./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--wan--hdlc_x25.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aaa92a9-ced5-4d19-b530-a49405adfbc6/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aaa92a9-ced5-4d19-b530-a49405adfbc6/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aaa92a9-ced5-4d19-b530-a49405adfbc6/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aaa92a9-ced5-4d19-b530-a49405adfbc6/bin/utaipan-7li7fVZpFI/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--wan--hdlc_x25.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aaa92a9-ced5-4d19-b530-a49405adfbc6/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aaa92a9-ced5-4d19-b530-a49405adfbc6/bin/utaipan-7li7fVZpFI --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 9ca2eb28b930065096f039703bc8c545a25de7919cc90a3441476b4fab43b08c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 04:00:11,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:00:11,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:00:11,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:00:11,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:00:11,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:00:11,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:00:11,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:00:11,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:00:11,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:00:11,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:00:11,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:00:11,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:00:11,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:00:11,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:00:11,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:00:11,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:00:11,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:00:11,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:00:11,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:00:11,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:00:11,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:00:11,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:00:11,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:00:11,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:00:11,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:00:11,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:00:11,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:00:11,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:00:11,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:00:11,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:00:11,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:00:11,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:00:11,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:00:11,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:00:11,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:00:11,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:00:11,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:00:11,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:00:11,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:00:11,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:00:11,651 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aaa92a9-ced5-4d19-b530-a49405adfbc6/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 04:00:11,691 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:00:11,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:00:11,692 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:00:11,692 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:00:11,693 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:00:11,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:00:11,694 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:00:11,694 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:00:11,694 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:00:11,694 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:00:11,695 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:00:11,696 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:00:11,696 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:00:11,696 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:00:11,696 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:00:11,697 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:00:11,697 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:00:11,697 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:00:11,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:00:11,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:00:11,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:00:11,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:00:11,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:00:11,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:00:11,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:00:11,700 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:00:11,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:00:11,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:00:11,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:00:11,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:00:11,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:00:11,702 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:00:11,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:00:11,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:00:11,703 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:00:11,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:00:11,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:00:11,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:00:11,703 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_8aaa92a9-ced5-4d19-b530-a49405adfbc6/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aaa92a9-ced5-4d19-b530-a49405adfbc6/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ca2eb28b930065096f039703bc8c545a25de7919cc90a3441476b4fab43b08c [2022-11-03 04:00:11,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:00:11,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:00:11,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:00:11,993 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:00:11,993 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:00:11,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aaa92a9-ced5-4d19-b530-a49405adfbc6/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2022-11-03 04:00:12,075 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aaa92a9-ced5-4d19-b530-a49405adfbc6/bin/utaipan-7li7fVZpFI/data/e5f4a9433/4374c638e74b41ab8f80c2c7e65d5c1e/FLAG42c1c6a35 [2022-11-03 04:00:12,801 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:00:12,802 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aaa92a9-ced5-4d19-b530-a49405adfbc6/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2022-11-03 04:00:12,835 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aaa92a9-ced5-4d19-b530-a49405adfbc6/bin/utaipan-7li7fVZpFI/data/e5f4a9433/4374c638e74b41ab8f80c2c7e65d5c1e/FLAG42c1c6a35 [2022-11-03 04:00:12,935 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aaa92a9-ced5-4d19-b530-a49405adfbc6/bin/utaipan-7li7fVZpFI/data/e5f4a9433/4374c638e74b41ab8f80c2c7e65d5c1e [2022-11-03 04:00:12,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:00:12,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:00:12,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:00:12,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:00:12,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:00:12,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:00:12" (1/1) ... [2022-11-03 04:00:12,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@686c936f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:12, skipping insertion in model container [2022-11-03 04:00:12,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:00:12" (1/1) ... [2022-11-03 04:00:12,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:00:13,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:00:13,803 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_8aaa92a9-ced5-4d19-b530-a49405adfbc6/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i[152690,152703] [2022-11-03 04:00:14,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:00:14,131 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:00:14,336 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_8aaa92a9-ced5-4d19-b530-a49405adfbc6/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i[152690,152703] [2022-11-03 04:00:14,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:00:14,460 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:00:14,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:14 WrapperNode [2022-11-03 04:00:14,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:00:14,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:00:14,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:00:14,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:00:14,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:14" (1/1) ... [2022-11-03 04:00:14,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:14" (1/1) ... [2022-11-03 04:00:14,588 INFO L138 Inliner]: procedures = 110, calls = 180, calls flagged for inlining = 54, calls inlined = 43, statements flattened = 631 [2022-11-03 04:00:14,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:00:14,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:00:14,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:00:14,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:00:14,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:14" (1/1) ... [2022-11-03 04:00:14,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:14" (1/1) ... [2022-11-03 04:00:14,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:14" (1/1) ... [2022-11-03 04:00:14,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:14" (1/1) ... [2022-11-03 04:00:14,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:14" (1/1) ... [2022-11-03 04:00:14,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:14" (1/1) ... [2022-11-03 04:00:14,698 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:14" (1/1) ... [2022-11-03 04:00:14,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:14" (1/1) ... [2022-11-03 04:00:14,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:00:14,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:00:14,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:00:14,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:00:14,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:14" (1/1) ... [2022-11-03 04:00:14,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:00:14,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aaa92a9-ced5-4d19-b530-a49405adfbc6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:00:14,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aaa92a9-ced5-4d19-b530-a49405adfbc6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:00:14,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aaa92a9-ced5-4d19-b530-a49405adfbc6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:00:14,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 04:00:14,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 04:00:14,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:00:14,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 04:00:14,817 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 04:00:14,817 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-11-03 04:00:14,818 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-11-03 04:00:14,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-03 04:00:14,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-03 04:00:14,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 04:00:14,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 04:00:14,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-03 04:00:14,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-03 04:00:14,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:00:14,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 04:00:14,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 04:00:14,819 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2022-11-03 04:00:14,819 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2022-11-03 04:00:14,819 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 04:00:14,819 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 04:00:14,819 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 04:00:14,820 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 04:00:14,820 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2022-11-03 04:00:14,820 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2022-11-03 04:00:14,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 04:00:14,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2022-11-03 04:00:14,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2022-11-03 04:00:14,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:00:14,821 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2022-11-03 04:00:14,821 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2022-11-03 04:00:14,821 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2022-11-03 04:00:14,821 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2022-11-03 04:00:14,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 04:00:14,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:00:14,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:00:14,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-03 04:00:14,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-03 04:00:14,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:00:14,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 04:00:14,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2022-11-03 04:00:14,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2022-11-03 04:00:14,822 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2022-11-03 04:00:14,822 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2022-11-03 04:00:14,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:00:14,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:00:14,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:00:15,254 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:00:15,257 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:00:15,617 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 04:00:15,994 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:00:16,369 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:00:16,369 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 04:00:16,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:00:16 BoogieIcfgContainer [2022-11-03 04:00:16,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:00:16,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:00:16,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:00:16,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:00:16,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:00:12" (1/3) ... [2022-11-03 04:00:16,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0b0c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:00:16, skipping insertion in model container [2022-11-03 04:00:16,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:14" (2/3) ... [2022-11-03 04:00:16,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0b0c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:00:16, skipping insertion in model container [2022-11-03 04:00:16,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:00:16" (3/3) ... [2022-11-03 04:00:16,384 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2022-11-03 04:00:16,405 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:00:16,406 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:00:16,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:00:16,501 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e4c7f8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:00:16,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:00:16,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 114 states have (on average 1.4298245614035088) internal successors, (163), 120 states have internal predecessors, (163), 35 states have call successors, (35), 17 states have call predecessors, (35), 16 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-03 04:00:16,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 04:00:16,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:16,523 INFO L195 NwaCegarLoop]: 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] [2022-11-03 04:00:16,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:16,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:16,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1251365286, now seen corresponding path program 1 times [2022-11-03 04:00:16,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:16,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250485364] [2022-11-03 04:00:16,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:16,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:00:17,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:17,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250485364] [2022-11-03 04:00:17,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250485364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:17,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:17,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:00:17,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329261549] [2022-11-03 04:00:17,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:17,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:00:17,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:17,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:00:17,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:00:17,071 INFO L87 Difference]: Start difference. First operand has 167 states, 114 states have (on average 1.4298245614035088) internal successors, (163), 120 states have internal predecessors, (163), 35 states have call successors, (35), 17 states have call predecessors, (35), 16 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:17,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:17,463 INFO L93 Difference]: Finished difference Result 481 states and 694 transitions. [2022-11-03 04:00:17,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:00:17,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-11-03 04:00:17,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:17,478 INFO L225 Difference]: With dead ends: 481 [2022-11-03 04:00:17,478 INFO L226 Difference]: Without dead ends: 307 [2022-11-03 04:00:17,484 INFO L412 NwaCegarLoop]: 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 [2022-11-03 04:00:17,487 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 199 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:17,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 407 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:00:17,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-03 04:00:17,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2022-11-03 04:00:17,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 216 states have (on average 1.3611111111111112) internal successors, (294), 218 states have internal predecessors, (294), 60 states have call successors, (60), 31 states have call predecessors, (60), 30 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-11-03 04:00:17,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 413 transitions. [2022-11-03 04:00:17,566 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 413 transitions. Word has length 23 [2022-11-03 04:00:17,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:17,567 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 413 transitions. [2022-11-03 04:00:17,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:17,568 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 413 transitions. [2022-11-03 04:00:17,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 04:00:17,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:17,571 INFO L195 NwaCegarLoop]: 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, 1] [2022-11-03 04:00:17,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:00:17,571 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:17,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:17,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2068103764, now seen corresponding path program 1 times [2022-11-03 04:00:17,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:17,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206481931] [2022-11-03 04:00:17,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:17,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:00:17,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:17,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206481931] [2022-11-03 04:00:17,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206481931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:17,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:17,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:00:17,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972973487] [2022-11-03 04:00:17,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:17,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:00:17,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:17,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:00:17,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:00:17,801 INFO L87 Difference]: Start difference. First operand 307 states and 413 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:18,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:18,091 INFO L93 Difference]: Finished difference Result 611 states and 850 transitions. [2022-11-03 04:00:18,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:00:18,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2022-11-03 04:00:18,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:18,105 INFO L225 Difference]: With dead ends: 611 [2022-11-03 04:00:18,105 INFO L226 Difference]: Without dead ends: 606 [2022-11-03 04:00:18,107 INFO L412 NwaCegarLoop]: 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 [2022-11-03 04:00:18,114 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 200 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:18,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 623 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:00:18,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-11-03 04:00:18,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 598. [2022-11-03 04:00:18,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 419 states have (on average 1.360381861575179) internal successors, (570), 423 states have internal predecessors, (570), 118 states have call successors, (118), 61 states have call predecessors, (118), 60 states have return successors, (145), 117 states have call predecessors, (145), 117 states have call successors, (145) [2022-11-03 04:00:18,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 833 transitions. [2022-11-03 04:00:18,218 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 833 transitions. Word has length 26 [2022-11-03 04:00:18,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:18,218 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 833 transitions. [2022-11-03 04:00:18,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:18,219 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 833 transitions. [2022-11-03 04:00:18,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 04:00:18,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:18,232 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-03 04:00:18,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:00:18,232 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:18,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:18,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1111201139, now seen corresponding path program 1 times [2022-11-03 04:00:18,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:18,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961587848] [2022-11-03 04:00:18,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:18,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 04:00:18,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:18,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961587848] [2022-11-03 04:00:18,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961587848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:18,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:18,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:00:18,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150887855] [2022-11-03 04:00:18,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:18,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:00:18,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:18,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:00:18,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:00:18,320 INFO L87 Difference]: Start difference. First operand 598 states and 833 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 04:00:18,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:18,522 INFO L93 Difference]: Finished difference Result 1264 states and 1759 transitions. [2022-11-03 04:00:18,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:00:18,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 68 [2022-11-03 04:00:18,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:18,528 INFO L225 Difference]: With dead ends: 1264 [2022-11-03 04:00:18,528 INFO L226 Difference]: Without dead ends: 669 [2022-11-03 04:00:18,532 INFO L412 NwaCegarLoop]: 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 [2022-11-03 04:00:18,533 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 36 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:18,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 352 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:00:18,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-11-03 04:00:18,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 664. [2022-11-03 04:00:18,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 480 states have (on average 1.3645833333333333) internal successors, (655), 484 states have internal predecessors, (655), 120 states have call successors, (120), 64 states have call predecessors, (120), 63 states have return successors, (147), 119 states have call predecessors, (147), 119 states have call successors, (147) [2022-11-03 04:00:18,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 922 transitions. [2022-11-03 04:00:18,597 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 922 transitions. Word has length 68 [2022-11-03 04:00:18,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:18,597 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 922 transitions. [2022-11-03 04:00:18,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 04:00:18,598 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 922 transitions. [2022-11-03 04:00:18,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-03 04:00:18,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:18,602 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:18,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:00:18,602 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:18,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:18,603 INFO L85 PathProgramCache]: Analyzing trace with hash -732578664, now seen corresponding path program 1 times [2022-11-03 04:00:18,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:18,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380781149] [2022-11-03 04:00:18,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:18,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-03 04:00:18,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:18,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380781149] [2022-11-03 04:00:18,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380781149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:18,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:18,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:00:18,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544712682] [2022-11-03 04:00:18,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:18,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:00:18,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:18,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:00:18,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:00:18,768 INFO L87 Difference]: Start difference. First operand 664 states and 922 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 04:00:19,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:19,046 INFO L93 Difference]: Finished difference Result 1852 states and 2565 transitions. [2022-11-03 04:00:19,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:00:19,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2022-11-03 04:00:19,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:19,054 INFO L225 Difference]: With dead ends: 1852 [2022-11-03 04:00:19,054 INFO L226 Difference]: Without dead ends: 1201 [2022-11-03 04:00:19,056 INFO L412 NwaCegarLoop]: 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 [2022-11-03 04:00:19,057 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 181 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:19,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 376 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:00:19,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2022-11-03 04:00:19,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1196. [2022-11-03 04:00:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 864 states have (on average 1.34375) internal successors, (1161), 872 states have internal predecessors, (1161), 208 states have call successors, (208), 124 states have call predecessors, (208), 123 states have return successors, (255), 207 states have call predecessors, (255), 207 states have call successors, (255) [2022-11-03 04:00:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1624 transitions. [2022-11-03 04:00:19,148 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1624 transitions. Word has length 98 [2022-11-03 04:00:19,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:19,148 INFO L495 AbstractCegarLoop]: Abstraction has 1196 states and 1624 transitions. [2022-11-03 04:00:19,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 04:00:19,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1624 transitions. [2022-11-03 04:00:19,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-03 04:00:19,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:19,153 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:19,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:00:19,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:19,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:19,154 INFO L85 PathProgramCache]: Analyzing trace with hash 112575370, now seen corresponding path program 1 times [2022-11-03 04:00:19,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:19,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362830808] [2022-11-03 04:00:19,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:19,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-03 04:00:19,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:19,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362830808] [2022-11-03 04:00:19,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362830808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:19,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:19,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:00:19,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553551232] [2022-11-03 04:00:19,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:19,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:00:19,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:19,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:00:19,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:00:19,307 INFO L87 Difference]: Start difference. First operand 1196 states and 1624 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-03 04:00:19,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:19,485 INFO L93 Difference]: Finished difference Result 1814 states and 2537 transitions. [2022-11-03 04:00:19,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:00:19,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 98 [2022-11-03 04:00:19,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:19,492 INFO L225 Difference]: With dead ends: 1814 [2022-11-03 04:00:19,493 INFO L226 Difference]: Without dead ends: 1212 [2022-11-03 04:00:19,495 INFO L412 NwaCegarLoop]: 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 [2022-11-03 04:00:19,496 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 4 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:19,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 360 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:00:19,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2022-11-03 04:00:19,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1212. [2022-11-03 04:00:19,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 876 states have (on average 1.3390410958904109) internal successors, (1173), 888 states have internal predecessors, (1173), 208 states have call successors, (208), 124 states have call predecessors, (208), 127 states have return successors, (263), 207 states have call predecessors, (263), 207 states have call successors, (263) [2022-11-03 04:00:19,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1644 transitions. [2022-11-03 04:00:19,611 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1644 transitions. Word has length 98 [2022-11-03 04:00:19,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:19,612 INFO L495 AbstractCegarLoop]: Abstraction has 1212 states and 1644 transitions. [2022-11-03 04:00:19,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-03 04:00:19,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1644 transitions. [2022-11-03 04:00:19,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-03 04:00:19,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:19,621 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:19,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 04:00:19,621 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:19,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:19,622 INFO L85 PathProgramCache]: Analyzing trace with hash 418382135, now seen corresponding path program 1 times [2022-11-03 04:00:19,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:19,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799827498] [2022-11-03 04:00:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:19,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-03 04:00:20,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:20,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799827498] [2022-11-03 04:00:20,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799827498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:20,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:20,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 04:00:20,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791947902] [2022-11-03 04:00:20,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:20,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 04:00:20,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:20,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 04:00:20,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:00:20,120 INFO L87 Difference]: Start difference. First operand 1212 states and 1644 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 04:00:21,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:21,302 INFO L93 Difference]: Finished difference Result 2659 states and 3675 transitions. [2022-11-03 04:00:21,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 04:00:21,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2022-11-03 04:00:21,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:21,313 INFO L225 Difference]: With dead ends: 2659 [2022-11-03 04:00:21,313 INFO L226 Difference]: Without dead ends: 1460 [2022-11-03 04:00:21,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:00:21,323 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 389 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:21,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 742 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 04:00:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2022-11-03 04:00:21,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1264. [2022-11-03 04:00:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 908 states have (on average 1.3182819383259912) internal successors, (1197), 916 states have internal predecessors, (1197), 220 states have call successors, (220), 124 states have call predecessors, (220), 135 states have return successors, (251), 231 states have call predecessors, (251), 219 states have call successors, (251) [2022-11-03 04:00:21,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1668 transitions. [2022-11-03 04:00:21,440 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1668 transitions. Word has length 99 [2022-11-03 04:00:21,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:21,441 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 1668 transitions. [2022-11-03 04:00:21,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 04:00:21,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1668 transitions. [2022-11-03 04:00:21,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-03 04:00:21,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:21,448 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:21,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 04:00:21,448 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:21,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:21,449 INFO L85 PathProgramCache]: Analyzing trace with hash 890081793, now seen corresponding path program 1 times [2022-11-03 04:00:21,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:21,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699802779] [2022-11-03 04:00:21,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:21,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-03 04:00:22,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:22,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699802779] [2022-11-03 04:00:22,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699802779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:22,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:22,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 04:00:22,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746025168] [2022-11-03 04:00:22,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:22,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 04:00:22,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:22,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 04:00:22,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:00:22,227 INFO L87 Difference]: Start difference. First operand 1264 states and 1668 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 6 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-03 04:00:23,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:23,863 INFO L93 Difference]: Finished difference Result 2658 states and 3737 transitions. [2022-11-03 04:00:23,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 04:00:23,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 6 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 5 states have call successors, (13) Word has length 119 [2022-11-03 04:00:23,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:23,875 INFO L225 Difference]: With dead ends: 2658 [2022-11-03 04:00:23,875 INFO L226 Difference]: Without dead ends: 1984 [2022-11-03 04:00:23,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:00:23,879 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 579 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:23,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 1347 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 04:00:23,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2022-11-03 04:00:23,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1448. [2022-11-03 04:00:23,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1032 states have (on average 1.2877906976744187) internal successors, (1329), 1032 states have internal predecessors, (1329), 240 states have call successors, (240), 140 states have call predecessors, (240), 175 states have return successors, (371), 283 states have call predecessors, (371), 239 states have call successors, (371) [2022-11-03 04:00:23,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1940 transitions. [2022-11-03 04:00:23,993 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1940 transitions. Word has length 119 [2022-11-03 04:00:23,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:23,994 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 1940 transitions. [2022-11-03 04:00:23,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 6 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-03 04:00:23,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1940 transitions. [2022-11-03 04:00:23,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-03 04:00:23,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:23,999 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:24,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 04:00:24,000 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:24,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:24,001 INFO L85 PathProgramCache]: Analyzing trace with hash -188768285, now seen corresponding path program 1 times [2022-11-03 04:00:24,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:24,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965393642] [2022-11-03 04:00:24,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:24,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:24,183 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-03 04:00:24,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:24,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965393642] [2022-11-03 04:00:24,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965393642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:24,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:24,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:00:24,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966748872] [2022-11-03 04:00:24,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:24,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:00:24,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:24,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:00:24,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:00:24,186 INFO L87 Difference]: Start difference. First operand 1448 states and 1940 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-03 04:00:24,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:24,415 INFO L93 Difference]: Finished difference Result 2334 states and 3229 transitions. [2022-11-03 04:00:24,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:00:24,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 121 [2022-11-03 04:00:24,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:24,424 INFO L225 Difference]: With dead ends: 2334 [2022-11-03 04:00:24,424 INFO L226 Difference]: Without dead ends: 1476 [2022-11-03 04:00:24,427 INFO L412 NwaCegarLoop]: 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 [2022-11-03 04:00:24,428 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 9 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:24,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 544 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:00:24,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-03 04:00:24,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1456. [2022-11-03 04:00:24,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1040 states have (on average 1.289423076923077) internal successors, (1341), 1040 states have internal predecessors, (1341), 240 states have call successors, (240), 140 states have call predecessors, (240), 175 states have return successors, (371), 283 states have call predecessors, (371), 239 states have call successors, (371) [2022-11-03 04:00:24,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1952 transitions. [2022-11-03 04:00:24,519 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1952 transitions. Word has length 121 [2022-11-03 04:00:24,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:24,520 INFO L495 AbstractCegarLoop]: Abstraction has 1456 states and 1952 transitions. [2022-11-03 04:00:24,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-03 04:00:24,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1952 transitions. [2022-11-03 04:00:24,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-03 04:00:24,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:24,524 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:24,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 04:00:24,525 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:24,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:24,525 INFO L85 PathProgramCache]: Analyzing trace with hash -686245590, now seen corresponding path program 1 times [2022-11-03 04:00:24,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:24,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756547967] [2022-11-03 04:00:24,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:24,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:00:24,596 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 04:00:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:00:24,718 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 04:00:24,718 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 04:00:24,719 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 04:00:24,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 04:00:24,727 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:24,731 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 04:00:24,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:00:24 BoogieIcfgContainer [2022-11-03 04:00:24,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 04:00:24,892 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 04:00:24,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 04:00:24,892 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 04:00:24,893 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:00:16" (3/4) ... [2022-11-03 04:00:24,895 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 04:00:25,032 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aaa92a9-ced5-4d19-b530-a49405adfbc6/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 04:00:25,032 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 04:00:25,033 INFO L158 Benchmark]: Toolchain (without parser) took 12091.15ms. Allocated memory was 102.8MB in the beginning and 388.0MB in the end (delta: 285.2MB). Free memory was 65.4MB in the beginning and 152.7MB in the end (delta: -87.3MB). Peak memory consumption was 196.8MB. Max. memory is 16.1GB. [2022-11-03 04:00:25,033 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 102.8MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:00:25,033 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1513.77ms. Allocated memory was 102.8MB in the beginning and 151.0MB in the end (delta: 48.2MB). Free memory was 65.1MB in the beginning and 85.8MB in the end (delta: -20.6MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. [2022-11-03 04:00:25,036 INFO L158 Benchmark]: Boogie Procedure Inliner took 135.34ms. Allocated memory is still 151.0MB. Free memory was 85.8MB in the beginning and 80.2MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 04:00:25,037 INFO L158 Benchmark]: Boogie Preprocessor took 121.31ms. Allocated memory is still 151.0MB. Free memory was 80.2MB in the beginning and 75.2MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-03 04:00:25,037 INFO L158 Benchmark]: RCFGBuilder took 1654.43ms. Allocated memory was 151.0MB in the beginning and 262.1MB in the end (delta: 111.1MB). Free memory was 75.2MB in the beginning and 193.2MB in the end (delta: -117.9MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2022-11-03 04:00:25,038 INFO L158 Benchmark]: TraceAbstraction took 8514.49ms. Allocated memory was 262.1MB in the beginning and 388.0MB in the end (delta: 125.8MB). Free memory was 192.1MB in the beginning and 169.5MB in the end (delta: 22.6MB). Peak memory consumption was 148.4MB. Max. memory is 16.1GB. [2022-11-03 04:00:25,039 INFO L158 Benchmark]: Witness Printer took 140.29ms. Allocated memory is still 388.0MB. Free memory was 169.5MB in the beginning and 152.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-03 04:00:25,041 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 102.8MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1513.77ms. Allocated memory was 102.8MB in the beginning and 151.0MB in the end (delta: 48.2MB). Free memory was 65.1MB in the beginning and 85.8MB in the end (delta: -20.6MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 135.34ms. Allocated memory is still 151.0MB. Free memory was 85.8MB in the beginning and 80.2MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 121.31ms. Allocated memory is still 151.0MB. Free memory was 80.2MB in the beginning and 75.2MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1654.43ms. Allocated memory was 151.0MB in the beginning and 262.1MB in the end (delta: 111.1MB). Free memory was 75.2MB in the beginning and 193.2MB in the end (delta: -117.9MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. * TraceAbstraction took 8514.49ms. Allocated memory was 262.1MB in the beginning and 388.0MB in the end (delta: 125.8MB). Free memory was 192.1MB in the beginning and 169.5MB in the end (delta: 22.6MB). Peak memory consumption was 148.4MB. Max. memory is 16.1GB. * Witness Printer took 140.29ms. Allocated memory is still 388.0MB. Free memory was 169.5MB in the beginning and 152.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 5320]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L5343] int LDV_IN_INTERRUPT = 1; [L5344] struct sk_buff *proto_group0 ; [L5345] int ref_cnt ; [L5346] int ldv_state_variable_1 ; [L5347] struct net_device *proto_group1 ; [L5348] int ldv_state_variable_0 ; [L5564-L5566] static struct hdlc_proto proto = {& x25_open, & x25_close, 0, 0, 0, & x25_ioctl, 0, & x25_rx, & x25_xmit, & __this_module, 0}; [L5633] int ldv_retval_0 ; [L5634] int ldv_retval_1 ; [L5837] Element set_impl[15] ; [L5838] int last_index = 0; [L5972] Set LDV_SKBS ; [L5651] struct ifreq *ldvarg0 ; [L5652] void *tmp ; [L5653] int tmp___0 ; [L5654] int tmp___1 ; [L5655] int tmp___2 ; VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, proto={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5657] CALL, EXPR ldv_successful_zalloc(40UL) VAL [\old(__size)=40, __this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, proto={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5262] EXPR, FCALL calloc(1UL, __size) VAL [\old(__size)=40, __size=40, __this_module={18446744073709551620:18446744073709551619}, calloc(1UL, __size)={-2:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, proto={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5262] void *p = calloc(1UL, __size); VAL [\old(__size)=40, __size=40, __this_module={18446744073709551620:18446744073709551619}, calloc(1UL, __size)={-2:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, p={-2:0}, proto={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5263] CALL assume_abort_if_not(p != (void *)0) VAL [\old(cond)=1, __this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, proto={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5259] COND FALSE !(!cond) [L5263] RET assume_abort_if_not(p != (void *)0) VAL [\old(__size)=40, __size=40, __this_module={18446744073709551620:18446744073709551619}, calloc(1UL, __size)={-2:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, p={-2:0}, proto={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5264] return p; [L5657] RET, EXPR ldv_successful_zalloc(40UL) VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_successful_zalloc(40UL)={-2:0}, proto={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5657] tmp = ldv_successful_zalloc(40UL) [L5658] ldvarg0 = (struct ifreq *)tmp [L5659] CALL ldv_initialize() [L5991] CALL ldv_set_init(LDV_SKBS) [L5843] set = set_impl [L5844] last_index = 0 [L5991] RET ldv_set_init(LDV_SKBS) [L5659] RET ldv_initialize() [L5660] ldv_state_variable_1 = 0 [L5661] ref_cnt = 0 [L5662] ldv_state_variable_0 = 1 VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=0, ldvarg0={-2:0}, proto={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}, tmp={-2:0}] [L5664] tmp___0 = __VERIFIER_nondet_int() [L5666] case 0: [L5731] case 1: VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=0, ldvarg0={-2:0}, proto={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}, tmp={-2:0}, tmp___0=1] [L5732] COND TRUE ldv_state_variable_0 != 0 [L5733] tmp___2 = __VERIFIER_nondet_int() [L5735] case 0: [L5743] case 1: VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=1, ldv_state_variable_1=0, ldvarg0={-2:0}, proto={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}, tmp={-2:0}, tmp___0=1, tmp___2=1] [L5744] COND TRUE ldv_state_variable_0 == 1 [L5745] CALL, EXPR mod_init() [L5622] FCALL register_hdlc_protocol(& proto) [L5623] return (0); [L5745] RET, EXPR mod_init() [L5745] ldv_retval_1 = mod_init() [L5746] COND TRUE ldv_retval_1 == 0 [L5747] ldv_state_variable_0 = 3 [L5748] ldv_state_variable_1 = 1 [L5749] CALL ldv_initialize_hdlc_proto_1() [L5639] void *tmp ; [L5640] void *tmp___0 ; VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5642] CALL, EXPR ldv_successful_zalloc(3264UL) VAL [\old(__size)=3264, __this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5262] EXPR, FCALL calloc(1UL, __size) VAL [\old(__size)=3264, __size=3264, __this_module={18446744073709551620:18446744073709551619}, calloc(1UL, __size)={-3:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5262] void *p = calloc(1UL, __size); VAL [\old(__size)=3264, __size=3264, __this_module={18446744073709551620:18446744073709551619}, calloc(1UL, __size)={-3:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, p={-3:0}, proto={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5263] CALL assume_abort_if_not(p != (void *)0) VAL [\old(cond)=1, __this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5259] COND FALSE !(!cond) [L5263] RET assume_abort_if_not(p != (void *)0) VAL [\old(__size)=3264, __size=3264, __this_module={18446744073709551620:18446744073709551619}, calloc(1UL, __size)={-3:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, p={-3:0}, proto={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5264] return p; [L5642] RET, EXPR ldv_successful_zalloc(3264UL) VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_successful_zalloc(3264UL)={-3:0}, proto={7:0}, proto_group0={0:0}, proto_group1={0:0}, ref_cnt=0, set_impl={8:0}] [L5642] tmp = ldv_successful_zalloc(3264UL) [L5643] proto_group1 = (struct net_device *)tmp VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={-3:0}] [L5644] CALL, EXPR ldv_successful_zalloc(232UL) VAL [\old(__size)=232, __this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5262] EXPR, FCALL calloc(1UL, __size) VAL [\old(__size)=232, __size=232, __this_module={18446744073709551620:18446744073709551619}, calloc(1UL, __size)={18446744073709551617:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5262] void *p = calloc(1UL, __size); VAL [\old(__size)=232, __size=232, __this_module={18446744073709551620:18446744073709551619}, calloc(1UL, __size)={18446744073709551617:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, p={18446744073709551617:0}, proto={7:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5263] CALL assume_abort_if_not(p != (void *)0) VAL [\old(cond)=1, __this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5259] COND FALSE !(!cond) [L5263] RET assume_abort_if_not(p != (void *)0) VAL [\old(__size)=232, __size=232, __this_module={18446744073709551620:18446744073709551619}, calloc(1UL, __size)={18446744073709551617:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, p={18446744073709551617:0}, proto={7:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5264] return p; [L5644] RET, EXPR ldv_successful_zalloc(232UL) VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_successful_zalloc(232UL)={18446744073709551617:0}, proto={7:0}, proto_group0={0:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={-3:0}] [L5644] tmp___0 = ldv_successful_zalloc(232UL) [L5645] proto_group0 = (struct sk_buff *)tmp___0 [L5749] RET ldv_initialize_hdlc_proto_1() [L5752] COND FALSE !(ldv_retval_1 != 0) VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={-2:0}, tmp___0=1, tmp___2=1] [L5664] tmp___0 = __VERIFIER_nondet_int() [L5666] case 0: VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={-2:0}, tmp___0=0, tmp___2=1] [L5667] COND TRUE ldv_state_variable_1 != 0 [L5668] tmp___1 = __VERIFIER_nondet_int() [L5670] case 0: VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={-2:0}, tmp___0=0, tmp___1=0, tmp___2=1] [L5671] COND TRUE ldv_state_variable_1 == 1 VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={-2:0}, tmp___0=0, tmp___1=0, tmp___2=1] [L5672] CALL x25_xmit(proto_group0, proto_group1) VAL [\old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5471] int result ; VAL [\old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, dev={-3:0}, dev={-3:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, skb={18446744073709551617:0}, skb={18446744073709551617:0}] [L5473] CALL assume_abort_if_not(((void*)(skb)) != ((void*) 0)) VAL [\old(cond)=1, \old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5259] COND FALSE !(!cond) [L5473] RET assume_abort_if_not(((void*)(skb)) != ((void*) 0)) VAL [\old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, dev={-3:0}, dev={-3:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, skb={18446744073709551617:0}, skb={18446744073709551617:0}] [L5474] EXPR skb->data VAL [\old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, dev={-3:0}, dev={-3:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, skb={18446744073709551617:0}, skb={18446744073709551617:0}, skb->data={0:18446744073709551621}] [L5474] CALL assume_abort_if_not(((void*)((skb->data))) != ((void*) 0)) VAL [\old(cond)=1, \old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5259] COND FALSE !(!cond) [L5474] RET assume_abort_if_not(((void*)((skb->data))) != ((void*) 0)) VAL [\old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, dev={-3:0}, dev={-3:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, skb={18446744073709551617:0}, skb={18446744073709551617:0}, skb->data={0:18446744073709551621}] [L5475] skb->data [L5476] case 0: [L5484] case 1: [L5496] case 2: [L5497] CALL, EXPR lapb_disconnect_request(dev) [L6080] return __VERIFIER_nondet_int(); [L5497] RET, EXPR lapb_disconnect_request(dev) [L5497] result = lapb_disconnect_request(dev) [L5498] COND TRUE result != 0 VAL [\old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, dev={-3:0}, dev={-3:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, result=4, set_impl={8:0}, skb={18446744073709551617:0}, skb={18446744073709551617:0}, skb->data={0:18446744073709551621}skb->data=258] [L5499] COND TRUE result == 4 [L5500] CALL x25_disconnected(dev, 0) [L5435] CALL x25_connect_disconnect(dev, reason, 2) VAL [\old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5409] struct sk_buff *skb ; [L5410] unsigned char *ptr ; [L5412] CALL, EXPR ldv_dev_alloc_skb_12(1U) [L5814] struct sk_buff *tmp ; VAL [\old(last_index)=0, \old(length)=1, __this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, length=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5816] CALL, EXPR ldv_skb_alloc() VAL [\old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5975] void *skb ; [L5976] void *tmp___7 ; VAL [\old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5978] CALL, EXPR ldv_successful_zalloc(sizeof(struct sk_buff___0 )) VAL [\old(__size)=248, \old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5262] EXPR, FCALL calloc(1UL, __size) VAL [\old(__size)=248, \old(last_index)=0, __size=248, __this_module={18446744073709551620:18446744073709551619}, calloc(1UL, __size)={18446744073709551616:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5262] void *p = calloc(1UL, __size); VAL [\old(__size)=248, \old(last_index)=0, __size=248, __this_module={18446744073709551620:18446744073709551619}, calloc(1UL, __size)={18446744073709551616:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, p={18446744073709551616:0}, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5263] CALL assume_abort_if_not(p != (void *)0) VAL [\old(cond)=1, \old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5259] COND FALSE !(!cond) [L5263] RET assume_abort_if_not(p != (void *)0) VAL [\old(__size)=248, \old(last_index)=0, __size=248, __this_module={18446744073709551620:18446744073709551619}, calloc(1UL, __size)={18446744073709551616:0}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, p={18446744073709551616:0}, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5264] return p; [L5978] RET, EXPR ldv_successful_zalloc(sizeof(struct sk_buff___0 )) VAL [\old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_successful_zalloc(sizeof(struct sk_buff___0 ))={18446744073709551616:0}, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5978] tmp___7 = ldv_successful_zalloc(sizeof(struct sk_buff___0 )) [L5979] skb = (struct sk_buff___0 *)tmp___7 VAL [\old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, skb={18446744073709551616:0}, tmp___7={18446744073709551616:0}] [L5980] COND FALSE !(! skb) [L5983] CALL ldv_set_add(LDV_SKBS, skb) [L5851] int i ; [L5853] i = 0 VAL [\old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, e={18446744073709551616:0}, e={18446744073709551616:0}, i=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5854] COND TRUE 1 VAL [\old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, e={18446744073709551616:0}, e={18446744073709551616:0}, i=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5855] COND FALSE !(i < last_index) VAL [\old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, e={18446744073709551616:0}, e={18446744073709551616:0}, i=0, last_index=0, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5865] COND TRUE last_index < 15 [L5866] set_impl[last_index] = e [L5867] last_index = last_index + 1 VAL [\old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, e={18446744073709551616:0}, e={18446744073709551616:0}, i=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5983] RET ldv_set_add(LDV_SKBS, skb) [L5984] return (skb); VAL [\old(last_index)=0, \result={18446744073709551616:0}, __this_module={18446744073709551620:18446744073709551619}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, skb={18446744073709551616:0}, tmp___7={18446744073709551616:0}] [L5816] RET, EXPR ldv_skb_alloc() VAL [\old(last_index)=0, \old(length)=1, __this_module={18446744073709551620:18446744073709551619}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, ldv_skb_alloc()={18446744073709551616:0}, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, length=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5816] tmp = ldv_skb_alloc() [L5817] return (tmp); [L5412] RET, EXPR ldv_dev_alloc_skb_12(1U) [L5412] skb = ldv_dev_alloc_skb_12(1U) [L5413] COND TRUE (unsigned long )skb == (unsigned long )((struct sk_buff *)0) [L5435] RET x25_connect_disconnect(dev, reason, 2) VAL [\old(last_index)=0, \old(reason)=0, __this_module={18446744073709551620:18446744073709551619}, dev={-3:0}, dev={-3:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, reason=0, ref_cnt=0, set_impl={8:0}] [L5500] RET x25_disconnected(dev, 0) [L5512] CALL ldv_skb_free(skb) VAL [\old(last_index)=1, __this_module={18446744073709551620:18446744073709551619}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, skb={18446744073709551617:0}] [L5998] CALL ldv_set_remove(LDV_SKBS, skb) VAL [\old(last_index)=1, __this_module={18446744073709551620:18446744073709551619}, e={18446744073709551617:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set_impl={8:0}] [L5876] int i ; [L5877] int deleted_index ; [L5879] deleted_index = -1 [L5880] i = 0 VAL [\old(last_index)=1, __this_module={18446744073709551620:18446744073709551619}, deleted_index=-1, e={18446744073709551617:0}, e={18446744073709551617:0}, i=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5881] COND TRUE 1 VAL [\old(last_index)=1, __this_module={18446744073709551620:18446744073709551619}, deleted_index=-1, e={18446744073709551617:0}, e={18446744073709551617:0}, i=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5882] COND TRUE i < last_index [L5886] EXPR set_impl[i] VAL [\old(last_index)=1, __this_module={18446744073709551620:18446744073709551619}, deleted_index=-1, e={18446744073709551617:0}, e={18446744073709551617:0}, i=0, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}, set_impl[i]={18446744073709551616:0}] [L5886] COND FALSE !((unsigned long )set_impl[i] == (unsigned long )e) [L5891] i = i + 1 VAL [\old(last_index)=1, __this_module={18446744073709551620:18446744073709551619}, deleted_index=-1, e={18446744073709551617:0}, e={18446744073709551617:0}, i=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5881] COND TRUE 1 VAL [\old(last_index)=1, __this_module={18446744073709551620:18446744073709551619}, deleted_index=-1, e={18446744073709551617:0}, e={18446744073709551617:0}, i=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5882] COND FALSE !(i < last_index) VAL [\old(last_index)=1, __this_module={18446744073709551620:18446744073709551619}, deleted_index=-1, e={18446744073709551617:0}, e={18446744073709551617:0}, i=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5893] COND FALSE !(deleted_index != -1) VAL [\old(last_index)=1, __this_module={18446744073709551620:18446744073709551619}, deleted_index=-1, e={18446744073709551617:0}, e={18446744073709551617:0}, i=1, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set={0:0}, set={0:0}, set_impl={8:0}] [L5998] RET ldv_set_remove(LDV_SKBS, skb) VAL [\old(last_index)=1, __this_module={18446744073709551620:18446744073709551619}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, skb={18446744073709551617:0}, skb={18446744073709551617:0}] [L5512] RET ldv_skb_free(skb) VAL [\old(last_index)=0, __this_module={18446744073709551620:18446744073709551619}, dev={-3:0}, dev={-3:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, result=4, set_impl={8:0}, skb={18446744073709551617:0}, skb={18446744073709551617:0}, skb->data={0:18446744073709551621}skb->data=258] [L5513] return (0); VAL [\old(last_index)=0, \result=0, __this_module={18446744073709551620:18446744073709551619}, dev={-3:0}, dev={-3:0}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, result=4, set_impl={8:0}, skb={18446744073709551617:0}, skb={18446744073709551617:0}, skb->data=258skb->data={0:18446744073709551621}] [L5672] RET x25_xmit(proto_group0, proto_group1) VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={-2:0}, tmp___0=0, tmp___1=0, tmp___2=1, x25_xmit(proto_group0, proto_group1)=0] [L5673] ldv_state_variable_1 = 1 VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={-2:0}, tmp___0=0, tmp___1=0, tmp___2=1] [L5676] COND FALSE !(ldv_state_variable_1 == 2) VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={-2:0}, tmp___0=0, tmp___1=0, tmp___2=1] [L5664] tmp___0 = __VERIFIER_nondet_int() [L5666] case 0: [L5731] case 1: VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={-2:0}, tmp___0=1, tmp___1=0, tmp___2=1] [L5732] COND TRUE ldv_state_variable_0 != 0 [L5733] tmp___2 = __VERIFIER_nondet_int() [L5735] case 0: VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=3, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={-2:0}, tmp___0=1, tmp___1=0, tmp___2=0] [L5736] COND TRUE ldv_state_variable_0 == 3 && ref_cnt == 0 [L5737] CALL mod_exit() [L5629] FCALL unregister_hdlc_protocol(& proto) [L5737] RET mod_exit() [L5738] ldv_state_variable_0 = 2 VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, ldvarg0={-2:0}, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp={-2:0}, tmp___0=1, tmp___1=0, tmp___2=0] [L5773] CALL ldv_check_final_state() [L6042] int tmp___7 ; [L6044] CALL, EXPR ldv_set_is_empty(LDV_SKBS) [L5933] return (last_index == 0); [L6044] RET, EXPR ldv_set_is_empty(LDV_SKBS) [L6044] tmp___7 = ldv_set_is_empty(LDV_SKBS) [L6045] COND FALSE !(\read(tmp___7)) VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}, tmp___7=0] [L6047] CALL ldv_error() VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] [L5320] reach_error() VAL [__this_module={18446744073709551620:18446744073709551619}, last_index=1, LDV_IN_INTERRUPT=1, ldv_retval_0=0, ldv_retval_1=0, LDV_SKBS={0:0}, ldv_state_variable_0=2, ldv_state_variable_1=1, proto={7:0}, proto_group0={18446744073709551617:0}, proto_group1={-3:0}, ref_cnt=0, set_impl={8:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 168 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.3s, OverallIterations: 9, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1646 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1597 mSDsluCounter, 4751 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3457 mSDsCounter, 508 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2353 IncrementalHoareTripleChecker+Invalid, 2861 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 508 mSolverCounterUnsat, 1752 mSDtfsCounter, 2353 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1456occurred in iteration=8, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 770 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 775 NumberOfCodeBlocks, 775 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 644 ConstructedInterpolants, 0 QuantifiedInterpolants, 1102 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 341/341 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-03 04:00:25,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aaa92a9-ced5-4d19-b530-a49405adfbc6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE