:56:00,885 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i [2021-11-25 17:56:00,892 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:56:00,893 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 17:56:00,976 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:56:00,994 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=FINITE_AUTOMATA, 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 [2021-11-25 17:56:00,994 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 17:56:01,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 1914 states, 1177 states have (on average 1.3738317757009346) internal successors, (1617), 1255 states have internal predecessors, (1617), 624 states have call successors, (624), 118 states have call predecessors, (624), 117 states have return successors, (605), 579 states have call predecessors, (605), 605 states have call successors, (605) [2021-11-25 17:56:01,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 17:56:01,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:01,112 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-11-25 17:56:01,114 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:56:01,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:01,126 INFO L85 PathProgramCache]: Analyzing trace with hash 897052267, now seen corresponding path program 1 times [2021-11-25 17:56:01,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:01,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704542454] [2021-11-25 17:56:01,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:01,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:02,421 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-25 17:56:02,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:02,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704542454] [2021-11-25 17:56:02,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704542454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:02,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:02,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:56:02,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813601116] [2021-11-25 17:56:02,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:02,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:56:02,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:02,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:56:02,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:56:02,488 INFO L87 Difference]: Start difference. First operand has 1914 states, 1177 states have (on average 1.3738317757009346) internal successors, (1617), 1255 states have internal predecessors, (1617), 624 states have call successors, (624), 118 states have call predecessors, (624), 117 states have return successors, (605), 579 states have call predecessors, (605), 605 states have call successors, (605) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-25 17:56:04,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:56:08,025 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:56:10,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:10,321 INFO L93 Difference]: Finished difference Result 5515 states and 8272 transitions. [2021-11-25 17:56:10,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:56:10,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 78 [2021-11-25 17:56:10,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:10,391 INFO L225 Difference]: With dead ends: 5515 [2021-11-25 17:56:10,391 INFO L226 Difference]: Without dead ends: 3574 [2021-11-25 17:56:10,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:56:10,423 INFO L933 BasicCegarLoop]: 3134 mSDtfsCounter, 2539 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2539 SdHoareTripleChecker+Valid, 5726 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:10,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2539 Valid, 5726 Invalid, 424 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 413 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2021-11-25 17:56:10,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2021-11-25 17:56:10,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 3574. [2021-11-25 17:56:10,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 2221 states have (on average 1.3556956325979288) internal successors, (3011), 2321 states have internal predecessors, (3011), 1122 states have call successors, (1122), 231 states have call predecessors, (1122), 230 states have return successors, (1121), 1071 states have call predecessors, (1121), 1121 states have call successors, (1121) [2021-11-25 17:56:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 5254 transitions. [2021-11-25 17:56:10,842 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 5254 transitions. Word has length 78 [2021-11-25 17:56:10,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:10,844 INFO L470 AbstractCegarLoop]: Abstraction has 3574 states and 5254 transitions. [2021-11-25 17:56:10,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-25 17:56:10,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 5254 transitions. [2021-11-25 17:56:10,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-25 17:56:10,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:10,854 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-11-25 17:56:10,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:56:10,855 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:56:10,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:10,856 INFO L85 PathProgramCache]: Analyzing trace with hash 635537063, now seen corresponding path program 1 times [2021-11-25 17:56:10,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:10,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222686873] [2021-11-25 17:56:10,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:10,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-11-25 17:56:11,487 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:11,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222686873] [2021-11-25 17:56:11,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222686873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:11,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:11,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:56:11,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566373809] [2021-11-25 17:56:11,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:11,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:56:11,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:11,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:56:11,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:56:11,496 INFO L87 Difference]: Start difference. First operand 3574 states and 5254 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-25 17:56:13,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:56:17,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:56:19,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:19,360 INFO L93 Difference]: Finished difference Result 7020 states and 10374 transitions. [2021-11-25 17:56:19,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:56:19,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 87 [2021-11-25 17:56:19,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:19,453 INFO L225 Difference]: With dead ends: 7020 [2021-11-25 17:56:19,453 INFO L226 Difference]: Without dead ends: 7015 [2021-11-25 17:56:19,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:56:19,463 INFO L933 BasicCegarLoop]: 3349 mSDtfsCounter, 2534 mSDsluCounter, 6337 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2534 SdHoareTripleChecker+Valid, 9276 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:19,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2534 Valid, 9276 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 655 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2021-11-25 17:56:19,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7015 states. [2021-11-25 17:56:19,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7015 to 7007. [2021-11-25 17:56:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7007 states, 4365 states have (on average 1.3567010309278351) internal successors, (5922), 4563 states have internal predecessors, (5922), 2183 states have call successors, (2183), 459 states have call predecessors, (2183), 458 states have return successors, (2252), 2084 states have call predecessors, (2252), 2182 states have call successors, (2252) [2021-11-25 17:56:20,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7007 states to 7007 states and 10357 transitions. [2021-11-25 17:56:20,044 INFO L78 Accepts]: Start accepts. Automaton has 7007 states and 10357 transitions. Word has length 87 [2021-11-25 17:56:20,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:20,045 INFO L470 AbstractCegarLoop]: Abstraction has 7007 states and 10357 transitions. [2021-11-25 17:56:20,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-25 17:56:20,045 INFO L276 IsEmpty]: Start isEmpty. Operand 7007 states and 10357 transitions. [2021-11-25 17:56:20,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-25 17:56:20,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:20,080 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:56:20,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 17:56:20,080 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:56:20,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:20,081 INFO L85 PathProgramCache]: Analyzing trace with hash 521766805, now seen corresponding path program 1 times [2021-11-25 17:56:20,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:20,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142377524] [2021-11-25 17:56:20,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:20,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-25 17:56:20,815 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:20,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142377524] [2021-11-25 17:56:20,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142377524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:20,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:20,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:56:20,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096203972] [2021-11-25 17:56:20,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:20,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:56:20,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:20,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:56:20,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:56:20,820 INFO L87 Difference]: Start difference. First operand 7007 states and 10357 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 17:56:22,936 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:56:26,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:56:28,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:28,025 INFO L93 Difference]: Finished difference Result 20520 states and 30353 transitions. [2021-11-25 17:56:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:56:28,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 185 [2021-11-25 17:56:28,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:28,197 INFO L225 Difference]: With dead ends: 20520 [2021-11-25 17:56:28,198 INFO L226 Difference]: Without dead ends: 13536 [2021-11-25 17:56:28,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:56:28,268 INFO L933 BasicCegarLoop]: 3097 mSDtfsCounter, 2401 mSDsluCounter, 2743 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 5646 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:28,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2401 Valid, 5646 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 413 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2021-11-25 17:56:28,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13536 states. [2021-11-25 17:56:29,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13536 to 13529. [2021-11-25 17:56:29,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13529 states, 8455 states have (on average 1.3600236546422235) internal successors, (11499), 8849 states have internal predecessors, (11499), 4191 states have call successors, (4191), 883 states have call predecessors, (4191), 882 states have return successors, (4330), 3996 states have call predecessors, (4330), 4190 states have call successors, (4330) [2021-11-25 17:56:29,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13529 states to 13529 states and 20020 transitions. [2021-11-25 17:56:29,423 INFO L78 Accepts]: Start accepts. Automaton has 13529 states and 20020 transitions. Word has length 185 [2021-11-25 17:56:29,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:29,425 INFO L470 AbstractCegarLoop]: Abstraction has 13529 states and 20020 transitions. [2021-11-25 17:56:29,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 17:56:29,427 INFO L276 IsEmpty]: Start isEmpty. Operand 13529 states and 20020 transitions. [2021-11-25 17:56:29,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-25 17:56:29,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:29,478 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:56:29,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 17:56:29,479 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:56:29,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:29,480 INFO L85 PathProgramCache]: Analyzing trace with hash -845385531, now seen corresponding path program 1 times [2021-11-25 17:56:29,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:29,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781211228] [2021-11-25 17:56:29,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:29,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:30,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:30,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781211228] [2021-11-25 17:56:30,029 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-25 17:56:30,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224636718] [2021-11-25 17:56:30,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:30,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:56:30,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:56:30,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:56:30,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 17:56:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:32,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 5271 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 17:56:32,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:56:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-11-25 17:56:32,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:56:32,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224636718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:32,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:32,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:56:32,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669401233] [2021-11-25 17:56:32,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:32,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:56:32,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:32,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:56:32,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:56:32,636 INFO L87 Difference]: Start difference. First operand 13529 states and 20020 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 17:56:34,753 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:56:37,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:56:40,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:40,108 INFO L93 Difference]: Finished difference Result 39702 states and 58657 transitions. [2021-11-25 17:56:40,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:56:40,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 189 [2021-11-25 17:56:40,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:40,329 INFO L225 Difference]: With dead ends: 39702 [2021-11-25 17:56:40,329 INFO L226 Difference]: Without dead ends: 26196 [2021-11-25 17:56:40,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:56:40,457 INFO L933 BasicCegarLoop]: 3063 mSDtfsCounter, 2369 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2369 SdHoareTripleChecker+Valid, 5594 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:40,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2369 Valid, 5594 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 438 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2021-11-25 17:56:40,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26196 states. [2021-11-25 17:56:42,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26196 to 26189. [2021-11-25 17:56:42,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26189 states, 16431 states have (on average 1.3586513298034204) internal successors, (22324), 17211 states have internal predecessors, (22324), 8003 states have call successors, (8003), 1755 states have call predecessors, (8003), 1754 states have return successors, (8266), 7614 states have call predecessors, (8266), 8002 states have call successors, (8266) [2021-11-25 17:56:42,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26189 states to 26189 states and 38593 transitions. [2021-11-25 17:56:42,412 INFO L78 Accepts]: Start accepts. Automaton has 26189 states and 38593 transitions. Word has length 189 [2021-11-25 17:56:42,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:42,414 INFO L470 AbstractCegarLoop]: Abstraction has 26189 states and 38593 transitions. [2021-11-25 17:56:42,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 17:56:42,414 INFO L276 IsEmpty]: Start isEmpty. Operand 26189 states and 38593 transitions. [2021-11-25 17:56:42,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-25 17:56:42,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:42,480 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:56:42,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 17:56:42,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:56:42,696 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:56:42,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:42,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1668036877, now seen corresponding path program 1 times [2021-11-25 17:56:42,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:42,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808717565] [2021-11-25 17:56:42,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:42,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:43,188 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-25 17:56:43,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:43,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808717565] [2021-11-25 17:56:43,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808717565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:43,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:43,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:56:43,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330266187] [2021-11-25 17:56:43,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:43,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:56:43,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:43,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:56:43,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:56:43,195 INFO L87 Difference]: Start difference. First operand 26189 states and 38593 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 17:56:45,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:56:48,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:56:51,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:56:51,186 INFO L93 Difference]: Finished difference Result 64239 states and 94219 transitions. [2021-11-25 17:56:51,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:56:51,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 232 [2021-11-25 17:56:51,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:56:51,422 INFO L225 Difference]: With dead ends: 64239 [2021-11-25 17:56:51,422 INFO L226 Difference]: Without dead ends: 38073 [2021-11-25 17:56:51,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:56:51,554 INFO L933 BasicCegarLoop]: 3187 mSDtfsCounter, 2408 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2408 SdHoareTripleChecker+Valid, 5679 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:56:51,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2408 Valid, 5679 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 486 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2021-11-25 17:56:51,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38073 states. [2021-11-25 17:56:54,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38073 to 38068. [2021-11-25 17:56:54,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38068 states, 23782 states have (on average 1.3501387604070305) internal successors, (32109), 24951 states have internal predecessors, (32109), 11654 states have call successors, (11654), 2632 states have call predecessors, (11654), 2631 states have return successors, (11877), 11072 states have call predecessors, (11877), 11653 states have call successors, (11877) [2021-11-25 17:56:54,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38068 states to 38068 states and 55640 transitions. [2021-11-25 17:56:54,958 INFO L78 Accepts]: Start accepts. Automaton has 38068 states and 55640 transitions. Word has length 232 [2021-11-25 17:56:54,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:56:54,959 INFO L470 AbstractCegarLoop]: Abstraction has 38068 states and 55640 transitions. [2021-11-25 17:56:54,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 17:56:54,959 INFO L276 IsEmpty]: Start isEmpty. Operand 38068 states and 55640 transitions. [2021-11-25 17:56:55,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-25 17:56:55,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:56:55,020 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:56:55,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 17:56:55,021 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:56:55,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:56:55,022 INFO L85 PathProgramCache]: Analyzing trace with hash -321128409, now seen corresponding path program 1 times [2021-11-25 17:56:55,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:56:55,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824708859] [2021-11-25 17:56:55,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:56:55,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:56:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:56:55,449 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-25 17:56:55,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:56:55,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824708859] [2021-11-25 17:56:55,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824708859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:56:55,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:56:55,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:56:55,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940805149] [2021-11-25 17:56:55,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:56:55,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:56:55,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:55,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:56:55,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:56:55,453 INFO L87 Difference]: Start difference. First operand 38068 states and 55640 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 17:56:57,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:57:00,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:57:04,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:04,780 INFO L93 Difference]: Finished difference Result 94843 states and 138285 transitions. [2021-11-25 17:57:04,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:57:04,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 233 [2021-11-25 17:57:04,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:05,135 INFO L225 Difference]: With dead ends: 94843 [2021-11-25 17:57:05,135 INFO L226 Difference]: Without dead ends: 56801 [2021-11-25 17:57:05,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:57:05,509 INFO L933 BasicCegarLoop]: 3310 mSDtfsCounter, 2314 mSDsluCounter, 2648 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 5765 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:05,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2314 Valid, 5765 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 524 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2021-11-25 17:57:05,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56801 states. [2021-11-25 17:57:08,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56801 to 56780. [2021-11-25 17:57:08,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56780 states, 35564 states have (on average 1.3499325160274436) internal successors, (48009), 37471 states have internal predecessors, (48009), 17241 states have call successors, (17241), 3975 states have call predecessors, (17241), 3974 states have return successors, (17388), 16273 states have call predecessors, (17388), 17240 states have call successors, (17388) [2021-11-25 17:57:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56780 states to 56780 states and 82638 transitions. [2021-11-25 17:57:09,389 INFO L78 Accepts]: Start accepts. Automaton has 56780 states and 82638 transitions. Word has length 233 [2021-11-25 17:57:09,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:09,390 INFO L470 AbstractCegarLoop]: Abstraction has 56780 states and 82638 transitions. [2021-11-25 17:57:09,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 17:57:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 56780 states and 82638 transitions. [2021-11-25 17:57:09,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-25 17:57:09,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:09,435 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:57:09,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 17:57:09,435 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:57:09,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:09,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1532428953, now seen corresponding path program 1 times [2021-11-25 17:57:09,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:09,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901797622] [2021-11-25 17:57:09,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:09,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-11-25 17:57:09,920 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:09,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901797622] [2021-11-25 17:57:09,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901797622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:09,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:09,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:57:09,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133258587] [2021-11-25 17:57:09,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:09,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:57:09,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:09,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:57:09,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:57:09,923 INFO L87 Difference]: Start difference. First operand 56780 states and 82638 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 17:57:12,047 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:57:16,778 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:57:17,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:17,452 INFO L93 Difference]: Finished difference Result 87665 states and 127561 transitions. [2021-11-25 17:57:17,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:57:17,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 203 [2021-11-25 17:57:17,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:17,612 INFO L225 Difference]: With dead ends: 87665 [2021-11-25 17:57:17,612 INFO L226 Difference]: Without dead ends: 30909 [2021-11-25 17:57:17,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:57:17,808 INFO L933 BasicCegarLoop]: 2553 mSDtfsCounter, 5 mSDsluCounter, 2749 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5103 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:17,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 5103 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 403 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-25 17:57:17,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30909 states. [2021-11-25 17:57:19,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30909 to 30897. [2021-11-25 17:57:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30897 states, 19327 states have (on average 1.3491488591090184) internal successors, (26075), 20372 states have internal predecessors, (26075), 9387 states have call successors, (9387), 2183 states have call predecessors, (9387), 2182 states have return successors, (9475), 8853 states have call predecessors, (9475), 9386 states have call successors, (9475) [2021-11-25 17:57:19,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30897 states to 30897 states and 44937 transitions. [2021-11-25 17:57:19,436 INFO L78 Accepts]: Start accepts. Automaton has 30897 states and 44937 transitions. Word has length 203 [2021-11-25 17:57:19,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:19,437 INFO L470 AbstractCegarLoop]: Abstraction has 30897 states and 44937 transitions. [2021-11-25 17:57:19,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 17:57:19,440 INFO L276 IsEmpty]: Start isEmpty. Operand 30897 states and 44937 transitions. [2021-11-25 17:57:19,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-25 17:57:19,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:19,460 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:57:19,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 17:57:19,461 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:57:19,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:19,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1853120898, now seen corresponding path program 1 times [2021-11-25 17:57:19,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:19,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630322696] [2021-11-25 17:57:19,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:19,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:20,243 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-11-25 17:57:20,243 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:20,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630322696] [2021-11-25 17:57:20,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630322696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:20,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:20,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:57:20,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972935061] [2021-11-25 17:57:20,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:20,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:57:20,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:20,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:57:20,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:57:20,247 INFO L87 Difference]: Start difference. First operand 30897 states and 44937 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-25 17:57:22,372 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:57:26,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:57:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:28,785 INFO L93 Difference]: Finished difference Result 85436 states and 124164 transitions. [2021-11-25 17:57:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:57:28,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2021-11-25 17:57:28,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:29,289 INFO L225 Difference]: With dead ends: 85436 [2021-11-25 17:57:29,289 INFO L226 Difference]: Without dead ends: 54565 [2021-11-25 17:57:29,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:57:29,382 INFO L933 BasicCegarLoop]: 4230 mSDtfsCounter, 2444 mSDsluCounter, 2738 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2444 SdHoareTripleChecker+Valid, 6770 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:29,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2444 Valid, 6770 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 530 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2021-11-25 17:57:29,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54565 states. [2021-11-25 17:57:31,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54565 to 54549. [2021-11-25 17:57:31,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54549 states, 34127 states have (on average 1.3503384417030504) internal successors, (46083), 35958 states have internal predecessors, (46083), 16518 states have call successors, (16518), 3904 states have call predecessors, (16518), 3903 states have return successors, (16627), 15587 states have call predecessors, (16627), 16517 states have call successors, (16627) [2021-11-25 17:57:31,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54549 states to 54549 states and 79228 transitions. [2021-11-25 17:57:31,727 INFO L78 Accepts]: Start accepts. Automaton has 54549 states and 79228 transitions. Word has length 221 [2021-11-25 17:57:31,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:31,728 INFO L470 AbstractCegarLoop]: Abstraction has 54549 states and 79228 transitions. [2021-11-25 17:57:31,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-25 17:57:31,729 INFO L276 IsEmpty]: Start isEmpty. Operand 54549 states and 79228 transitions. [2021-11-25 17:57:32,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-25 17:57:32,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:32,272 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:57:32,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 17:57:32,274 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:57:32,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:32,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1967700512, now seen corresponding path program 1 times [2021-11-25 17:57:32,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:32,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841306408] [2021-11-25 17:57:32,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:32,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:32,547 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 17:57:32,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200060954] [2021-11-25 17:57:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:32,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:57:32,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:57:32,553 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:57:32,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 17:57:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:34,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 5790 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 17:57:34,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:57:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2021-11-25 17:57:35,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:57:35,082 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:35,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841306408] [2021-11-25 17:57:35,082 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 17:57:35,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200060954] [2021-11-25 17:57:35,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200060954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:57:35,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:57:35,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:57:35,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284218124] [2021-11-25 17:57:35,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:35,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:57:35,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:35,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:57:35,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:57:35,086 INFO L87 Difference]: Start difference. First operand 54549 states and 79228 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-25 17:57:37,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:57:41,012 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:57:43,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:57:43,156 INFO L93 Difference]: Finished difference Result 100230 states and 146356 transitions. [2021-11-25 17:57:43,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:57:43,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 282 [2021-11-25 17:57:43,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:57:43,500 INFO L225 Difference]: With dead ends: 100230 [2021-11-25 17:57:43,500 INFO L226 Difference]: Without dead ends: 54645 [2021-11-25 17:57:43,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:57:43,692 INFO L933 BasicCegarLoop]: 2553 mSDtfsCounter, 4 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5100 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:57:43,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5100 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 402 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2021-11-25 17:57:43,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54645 states. [2021-11-25 17:57:46,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54645 to 54597. [2021-11-25 17:57:46,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54597 states, 34169 states have (on average 1.3499078111738712) internal successors, (46125), 36006 states have internal predecessors, (46125), 16518 states have call successors, (16518), 3904 states have call predecessors, (16518), 3909 states have return successors, (16633), 15587 states have call predecessors, (16633), 16517 states have call successors, (16633) [2021-11-25 17:57:46,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54597 states to 54597 states and 79276 transitions. [2021-11-25 17:57:46,740 INFO L78 Accepts]: Start accepts. Automaton has 54597 states and 79276 transitions. Word has length 282 [2021-11-25 17:57:46,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:57:46,741 INFO L470 AbstractCegarLoop]: Abstraction has 54597 states and 79276 transitions. [2021-11-25 17:57:46,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-25 17:57:46,742 INFO L276 IsEmpty]: Start isEmpty. Operand 54597 states and 79276 transitions. [2021-11-25 17:57:46,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-25 17:57:46,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:57:46,801 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:57:46,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-25 17:57:47,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:57:47,017 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:57:47,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:57:47,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1559391177, now seen corresponding path program 1 times [2021-11-25 17:57:47,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:57:47,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678826578] [2021-11-25 17:57:47,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:47,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:57:47,318 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 17:57:47,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499414934] [2021-11-25 17:57:47,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:57:47,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:57:47,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:57:47,325 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:57:47,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 17:57:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:57:49,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 5798 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 17:57:49,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:57:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 558 proven. 4 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2021-11-25 17:57:50,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:57:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1121 trivial. 0 not checked. [2021-11-25 17:57:51,917 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:57:51,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678826578] [2021-11-25 17:57:51,918 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 17:57:51,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499414934] [2021-11-25 17:57:51,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499414934] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 17:57:51,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 17:57:51,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-25 17:57:51,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277275143] [2021-11-25 17:57:51,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:57:51,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 17:57:51,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:57:51,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 17:57:51,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:57:51,920 INFO L87 Difference]: Start difference. First operand 54597 states and 79276 transitions. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 5 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (39), 5 states have call predecessors, (39), 5 states have call successors, (39) [2021-11-25 17:57:54,012 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:58:00,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:58:11,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:11,396 INFO L93 Difference]: Finished difference Result 117262 states and 171856 transitions. [2021-11-25 17:58:11,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 17:58:11,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 5 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (39), 5 states have call predecessors, (39), 5 states have call successors, (39) Word has length 283 [2021-11-25 17:58:11,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:11,829 INFO L225 Difference]: With dead ends: 117262 [2021-11-25 17:58:11,829 INFO L226 Difference]: Without dead ends: 63095 [2021-11-25 17:58:12,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:58:12,061 INFO L933 BasicCegarLoop]: 2947 mSDtfsCounter, 3000 mSDsluCounter, 3572 mSDsCounter, 0 mSdLazyCounter, 5153 mSolverCounterSat, 716 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3396 SdHoareTripleChecker+Valid, 6237 SdHoareTripleChecker+Invalid, 5871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 716 IncrementalHoareTripleChecker+Valid, 5153 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:12,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3396 Valid, 6237 Invalid, 5871 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [716 Valid, 5153 Invalid, 2 Unknown, 0 Unchecked, 16.7s Time] [2021-11-25 17:58:12,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63095 states. [2021-11-25 17:58:14,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63095 to 55857. [2021-11-25 17:58:14,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55857 states, 34955 states have (on average 1.3480474896295236) internal successors, (47121), 36876 states have internal predecessors, (47121), 16926 states have call successors, (16926), 3904 states have call predecessors, (16926), 3975 states have return successors, (17221), 16037 states have call predecessors, (17221), 16925 states have call successors, (17221) [2021-11-25 17:58:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55857 states to 55857 states and 81268 transitions. [2021-11-25 17:58:15,222 INFO L78 Accepts]: Start accepts. Automaton has 55857 states and 81268 transitions. Word has length 283 [2021-11-25 17:58:15,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:15,223 INFO L470 AbstractCegarLoop]: Abstraction has 55857 states and 81268 transitions. [2021-11-25 17:58:15,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 5 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (39), 5 states have call predecessors, (39), 5 states have call successors, (39) [2021-11-25 17:58:15,223 INFO L276 IsEmpty]: Start isEmpty. Operand 55857 states and 81268 transitions. [2021-11-25 17:58:15,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-25 17:58:15,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:15,596 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:15,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 17:58:15,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 17:58:15,809 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:58:15,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:15,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1441720354, now seen corresponding path program 1 times [2021-11-25 17:58:15,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:15,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253005054] [2021-11-25 17:58:15,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:15,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:16,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked. [2021-11-25 17:58:16,432 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:16,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253005054] [2021-11-25 17:58:16,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253005054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:16,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:16,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:58:16,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103173223] [2021-11-25 17:58:16,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:16,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:58:16,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:16,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:58:16,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:58:16,437 INFO L87 Difference]: Start difference. First operand 55857 states and 81268 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-25 17:58:18,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:58:22,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:58:25,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:25,217 INFO L93 Difference]: Finished difference Result 125085 states and 184872 transitions. [2021-11-25 17:58:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:58:25,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 287 [2021-11-25 17:58:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:25,521 INFO L225 Difference]: With dead ends: 125085 [2021-11-25 17:58:25,521 INFO L226 Difference]: Without dead ends: 69730 [2021-11-25 17:58:25,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:58:25,704 INFO L933 BasicCegarLoop]: 3171 mSDtfsCounter, 684 mSDsluCounter, 2704 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 5692 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:25,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [880 Valid, 5692 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 434 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2021-11-25 17:58:25,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69730 states. [2021-11-25 17:58:28,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69730 to 55781. [2021-11-25 17:58:28,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55781 states, 34917 states have (on average 1.3478534811123521) internal successors, (47063), 36838 states have internal predecessors, (47063), 16903 states have call successors, (16903), 3889 states have call predecessors, (16903), 3960 states have return successors, (17198), 16014 states have call predecessors, (17198), 16902 states have call successors, (17198) [2021-11-25 17:58:29,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55781 states to 55781 states and 81164 transitions. [2021-11-25 17:58:29,087 INFO L78 Accepts]: Start accepts. Automaton has 55781 states and 81164 transitions. Word has length 287 [2021-11-25 17:58:29,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:29,088 INFO L470 AbstractCegarLoop]: Abstraction has 55781 states and 81164 transitions. [2021-11-25 17:58:29,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-25 17:58:29,089 INFO L276 IsEmpty]: Start isEmpty. Operand 55781 states and 81164 transitions. [2021-11-25 17:58:29,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-11-25 17:58:29,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:29,129 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:29,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 17:58:29,129 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:58:29,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:29,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1744851777, now seen corresponding path program 1 times [2021-11-25 17:58:29,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:29,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864053694] [2021-11-25 17:58:29,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:29,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:29,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1231 trivial. 0 not checked. [2021-11-25 17:58:29,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:29,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864053694] [2021-11-25 17:58:29,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864053694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:29,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:29,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:58:29,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465562056] [2021-11-25 17:58:29,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:29,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:58:29,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:29,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:58:29,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:58:29,699 INFO L87 Difference]: Start difference. First operand 55781 states and 81164 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-25 17:58:31,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:58:37,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:58:41,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:41,349 INFO L93 Difference]: Finished difference Result 120456 states and 178856 transitions. [2021-11-25 17:58:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:58:41,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 289 [2021-11-25 17:58:41,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:41,659 INFO L225 Difference]: With dead ends: 120456 [2021-11-25 17:58:41,659 INFO L226 Difference]: Without dead ends: 73633 [2021-11-25 17:58:41,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:58:41,807 INFO L933 BasicCegarLoop]: 3917 mSDtfsCounter, 1600 mSDsluCounter, 7096 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 246 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1851 SdHoareTripleChecker+Valid, 10525 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:41,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1851 Valid, 10525 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 816 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2021-11-25 17:58:41,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73633 states. [2021-11-25 17:58:44,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73633 to 55783. [2021-11-25 17:58:44,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55783 states, 34919 states have (on average 1.3478335576620177) internal successors, (47065), 36840 states have internal predecessors, (47065), 16903 states have call successors, (16903), 3889 states have call predecessors, (16903), 3960 states have return successors, (17198), 16014 states have call predecessors, (17198), 16902 states have call successors, (17198) [2021-11-25 17:58:45,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55783 states to 55783 states and 81166 transitions. [2021-11-25 17:58:45,149 INFO L78 Accepts]: Start accepts. Automaton has 55783 states and 81166 transitions. Word has length 289 [2021-11-25 17:58:45,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:58:45,150 INFO L470 AbstractCegarLoop]: Abstraction has 55783 states and 81166 transitions. [2021-11-25 17:58:45,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-25 17:58:45,150 INFO L276 IsEmpty]: Start isEmpty. Operand 55783 states and 81166 transitions. [2021-11-25 17:58:45,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-11-25 17:58:45,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:45,187 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:58:45,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 17:58:45,188 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:58:45,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:45,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1832963043, now seen corresponding path program 1 times [2021-11-25 17:58:45,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:45,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578122194] [2021-11-25 17:58:45,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:45,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1147 trivial. 0 not checked. [2021-11-25 17:58:46,309 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:46,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578122194] [2021-11-25 17:58:46,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578122194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:46,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:46,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:58:46,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460573366] [2021-11-25 17:58:46,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:46,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:58:46,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:46,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:58:46,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:58:46,313 INFO L87 Difference]: Start difference. First operand 55783 states and 81166 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-25 17:58:48,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:58:51,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:58:56,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:58:56,317 INFO L93 Difference]: Finished difference Result 101744 states and 148832 transitions. [2021-11-25 17:58:56,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:58:56,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 291 [2021-11-25 17:58:56,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:58:56,780 INFO L225 Difference]: With dead ends: 101744 [2021-11-25 17:58:56,780 INFO L226 Difference]: Without dead ends: 101738 [2021-11-25 17:58:56,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:58:56,852 INFO L933 BasicCegarLoop]: 3279 mSDtfsCounter, 2624 mSDsluCounter, 6257 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2624 SdHoareTripleChecker+Valid, 9136 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:58:56,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2624 Valid, 9136 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 634 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2021-11-25 17:58:56,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101738 states. [2021-11-25 17:59:01,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101738 to 101618. [2021-11-25 17:59:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101618 states, 63532 states have (on average 1.3476200969590129) internal successors, (85617), 66991 states have internal predecessors, (85617), 30866 states have call successors, (30866), 7112 states have call predecessors, (30866), 7219 states have return successors, (32142), 29239 states have call predecessors, (32142), 30865 states have call successors, (32142) [2021-11-25 17:59:02,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101618 states to 101618 states and 148625 transitions. [2021-11-25 17:59:02,577 INFO L78 Accepts]: Start accepts. Automaton has 101618 states and 148625 transitions. Word has length 291 [2021-11-25 17:59:02,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:02,578 INFO L470 AbstractCegarLoop]: Abstraction has 101618 states and 148625 transitions. [2021-11-25 17:59:02,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-25 17:59:02,579 INFO L276 IsEmpty]: Start isEmpty. Operand 101618 states and 148625 transitions. [2021-11-25 17:59:03,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2021-11-25 17:59:03,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:03,261 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 7, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:03,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 17:59:03,262 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:59:03,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:03,268 INFO L85 PathProgramCache]: Analyzing trace with hash 125410630, now seen corresponding path program 1 times [2021-11-25 17:59:03,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:03,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878818156] [2021-11-25 17:59:03,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:03,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:03,628 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 17:59:03,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384358183] [2021-11-25 17:59:03,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:03,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:59:03,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:59:03,630 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:59:03,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41037a92-22ef-48e6-8640-811249d497bd/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 17:59:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:06,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 7519 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 17:59:06,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:59:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2021-11-25 17:59:07,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:59:07,583 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:07,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878818156] [2021-11-25 17:59:07,583 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 17:59:07,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384358183] [2021-11-25 17:59:07,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384358183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:07,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:07,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:59:07,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377966645] [2021-11-25 17:59:07,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:07,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:59:07,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:07,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:59:07,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:59:07,587 INFO L87 Difference]: Start difference. First operand 101618 states and 148625 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 3 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2021-11-25 17:59:09,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:59:12,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []