./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF --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 f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:25:59,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:25:59,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:25:59,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:25:59,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:25:59,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:25:59,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:25:59,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:25:59,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:25:59,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:25:59,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:25:59,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:25:59,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:25:59,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:25:59,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:25:59,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:25:59,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:25:59,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:25:59,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:25:59,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:25:59,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:25:59,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:25:59,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:25:59,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:25:59,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:25:59,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:25:59,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:25:59,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:25:59,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:25:59,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:25:59,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:25:59,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:25:59,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:25:59,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:25:59,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:25:59,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:25:59,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:25:59,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:25:59,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:25:59,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:25:59,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:25:59,468 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:25:59,517 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:25:59,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:25:59,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:25:59,523 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:25:59,524 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:25:59,524 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:25:59,524 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:25:59,524 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:25:59,525 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:25:59,525 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:25:59,526 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:25:59,526 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:25:59,527 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:25:59,527 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:25:59,527 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:25:59,527 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:25:59,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:25:59,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:25:59,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:25:59,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:25:59,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:25:59,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:25:59,530 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:25:59,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:25:59,530 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:25:59,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:25:59,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:25:59,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:25:59,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:25:59,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:25:59,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:25:59,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:25:59,534 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:25:59,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:25:59,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:25:59,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:25:59,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:25:59,535 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2021-11-12 23:25:59,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:25:59,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:25:59,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:25:59,835 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:25:59,836 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:25:59,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-12 23:25:59,905 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/data/3109fa0ad/08e89673b6824fadb4b065a7bf04af23/FLAG0bef75b41 [2021-11-12 23:26:00,824 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:26:00,824 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-12 23:26:00,876 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/data/3109fa0ad/08e89673b6824fadb4b065a7bf04af23/FLAG0bef75b41 [2021-11-12 23:26:01,257 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/data/3109fa0ad/08e89673b6824fadb4b065a7bf04af23 [2021-11-12 23:26:01,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:26:01,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:26:01,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:26:01,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:26:01,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:26:01,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:26:01" (1/1) ... [2021-11-12 23:26:01,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f833e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:01, skipping insertion in model container [2021-11-12 23:26:01,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:26:01" (1/1) ... [2021-11-12 23:26:01,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:26:01,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:26:03,068 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,074 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,135 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,139 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,153 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,154 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,155 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,156 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,177 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,192 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,247 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,256 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,272 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,290 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,428 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,428 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,431 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,649 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,715 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,754 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,767 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,768 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,773 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,774 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,779 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,785 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,790 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,804 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,811 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,832 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,838 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,839 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,845 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,851 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,859 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,903 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,904 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:26:03,959 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-11-12 23:26:04,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:26:04,098 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:26:04,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@207e7c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:04, skipping insertion in model container [2021-11-12 23:26:04,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:26:04,100 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:26:04,102 INFO L158 Benchmark]: Toolchain (without parser) took 2839.28ms. Allocated memory was 86.0MB in the beginning and 144.7MB in the end (delta: 58.7MB). Free memory was 52.3MB in the beginning and 93.6MB in the end (delta: -41.3MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2021-11-12 23:26:04,103 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory was 65.8MB in the beginning and 65.7MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:26:04,104 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2837.11ms. Allocated memory was 86.0MB in the beginning and 144.7MB in the end (delta: 58.7MB). Free memory was 52.1MB in the beginning and 93.6MB in the end (delta: -41.6MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2021-11-12 23:26:04,106 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory was 65.8MB in the beginning and 65.7MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2837.11ms. Allocated memory was 86.0MB in the beginning and 144.7MB in the end (delta: 58.7MB). Free memory was 52.1MB in the beginning and 93.6MB in the end (delta: -41.6MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5419]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF --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 f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:26:06,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:26:06,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:26:06,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:26:06,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:26:06,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:26:06,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:26:06,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:26:06,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:26:06,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:26:06,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:26:06,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:26:06,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:26:06,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:26:06,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:26:06,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:26:06,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:26:06,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:26:06,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:26:06,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:26:06,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:26:06,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:26:06,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:26:06,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:26:06,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:26:06,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:26:06,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:26:06,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:26:06,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:26:06,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:26:06,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:26:06,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:26:06,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:26:06,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:26:06,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:26:06,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:26:06,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:26:06,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:26:06,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:26:06,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:26:06,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:26:06,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:26:06,393 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:26:06,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:26:06,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:26:06,394 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:26:06,395 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:26:06,395 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:26:06,396 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:26:06,396 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:26:06,396 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:26:06,397 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:26:06,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:26:06,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:26:06,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:26:06,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:26:06,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:26:06,399 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:26:06,399 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:26:06,399 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:26:06,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:26:06,400 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:26:06,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:26:06,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:26:06,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:26:06,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:26:06,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:26:06,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:26:06,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:26:06,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:26:06,402 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:26:06,402 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:26:06,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:26:06,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:26:06,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:26:06,403 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2021-11-12 23:26:06,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:26:06,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:26:06,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:26:06,826 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:26:06,827 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:26:06,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-12 23:26:06,898 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/data/cde2fd8e4/5a15a2e4c4ff4152bd33080e02d89566/FLAG3339301b6 [2021-11-12 23:26:07,968 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:26:07,969 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-12 23:26:08,035 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/data/cde2fd8e4/5a15a2e4c4ff4152bd33080e02d89566/FLAG3339301b6 [2021-11-12 23:26:08,303 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/data/cde2fd8e4/5a15a2e4c4ff4152bd33080e02d89566 [2021-11-12 23:26:08,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:26:08,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:26:08,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:26:08,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:26:08,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:26:08,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:26:08" (1/1) ... [2021-11-12 23:26:08,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66d61a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:08, skipping insertion in model container [2021-11-12 23:26:08,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:26:08" (1/1) ... [2021-11-12 23:26:08,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:26:08,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:26:10,886 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-11-12 23:26:11,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:26:11,048 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:26:11,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:26:11,568 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-11-12 23:26:11,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:26:11,592 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:26:12,128 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-11-12 23:26:12,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:26:12,305 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:26:12,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:12 WrapperNode [2021-11-12 23:26:12,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:26:12,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:26:12,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:26:12,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:26:12,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:12" (1/1) ... [2021-11-12 23:26:12,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:12" (1/1) ... [2021-11-12 23:26:12,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:26:12,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:26:12,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:26:12,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:26:12,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:12" (1/1) ... [2021-11-12 23:26:12,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:12" (1/1) ... [2021-11-12 23:26:12,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:12" (1/1) ... [2021-11-12 23:26:12,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:12" (1/1) ... [2021-11-12 23:26:12,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:12" (1/1) ... [2021-11-12 23:26:12,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:12" (1/1) ... [2021-11-12 23:26:13,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:12" (1/1) ... [2021-11-12 23:26:13,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:26:13,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:26:13,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:26:13,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:26:13,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:12" (1/1) ... [2021-11-12 23:26:13,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:26:13,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:26:13,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:26:13,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:26:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2021-11-12 23:26:13,157 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2021-11-12 23:26:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2021-11-12 23:26:13,158 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2021-11-12 23:26:13,158 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2021-11-12 23:26:13,158 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2021-11-12 23:26:13,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:26:13,158 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-11-12 23:26:13,158 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-11-12 23:26:13,159 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-12 23:26:13,159 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-12 23:26:13,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:26:13,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:26:13,159 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-11-12 23:26:13,159 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-11-12 23:26:13,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 23:26:13,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:26:13,160 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-11-12 23:26:13,160 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-11-12 23:26:13,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:26:13,160 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-12 23:26:13,160 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-12 23:26:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2021-11-12 23:26:13,161 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2021-11-12 23:26:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-11-12 23:26:13,161 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-11-12 23:26:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2021-11-12 23:26:13,161 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2021-11-12 23:26:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-12 23:26:13,162 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-12 23:26:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-12 23:26:13,162 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-12 23:26:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-12 23:26:13,162 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-12 23:26:13,163 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-11-12 23:26:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-11-12 23:26:13,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:26:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:26:13,164 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-11-12 23:26:13,164 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-11-12 23:26:13,164 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-12 23:26:13,164 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-12 23:26:13,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-12 23:26:13,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-12 23:26:13,165 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-12 23:26:13,165 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-12 23:26:13,165 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-12 23:26:13,165 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2021-11-12 23:26:13,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2021-11-12 23:26:13,166 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2021-11-12 23:26:13,166 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2021-11-12 23:26:13,166 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-11-12 23:26:13,167 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-11-12 23:26:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2021-11-12 23:26:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2021-11-12 23:26:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2021-11-12 23:26:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2021-11-12 23:26:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-12 23:26:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-12 23:26:13,169 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-12 23:26:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-12 23:26:13,169 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-12 23:26:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-12 23:26:13,170 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-11-12 23:26:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-11-12 23:26:13,170 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2021-11-12 23:26:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2021-11-12 23:26:13,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:26:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-12 23:26:13,171 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-12 23:26:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-11-12 23:26:13,172 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-11-12 23:26:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2021-11-12 23:26:13,172 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2021-11-12 23:26:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:26:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-12 23:26:13,172 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-12 23:26:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-11-12 23:26:13,173 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-11-12 23:26:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2021-11-12 23:26:13,173 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2021-11-12 23:26:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:26:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:26:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:26:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:26:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:26:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:26:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-11-12 23:26:13,175 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-11-12 23:26:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2021-11-12 23:26:13,175 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2021-11-12 23:26:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-12 23:26:13,176 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-12 23:26:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-12 23:26:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2021-11-12 23:26:13,177 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2021-11-12 23:26:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:26:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:26:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2021-11-12 23:26:13,178 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2021-11-12 23:26:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-12 23:26:13,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-12 23:26:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-12 23:26:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-12 23:26:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-12 23:26:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-12 23:26:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-12 23:26:13,180 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-12 23:26:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-11-12 23:26:13,180 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-11-12 23:26:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2021-11-12 23:26:13,180 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2021-11-12 23:26:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2021-11-12 23:26:13,181 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2021-11-12 23:26:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-12 23:26:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-12 23:26:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-12 23:26:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-12 23:26:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-12 23:26:13,187 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-12 23:26:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-11-12 23:26:13,187 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-11-12 23:26:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-12 23:26:13,194 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-12 23:26:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-11-12 23:26:13,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-11-12 23:26:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-11-12 23:26:13,194 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-11-12 23:26:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-11-12 23:26:13,195 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-11-12 23:26:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2021-11-12 23:26:13,195 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2021-11-12 23:26:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-12 23:26:13,195 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-12 23:26:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-12 23:26:13,195 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-12 23:26:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-12 23:26:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2021-11-12 23:26:13,196 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2021-11-12 23:26:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-12 23:26:13,196 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-12 23:26:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-11-12 23:26:13,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-11-12 23:26:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-11-12 23:26:13,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-11-12 23:26:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-11-12 23:26:13,197 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-11-12 23:26:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-11-12 23:26:13,197 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-11-12 23:26:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2021-11-12 23:26:13,197 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2021-11-12 23:26:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2021-11-12 23:26:13,198 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2021-11-12 23:26:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 23:26:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 23:26:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 23:26:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 23:26:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-11-12 23:26:13,199 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-11-12 23:26:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-12 23:26:13,199 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-12 23:26:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-12 23:26:13,199 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-12 23:26:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:26:13,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:26:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2021-11-12 23:26:13,200 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2021-11-12 23:26:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-11-12 23:26:13,200 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-11-12 23:26:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:26:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-11-12 23:26:13,200 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-11-12 23:26:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-12 23:26:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-12 23:26:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2021-11-12 23:26:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2021-11-12 23:26:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-11-12 23:26:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-11-12 23:26:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2021-11-12 23:26:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2021-11-12 23:26:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-11-12 23:26:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-11-12 23:26:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:26:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-12 23:26:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-12 23:26:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-12 23:26:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 23:26:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 23:26:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-11-12 23:26:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-11-12 23:26:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:26:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:26:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 23:26:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-11-12 23:26:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-11-12 23:26:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-12 23:26:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-12 23:26:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-12 23:26:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-12 23:26:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-11-12 23:26:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-11-12 23:26:13,205 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-12 23:26:13,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-12 23:26:13,205 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-12 23:26:13,205 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-12 23:26:13,205 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-11-12 23:26:13,205 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-11-12 23:26:13,205 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-12 23:26:13,206 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-12 23:26:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 23:26:13,206 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 23:26:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-11-12 23:26:13,206 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-11-12 23:26:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2021-11-12 23:26:13,206 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2021-11-12 23:26:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-11-12 23:26:13,207 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-11-12 23:26:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-11-12 23:26:13,207 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-11-12 23:26:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-11-12 23:26:13,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-11-12 23:26:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-11-12 23:26:13,207 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-11-12 23:26:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-12 23:26:13,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-12 23:26:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-12 23:26:13,208 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-12 23:26:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-11-12 23:26:13,208 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-11-12 23:26:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 23:26:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2021-11-12 23:26:13,209 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2021-11-12 23:26:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2021-11-12 23:26:13,209 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2021-11-12 23:26:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-12 23:26:13,209 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-12 23:26:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:26:13,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:26:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-12 23:26:13,210 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-12 23:26:41,089 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857: SUMMARY for call __copy_to_user_#t~ret148#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_to_user_~ret~2#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-12 23:26:41,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857-1: __copy_to_user_~tmp___1~3#1 := __copy_to_user_#t~ret148#1;havoc __copy_to_user_#t~ret148#1; [2021-11-12 23:26:41,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845: SUMMARY for call __copy_to_user_#t~ret147#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_to_user_~ret~2#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-12 23:26:41,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845-1: __copy_to_user_~tmp___0~6#1 := __copy_to_user_#t~ret147#1;havoc __copy_to_user_#t~ret147#1; [2021-11-12 23:26:41,091 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch146#1; [2021-11-12 23:26:41,091 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch146#1; [2021-11-12 23:26:41,091 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume 0bv64 != __copy_to_user_~tmp___1~3#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-12 23:26:41,091 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume !(0bv64 != __copy_to_user_~tmp___1~3#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-12 23:26:41,091 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch146#1; [2021-11-12 23:26:41,092 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch146#1;__copy_to_user_#t~switch146#1 := true; [2021-11-12 23:26:41,092 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch146#1; [2021-11-12 23:26:41,092 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume 0bv64 != __copy_to_user_~tmp___0~6#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-12 23:26:41,092 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume !(0bv64 != __copy_to_user_~tmp___0~6#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-12 23:26:41,092 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch146#1; [2021-11-12 23:26:41,092 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume !__copy_to_user_#t~switch146#1;__copy_to_user_#t~switch146#1 := __copy_to_user_#t~switch146#1 || 16bv32 == __copy_to_user_~size#1; [2021-11-12 23:26:41,093 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume __copy_to_user_#t~switch146#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-12 23:26:41,093 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume !__copy_to_user_#t~switch146#1;__copy_to_user_#t~switch146#1 := __copy_to_user_#t~switch146#1 || 10bv32 == __copy_to_user_~size#1; [2021-11-12 23:26:41,093 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867: SUMMARY for call __copy_to_user_#t~ret149#1 := copy_user_generic(__copy_to_user_~dst#1.base, __copy_to_user_~dst#1.offset, __copy_to_user_~src#1.base, __copy_to_user_~src#1.offset, __copy_to_user_~size#1); srcloc: null [2021-11-12 23:26:41,093 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume __copy_to_user_#t~switch146#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-12 23:26:41,093 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume !__copy_to_user_#t~switch146#1;__copy_to_user_#t~switch146#1 := __copy_to_user_#t~switch146#1 || 8bv32 == __copy_to_user_~size#1; [2021-11-12 23:26:41,094 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867-1: __copy_to_user_~tmp___2~4#1 := __copy_to_user_#t~ret149#1;havoc __copy_to_user_#t~ret149#1;__copy_to_user_#res#1 := __copy_to_user_~tmp___2~4#1[32:0]; [2021-11-12 23:26:41,094 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume __copy_to_user_#t~switch146#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-12 23:26:41,094 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume !__copy_to_user_#t~switch146#1;__copy_to_user_#t~switch146#1 := __copy_to_user_#t~switch146#1 || 4bv32 == __copy_to_user_~size#1; [2021-11-12 23:26:41,094 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume __copy_to_user_#t~switch146#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-12 23:26:41,094 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !__copy_to_user_#t~switch146#1;__copy_to_user_#t~switch146#1 := __copy_to_user_#t~switch146#1 || 2bv32 == __copy_to_user_~size#1; [2021-11-12 23:26:56,771 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785: SUMMARY for call __copy_from_user_#t~ret142#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_from_user_~ret~1#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-12 23:26:56,771 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785-1: __copy_from_user_~tmp___0~5#1 := __copy_from_user_#t~ret142#1;havoc __copy_from_user_#t~ret142#1; [2021-11-12 23:26:56,771 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume 0bv64 != __copy_from_user_~tmp___0~5#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-12 23:26:56,772 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume !(0bv64 != __copy_from_user_~tmp___0~5#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-12 23:26:56,772 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch141#1; [2021-11-12 23:26:56,772 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch141#1; [2021-11-12 23:26:56,772 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch141#1;__copy_from_user_#t~switch141#1 := true; [2021-11-12 23:26:56,772 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798: SUMMARY for call __copy_from_user_#t~ret143#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_from_user_~ret~1#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-12 23:26:56,772 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798-1: __copy_from_user_~tmp___1~2#1 := __copy_from_user_#t~ret143#1;havoc __copy_from_user_#t~ret143#1; [2021-11-12 23:26:56,772 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume 0bv64 != __copy_from_user_~tmp___1~2#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-12 23:26:56,772 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume !(0bv64 != __copy_from_user_~tmp___1~2#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-12 23:26:56,772 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume __copy_from_user_#t~switch141#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-12 23:26:56,773 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume !__copy_from_user_#t~switch141#1;__copy_from_user_#t~switch141#1 := __copy_from_user_#t~switch141#1 || 4bv32 == __copy_from_user_~size#1; [2021-11-12 23:26:56,773 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume __copy_from_user_#t~switch141#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-12 23:26:56,773 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume !__copy_from_user_#t~switch141#1;__copy_from_user_#t~switch141#1 := __copy_from_user_#t~switch141#1 || 8bv32 == __copy_from_user_~size#1; [2021-11-12 23:26:56,773 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !__copy_from_user_#t~switch141#1;__copy_from_user_#t~switch141#1 := __copy_from_user_#t~switch141#1 || 2bv32 == __copy_from_user_~size#1; [2021-11-12 23:26:56,773 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume __copy_from_user_#t~switch141#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-12 23:26:56,773 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch141#1; [2021-11-12 23:26:56,773 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch141#1; [2021-11-12 23:26:56,773 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808-1: __copy_from_user_~tmp___2~3#1 := __copy_from_user_#t~ret144#1;havoc __copy_from_user_#t~ret144#1;__copy_from_user_#res#1 := __copy_from_user_~tmp___2~3#1[32:0]; [2021-11-12 23:26:56,774 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808: SUMMARY for call __copy_from_user_#t~ret144#1 := copy_user_generic(__copy_from_user_~dst#1.base, __copy_from_user_~dst#1.offset, __copy_from_user_~src#1.base, __copy_from_user_~src#1.offset, __copy_from_user_~size#1); srcloc: null [2021-11-12 23:26:56,774 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume __copy_from_user_#t~switch141#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-12 23:26:56,774 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume !__copy_from_user_#t~switch141#1;__copy_from_user_#t~switch141#1 := __copy_from_user_#t~switch141#1 || 10bv32 == __copy_from_user_~size#1; [2021-11-12 23:26:56,774 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch141#1; [2021-11-12 23:26:56,774 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume !__copy_from_user_#t~switch141#1;__copy_from_user_#t~switch141#1 := __copy_from_user_#t~switch141#1 || 16bv32 == __copy_from_user_~size#1; [2021-11-12 23:27:15,393 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:27:15,394 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:27:15,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:27:15 BoogieIcfgContainer [2021-11-12 23:27:15,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:27:15,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:27:15,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:27:15,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:27:15,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:26:08" (1/3) ... [2021-11-12 23:27:15,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc58010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:27:15, skipping insertion in model container [2021-11-12 23:27:15,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:26:12" (2/3) ... [2021-11-12 23:27:15,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc58010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:27:15, skipping insertion in model container [2021-11-12 23:27:15,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:27:15" (3/3) ... [2021-11-12 23:27:15,407 INFO L111 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-12 23:27:15,412 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:27:15,413 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:27:15,469 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:27:15,476 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:27:15,477 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:27:15,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 2218 states, 1540 states have (on average 1.346103896103896) internal successors, (2073), 1586 states have internal predecessors, (2073), 572 states have call successors, (572), 104 states have call predecessors, (572), 104 states have return successors, (572), 567 states have call predecessors, (572), 572 states have call successors, (572) [2021-11-12 23:27:15,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:27:15,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:15,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:27:15,626 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:27:15,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:15,636 INFO L85 PathProgramCache]: Analyzing trace with hash -801145376, now seen corresponding path program 1 times [2021-11-12 23:27:15,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:15,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987133229] [2021-11-12 23:27:15,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:15,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:15,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:15,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:15,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:27:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:19,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:27:19,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:20,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:20,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:20,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:20,375 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:20,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987133229] [2021-11-12 23:27:20,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987133229] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:27:20,376 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:27:20,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:27:20,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374275471] [2021-11-12 23:27:20,378 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:27:20,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:27:20,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:27:20,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:27:20,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:27:20,432 INFO L87 Difference]: Start difference. First operand has 2218 states, 1540 states have (on average 1.346103896103896) internal successors, (2073), 1586 states have internal predecessors, (2073), 572 states have call successors, (572), 104 states have call predecessors, (572), 104 states have return successors, (572), 567 states have call predecessors, (572), 572 states have call successors, (572) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:27:22,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:23,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:23,005 INFO L93 Difference]: Finished difference Result 4422 states and 6498 transitions. [2021-11-12 23:27:23,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:27:23,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-12 23:27:23,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:23,053 INFO L225 Difference]: With dead ends: 4422 [2021-11-12 23:27:23,053 INFO L226 Difference]: Without dead ends: 2207 [2021-11-12 23:27:23,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:27:23,081 INFO L933 BasicCegarLoop]: 3205 mSDtfsCounter, 3193 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2183.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3193 SdHoareTripleChecker+Valid, 3205 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.37ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2237.16ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:23,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3193 Valid, 3205 Invalid, 2 Unknown, 0 Unchecked, 37.37ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2237.16ms Time] [2021-11-12 23:27:23,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-11-12 23:27:23,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2021-11-12 23:27:23,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 1532 states have (on average 1.3426892950391645) internal successors, (2057), 1575 states have internal predecessors, (2057), 571 states have call successors, (571), 104 states have call predecessors, (571), 103 states have return successors, (566), 561 states have call predecessors, (566), 566 states have call successors, (566) [2021-11-12 23:27:23,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 3194 transitions. [2021-11-12 23:27:23,382 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 3194 transitions. Word has length 16 [2021-11-12 23:27:23,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:23,383 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 3194 transitions. [2021-11-12 23:27:23,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:27:23,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 3194 transitions. [2021-11-12 23:27:23,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-12 23:27:23,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:23,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:27:23,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:23,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:27:23,610 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:27:23,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:23,611 INFO L85 PathProgramCache]: Analyzing trace with hash 933280137, now seen corresponding path program 1 times [2021-11-12 23:27:23,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:23,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478217634] [2021-11-12 23:27:23,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:23,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:23,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:23,617 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:23,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:27:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:27,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:27:27,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:28,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:28,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:28,257 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:28,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478217634] [2021-11-12 23:27:28,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478217634] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:27:28,257 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:27:28,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:27:28,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519137828] [2021-11-12 23:27:28,258 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:27:28,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:27:28,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:27:28,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:27:28,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:27:28,260 INFO L87 Difference]: Start difference. First operand 2207 states and 3194 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:27:30,431 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:30,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:30,610 INFO L93 Difference]: Finished difference Result 2209 states and 3195 transitions. [2021-11-12 23:27:30,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:27:30,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-12 23:27:30,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:30,628 INFO L225 Difference]: With dead ends: 2209 [2021-11-12 23:27:30,628 INFO L226 Difference]: Without dead ends: 2206 [2021-11-12 23:27:30,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:27:30,631 INFO L933 BasicCegarLoop]: 3191 mSDtfsCounter, 3178 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2171.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3178 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.90ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2224.36ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:30,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3178 Valid, 3191 Invalid, 2 Unknown, 0 Unchecked, 12.90ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2224.36ms Time] [2021-11-12 23:27:30,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2021-11-12 23:27:30,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2206. [2021-11-12 23:27:30,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2206 states, 1532 states have (on average 1.3420365535248042) internal successors, (2056), 1574 states have internal predecessors, (2056), 570 states have call successors, (570), 104 states have call predecessors, (570), 103 states have return successors, (566), 561 states have call predecessors, (566), 566 states have call successors, (566) [2021-11-12 23:27:30,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 3192 transitions. [2021-11-12 23:27:30,785 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 3192 transitions. Word has length 17 [2021-11-12 23:27:30,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:30,786 INFO L470 AbstractCegarLoop]: Abstraction has 2206 states and 3192 transitions. [2021-11-12 23:27:30,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:27:30,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 3192 transitions. [2021-11-12 23:27:30,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 23:27:30,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:30,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:27:30,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:30,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:27:30,988 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:27:30,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:30,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1134098941, now seen corresponding path program 1 times [2021-11-12 23:27:30,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:30,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811901344] [2021-11-12 23:27:30,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:30,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:30,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:30,993 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:31,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:27:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:35,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:27:35,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:35,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:35,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:35,582 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:35,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811901344] [2021-11-12 23:27:35,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811901344] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:27:35,583 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:27:35,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:27:35,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909628067] [2021-11-12 23:27:35,583 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:27:35,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:27:35,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:27:35,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:27:35,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:27:35,584 INFO L87 Difference]: Start difference. First operand 2206 states and 3192 transitions. 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, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:27:37,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:37,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:37,920 INFO L93 Difference]: Finished difference Result 2208 states and 3193 transitions. [2021-11-12 23:27:37,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:27:37,921 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, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-12 23:27:37,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:37,937 INFO L225 Difference]: With dead ends: 2208 [2021-11-12 23:27:37,937 INFO L226 Difference]: Without dead ends: 2205 [2021-11-12 23:27:37,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:27:37,943 INFO L933 BasicCegarLoop]: 3189 mSDtfsCounter, 3175 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2165.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3175 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.90ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2215.51ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:37,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3175 Valid, 3189 Invalid, 2 Unknown, 0 Unchecked, 10.90ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2215.51ms Time] [2021-11-12 23:27:37,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2021-11-12 23:27:38,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2205. [2021-11-12 23:27:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 1532 states have (on average 1.3413838120104438) internal successors, (2055), 1573 states have internal predecessors, (2055), 569 states have call successors, (569), 104 states have call predecessors, (569), 103 states have return successors, (566), 561 states have call predecessors, (566), 566 states have call successors, (566) [2021-11-12 23:27:38,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 3190 transitions. [2021-11-12 23:27:38,101 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 3190 transitions. Word has length 18 [2021-11-12 23:27:38,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:38,102 INFO L470 AbstractCegarLoop]: Abstraction has 2205 states and 3190 transitions. [2021-11-12 23:27:38,102 INFO L471 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, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:27:38,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 3190 transitions. [2021-11-12 23:27:38,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-12 23:27:38,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:38,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:27:38,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:38,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:27:38,318 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:27:38,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:38,319 INFO L85 PathProgramCache]: Analyzing trace with hash -798336052, now seen corresponding path program 1 times [2021-11-12 23:27:38,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:38,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427533772] [2021-11-12 23:27:38,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:38,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:38,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:38,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:38,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:27:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:42,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:27:42,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:42,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:42,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:42,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:42,652 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:42,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427533772] [2021-11-12 23:27:42,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427533772] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:27:42,652 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:27:42,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:27:42,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404939139] [2021-11-12 23:27:42,653 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:27:42,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:27:42,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:27:42,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:27:42,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:27:42,654 INFO L87 Difference]: Start difference. First operand 2205 states and 3190 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:27:44,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:45,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:45,128 INFO L93 Difference]: Finished difference Result 4994 states and 7160 transitions. [2021-11-12 23:27:45,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:27:45,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-11-12 23:27:45,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:45,159 INFO L225 Difference]: With dead ends: 4994 [2021-11-12 23:27:45,159 INFO L226 Difference]: Without dead ends: 2791 [2021-11-12 23:27:45,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:27:45,175 INFO L933 BasicCegarLoop]: 3581 mSDtfsCounter, 1201 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2196.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 6307 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.12ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2261.90ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:45,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1201 Valid, 6307 Invalid, 11 Unknown, 0 Unchecked, 28.12ms Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2261.90ms Time] [2021-11-12 23:27:45,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2021-11-12 23:27:45,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2788. [2021-11-12 23:27:45,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 1930 states have (on average 1.3233160621761657) internal successors, (2554), 1990 states have internal predecessors, (2554), 688 states have call successors, (688), 172 states have call predecessors, (688), 169 states have return successors, (693), 667 states have call predecessors, (693), 679 states have call successors, (693) [2021-11-12 23:27:45,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3935 transitions. [2021-11-12 23:27:45,470 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3935 transitions. Word has length 19 [2021-11-12 23:27:45,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:45,471 INFO L470 AbstractCegarLoop]: Abstraction has 2788 states and 3935 transitions. [2021-11-12 23:27:45,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:27:45,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3935 transitions. [2021-11-12 23:27:45,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-12 23:27:45,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:45,485 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:27:45,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:45,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:27:45,706 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:27:45,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:45,707 INFO L85 PathProgramCache]: Analyzing trace with hash -587069341, now seen corresponding path program 1 times [2021-11-12 23:27:45,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:45,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503687224] [2021-11-12 23:27:45,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:45,710 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:45,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:45,711 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:45,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:27:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:49,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:27:49,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:50,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:50,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:27:50,569 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:50,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503687224] [2021-11-12 23:27:50,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503687224] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:27:50,570 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:27:50,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:27:50,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177691678] [2021-11-12 23:27:50,570 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:27:50,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:27:50,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:27:50,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:27:50,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:27:50,572 INFO L87 Difference]: Start difference. First operand 2788 states and 3935 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-12 23:27:50,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:50,993 INFO L93 Difference]: Finished difference Result 5605 states and 7919 transitions. [2021-11-12 23:27:50,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:27:50,993 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), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 55 [2021-11-12 23:27:50,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:51,019 INFO L225 Difference]: With dead ends: 5605 [2021-11-12 23:27:51,019 INFO L226 Difference]: Without dead ends: 2828 [2021-11-12 23:27:51,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:27:51,039 INFO L933 BasicCegarLoop]: 3176 mSDtfsCounter, 58 mSDsluCounter, 6250 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 126.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 9426 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.84ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 134.31ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:51,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 9426 Invalid, 25 Unknown, 0 Unchecked, 21.84ms Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 134.31ms Time] [2021-11-12 23:27:51,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2021-11-12 23:27:51,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2828. [2021-11-12 23:27:51,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 1962 states have (on average 1.3236493374108054) internal successors, (2597), 2022 states have internal predecessors, (2597), 696 states have call successors, (696), 172 states have call predecessors, (696), 169 states have return successors, (701), 675 states have call predecessors, (701), 687 states have call successors, (701) [2021-11-12 23:27:51,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 3994 transitions. [2021-11-12 23:27:51,300 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 3994 transitions. Word has length 55 [2021-11-12 23:27:51,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:51,301 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 3994 transitions. [2021-11-12 23:27:51,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-12 23:27:51,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 3994 transitions. [2021-11-12 23:27:51,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-12 23:27:51,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:51,304 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 23:27:51,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:51,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:27:51,518 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:27:51,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:51,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1997599171, now seen corresponding path program 1 times [2021-11-12 23:27:51,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:51,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906902317] [2021-11-12 23:27:51,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:51,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:51,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:51,524 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:51,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:27:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:55,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:27:55,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:27:55,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:27:56,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:27:56,167 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:56,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906902317] [2021-11-12 23:27:56,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906902317] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:27:56,168 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:27:56,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:27:56,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239462805] [2021-11-12 23:27:56,168 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:27:56,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:27:56,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:27:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:27:56,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:27:56,170 INFO L87 Difference]: Start difference. First operand 2828 states and 3994 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-12 23:27:56,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:56,455 INFO L93 Difference]: Finished difference Result 5647 states and 8045 transitions. [2021-11-12 23:27:56,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:27:56,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 59 [2021-11-12 23:27:56,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:56,481 INFO L225 Difference]: With dead ends: 5647 [2021-11-12 23:27:56,481 INFO L226 Difference]: Without dead ends: 2830 [2021-11-12 23:27:56,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:27:56,508 INFO L933 BasicCegarLoop]: 3167 mSDtfsCounter, 0 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6327 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.79ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.28ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:56,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6327 Invalid, 14 Unknown, 0 Unchecked, 13.79ms Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 60.28ms Time] [2021-11-12 23:27:56,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2021-11-12 23:27:56,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 2828. [2021-11-12 23:27:56,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 1962 states have (on average 1.32059123343527) internal successors, (2591), 2022 states have internal predecessors, (2591), 696 states have call successors, (696), 172 states have call predecessors, (696), 169 states have return successors, (701), 675 states have call predecessors, (701), 687 states have call successors, (701) [2021-11-12 23:27:56,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 3988 transitions. [2021-11-12 23:27:56,765 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 3988 transitions. Word has length 59 [2021-11-12 23:27:56,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:56,767 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 3988 transitions. [2021-11-12 23:27:56,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-12 23:27:56,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 3988 transitions. [2021-11-12 23:27:56,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:27:56,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:56,772 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 23:27:56,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:56,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:27:56,998 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:27:56,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:56,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1160460849, now seen corresponding path program 1 times [2021-11-12 23:27:57,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:57,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344974447] [2021-11-12 23:27:57,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:57,003 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:57,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:57,004 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:57,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:28:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:28:01,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:28:01,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:28:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:28:02,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:28:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:28:02,320 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:28:02,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344974447] [2021-11-12 23:28:02,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344974447] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:28:02,320 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:28:02,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:28:02,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134991693] [2021-11-12 23:28:02,321 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:28:02,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:28:02,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:28:02,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:28:02,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:28:02,322 INFO L87 Difference]: Start difference. First operand 2828 states and 3988 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:28:04,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:28:04,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:28:04,748 INFO L93 Difference]: Finished difference Result 4642 states and 6495 transitions. [2021-11-12 23:28:04,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:28:04,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2021-11-12 23:28:04,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:28:04,774 INFO L225 Difference]: With dead ends: 4642 [2021-11-12 23:28:04,774 INFO L226 Difference]: Without dead ends: 2350 [2021-11-12 23:28:04,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:28:04,791 INFO L933 BasicCegarLoop]: 3066 mSDtfsCounter, 2146 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2210.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2146 SdHoareTripleChecker+Valid, 4068 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.25ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2266.73ms IncrementalHoareTripleChecker+Time [2021-11-12 23:28:04,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2146 Valid, 4068 Invalid, 7 Unknown, 0 Unchecked, 11.25ms Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2266.73ms Time] [2021-11-12 23:28:04,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2021-11-12 23:28:04,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2350. [2021-11-12 23:28:04,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2350 states, 1637 states have (on average 1.3091020158827122) internal successors, (2143), 1682 states have internal predecessors, (2143), 555 states have call successors, (555), 161 states have call predecessors, (555), 157 states have return successors, (542), 535 states have call predecessors, (542), 542 states have call successors, (542) [2021-11-12 23:28:04,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 3240 transitions. [2021-11-12 23:28:04,956 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 3240 transitions. Word has length 65 [2021-11-12 23:28:04,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:28:04,958 INFO L470 AbstractCegarLoop]: Abstraction has 2350 states and 3240 transitions. [2021-11-12 23:28:04,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:28:04,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 3240 transitions. [2021-11-12 23:28:04,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:28:04,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:28:04,963 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:28:05,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:28:05,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:28:05,190 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:28:05,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:28:05,191 INFO L85 PathProgramCache]: Analyzing trace with hash 904423170, now seen corresponding path program 1 times [2021-11-12 23:28:05,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:28:05,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633222730] [2021-11-12 23:28:05,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:28:05,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:28:05,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:28:05,196 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:28:05,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:28:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:28:09,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:28:09,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:28:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:28:09,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:28:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:28:10,334 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:28:10,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633222730] [2021-11-12 23:28:10,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633222730] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:28:10,334 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:28:10,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-12 23:28:10,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129206713] [2021-11-12 23:28:10,335 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:28:10,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:28:10,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:28:10,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:28:10,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:28:10,336 INFO L87 Difference]: Start difference. First operand 2350 states and 3240 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-12 23:28:10,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:28:10,766 INFO L93 Difference]: Finished difference Result 2382 states and 3290 transitions. [2021-11-12 23:28:10,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:28:10,767 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 65 [2021-11-12 23:28:10,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:28:10,786 INFO L225 Difference]: With dead ends: 2382 [2021-11-12 23:28:10,786 INFO L226 Difference]: Without dead ends: 2372 [2021-11-12 23:28:10,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:28:10,790 INFO L933 BasicCegarLoop]: 2566 mSDtfsCounter, 37 mSDsluCounter, 12814 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 259.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 15380 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.86ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 277.05ms IncrementalHoareTripleChecker+Time [2021-11-12 23:28:10,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 15380 Invalid, 38 Unknown, 0 Unchecked, 30.86ms Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 277.05ms Time] [2021-11-12 23:28:10,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2021-11-12 23:28:10,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2355. [2021-11-12 23:28:10,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 1641 states have (on average 1.3083485679463742) internal successors, (2147), 1686 states have internal predecessors, (2147), 555 states have call successors, (555), 161 states have call predecessors, (555), 158 states have return successors, (545), 536 states have call predecessors, (545), 542 states have call successors, (545) [2021-11-12 23:28:10,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3247 transitions. [2021-11-12 23:28:10,964 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3247 transitions. Word has length 65 [2021-11-12 23:28:10,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:28:10,964 INFO L470 AbstractCegarLoop]: Abstraction has 2355 states and 3247 transitions. [2021-11-12 23:28:10,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-12 23:28:10,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3247 transitions. [2021-11-12 23:28:10,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-12 23:28:10,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:28:10,968 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:28:11,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:28:11,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:28:11,183 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:28:11,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:28:11,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1585041309, now seen corresponding path program 1 times [2021-11-12 23:28:11,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:28:11,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416390067] [2021-11-12 23:28:11,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:28:11,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:28:11,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:28:11,189 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:28:11,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7068116c-76aa-45b0-a4d3-ff9e19005049/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process