./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:58:21,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:58:21,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:58:21,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:58:21,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:58:21,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:58:21,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:58:21,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:58:21,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:58:21,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:58:21,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:58:21,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:58:21,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:58:21,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:58:21,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:58:21,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:58:21,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:58:21,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:58:21,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:58:21,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:58:21,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:58:21,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:58:21,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:58:21,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:58:21,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:58:21,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:58:21,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:58:21,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:58:21,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:58:21,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:58:21,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:58:21,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:58:21,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:58:21,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:58:21,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:58:21,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:58:21,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:58:21,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:58:21,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:58:21,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:58:21,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:58:21,536 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 22:58:21,590 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:58:21,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:58:21,591 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:58:21,598 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:58:21,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:58:21,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:58:21,600 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:58:21,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:58:21,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:58:21,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:58:21,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:58:21,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:58:21,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:58:21,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:58:21,603 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:58:21,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:58:21,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:58:21,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:58:21,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:58:21,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:58:21,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:58:21,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:58:21,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:58:21,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:58:21,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:58:21,606 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:58:21,606 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:58:21,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:58:21,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:58:21,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc [2021-11-02 22:58:21,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:58:21,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:58:21,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:58:21,930 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:58:21,931 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:58:21,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2021-11-02 22:58:22,026 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/data/ec54baace/3737caef93514fee9de0fba6f72bbe91/FLAG4b0a307f8 [2021-11-02 22:58:23,019 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:58:23,021 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2021-11-02 22:58:23,088 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/data/ec54baace/3737caef93514fee9de0fba6f72bbe91/FLAG4b0a307f8 [2021-11-02 22:58:23,429 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/data/ec54baace/3737caef93514fee9de0fba6f72bbe91 [2021-11-02 22:58:23,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:58:23,435 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:58:23,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:58:23,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:58:23,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:58:23,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:58:23" (1/1) ... [2021-11-02 22:58:23,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65eb4d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:58:23, skipping insertion in model container [2021-11-02 22:58:23,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:58:23" (1/1) ... [2021-11-02 22:58:23,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:58:23,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:58:24,644 WARN L228 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_ee95fada-3bd0-4189-b1ff-d40585426690/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i[158583,158596] [2021-11-02 22:58:25,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:58:25,483 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:58:25,704 WARN L228 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_ee95fada-3bd0-4189-b1ff-d40585426690/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i[158583,158596] [2021-11-02 22:58:25,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:58:26,089 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:58:26,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:58:26 WrapperNode [2021-11-02 22:58:26,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:58:26,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:58:26,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:58:26,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:58:26,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:58:26" (1/1) ... [2021-11-02 22:58:26,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:58:26" (1/1) ... [2021-11-02 22:58:26,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:58:26,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:58:26,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:58:26,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:58:26,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:58:26" (1/1) ... [2021-11-02 22:58:26,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:58:26" (1/1) ... [2021-11-02 22:58:26,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:58:26" (1/1) ... [2021-11-02 22:58:26,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:58:26" (1/1) ... [2021-11-02 22:58:27,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:58:26" (1/1) ... [2021-11-02 22:58:27,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:58:26" (1/1) ... [2021-11-02 22:58:27,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:58:26" (1/1) ... [2021-11-02 22:58:27,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:58:27,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:58:27,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:58:27,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:58:27,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:58:26" (1/1) ... [2021-11-02 22:58:27,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:58:27,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:58:27,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:58:27,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:58:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 22:58:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 22:58:27,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:58:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:58:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:58:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 22:58:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 22:58:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 22:58:27,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:58:27,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:58:27,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:58:27,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:58:27,984 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 22:58:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-02 22:58:27,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-02 22:58:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_open [2021-11-02 22:58:27,985 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_open [2021-11-02 22:58:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:58:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_close [2021-11-02 22:58:27,986 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_close [2021-11-02 22:58:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:58:27,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:58:52,112 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:58:52,113 INFO L299 CfgBuilder]: Removed 2489 assume(true) statements. [2021-11-02 22:58:52,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:58:52 BoogieIcfgContainer [2021-11-02 22:58:52,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:58:52,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:58:52,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:58:52,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:58:52,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:58:23" (1/3) ... [2021-11-02 22:58:52,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303eb0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:58:52, skipping insertion in model container [2021-11-02 22:58:52,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:58:26" (2/3) ... [2021-11-02 22:58:52,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303eb0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:58:52, skipping insertion in model container [2021-11-02 22:58:52,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:58:52" (3/3) ... [2021-11-02 22:58:52,129 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2021-11-02 22:58:52,135 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:58:52,136 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 22:58:52,208 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:58:52,214 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:58:52,215 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 22:58:52,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 2940 states, 2927 states have (on average 1.490946361462248) internal successors, (4364), 2928 states have internal predecessors, (4364), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-02 22:58:52,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-02 22:58:52,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:52,300 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:52,300 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:58:52,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:52,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1824939026, now seen corresponding path program 1 times [2021-11-02 22:58:52,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:58:52,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63257097] [2021-11-02 22:58:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:52,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:58:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:53,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:58:53,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63257097] [2021-11-02 22:58:53,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63257097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:53,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:53,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:58:53,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900338825] [2021-11-02 22:58:53,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:58:53,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:58:53,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:58:53,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:58:53,270 INFO L87 Difference]: Start difference. First operand has 2940 states, 2927 states have (on average 1.490946361462248) internal successors, (4364), 2928 states have internal predecessors, (4364), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:55,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:55,853 INFO L93 Difference]: Finished difference Result 8754 states and 13070 transitions. [2021-11-02 22:58:55,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:58:55,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-02 22:58:55,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:55,907 INFO L225 Difference]: With dead ends: 8754 [2021-11-02 22:58:55,907 INFO L226 Difference]: Without dead ends: 5807 [2021-11-02 22:58:55,924 INFO L786 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 [2021-11-02 22:58:55,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5807 states. [2021-11-02 22:58:56,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5807 to 5807. [2021-11-02 22:58:56,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5807 states, 5784 states have (on average 1.4043914246196403) internal successors, (8123), 5784 states have internal predecessors, (8123), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-02 22:58:56,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5807 states to 5807 states and 8155 transitions. [2021-11-02 22:58:56,222 INFO L78 Accepts]: Start accepts. Automaton has 5807 states and 8155 transitions. Word has length 23 [2021-11-02 22:58:56,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:56,223 INFO L470 AbstractCegarLoop]: Abstraction has 5807 states and 8155 transitions. [2021-11-02 22:58:56,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:56,224 INFO L276 IsEmpty]: Start isEmpty. Operand 5807 states and 8155 transitions. [2021-11-02 22:58:56,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-02 22:58:56,233 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:56,233 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:56,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:58:56,234 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:58:56,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:56,237 INFO L85 PathProgramCache]: Analyzing trace with hash 666202280, now seen corresponding path program 1 times [2021-11-02 22:58:56,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:58:56,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005784974] [2021-11-02 22:58:56,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:56,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:58:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:56,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:56,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:58:56,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005784974] [2021-11-02 22:58:56,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005784974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:56,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:56,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:58:56,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199226397] [2021-11-02 22:58:56,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:58:56,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:58:56,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:58:56,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:58:56,633 INFO L87 Difference]: Start difference. First operand 5807 states and 8155 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:58,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:58,972 INFO L93 Difference]: Finished difference Result 17383 states and 24454 transitions. [2021-11-02 22:58:58,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:58:58,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-02 22:58:58,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:59,066 INFO L225 Difference]: With dead ends: 17383 [2021-11-02 22:58:59,067 INFO L226 Difference]: Without dead ends: 11586 [2021-11-02 22:58:59,087 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:58:59,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11586 states. [2021-11-02 22:58:59,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11586 to 11290. [2021-11-02 22:58:59,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11290 states, 11245 states have (on average 1.4038239217429969) internal successors, (15786), 11245 states have internal predecessors, (15786), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-02 22:58:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11290 states to 11290 states and 15866 transitions. [2021-11-02 22:58:59,562 INFO L78 Accepts]: Start accepts. Automaton has 11290 states and 15866 transitions. Word has length 25 [2021-11-02 22:58:59,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:59,563 INFO L470 AbstractCegarLoop]: Abstraction has 11290 states and 15866 transitions. [2021-11-02 22:58:59,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:59,563 INFO L276 IsEmpty]: Start isEmpty. Operand 11290 states and 15866 transitions. [2021-11-02 22:58:59,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 22:58:59,580 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:59,580 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-02 22:58:59,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:58:59,581 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:58:59,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:59,582 INFO L85 PathProgramCache]: Analyzing trace with hash 555830267, now seen corresponding path program 1 times [2021-11-02 22:58:59,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:58:59,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109166028] [2021-11-02 22:58:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:59,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:58:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:59,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:59,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:58:59,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109166028] [2021-11-02 22:58:59,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109166028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:59,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:59,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:58:59,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138078986] [2021-11-02 22:58:59,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:58:59,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:58:59,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:58:59,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:58:59,970 INFO L87 Difference]: Start difference. First operand 11290 states and 15866 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:01,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:59:01,684 INFO L93 Difference]: Finished difference Result 44194 states and 62512 transitions. [2021-11-02 22:59:01,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:59:01,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-02 22:59:01,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:59:01,871 INFO L225 Difference]: With dead ends: 44194 [2021-11-02 22:59:01,872 INFO L226 Difference]: Without dead ends: 32922 [2021-11-02 22:59:01,917 INFO L786 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 [2021-11-02 22:59:01,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32922 states. [2021-11-02 22:59:02,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32922 to 11458. [2021-11-02 22:59:02,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11458 states, 11413 states have (on average 1.3978796109699465) internal successors, (15954), 11413 states have internal predecessors, (15954), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-02 22:59:02,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11458 states to 11458 states and 16034 transitions. [2021-11-02 22:59:02,638 INFO L78 Accepts]: Start accepts. Automaton has 11458 states and 16034 transitions. Word has length 66 [2021-11-02 22:59:02,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:59:02,638 INFO L470 AbstractCegarLoop]: Abstraction has 11458 states and 16034 transitions. [2021-11-02 22:59:02,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:02,639 INFO L276 IsEmpty]: Start isEmpty. Operand 11458 states and 16034 transitions. [2021-11-02 22:59:02,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:59:02,653 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:59:02,653 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-02 22:59:02,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:59:02,654 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:59:02,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:59:02,654 INFO L85 PathProgramCache]: Analyzing trace with hash -196678620, now seen corresponding path program 1 times [2021-11-02 22:59:02,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:59:02,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361166726] [2021-11-02 22:59:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:59:02,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:59:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:59:03,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:03,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:59:03,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361166726] [2021-11-02 22:59:03,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361166726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:59:03,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:59:03,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:59:03,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755202872] [2021-11-02 22:59:03,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:59:03,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:59:03,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:59:03,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:59:03,145 INFO L87 Difference]: Start difference. First operand 11458 states and 16034 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:03,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:59:03,595 INFO L93 Difference]: Finished difference Result 22958 states and 32127 transitions. [2021-11-02 22:59:03,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:59:03,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-02 22:59:03,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:59:03,645 INFO L225 Difference]: With dead ends: 22958 [2021-11-02 22:59:03,646 INFO L226 Difference]: Without dead ends: 11518 [2021-11-02 22:59:03,678 INFO L786 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 [2021-11-02 22:59:03,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11518 states. [2021-11-02 22:59:04,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11518 to 11478. [2021-11-02 22:59:04,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11478 states, 11433 states have (on average 1.3971835913583486) internal successors, (15974), 11433 states have internal predecessors, (15974), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-02 22:59:04,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11478 states to 11478 states and 16054 transitions. [2021-11-02 22:59:04,146 INFO L78 Accepts]: Start accepts. Automaton has 11478 states and 16054 transitions. Word has length 69 [2021-11-02 22:59:04,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:59:04,148 INFO L470 AbstractCegarLoop]: Abstraction has 11478 states and 16054 transitions. [2021-11-02 22:59:04,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:04,148 INFO L276 IsEmpty]: Start isEmpty. Operand 11478 states and 16054 transitions. [2021-11-02 22:59:04,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:59:04,165 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:59:04,165 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-02 22:59:04,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:59:04,166 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:59:04,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:59:04,167 INFO L85 PathProgramCache]: Analyzing trace with hash 660079663, now seen corresponding path program 1 times [2021-11-02 22:59:04,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:59:04,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386162632] [2021-11-02 22:59:04,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:59:04,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:59:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:59:04,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:04,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:59:04,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386162632] [2021-11-02 22:59:04,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386162632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:59:04,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:59:04,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:59:04,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761313122] [2021-11-02 22:59:04,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:59:04,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:59:04,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:59:04,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:59:04,521 INFO L87 Difference]: Start difference. First operand 11478 states and 16054 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:05,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:59:05,885 INFO L93 Difference]: Finished difference Result 44898 states and 62958 transitions. [2021-11-02 22:59:05,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:59:05,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-02 22:59:05,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:59:06,025 INFO L225 Difference]: With dead ends: 44898 [2021-11-02 22:59:06,026 INFO L226 Difference]: Without dead ends: 33438 [2021-11-02 22:59:06,073 INFO L786 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 [2021-11-02 22:59:06,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33438 states. [2021-11-02 22:59:06,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33438 to 11510. [2021-11-02 22:59:06,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11510 states, 11465 states have (on average 1.3960750109027475) internal successors, (16006), 11465 states have internal predecessors, (16006), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-02 22:59:06,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11510 states to 11510 states and 16086 transitions. [2021-11-02 22:59:06,953 INFO L78 Accepts]: Start accepts. Automaton has 11510 states and 16086 transitions. Word has length 69 [2021-11-02 22:59:06,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:59:06,954 INFO L470 AbstractCegarLoop]: Abstraction has 11510 states and 16086 transitions. [2021-11-02 22:59:06,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:06,954 INFO L276 IsEmpty]: Start isEmpty. Operand 11510 states and 16086 transitions. [2021-11-02 22:59:06,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 22:59:06,970 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:59:06,971 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-02 22:59:06,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:59:06,972 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:59:06,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:59:06,976 INFO L85 PathProgramCache]: Analyzing trace with hash -436548035, now seen corresponding path program 1 times [2021-11-02 22:59:06,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:59:06,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636751661] [2021-11-02 22:59:06,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:59:06,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:59:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:59:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:07,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:59:07,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636751661] [2021-11-02 22:59:07,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636751661] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:59:07,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325317122] [2021-11-02 22:59:07,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:59:07,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:59:07,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:59:07,380 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:59:07,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:59:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:59:08,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:59:08,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:59:08,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:59:08,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325317122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:59:08,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:59:08,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 22:59:08,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116747137] [2021-11-02 22:59:08,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:59:08,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:59:08,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:59:08,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:59:08,997 INFO L87 Difference]: Start difference. First operand 11510 states and 16086 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:10,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:59:10,054 INFO L93 Difference]: Finished difference Result 31898 states and 44652 transitions. [2021-11-02 22:59:10,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:59:10,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-02 22:59:10,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:59:10,126 INFO L225 Difference]: With dead ends: 31898 [2021-11-02 22:59:10,126 INFO L226 Difference]: Without dead ends: 20406 [2021-11-02 22:59:10,151 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:59:10,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20406 states. [2021-11-02 22:59:10,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20406 to 11526. [2021-11-02 22:59:10,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11526 states, 11481 states have (on average 1.3955230380628865) internal successors, (16022), 11481 states have internal predecessors, (16022), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-02 22:59:10,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11526 states to 11526 states and 16102 transitions. [2021-11-02 22:59:10,718 INFO L78 Accepts]: Start accepts. Automaton has 11526 states and 16102 transitions. Word has length 72 [2021-11-02 22:59:10,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:59:10,719 INFO L470 AbstractCegarLoop]: Abstraction has 11526 states and 16102 transitions. [2021-11-02 22:59:10,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:10,719 INFO L276 IsEmpty]: Start isEmpty. Operand 11526 states and 16102 transitions. [2021-11-02 22:59:10,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 22:59:10,734 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:59:10,734 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-02 22:59:10,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:59:10,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:59:10,949 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:59:10,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:59:10,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1725726798, now seen corresponding path program 1 times [2021-11-02 22:59:10,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:59:10,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459875552] [2021-11-02 22:59:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:59:10,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:59:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:59:11,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:11,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:59:11,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459875552] [2021-11-02 22:59:11,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459875552] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:59:11,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876357566] [2021-11-02 22:59:11,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:59:11,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:59:11,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:59:11,272 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:59:11,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:59:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:59:12,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 2757 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:59:12,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:59:12,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:12,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876357566] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:59:12,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:59:12,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-02 22:59:12,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533460452] [2021-11-02 22:59:12,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:59:12,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:59:12,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:59:12,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:59:12,821 INFO L87 Difference]: Start difference. First operand 11526 states and 16102 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:13,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:59:13,332 INFO L93 Difference]: Finished difference Result 23134 states and 32303 transitions. [2021-11-02 22:59:13,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:59:13,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-02 22:59:13,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:59:13,379 INFO L225 Difference]: With dead ends: 23134 [2021-11-02 22:59:13,379 INFO L226 Difference]: Without dead ends: 11626 [2021-11-02 22:59:13,404 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:59:13,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11626 states. [2021-11-02 22:59:13,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11626 to 11586. [2021-11-02 22:59:13,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11586 states, 11541 states have (on average 1.3934667706437918) internal successors, (16082), 11541 states have internal predecessors, (16082), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-02 22:59:14,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11586 states to 11586 states and 16162 transitions. [2021-11-02 22:59:14,015 INFO L78 Accepts]: Start accepts. Automaton has 11586 states and 16162 transitions. Word has length 75 [2021-11-02 22:59:14,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:59:14,015 INFO L470 AbstractCegarLoop]: Abstraction has 11586 states and 16162 transitions. [2021-11-02 22:59:14,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 11586 states and 16162 transitions. [2021-11-02 22:59:14,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 22:59:14,036 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:59:14,037 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-02 22:59:14,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:59:14,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-02 22:59:14,260 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:59:14,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:59:14,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1409683414, now seen corresponding path program 1 times [2021-11-02 22:59:14,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:59:14,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523656314] [2021-11-02 22:59:14,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:59:14,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:59:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:59:14,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:14,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:59:14,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523656314] [2021-11-02 22:59:14,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523656314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:59:14,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:59:14,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:59:14,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112251078] [2021-11-02 22:59:14,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:59:14,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:59:14,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:59:14,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:59:14,579 INFO L87 Difference]: Start difference. First operand 11586 states and 16162 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:15,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:59:15,807 INFO L93 Difference]: Finished difference Result 31010 states and 43284 transitions. [2021-11-02 22:59:15,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:59:15,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-02 22:59:15,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:59:15,886 INFO L225 Difference]: With dead ends: 31010 [2021-11-02 22:59:15,886 INFO L226 Difference]: Without dead ends: 19442 [2021-11-02 22:59:15,919 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:59:15,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19442 states. [2021-11-02 22:59:16,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19442 to 12086. [2021-11-02 22:59:16,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12086 states, 12041 states have (on average 1.3912465742048004) internal successors, (16752), 12041 states have internal predecessors, (16752), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-02 22:59:16,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12086 states to 12086 states and 16832 transitions. [2021-11-02 22:59:16,654 INFO L78 Accepts]: Start accepts. Automaton has 12086 states and 16832 transitions. Word has length 77 [2021-11-02 22:59:16,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:59:16,656 INFO L470 AbstractCegarLoop]: Abstraction has 12086 states and 16832 transitions. [2021-11-02 22:59:16,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:16,657 INFO L276 IsEmpty]: Start isEmpty. Operand 12086 states and 16832 transitions. [2021-11-02 22:59:16,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 22:59:16,680 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:59:16,680 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-02 22:59:16,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:59:16,680 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:59:16,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:59:16,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1553880309, now seen corresponding path program 2 times [2021-11-02 22:59:16,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:59:16,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351046936] [2021-11-02 22:59:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:59:16,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:59:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:59:17,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:17,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:59:17,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351046936] [2021-11-02 22:59:17,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351046936] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:59:17,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814815995] [2021-11-02 22:59:17,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:59:17,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:59:17,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:59:17,537 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:59:17,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95fada-3bd0-4189-b1ff-d40585426690/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process