./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-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_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/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_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/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_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/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 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:33:20,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:33:20,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:33:20,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:33:20,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:33:20,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:33:20,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:33:20,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:33:20,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:33:20,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:33:20,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:33:20,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:33:20,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:33:20,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:33:20,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:33:20,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:33:20,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:33:20,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:33:20,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:33:20,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:33:20,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:33:20,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:33:20,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:33:20,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:33:20,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:33:20,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:33:20,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:33:20,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:33:20,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:33:20,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:33:20,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:33:20,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:33:20,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:33:20,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:33:20,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:33:20,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:33:20,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:33:20,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:33:20,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:33:20,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:33:20,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:33:20,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:33:20,414 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:33:20,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:33:20,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:33:20,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:33:20,417 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:33:20,417 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:33:20,417 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:33:20,417 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:33:20,424 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:33:20,424 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:33:20,425 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:33:20,426 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:33:20,426 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:33:20,426 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:33:20,426 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:33:20,427 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:33:20,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:33:20,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:33:20,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:33:20,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:33:20,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:33:20,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:33:20,429 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:33:20,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:33:20,429 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:33:20,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:33:20,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:33:20,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:33:20,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:33:20,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:33:20,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:33:20,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:33:20,433 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:33:20,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:33:20,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:33:20,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:33:20,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:33:20,434 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_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 [2021-11-13 01:33:20,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:33:20,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:33:20,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:33:20,795 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:33:20,796 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:33:20,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-13 01:33:20,884 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/data/3531c93f3/1cb364a4f5e6466ca4c0fef70b66aa89/FLAG868d7c977 [2021-11-13 01:33:22,135 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:33:22,135 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-13 01:33:22,211 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/data/3531c93f3/1cb364a4f5e6466ca4c0fef70b66aa89/FLAG868d7c977 [2021-11-13 01:33:22,321 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/data/3531c93f3/1cb364a4f5e6466ca4c0fef70b66aa89 [2021-11-13 01:33:22,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:33:22,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:33:22,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:33:22,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:33:22,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:33:22,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:33:22" (1/1) ... [2021-11-13 01:33:22,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82b47d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:22, skipping insertion in model container [2021-11-13 01:33:22,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:33:22" (1/1) ... [2021-11-13 01:33:22,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:33:22,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:33:24,542 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,027 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,034 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,076 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,080 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,098 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,099 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,100 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,101 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,124 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,142 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,207 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,217 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,234 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,255 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,439 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,440 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,443 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,468 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,476 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,483 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,495 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,504 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,513 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,521 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,528 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,591 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,597 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,627 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,628 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,634 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,644 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,645 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,646 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,661 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,671 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,691 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,716 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,717 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,724 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,726 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,740 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,747 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,823 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,824 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,856 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,863 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,869 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,870 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,876 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,884 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,902 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,909 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,923 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,924 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,925 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,925 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,926 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,938 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,945 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,945 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,948 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,949 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:25,958 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:33:26,057 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_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-13 01:33:26,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:33:26,293 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) [2021-11-13 01:33:26,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3988a72a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:26, skipping insertion in model container [2021-11-13 01:33:26,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:33:26,295 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:33:26,296 INFO L158 Benchmark]: Toolchain (without parser) took 3968.61ms. Allocated memory is still 148.9MB. Free memory was 117.1MB in the beginning and 78.7MB in the end (delta: 38.5MB). Peak memory consumption was 100.2MB. Max. memory is 16.1GB. [2021-11-13 01:33:26,297 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 98.6MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:33:26,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3963.61ms. Allocated memory is still 148.9MB. Free memory was 117.1MB in the beginning and 78.7MB in the end (delta: 38.5MB). Peak memory consumption was 100.2MB. Max. memory is 16.1GB. [2021-11-13 01:33:26,299 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 98.6MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3963.61ms. Allocated memory is still 148.9MB. Free memory was 117.1MB in the beginning and 78.7MB in the end (delta: 38.5MB). Peak memory consumption was 100.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6947]: 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_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/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_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/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_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/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 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:33:28,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:33:28,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:33:28,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:33:28,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:33:28,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:33:28,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:33:28,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:33:28,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:33:28,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:33:28,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:33:28,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:33:28,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:33:28,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:33:28,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:33:28,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:33:28,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:33:28,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:33:28,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:33:28,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:33:28,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:33:28,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:33:28,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:33:28,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:33:28,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:33:28,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:33:28,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:33:28,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:33:28,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:33:28,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:33:28,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:33:28,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:33:28,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:33:28,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:33:28,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:33:28,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:33:28,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:33:28,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:33:28,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:33:28,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:33:28,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:33:28,694 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:33:28,742 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:33:28,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:33:28,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:33:28,744 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:33:28,745 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:33:28,745 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:33:28,745 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:33:28,746 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:33:28,746 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:33:28,751 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:33:28,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:33:28,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:33:28,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:33:28,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:33:28,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:33:28,754 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:33:28,755 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:33:28,755 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:33:28,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:33:28,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:33:28,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:33:28,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:33:28,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:33:28,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:33:28,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:33:28,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:33:28,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:33:28,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:33:28,757 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:33:28,758 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:33:28,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:33:28,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:33:28,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:33:28,759 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_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 [2021-11-13 01:33:29,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:33:29,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:33:29,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:33:29,221 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:33:29,222 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:33:29,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-13 01:33:29,304 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/data/baffa84ea/863b28440b244dfeb88561854eac0147/FLAGa2b2513bb [2021-11-13 01:33:30,427 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:33:30,428 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-13 01:33:30,479 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/data/baffa84ea/863b28440b244dfeb88561854eac0147/FLAGa2b2513bb [2021-11-13 01:33:30,783 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/data/baffa84ea/863b28440b244dfeb88561854eac0147 [2021-11-13 01:33:30,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:33:30,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:33:30,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:33:30,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:33:30,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:33:30,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:33:30" (1/1) ... [2021-11-13 01:33:30,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7079cca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:30, skipping insertion in model container [2021-11-13 01:33:30,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:33:30" (1/1) ... [2021-11-13 01:33:30,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:33:31,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:33:34,648 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_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-13 01:33:34,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:33:34,885 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:33:34,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:33:35,507 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_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-13 01:33:35,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:33:35,544 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:33:36,151 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_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-13 01:33:36,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:33:36,531 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:33:36,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:36 WrapperNode [2021-11-13 01:33:36,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:33:36,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:33:36,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:33:36,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:33:36,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:36" (1/1) ... [2021-11-13 01:33:36,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:36" (1/1) ... [2021-11-13 01:33:37,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:33:37,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:33:37,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:33:37,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:33:37,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:36" (1/1) ... [2021-11-13 01:33:37,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:36" (1/1) ... [2021-11-13 01:33:37,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:36" (1/1) ... [2021-11-13 01:33:37,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:36" (1/1) ... [2021-11-13 01:33:37,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:36" (1/1) ... [2021-11-13 01:33:37,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:36" (1/1) ... [2021-11-13 01:33:37,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:36" (1/1) ... [2021-11-13 01:33:37,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:33:37,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:33:37,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:33:37,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:33:37,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:36" (1/1) ... [2021-11-13 01:33:37,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:33:37,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:33:37,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:33:37,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:33:37,615 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-11-13 01:33:37,615 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-11-13 01:33:37,615 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-13 01:33:37,615 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-13 01:33:37,616 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-13 01:33:37,616 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-13 01:33:37,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 01:33:37,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 01:33:37,616 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-13 01:33:37,616 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_fabric_acl [2021-11-13 01:33:37,617 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_fabric_acl [2021-11-13 01:33:37,617 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 01:33:37,617 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 01:33:37,617 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_access_ok [2021-11-13 01:33:37,617 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_access_ok [2021-11-13 01:33:37,617 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_close_session [2021-11-13 01:33:37,617 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_close_session [2021-11-13 01:33:37,618 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 01:33:37,618 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-11-13 01:33:37,618 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-11-13 01:33:37,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:33:37,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-13 01:33:37,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:33:37,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tcm_vhost_mutex [2021-11-13 01:33:37,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tcm_vhost_mutex [2021-11-13 01:33:37,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:33:37,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 01:33:37,619 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-13 01:33:37,619 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-13 01:33:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 01:33:37,620 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 01:33:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-13 01:33:37,620 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-13 01:33:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-11-13 01:33:37,620 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-11-13 01:33:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tpg [2021-11-13 01:33:37,621 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tpg [2021-11-13 01:33:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-13 01:33:37,621 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-13 01:33:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-13 01:33:37,622 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-13 01:33:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-13 01:33:37,622 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-13 01:33:37,623 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-11-13 01:33:37,623 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-11-13 01:33:37,623 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-11-13 01:33:37,623 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-11-13 01:33:37,623 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-13 01:33:37,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-13 01:33:37,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 01:33:37,624 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 01:33:37,625 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-11-13 01:33:37,625 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-11-13 01:33:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-13 01:33:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-13 01:33:37,626 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-13 01:33:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_complete_cmd [2021-11-13 01:33:37,627 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_complete_cmd [2021-11-13 01:33:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-13 01:33:37,627 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-13 01:33:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-11-13 01:33:37,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-11-13 01:33:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-11-13 01:33:37,629 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-11-13 01:33:37,629 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-11-13 01:33:37,629 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-11-13 01:33:37,629 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-13 01:33:37,629 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-13 01:33:37,629 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id [2021-11-13 01:33:37,630 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id [2021-11-13 01:33:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tv_tpg_mutex [2021-11-13 01:33:37,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tv_tpg_mutex [2021-11-13 01:33:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:33:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:33:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 01:33:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 01:33:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 01:33:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-11-13 01:33:37,632 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-11-13 01:33:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 01:33:37,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 01:33:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 01:33:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-13 01:33:37,633 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-13 01:33:37,633 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-11-13 01:33:37,634 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-11-13 01:33:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-11-13 01:33:37,634 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-11-13 01:33:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-13 01:33:37,634 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-13 01:33:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-11-13 01:33:37,635 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-11-13 01:33:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user [2021-11-13 01:33:37,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user [2021-11-13 01:33:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-11-13 01:33:37,637 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-11-13 01:33:37,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-11-13 01:33:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-11-13 01:33:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-11-13 01:33:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-11-13 01:33:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-13 01:33:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-13 01:33:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_alloc_fabric_acl [2021-11-13 01:33:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_alloc_fabric_acl [2021-11-13 01:33:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 01:33:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tcm_vhost_mutex [2021-11-13 01:33:37,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tcm_vhost_mutex [2021-11-13 01:33:37,640 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_ioctl [2021-11-13 01:33:37,640 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_ioctl [2021-11-13 01:33:37,640 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-13 01:33:37,640 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-13 01:33:37,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:33:37,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:33:37,642 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tport [2021-11-13 01:33:37,644 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tport [2021-11-13 01:33:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-13 01:33:37,645 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-13 01:33:37,645 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-13 01:33:37,646 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-13 01:33:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:33:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-11-13 01:33:37,648 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-11-13 01:33:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:33:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 01:33:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 01:33:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 01:33:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-11-13 01:33:37,655 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-11-13 01:33:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 01:33:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-11-13 01:33:37,655 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-11-13 01:33:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-13 01:33:37,656 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-13 01:33:37,656 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-11-13 01:33:37,656 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-11-13 01:33:37,656 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-13 01:33:37,656 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-13 01:33:37,656 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-11-13 01:33:37,656 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-11-13 01:33:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 01:33:37,657 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 01:33:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 01:33:37,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 01:33:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-13 01:33:37,657 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-13 01:33:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-11-13 01:33:37,658 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-11-13 01:33:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-13 01:33:37,658 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-13 01:33:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-13 01:33:37,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-13 01:33:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-11-13 01:33:37,658 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-11-13 01:33:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:33:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-13 01:33:37,659 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-13 01:33:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-11-13 01:33:37,659 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-11-13 01:33:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:33:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-13 01:33:37,660 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-13 01:33:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_cmd [2021-11-13 01:33:37,660 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_cmd [2021-11-13 01:33:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_set_default_node_attrs [2021-11-13 01:33:37,660 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_set_default_node_attrs [2021-11-13 01:33:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nexus [2021-11-13 01:33:37,660 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nexus [2021-11-13 01:33:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:33:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 01:33:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 01:33:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 01:33:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:33:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-11-13 01:33:37,661 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-11-13 01:33:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-13 01:33:37,662 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-13 01:33:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tv_tpg_mutex [2021-11-13 01:33:37,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tv_tpg_mutex [2021-11-13 01:33:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-13 01:33:37,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-13 01:33:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-13 01:33:37,663 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-13 01:33:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_fabric_proto_ident [2021-11-13 01:33:37,663 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_fabric_proto_ident [2021-11-13 01:33:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-13 01:33:37,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-13 01:33:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure get_user_pages_fast [2021-11-13 01:33:37,663 INFO L138 BoogieDeclarations]: Found implementation of procedure get_user_pages_fast [2021-11-13 01:33:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure transport_generic_free_cmd [2021-11-13 01:33:37,664 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_generic_free_cmd [2021-11-13 01:33:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_deregister [2021-11-13 01:33:37,664 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_deregister [2021-11-13 01:33:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-13 01:33:37,664 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-13 01:33:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-11-13 01:33:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-11-13 01:33:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_command_size [2021-11-13 01:33:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_command_size [2021-11-13 01:33:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_dump_proto_id [2021-11-13 01:33:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_dump_proto_id [2021-11-13 01:33:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-11-13 01:33:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-11-13 01:33:37,666 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 01:33:37,666 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 01:33:37,666 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-11-13 01:33:37,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-11-13 01:33:37,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 01:33:37,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 01:33:37,666 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_clear_endpoint [2021-11-13 01:33:37,667 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_clear_endpoint [2021-11-13 01:33:37,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 01:33:37,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 01:33:37,667 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-11-13 01:33:37,667 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-11-13 01:33:37,667 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-13 01:33:37,667 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-13 01:33:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 01:33:37,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 01:33:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_flush_vq [2021-11-13 01:33:37,668 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_flush_vq [2021-11-13 01:33:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-11-13 01:33:37,668 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-11-13 01:33:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-11-13 01:33:37,669 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-11-13 01:33:37,669 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-13 01:33:37,669 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-13 01:33:37,669 INFO L130 BoogieDeclarations]: Found specification of procedure sas_parse_pr_out_transport_id [2021-11-13 01:33:37,669 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_parse_pr_out_transport_id [2021-11-13 01:33:37,669 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-11-13 01:33:37,669 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-11-13 01:33:37,670 INFO L130 BoogieDeclarations]: Found specification of procedure utsname [2021-11-13 01:33:37,670 INFO L138 BoogieDeclarations]: Found implementation of procedure utsname [2021-11-13 01:33:37,670 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-11-13 01:33:37,670 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-11-13 01:33:37,670 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-13 01:33:37,670 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-13 01:33:37,670 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-11-13 01:33:37,671 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-11-13 01:33:37,671 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-13 01:33:37,671 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-13 01:33:37,672 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used [2021-11-13 01:33:37,676 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used [2021-11-13 01:33:37,676 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-13 01:33:37,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-13 01:33:37,676 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-13 01:33:37,676 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-13 01:33:37,677 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-13 01:33:37,677 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-13 01:33:37,677 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nodeacl [2021-11-13 01:33:37,677 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nodeacl [2021-11-13 01:33:37,678 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-11-13 01:33:37,679 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-11-13 01:33:37,679 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-11-13 01:33:37,679 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-11-13 01:33:37,680 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id_len [2021-11-13 01:33:37,680 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id_len [2021-11-13 01:34:20,538 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume #t~switch217;#res := ~ret~1; [2021-11-13 01:34:20,539 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume !#t~switch217;#t~switch217 := #t~switch217 || 4bv32 == ~size; [2021-11-13 01:34:20,539 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume 0bv64 != ~tmp___1~4;#res := ~ret~1; [2021-11-13 01:34:20,539 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume !(0bv64 != ~tmp___1~4);#res := ~ret~1; [2021-11-13 01:34:20,539 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7449: havoc #t~switch217; [2021-11-13 01:34:20,540 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7474: SUMMARY for call #t~ret218 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != ~ret~1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-13 01:34:20,540 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume #t~switch217; [2021-11-13 01:34:20,540 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume !#t~switch217;#t~switch217 := #t~switch217 || 16bv32 == ~size; [2021-11-13 01:34:20,540 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7474-1: ~tmp___0~9 := #t~ret218;havoc #t~ret218; [2021-11-13 01:34:20,540 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume #t~switch217;#res := ~ret~1; [2021-11-13 01:34:20,541 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497-1: ~tmp___2~3 := #t~ret220;havoc #t~ret220;#res := ~tmp___2~3[32:0]; [2021-11-13 01:34:20,541 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497: SUMMARY for call #t~ret220 := copy_user_generic(~dst.base, ~dst.offset, ~src.base, ~src.offset, ~size); srcloc: null [2021-11-13 01:34:20,541 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !#t~switch217;#t~switch217 := #t~switch217 || 2bv32 == ~size; [2021-11-13 01:34:20,541 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume #t~switch217;#res := ~ret~1; [2021-11-13 01:34:20,541 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume !#t~switch217;#t~switch217 := #t~switch217 || 8bv32 == ~size; [2021-11-13 01:34:20,542 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7487-1: ~tmp___1~4 := #t~ret219;havoc #t~ret219; [2021-11-13 01:34:20,542 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7487: SUMMARY for call #t~ret219 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != ~ret~1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-13 01:34:20,542 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume #t~switch217; [2021-11-13 01:34:20,542 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume !#t~switch217;#t~switch217 := true; [2021-11-13 01:34:20,542 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume 0bv64 != ~tmp___0~9;#res := ~ret~1; [2021-11-13 01:34:20,543 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume !(0bv64 != ~tmp___0~9);#res := ~ret~1; [2021-11-13 01:34:20,543 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume #t~switch217; [2021-11-13 01:34:20,543 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume !#t~switch217; [2021-11-13 01:34:20,543 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume #t~switch217;#res := ~ret~1; [2021-11-13 01:34:20,543 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume !#t~switch217;#t~switch217 := #t~switch217 || 10bv32 == ~size; [2021-11-13 01:35:10,244 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:35:10,244 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 01:35:10,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:35:10 BoogieIcfgContainer [2021-11-13 01:35:10,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:35:10,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:35:10,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:35:10,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:35:10,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:33:30" (1/3) ... [2021-11-13 01:35:10,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29868bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:35:10, skipping insertion in model container [2021-11-13 01:35:10,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:36" (2/3) ... [2021-11-13 01:35:10,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29868bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:35:10, skipping insertion in model container [2021-11-13 01:35:10,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:35:10" (3/3) ... [2021-11-13 01:35:10,259 INFO L111 eAbstractionObserver]: Analyzing ICFG main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-13 01:35:10,265 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:35:10,265 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:35:10,332 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:35:10,339 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 [2021-11-13 01:35:10,339 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:35:10,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 2407 states, 1666 states have (on average 1.3475390156062426) internal successors, (2245), 1716 states have internal predecessors, (2245), 628 states have call successors, (628), 111 states have call predecessors, (628), 111 states have return successors, (628), 616 states have call predecessors, (628), 628 states have call successors, (628) [2021-11-13 01:35:10,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 01:35:10,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:35:10,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:35:10,415 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:35:10,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:35:10,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2087497073, now seen corresponding path program 1 times [2021-11-13 01:35:10,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:35:10,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006084670] [2021-11-13 01:35:10,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:10,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:35:10,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:35:10,459 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:35:10,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:35:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:27,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:35:27,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:35:27,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:35:27,487 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:35:27,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006084670] [2021-11-13 01:35:27,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006084670] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:35:27,488 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:35:27,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:35:27,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651022050] [2021-11-13 01:35:27,491 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:35:27,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:35:27,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:35:27,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:35:27,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:35:27,529 INFO L87 Difference]: Start difference. First operand has 2407 states, 1666 states have (on average 1.3475390156062426) internal successors, (2245), 1716 states have internal predecessors, (2245), 628 states have call successors, (628), 111 states have call predecessors, (628), 111 states have return successors, (628), 616 states have call predecessors, (628), 628 states have call successors, (628) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-11-13 01:35:29,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:35:30,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:35:30,425 INFO L93 Difference]: Finished difference Result 4788 states and 7060 transitions. [2021-11-13 01:35:30,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:35:30,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 15 [2021-11-13 01:35:30,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:35:30,479 INFO L225 Difference]: With dead ends: 4788 [2021-11-13 01:35:30,479 INFO L226 Difference]: Without dead ends: 2391 [2021-11-13 01:35:30,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:35:30,513 INFO L933 BasicCegarLoop]: 3483 mSDtfsCounter, 3472 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2398.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3472 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2516.28ms IncrementalHoareTripleChecker+Time [2021-11-13 01:35:30,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3472 Valid, 3483 Invalid, 2 Unknown, 0 Unchecked, 38.21ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2516.28ms Time] [2021-11-13 01:35:30,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2021-11-13 01:35:30,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2391. [2021-11-13 01:35:30,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2391 states, 1653 states have (on average 1.3424077434966728) internal successors, (2219), 1700 states have internal predecessors, (2219), 627 states have call successors, (627), 111 states have call predecessors, (627), 110 states have return successors, (616), 604 states have call predecessors, (616), 616 states have call successors, (616) [2021-11-13 01:35:30,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2391 states to 2391 states and 3462 transitions. [2021-11-13 01:35:30,823 INFO L78 Accepts]: Start accepts. Automaton has 2391 states and 3462 transitions. Word has length 15 [2021-11-13 01:35:30,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:35:30,824 INFO L470 AbstractCegarLoop]: Abstraction has 2391 states and 3462 transitions. [2021-11-13 01:35:30,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-11-13 01:35:30,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2391 states and 3462 transitions. [2021-11-13 01:35:30,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-13 01:35:30,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:35:30,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:35:30,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-13 01:35:31,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:35:31,043 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:35:31,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:35:31,044 INFO L85 PathProgramCache]: Analyzing trace with hash 286775544, now seen corresponding path program 1 times [2021-11-13 01:35:31,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:35:31,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618425071] [2021-11-13 01:35:31,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:31,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:35:31,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:35:31,056 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:35:31,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:35:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:47,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:35:47,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:47,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:35:47,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:47,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:35:47,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:35:47,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618425071] [2021-11-13 01:35:47,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618425071] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:35:47,905 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:35:47,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:35:47,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769467318] [2021-11-13 01:35:47,906 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:35:47,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:35:47,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:35:47,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:35:47,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:35:47,909 INFO L87 Difference]: Start difference. First operand 2391 states and 3462 transitions. 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) [2021-11-13 01:35:50,318 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:35:50,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:35:50,552 INFO L93 Difference]: Finished difference Result 2393 states and 3463 transitions. [2021-11-13 01:35:50,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:35:50,553 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 [2021-11-13 01:35:50,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:35:50,576 INFO L225 Difference]: With dead ends: 2393 [2021-11-13 01:35:50,576 INFO L226 Difference]: Without dead ends: 2390 [2021-11-13 01:35:50,578 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 [2021-11-13 01:35:50,581 INFO L933 BasicCegarLoop]: 3459 mSDtfsCounter, 3447 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2399.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3447 SdHoareTripleChecker+Valid, 3459 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.74ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2500.89ms IncrementalHoareTripleChecker+Time [2021-11-13 01:35:50,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3447 Valid, 3459 Invalid, 2 Unknown, 0 Unchecked, 13.74ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2500.89ms Time] [2021-11-13 01:35:50,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-11-13 01:35:50,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 2390. [2021-11-13 01:35:50,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 1653 states have (on average 1.3418027828191168) internal successors, (2218), 1699 states have internal predecessors, (2218), 626 states have call successors, (626), 111 states have call predecessors, (626), 110 states have return successors, (616), 604 states have call predecessors, (616), 616 states have call successors, (616) [2021-11-13 01:35:50,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 3460 transitions. [2021-11-13 01:35:50,740 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 3460 transitions. Word has length 16 [2021-11-13 01:35:50,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:35:50,741 INFO L470 AbstractCegarLoop]: Abstraction has 2390 states and 3460 transitions. [2021-11-13 01:35:50,741 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) [2021-11-13 01:35:50,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 3460 transitions. [2021-11-13 01:35:50,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 01:35:50,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:35:50,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:35:50,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:35:50,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:35:50,967 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:35:50,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:35:50,967 INFO L85 PathProgramCache]: Analyzing trace with hash 298987860, now seen corresponding path program 1 times [2021-11-13 01:35:50,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:35:50,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256477219] [2021-11-13 01:35:50,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:50,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:35:50,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:35:50,985 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:35:50,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:36:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:07,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:36:07,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:07,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:07,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:07,632 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:36:07,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256477219] [2021-11-13 01:36:07,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256477219] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:36:07,633 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:36:07,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:36:07,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569437441] [2021-11-13 01:36:07,633 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:07,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:36:07,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:36:07,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:36:07,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:36:07,634 INFO L87 Difference]: Start difference. First operand 2390 states and 3460 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) [2021-11-13 01:36:10,022 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:36:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:10,252 INFO L93 Difference]: Finished difference Result 2392 states and 3461 transitions. [2021-11-13 01:36:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:36:10,253 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 [2021-11-13 01:36:10,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:10,273 INFO L225 Difference]: With dead ends: 2392 [2021-11-13 01:36:10,273 INFO L226 Difference]: Without dead ends: 2389 [2021-11-13 01:36:10,275 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 [2021-11-13 01:36:10,278 INFO L933 BasicCegarLoop]: 3457 mSDtfsCounter, 3444 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2380.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3444 SdHoareTripleChecker+Valid, 3457 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.89ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2477.01ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:10,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3444 Valid, 3457 Invalid, 2 Unknown, 0 Unchecked, 12.89ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2477.01ms Time] [2021-11-13 01:36:10,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-13 01:36:10,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2389. [2021-11-13 01:36:10,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2389 states, 1653 states have (on average 1.3411978221415608) internal successors, (2217), 1698 states have internal predecessors, (2217), 625 states have call successors, (625), 111 states have call predecessors, (625), 110 states have return successors, (616), 604 states have call predecessors, (616), 616 states have call successors, (616) [2021-11-13 01:36:10,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 3458 transitions. [2021-11-13 01:36:10,445 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 3458 transitions. Word has length 17 [2021-11-13 01:36:10,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:10,445 INFO L470 AbstractCegarLoop]: Abstraction has 2389 states and 3458 transitions. [2021-11-13 01:36:10,446 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) [2021-11-13 01:36:10,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 3458 transitions. [2021-11-13 01:36:10,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 01:36:10,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:10,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:36:10,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:36:10,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:36:10,648 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:36:10,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:10,649 INFO L85 PathProgramCache]: Analyzing trace with hash 677574523, now seen corresponding path program 1 times [2021-11-13 01:36:10,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:36:10,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276758085] [2021-11-13 01:36:10,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:10,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:36:10,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:36:10,666 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:36:10,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:36:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:26,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:36:26,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:26,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:27,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:27,117 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:36:27,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276758085] [2021-11-13 01:36:27,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276758085] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:36:27,118 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:36:27,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:36:27,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893029971] [2021-11-13 01:36:27,118 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:27,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:36:27,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:36:27,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:36:27,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:36:27,120 INFO L87 Difference]: Start difference. First operand 2389 states and 3458 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) [2021-11-13 01:36:29,525 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:36:29,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:29,885 INFO L93 Difference]: Finished difference Result 5075 states and 7243 transitions. [2021-11-13 01:36:29,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:36:29,885 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 [2021-11-13 01:36:29,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:29,908 INFO L225 Difference]: With dead ends: 5075 [2021-11-13 01:36:29,908 INFO L226 Difference]: Without dead ends: 2730 [2021-11-13 01:36:29,920 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 [2021-11-13 01:36:29,922 INFO L933 BasicCegarLoop]: 3599 mSDtfsCounter, 1868 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2435.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1868 SdHoareTripleChecker+Valid, 5549 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.65ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2549.72ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:29,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1868 Valid, 5549 Invalid, 12 Unknown, 0 Unchecked, 28.65ms Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2549.72ms Time] [2021-11-13 01:36:29,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-11-13 01:36:30,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2727. [2021-11-13 01:36:30,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 1879 states have (on average 1.3166577967003725) internal successors, (2474), 1931 states have internal predecessors, (2474), 686 states have call successors, (686), 163 states have call predecessors, (686), 161 states have return successors, (677), 662 states have call predecessors, (677), 675 states have call successors, (677) [2021-11-13 01:36:30,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3837 transitions. [2021-11-13 01:36:30,111 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3837 transitions. Word has length 18 [2021-11-13 01:36:30,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:30,112 INFO L470 AbstractCegarLoop]: Abstraction has 2727 states and 3837 transitions. [2021-11-13 01:36:30,112 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) [2021-11-13 01:36:30,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3837 transitions. [2021-11-13 01:36:30,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 01:36:30,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:30,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:36:30,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:36:30,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:36:30,339 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:36:30,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:30,340 INFO L85 PathProgramCache]: Analyzing trace with hash -471135945, now seen corresponding path program 1 times [2021-11-13 01:36:30,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:36:30,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457554708] [2021-11-13 01:36:30,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:30,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:36:30,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:36:30,352 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:36:30,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:36:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:46,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:36:46,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:36:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:46,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:46,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:46,571 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:36:46,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457554708] [2021-11-13 01:36:46,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457554708] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:36:46,572 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:36:46,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:36:46,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912296032] [2021-11-13 01:36:46,572 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:46,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:36:46,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:36:46,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:36:46,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:36:46,573 INFO L87 Difference]: Start difference. First operand 2727 states and 3837 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) [2021-11-13 01:36:48,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:36:49,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:49,301 INFO L93 Difference]: Finished difference Result 2756 states and 3860 transitions. [2021-11-13 01:36:49,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:36:49,302 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 [2021-11-13 01:36:49,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:49,325 INFO L225 Difference]: With dead ends: 2756 [2021-11-13 01:36:49,325 INFO L226 Difference]: Without dead ends: 2752 [2021-11-13 01:36:49,327 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 [2021-11-13 01:36:49,328 INFO L933 BasicCegarLoop]: 3452 mSDtfsCounter, 3370 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2428.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3370 SdHoareTripleChecker+Valid, 3536 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.17ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2563.71ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:49,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3370 Valid, 3536 Invalid, 8 Unknown, 0 Unchecked, 13.17ms Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2563.71ms Time] [2021-11-13 01:36:49,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2021-11-13 01:36:49,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 2748. [2021-11-13 01:36:49,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2748 states, 1896 states have (on average 1.3138185654008439) internal successors, (2491), 1946 states have internal predecessors, (2491), 684 states have call successors, (684), 169 states have call predecessors, (684), 167 states have return successors, (677), 662 states have call predecessors, (677), 675 states have call successors, (677) [2021-11-13 01:36:49,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 3852 transitions. [2021-11-13 01:36:49,557 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 3852 transitions. Word has length 19 [2021-11-13 01:36:49,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:49,558 INFO L470 AbstractCegarLoop]: Abstraction has 2748 states and 3852 transitions. [2021-11-13 01:36:49,559 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) [2021-11-13 01:36:49,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 3852 transitions. [2021-11-13 01:36:49,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 01:36:49,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:49,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:36:49,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:36:49,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:36:49,779 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:36:49,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:49,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1721417218, now seen corresponding path program 1 times [2021-11-13 01:36:49,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:36:49,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919768373] [2021-11-13 01:36:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:49,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:36:49,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:36:49,798 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:36:49,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:37:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:06,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:37:06,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:06,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:06,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:37:06,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919768373] [2021-11-13 01:37:06,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919768373] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:06,563 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:06,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:37:06,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873478329] [2021-11-13 01:37:06,563 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:06,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:37:06,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:37:06,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:37:06,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:37:06,564 INFO L87 Difference]: Start difference. First operand 2748 states and 3852 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-13 01:37:08,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:37:09,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:09,256 INFO L93 Difference]: Finished difference Result 2767 states and 3870 transitions. [2021-11-13 01:37:09,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:37:09,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 20 [2021-11-13 01:37:09,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:09,278 INFO L225 Difference]: With dead ends: 2767 [2021-11-13 01:37:09,278 INFO L226 Difference]: Without dead ends: 2743 [2021-11-13 01:37:09,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:37:09,282 INFO L933 BasicCegarLoop]: 3450 mSDtfsCounter, 3366 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2411.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3366 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.02ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2529.91ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:09,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3366 Valid, 3528 Invalid, 7 Unknown, 0 Unchecked, 13.02ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2529.91ms Time] [2021-11-13 01:37:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2743 states. [2021-11-13 01:37:09,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2743 to 2741. [2021-11-13 01:37:09,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 1892 states have (on average 1.3128964059196617) internal successors, (2484), 1940 states have internal predecessors, (2484), 678 states have call successors, (678), 172 states have call predecessors, (678), 170 states have return successors, (673), 658 states have call predecessors, (673), 671 states have call successors, (673) [2021-11-13 01:37:09,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 3835 transitions. [2021-11-13 01:37:09,491 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 3835 transitions. Word has length 20 [2021-11-13 01:37:09,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:09,491 INFO L470 AbstractCegarLoop]: Abstraction has 2741 states and 3835 transitions. [2021-11-13 01:37:09,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-13 01:37:09,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 3835 transitions. [2021-11-13 01:37:09,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-13 01:37:09,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:09,501 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] [2021-11-13 01:37:09,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:09,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:37:09,723 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:37:09,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:09,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1767891636, now seen corresponding path program 1 times [2021-11-13 01:37:09,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:37:09,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239042796] [2021-11-13 01:37:09,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:09,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:37:09,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:37:09,737 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:37:09,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:37:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:26,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 2017 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:37:26,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:27,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:37:27,680 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:37:27,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239042796] [2021-11-13 01:37:27,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239042796] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:27,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:27,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 01:37:27,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897412914] [2021-11-13 01:37:27,681 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:27,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:37:27,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:37:27,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:37:27,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:37:27,682 INFO L87 Difference]: Start difference. First operand 2741 states and 3835 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 01:37:28,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:28,775 INFO L93 Difference]: Finished difference Result 5433 states and 7607 transitions. [2021-11-13 01:37:28,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:37:28,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2021-11-13 01:37:28,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:28,798 INFO L225 Difference]: With dead ends: 5433 [2021-11-13 01:37:28,798 INFO L226 Difference]: Without dead ends: 2730 [2021-11-13 01:37:28,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:37:28,813 INFO L933 BasicCegarLoop]: 3418 mSDtfsCounter, 10 mSDsluCounter, 13644 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 488.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 17062 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.25ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 516.46ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:28,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 17062 Invalid, 28 Unknown, 0 Unchecked, 36.25ms Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 516.46ms Time] [2021-11-13 01:37:28,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-11-13 01:37:29,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2730. [2021-11-13 01:37:29,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2730 states, 1885 states have (on average 1.3124668435013263) internal successors, (2474), 1932 states have internal predecessors, (2474), 676 states have call successors, (676), 170 states have call predecessors, (676), 168 states have return successors, (671), 656 states have call predecessors, (671), 669 states have call successors, (671) [2021-11-13 01:37:29,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 3821 transitions. [2021-11-13 01:37:29,045 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 3821 transitions. Word has length 53 [2021-11-13 01:37:29,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:29,047 INFO L470 AbstractCegarLoop]: Abstraction has 2730 states and 3821 transitions. [2021-11-13 01:37:29,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 01:37:29,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 3821 transitions. [2021-11-13 01:37:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-13 01:37:29,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:29,053 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:37:29,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:29,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:37:29,271 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:37:29,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:29,272 INFO L85 PathProgramCache]: Analyzing trace with hash 815157862, now seen corresponding path program 1 times [2021-11-13 01:37:29,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:37:29,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58084952] [2021-11-13 01:37:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:29,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:37:29,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:37:29,288 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:37:29,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:37:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:46,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 2148 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:37:46,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:37:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 01:37:46,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:37:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 01:37:47,170 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:37:47,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58084952] [2021-11-13 01:37:47,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58084952] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:47,170 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:47,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 01:37:47,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924848554] [2021-11-13 01:37:47,170 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:47,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:37:47,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:37:47,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:37:47,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:37:47,173 INFO L87 Difference]: Start difference. First operand 2730 states and 3821 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 01:37:47,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:47,921 INFO L93 Difference]: Finished difference Result 5421 states and 7592 transitions. [2021-11-13 01:37:47,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:37:47,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 81 [2021-11-13 01:37:47,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:47,943 INFO L225 Difference]: With dead ends: 5421 [2021-11-13 01:37:47,943 INFO L226 Difference]: Without dead ends: 2730 [2021-11-13 01:37:47,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:37:47,956 INFO L933 BasicCegarLoop]: 3405 mSDtfsCounter, 3 mSDsluCounter, 6800 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 498.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10205 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.73ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 519.66ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:47,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 10205 Invalid, 10 Unknown, 0 Unchecked, 20.73ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 519.66ms Time] [2021-11-13 01:37:47,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-11-13 01:37:48,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2730. [2021-11-13 01:37:48,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2730 states, 1885 states have (on average 1.3119363395225465) internal successors, (2473), 1932 states have internal predecessors, (2473), 676 states have call successors, (676), 170 states have call predecessors, (676), 168 states have return successors, (671), 656 states have call predecessors, (671), 669 states have call successors, (671) [2021-11-13 01:37:48,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 3820 transitions. [2021-11-13 01:37:48,165 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 3820 transitions. Word has length 81 [2021-11-13 01:37:48,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:48,167 INFO L470 AbstractCegarLoop]: Abstraction has 2730 states and 3820 transitions. [2021-11-13 01:37:48,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 01:37:48,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 3820 transitions. [2021-11-13 01:37:48,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 01:37:48,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:48,172 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:37:48,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:37:48,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:37:48,395 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:37:48,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:48,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1123746407, now seen corresponding path program 1 times [2021-11-13 01:37:48,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:37:48,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754424844] [2021-11-13 01:37:48,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:48,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:37:48,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:37:48,409 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:37:48,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:38:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:05,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 2115 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-13 01:38:05,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:38:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:38:07,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:38:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 01:38:11,661 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:38:11,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754424844] [2021-11-13 01:38:11,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754424844] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:38:11,662 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:38:11,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 20 [2021-11-13 01:38:11,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483901149] [2021-11-13 01:38:11,662 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:38:11,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 01:38:11,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:38:11,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 01:38:11,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:38:11,664 INFO L87 Difference]: Start difference. First operand 2730 states and 3820 transitions. Second operand has 20 states, 16 states have (on average 5.1875) internal successors, (83), 15 states have internal predecessors, (83), 6 states have call successors, (18), 2 states have call predecessors, (18), 8 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-13 01:38:16,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:38:18,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:38:35,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:38:35,977 INFO L93 Difference]: Finished difference Result 5769 states and 8139 transitions. [2021-11-13 01:38:35,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 01:38:35,978 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 5.1875) internal successors, (83), 15 states have internal predecessors, (83), 6 states have call successors, (18), 2 states have call predecessors, (18), 8 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 87 [2021-11-13 01:38:35,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:38:36,001 INFO L225 Difference]: With dead ends: 5769 [2021-11-13 01:38:36,002 INFO L226 Difference]: Without dead ends: 3073 [2021-11-13 01:38:36,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2021-11-13 01:38:36,015 INFO L933 BasicCegarLoop]: 3726 mSDtfsCounter, 309 mSDsluCounter, 47799 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21769.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 51525 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 91.90ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22798.42ms IncrementalHoareTripleChecker+Time [2021-11-13 01:38:36,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 51525 Invalid, 2036 Unknown, 0 Unchecked, 91.90ms Time], IncrementalHoareTripleChecker [12 Valid, 2022 Invalid, 2 Unknown, 0 Unchecked, 22798.42ms Time] [2021-11-13 01:38:36,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2021-11-13 01:38:36,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 2737. [2021-11-13 01:38:36,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2737 states, 1890 states have (on average 1.3111111111111111) internal successors, (2478), 1937 states have internal predecessors, (2478), 677 states have call successors, (677), 170 states have call predecessors, (677), 169 states have return successors, (678), 658 states have call predecessors, (678), 670 states have call successors, (678) [2021-11-13 01:38:36,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 3833 transitions. [2021-11-13 01:38:36,215 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 3833 transitions. Word has length 87 [2021-11-13 01:38:36,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:38:36,216 INFO L470 AbstractCegarLoop]: Abstraction has 2737 states and 3833 transitions. [2021-11-13 01:38:36,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 5.1875) internal successors, (83), 15 states have internal predecessors, (83), 6 states have call successors, (18), 2 states have call predecessors, (18), 8 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-13 01:38:36,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 3833 transitions. [2021-11-13 01:38:36,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 01:38:36,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:38:36,219 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:38:36,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:38:36,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:38:36,439 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:38:36,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:38:36,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1429527131, now seen corresponding path program 1 times [2021-11-13 01:38:36,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:38:36,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862360125] [2021-11-13 01:38:36,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:36,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:38:36,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:38:36,454 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:38:36,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 01:38:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:53,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-13 01:38:53,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:38:58,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:38:58,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:39:04,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 01:39:04,803 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:39:04,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862360125] [2021-11-13 01:39:04,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862360125] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:39:04,803 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:39:04,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20, 13] imperfect sequences [] total 31 [2021-11-13 01:39:04,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204583622] [2021-11-13 01:39:04,804 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:39:04,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-13 01:39:04,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:39:04,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-13 01:39:04,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2021-11-13 01:39:04,806 INFO L87 Difference]: Start difference. First operand 2737 states and 3833 transitions. Second operand has 31 states, 26 states have (on average 3.5) internal successors, (91), 24 states have internal predecessors, (91), 7 states have call successors, (18), 2 states have call predecessors, (18), 9 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-13 01:39:13,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:38,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:39:38,379 INFO L93 Difference]: Finished difference Result 5432 states and 7615 transitions. [2021-11-13 01:39:38,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-13 01:39:38,380 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 26 states have (on average 3.5) internal successors, (91), 24 states have internal predecessors, (91), 7 states have call successors, (18), 2 states have call predecessors, (18), 9 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) Word has length 87 [2021-11-13 01:39:38,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:39:38,400 INFO L225 Difference]: With dead ends: 5432 [2021-11-13 01:39:38,401 INFO L226 Difference]: Without dead ends: 2734 [2021-11-13 01:39:38,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2021-11-13 01:39:38,414 INFO L933 BasicCegarLoop]: 3278 mSDtfsCounter, 16 mSDsluCounter, 68654 mSDsCounter, 0 mSdLazyCounter, 2959 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27270.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 71932 SdHoareTripleChecker+Invalid, 3114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 101.50ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2959 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 28668.21ms IncrementalHoareTripleChecker+Time [2021-11-13 01:39:38,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 71932 Invalid, 3114 Unknown, 0 Unchecked, 101.50ms Time], IncrementalHoareTripleChecker [16 Valid, 2959 Invalid, 1 Unknown, 138 Unchecked, 28668.21ms Time] [2021-11-13 01:39:38,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-11-13 01:39:38,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 2725. [2021-11-13 01:39:38,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 1882 states have (on average 1.311902231668438) internal successors, (2469), 1929 states have internal predecessors, (2469), 675 states have call successors, (675), 169 states have call predecessors, (675), 167 states have return successors, (670), 655 states have call predecessors, (670), 668 states have call successors, (670) [2021-11-13 01:39:38,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 3814 transitions. [2021-11-13 01:39:38,596 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 3814 transitions. Word has length 87 [2021-11-13 01:39:38,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:39:38,597 INFO L470 AbstractCegarLoop]: Abstraction has 2725 states and 3814 transitions. [2021-11-13 01:39:38,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 26 states have (on average 3.5) internal successors, (91), 24 states have internal predecessors, (91), 7 states have call successors, (18), 2 states have call predecessors, (18), 9 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-13 01:39:38,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 3814 transitions. [2021-11-13 01:39:38,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-13 01:39:38,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:39:38,601 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:39:38,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:39:38,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:39:38,814 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:39:38,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:39:38,814 INFO L85 PathProgramCache]: Analyzing trace with hash 239581160, now seen corresponding path program 1 times [2021-11-13 01:39:38,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:39:38,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270733602] [2021-11-13 01:39:38,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:39:38,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:39:38,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:39:38,823 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:39:38,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:39:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:39:55,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 2171 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:39:55,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:39:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 01:39:56,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:39:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 01:39:56,486 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:39:56,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270733602] [2021-11-13 01:39:56,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270733602] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:39:56,486 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:39:56,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:39:56,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217785378] [2021-11-13 01:39:56,487 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:39:56,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:39:56,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:39:56,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:39:56,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:39:56,488 INFO L87 Difference]: Start difference. First operand 2725 states and 3814 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 01:39:58,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:39:59,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:39:59,172 INFO L93 Difference]: Finished difference Result 3012 states and 4136 transitions. [2021-11-13 01:39:59,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:39:59,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2021-11-13 01:39:59,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:39:59,208 INFO L225 Difference]: With dead ends: 3012 [2021-11-13 01:39:59,208 INFO L226 Difference]: Without dead ends: 2518 [2021-11-13 01:39:59,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:39:59,213 INFO L933 BasicCegarLoop]: 3428 mSDtfsCounter, 1710 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2449.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 5149 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.07ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2548.41ms IncrementalHoareTripleChecker+Time [2021-11-13 01:39:59,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1710 Valid, 5149 Invalid, 7 Unknown, 0 Unchecked, 10.07ms Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2548.41ms Time] [2021-11-13 01:39:59,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-11-13 01:39:59,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2516. [2021-11-13 01:39:59,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2516 states, 1737 states have (on average 1.3005181347150259) internal successors, (2259), 1776 states have internal predecessors, (2259), 616 states have call successors, (616), 164 states have call predecessors, (616), 162 states have return successors, (609), 597 states have call predecessors, (609), 609 states have call successors, (609) [2021-11-13 01:39:59,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3484 transitions. [2021-11-13 01:39:59,379 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3484 transitions. Word has length 88 [2021-11-13 01:39:59,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:39:59,379 INFO L470 AbstractCegarLoop]: Abstraction has 2516 states and 3484 transitions. [2021-11-13 01:39:59,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 01:39:59,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3484 transitions. [2021-11-13 01:39:59,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-13 01:39:59,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:39:59,386 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:39:59,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 01:39:59,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:39:59,602 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:39:59,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:39:59,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1012007465, now seen corresponding path program 1 times [2021-11-13 01:39:59,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:39:59,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755953035] [2021-11-13 01:39:59,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:39:59,611 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:39:59,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:39:59,613 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:39:59,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 01:40:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:40:17,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 2236 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:40:17,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:40:17,679 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 01:40:17,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:40:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 01:40:17,991 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:40:17,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755953035] [2021-11-13 01:40:17,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755953035] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:40:17,992 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:40:17,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:40:17,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864068484] [2021-11-13 01:40:17,993 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:40:17,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:40:17,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:40:17,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:40:17,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:40:17,994 INFO L87 Difference]: Start difference. First operand 2516 states and 3484 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 01:40:18,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:40:18,142 INFO L93 Difference]: Finished difference Result 5021 states and 6977 transitions. [2021-11-13 01:40:18,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:40:18,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2021-11-13 01:40:18,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:40:18,154 INFO L225 Difference]: With dead ends: 5021 [2021-11-13 01:40:18,154 INFO L226 Difference]: Without dead ends: 2518 [2021-11-13 01:40:18,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:40:18,165 INFO L933 BasicCegarLoop]: 3155 mSDtfsCounter, 0 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6303 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.37ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.48ms IncrementalHoareTripleChecker+Time [2021-11-13 01:40:18,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6303 Invalid, 14 Unknown, 0 Unchecked, 5.37ms Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 46.48ms Time] [2021-11-13 01:40:18,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-11-13 01:40:18,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2516. [2021-11-13 01:40:18,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2516 states, 1737 states have (on average 1.2970639032815199) internal successors, (2253), 1776 states have internal predecessors, (2253), 616 states have call successors, (616), 164 states have call predecessors, (616), 162 states have return successors, (609), 597 states have call predecessors, (609), 609 states have call successors, (609) [2021-11-13 01:40:18,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3478 transitions. [2021-11-13 01:40:18,332 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3478 transitions. Word has length 106 [2021-11-13 01:40:18,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:40:18,334 INFO L470 AbstractCegarLoop]: Abstraction has 2516 states and 3478 transitions. [2021-11-13 01:40:18,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 01:40:18,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3478 transitions. [2021-11-13 01:40:18,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-13 01:40:18,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:40:18,340 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:40:18,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 01:40:18,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:40:18,553 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:40:18,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:40:18,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1437319688, now seen corresponding path program 1 times [2021-11-13 01:40:18,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:40:18,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755308523] [2021-11-13 01:40:18,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:18,567 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:40:18,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:40:18,568 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:40:18,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab0221e5-90ca-41e6-bedb-f2033eb74ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process