./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 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/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_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8 --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-47ea020 [2021-11-07 01:16:50,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:16:50,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:16:50,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:16:50,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:16:50,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:16:50,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:16:50,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:16:50,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:16:50,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:16:50,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:16:50,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:16:50,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:16:50,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:16:50,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:16:50,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:16:50,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:16:50,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:16:50,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:16:50,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:16:50,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:16:50,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:16:50,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:16:50,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:16:50,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:16:50,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:16:50,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:16:50,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:16:50,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:16:50,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:16:50,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:16:50,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:16:50,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:16:50,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:16:50,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:16:50,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:16:50,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:16:50,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:16:50,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:16:50,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:16:50,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:16:50,966 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:16:50,991 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:16:50,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:16:50,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:16:50,993 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:16:50,993 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:16:50,993 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:16:50,993 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:16:50,993 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:16:50,994 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:16:50,994 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:16:50,994 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:16:50,994 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:16:50,994 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:16:50,995 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:16:50,995 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:16:50,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:16:50,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:16:50,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:16:50,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:16:50,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:16:50,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:16:50,997 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:16:50,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:16:50,997 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:16:50,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:16:50,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:16:50,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:16:50,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:16:50,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:16:50,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:16:50,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:16:50,998 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:16:50,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:16:50,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:16:50,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:16:50,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:16:50,999 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_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 [2021-11-07 01:16:51,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:16:51,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:16:51,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:16:51,357 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:16:51,357 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:16:51,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-07 01:16:51,429 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/data/009ad1cee/3eb803b58c0d41eebcac236969d6a62f/FLAG6221c3143 [2021-11-07 01:16:52,454 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:16:52,456 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-07 01:16:52,534 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/data/009ad1cee/3eb803b58c0d41eebcac236969d6a62f/FLAG6221c3143 [2021-11-07 01:16:52,781 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/data/009ad1cee/3eb803b58c0d41eebcac236969d6a62f [2021-11-07 01:16:52,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:16:52,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:16:52,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:16:52,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:16:52,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:16:52,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:52" (1/1) ... [2021-11-07 01:16:52,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5054be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:52, skipping insertion in model container [2021-11-07 01:16:52,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:52" (1/1) ... [2021-11-07 01:16:52,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:16:52,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:16:55,322 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:55,653 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:55,659 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:55,694 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:55,698 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:55,713 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:55,714 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:55,715 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:55,716 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:55,737 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:55,752 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:55,810 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:55,819 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:55,838 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:55,868 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,048 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,049 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,051 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,075 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,082 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,088 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,099 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,106 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,113 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,121 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,127 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,189 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,194 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,211 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,213 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,220 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,233 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,234 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,239 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,287 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,301 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,324 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,359 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,359 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,366 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,368 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,381 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,388 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,411 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,412 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,443 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,448 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,454 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,455 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,460 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,468 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,483 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,489 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,502 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,503 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,504 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,504 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,504 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,511 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,517 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,518 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,520 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,521 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,528 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:16:56,618 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_be26a4e8-8281-4ab7-bf73-d5048255a8c7/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-07 01:16:56,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:16:56,842 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) [2021-11-07 01:16:56,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ad0875a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56, skipping insertion in model container [2021-11-07 01:16:56,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:16:56,843 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:16:56,846 INFO L168 Benchmark]: Toolchain (without parser) took 4058.83 ms. Allocated memory was 127.9 MB in the beginning and 174.1 MB in the end (delta: 46.1 MB). Free memory was 95.5 MB in the beginning and 95.8 MB in the end (delta: -318.9 kB). Peak memory consumption was 69.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:16:56,847 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 127.9 MB. Free memory was 104.9 MB in the beginning and 104.8 MB in the end (delta: 70.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:16:56,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4056.48 ms. Allocated memory was 127.9 MB in the beginning and 174.1 MB in the end (delta: 46.1 MB). Free memory was 95.1 MB in the beginning and 95.8 MB in the end (delta: -683.5 kB). Peak memory consumption was 69.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:16:56,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 127.9 MB. Free memory was 104.9 MB in the beginning and 104.8 MB in the end (delta: 70.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 4056.48 ms. Allocated memory was 127.9 MB in the beginning and 174.1 MB in the end (delta: 46.1 MB). Free memory was 95.1 MB in the beginning and 95.8 MB in the end (delta: -683.5 kB). Peak memory consumption was 69.0 MB. Max. memory is 16.1 GB. * 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_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/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_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8 --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-47ea020 [2021-11-07 01:16:58,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:16:58,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:16:59,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:16:59,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:16:59,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:16:59,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:16:59,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:16:59,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:16:59,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:16:59,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:16:59,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:16:59,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:16:59,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:16:59,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:16:59,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:16:59,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:16:59,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:16:59,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:16:59,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:16:59,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:16:59,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:16:59,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:16:59,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:16:59,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:16:59,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:16:59,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:16:59,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:16:59,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:16:59,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:16:59,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:16:59,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:16:59,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:16:59,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:16:59,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:16:59,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:16:59,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:16:59,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:16:59,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:16:59,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:16:59,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:16:59,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:16:59,145 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:16:59,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:16:59,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:16:59,146 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:16:59,146 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:16:59,146 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:16:59,147 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:16:59,147 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:16:59,147 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:16:59,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:16:59,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:16:59,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:16:59,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:16:59,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:16:59,149 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:16:59,150 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:16:59,150 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:16:59,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:16:59,150 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:16:59,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:16:59,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:16:59,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:16:59,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:16:59,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:16:59,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:16:59,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:16:59,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:16:59,160 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:16:59,161 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:16:59,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:16:59,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:16:59,161 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:16:59,161 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_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 [2021-11-07 01:16:59,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:16:59,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:16:59,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:16:59,562 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:16:59,563 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:16:59,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-07 01:16:59,627 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/data/f3d35dbcf/a8cf77a11a4b4a70b5f0e6bf62e01292/FLAG91950a981 [2021-11-07 01:17:00,779 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:17:00,781 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-07 01:17:00,842 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/data/f3d35dbcf/a8cf77a11a4b4a70b5f0e6bf62e01292/FLAG91950a981 [2021-11-07 01:17:01,041 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/data/f3d35dbcf/a8cf77a11a4b4a70b5f0e6bf62e01292 [2021-11-07 01:17:01,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:17:01,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:17:01,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:17:01,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:17:01,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:17:01,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:17:01" (1/1) ... [2021-11-07 01:17:01,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42ca24b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:01, skipping insertion in model container [2021-11-07 01:17:01,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:17:01" (1/1) ... [2021-11-07 01:17:01,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:17:01,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:17:04,766 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_be26a4e8-8281-4ab7-bf73-d5048255a8c7/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-07 01:17:04,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:17:04,994 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:17:05,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:17:05,646 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_be26a4e8-8281-4ab7-bf73-d5048255a8c7/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-07 01:17:05,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:17:05,680 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:17:06,209 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_be26a4e8-8281-4ab7-bf73-d5048255a8c7/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-07 01:17:06,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:17:06,457 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:17:06,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:06 WrapperNode [2021-11-07 01:17:06,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:17:06,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:17:06,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:17:06,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:17:06,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:06" (1/1) ... [2021-11-07 01:17:06,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:06" (1/1) ... [2021-11-07 01:17:07,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:17:07,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:17:07,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:17:07,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:17:07,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:06" (1/1) ... [2021-11-07 01:17:07,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:06" (1/1) ... [2021-11-07 01:17:07,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:06" (1/1) ... [2021-11-07 01:17:07,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:06" (1/1) ... [2021-11-07 01:17:07,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:06" (1/1) ... [2021-11-07 01:17:07,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:06" (1/1) ... [2021-11-07 01:17:08,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:06" (1/1) ... [2021-11-07 01:17:08,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:17:08,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:17:08,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:17:08,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:17:08,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:06" (1/1) ... [2021-11-07 01:17:08,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:17:08,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:17:08,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:17:08,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:17:08,228 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-07 01:17:08,228 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-07 01:17:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:17:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:17:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:17:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:17:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:17:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-07 01:17:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:17:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:17:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 01:17:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:17:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:17:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:17:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:17:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:17:08,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:17:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:17:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:17:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:17:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:17:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:17:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:17:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:17:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:17:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:17:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:17:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:17:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:17:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:17:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:17:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:17:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:17:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:19:36,685 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7390-3: __copy_from_user_#t~ret220 := copy_user_generic_#res;__copy_from_user_~tmp___2~3 := __copy_from_user_#t~ret220;havoc __copy_from_user_#t~ret220;__copy_from_user_#res := __copy_from_user_~tmp___2~3[32:0]; [2021-11-07 01:19:36,686 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7390-1: __copy_from_user_#t~ret220 := copy_user_generic_#res;__copy_from_user_~tmp___2~3 := __copy_from_user_#t~ret220;havoc __copy_from_user_#t~ret220;__copy_from_user_#res := __copy_from_user_~tmp___2~3[32:0]; [2021-11-07 01:19:36,686 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1037: assume __copy_from_user_#t~switch217;__copy_from_user_#res := __copy_from_user_~ret~1; [2021-11-07 01:19:36,686 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1038: assume !__copy_from_user_#t~switch217;__copy_from_user_#t~switch217 := __copy_from_user_#t~switch217 || 2bv32 == __copy_from_user_~size; [2021-11-07 01:19:36,686 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7449-1: havoc __copy_from_user_#t~switch217; [2021-11-07 01:19:36,686 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7449: havoc __copy_from_user_#t~switch217; [2021-11-07 01:19:36,687 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455-1: assume __copy_from_user_#t~switch217;__copy_from_user_#res := __copy_from_user_~ret~1; [2021-11-07 01:19:36,687 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455-1: assume !__copy_from_user_#t~switch217;__copy_from_user_#t~switch217 := __copy_from_user_#t~switch217 || 4bv32 == __copy_from_user_~size; [2021-11-07 01:19:36,687 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume __copy_from_user_#t~switch217;__copy_from_user_#res := __copy_from_user_~ret~1; [2021-11-07 01:19:36,687 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume !__copy_from_user_#t~switch217;__copy_from_user_#t~switch217 := __copy_from_user_#t~switch217 || 4bv32 == __copy_from_user_~size; [2021-11-07 01:19:36,687 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460-1: assume __copy_from_user_#t~switch217;__copy_from_user_#res := __copy_from_user_~ret~1; [2021-11-07 01:19:36,688 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460-1: assume !__copy_from_user_#t~switch217;__copy_from_user_#t~switch217 := __copy_from_user_#t~switch217 || 8bv32 == __copy_from_user_~size; [2021-11-07 01:19:36,688 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume __copy_from_user_#t~switch217;__copy_from_user_#res := __copy_from_user_~ret~1; [2021-11-07 01:19:36,688 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume !__copy_from_user_#t~switch217;__copy_from_user_#t~switch217 := __copy_from_user_#t~switch217 || 8bv32 == __copy_from_user_~size; [2021-11-07 01:19:36,688 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465-1: assume __copy_from_user_#t~switch217;__copy_from_user_#res := __copy_from_user_~ret~1; [2021-11-07 01:19:36,688 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465-1: assume !__copy_from_user_#t~switch217;__copy_from_user_#t~switch217 := __copy_from_user_#t~switch217 || 10bv32 == __copy_from_user_~size; [2021-11-07 01:19:36,689 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume __copy_from_user_#t~switch217;__copy_from_user_#res := __copy_from_user_~ret~1; [2021-11-07 01:19:36,689 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume !__copy_from_user_#t~switch217;__copy_from_user_#t~switch217 := __copy_from_user_#t~switch217 || 10bv32 == __copy_from_user_~size; [2021-11-07 01:19:36,689 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume __copy_from_user_#t~switch217;ldv__builtin_expect_#in~exp, ldv__builtin_expect_#in~c := ~sign_extendFrom32To64((if 0bv32 != __copy_from_user_~ret~1 then 1bv32 else 0bv32)), 0bv64;havoc ldv__builtin_expect_#res;havoc ldv__builtin_expect_~exp, ldv__builtin_expect_~c;ldv__builtin_expect_~exp := ldv__builtin_expect_#in~exp;ldv__builtin_expect_~c := ldv__builtin_expect_#in~c;ldv__builtin_expect_#res := ldv__builtin_expect_~exp; [2021-11-07 01:19:36,689 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume !__copy_from_user_#t~switch217;__copy_from_user_#t~switch217 := __copy_from_user_#t~switch217 || 16bv32 == __copy_from_user_~size; [2021-11-07 01:19:36,690 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470-1: assume __copy_from_user_#t~switch217;ldv__builtin_expect_#in~exp, ldv__builtin_expect_#in~c := ~sign_extendFrom32To64((if 0bv32 != __copy_from_user_~ret~1 then 1bv32 else 0bv32)), 0bv64;havoc ldv__builtin_expect_#res;havoc ldv__builtin_expect_~exp, ldv__builtin_expect_~c;ldv__builtin_expect_~exp := ldv__builtin_expect_#in~exp;ldv__builtin_expect_~c := ldv__builtin_expect_#in~c;ldv__builtin_expect_#res := ldv__builtin_expect_~exp; [2021-11-07 01:19:36,690 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470-1: assume !__copy_from_user_#t~switch217;__copy_from_user_#t~switch217 := __copy_from_user_#t~switch217 || 16bv32 == __copy_from_user_~size; [2021-11-07 01:19:36,690 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475-1: assume 0bv64 != __copy_from_user_~tmp___0~9;__copy_from_user_#res := __copy_from_user_~ret~1; [2021-11-07 01:19:36,690 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475-1: assume !(0bv64 != __copy_from_user_~tmp___0~9);__copy_from_user_#res := __copy_from_user_~ret~1; [2021-11-07 01:19:36,690 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume 0bv64 != __copy_from_user_~tmp___0~9;__copy_from_user_#res := __copy_from_user_~ret~1; [2021-11-07 01:19:36,690 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume !(0bv64 != __copy_from_user_~tmp___0~9);__copy_from_user_#res := __copy_from_user_~ret~1; [2021-11-07 01:19:36,691 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483-1: assume __copy_from_user_#t~switch217;ldv__builtin_expect_#in~exp, ldv__builtin_expect_#in~c := ~sign_extendFrom32To64((if 0bv32 != __copy_from_user_~ret~1 then 1bv32 else 0bv32)), 0bv64;havoc ldv__builtin_expect_#res;havoc ldv__builtin_expect_~exp, ldv__builtin_expect_~c;ldv__builtin_expect_~exp := ldv__builtin_expect_#in~exp;ldv__builtin_expect_~c := ldv__builtin_expect_#in~c;ldv__builtin_expect_#res := ldv__builtin_expect_~exp; [2021-11-07 01:19:36,691 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483-1: assume !__copy_from_user_#t~switch217;__copy_from_user_#t~switch217 := true; [2021-11-07 01:19:36,691 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume __copy_from_user_#t~switch217;ldv__builtin_expect_#in~exp, ldv__builtin_expect_#in~c := ~sign_extendFrom32To64((if 0bv32 != __copy_from_user_~ret~1 then 1bv32 else 0bv32)), 0bv64;havoc ldv__builtin_expect_#res;havoc ldv__builtin_expect_~exp, ldv__builtin_expect_~c;ldv__builtin_expect_~exp := ldv__builtin_expect_#in~exp;ldv__builtin_expect_~c := ldv__builtin_expect_#in~c;ldv__builtin_expect_#res := ldv__builtin_expect_~exp; [2021-11-07 01:19:36,691 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume !__copy_from_user_#t~switch217;__copy_from_user_#t~switch217 := true; [2021-11-07 01:19:36,691 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488-1: assume 0bv64 != __copy_from_user_~tmp___1~4;__copy_from_user_#res := __copy_from_user_~ret~1; [2021-11-07 01:19:36,692 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488-1: assume !(0bv64 != __copy_from_user_~tmp___1~4);__copy_from_user_#res := __copy_from_user_~ret~1; [2021-11-07 01:19:36,692 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume 0bv64 != __copy_from_user_~tmp___1~4;__copy_from_user_#res := __copy_from_user_~ret~1; [2021-11-07 01:19:36,692 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume !(0bv64 != __copy_from_user_~tmp___1~4);__copy_from_user_#res := __copy_from_user_~ret~1; [2021-11-07 01:19:36,692 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496-1: assume __copy_from_user_#t~switch217;copy_user_generic_#in~to.base, copy_user_generic_#in~to.offset, copy_user_generic_#in~from.base, copy_user_generic_#in~from.offset, copy_user_generic_#in~len := __copy_from_user_~dst.base, __copy_from_user_~dst.offset, __copy_from_user_~src.base, __copy_from_user_~src.offset, __copy_from_user_~size;havoc copy_user_generic_#res;havoc copy_user_generic_~to.base, copy_user_generic_~to.offset, copy_user_generic_~from.base, copy_user_generic_~from.offset, copy_user_generic_~len, copy_user_generic_~ret~0;copy_user_generic_~to.base, copy_user_generic_~to.offset := copy_user_generic_#in~to.base, copy_user_generic_#in~to.offset;copy_user_generic_~from.base, copy_user_generic_~from.offset := copy_user_generic_#in~from.base, copy_user_generic_#in~from.offset;copy_user_generic_~len := copy_user_generic_#in~len;havoc copy_user_generic_~ret~0;copy_user_generic_#res := ~zero_extendFrom32To64(copy_user_generic_~ret~0); [2021-11-07 01:19:36,692 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496-1: assume !__copy_from_user_#t~switch217; [2021-11-07 01:19:36,693 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume __copy_from_user_#t~switch217;copy_user_generic_#in~to.base, copy_user_generic_#in~to.offset, copy_user_generic_#in~from.base, copy_user_generic_#in~from.offset, copy_user_generic_#in~len := __copy_from_user_~dst.base, __copy_from_user_~dst.offset, __copy_from_user_~src.base, __copy_from_user_~src.offset, __copy_from_user_~size;havoc copy_user_generic_#res;havoc copy_user_generic_~to.base, copy_user_generic_~to.offset, copy_user_generic_~from.base, copy_user_generic_~from.offset, copy_user_generic_~len, copy_user_generic_~ret~0;copy_user_generic_~to.base, copy_user_generic_~to.offset := copy_user_generic_#in~to.base, copy_user_generic_#in~to.offset;copy_user_generic_~from.base, copy_user_generic_~from.offset := copy_user_generic_#in~from.base, copy_user_generic_#in~from.offset;copy_user_generic_~len := copy_user_generic_#in~len;havoc copy_user_generic_~ret~0;copy_user_generic_#res := ~zero_extendFrom32To64(copy_user_generic_~ret~0); [2021-11-07 01:19:36,693 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume !__copy_from_user_#t~switch217; [2021-11-07 01:19:36,693 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##463: assume !__copy_from_user_#t~switch217;__copy_from_user_#t~switch217 := __copy_from_user_#t~switch217 || 2bv32 == __copy_from_user_~size; [2021-11-07 01:19:36,693 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##462: assume __copy_from_user_#t~switch217;__copy_from_user_#res := __copy_from_user_~ret~1; [2021-11-07 01:19:36,695 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L13675-32: __copy_from_user_#t~ret219 := ldv__builtin_expect_#res;__copy_from_user_~tmp___1~4 := __copy_from_user_#t~ret219;havoc __copy_from_user_#t~ret219; [2021-11-07 01:19:36,695 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L13675-31: __copy_from_user_#t~ret218 := ldv__builtin_expect_#res;__copy_from_user_~tmp___0~9 := __copy_from_user_#t~ret218;havoc __copy_from_user_#t~ret218; [2021-11-07 01:19:36,695 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L13675-86: __copy_from_user_#t~ret219 := ldv__builtin_expect_#res;__copy_from_user_~tmp___1~4 := __copy_from_user_#t~ret219;havoc __copy_from_user_#t~ret219; [2021-11-07 01:19:36,696 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L13675-85: __copy_from_user_#t~ret218 := ldv__builtin_expect_#res;__copy_from_user_~tmp___0~9 := __copy_from_user_#t~ret218;havoc __copy_from_user_#t~ret218; [2021-11-07 01:19:36,733 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:19:36,733 INFO L299 CfgBuilder]: Removed 4362 assume(true) statements. [2021-11-07 01:19:36,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:19:36 BoogieIcfgContainer [2021-11-07 01:19:36,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:19:36,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:19:36,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:19:36,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:19:36,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:17:01" (1/3) ... [2021-11-07 01:19:36,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b6a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:19:36, skipping insertion in model container [2021-11-07 01:19:36,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:06" (2/3) ... [2021-11-07 01:19:36,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b6a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:19:36, skipping insertion in model container [2021-11-07 01:19:36,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:19:36" (3/3) ... [2021-11-07 01:19:36,748 INFO L111 eAbstractionObserver]: Analyzing ICFG main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-07 01:19:36,754 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:19:36,754 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 101 error locations. [2021-11-07 01:19:36,819 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:19:36,826 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 [2021-11-07 01:19:36,826 INFO L340 AbstractCegarLoop]: Starting to check reachability of 101 error locations. [2021-11-07 01:19:36,904 INFO L276 IsEmpty]: Start isEmpty. Operand has 4571 states, 4469 states have (on average 1.423137167151488) internal successors, (6360), 4570 states have internal predecessors, (6360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:36,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:19:36,909 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:36,910 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:36,911 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr95ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 98 more)] === [2021-11-07 01:19:36,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:36,916 INFO L85 PathProgramCache]: Analyzing trace with hash -483909220, now seen corresponding path program 1 times [2021-11-07 01:19:36,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:19:36,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337865103] [2021-11-07 01:19:36,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:36,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:19:36,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:19:36,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:19:36,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:19:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:53,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:19:53,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:19:53,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:53,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:19:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:53,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:19:53,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337865103] [2021-11-07 01:19:53,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337865103] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:53,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:53,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:19:53,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209294500] [2021-11-07 01:19:53,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:19:53,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:19:53,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:19:53,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:19:53,817 INFO L87 Difference]: Start difference. First operand has 4571 states, 4469 states have (on average 1.423137167151488) internal successors, (6360), 4570 states have internal predecessors, (6360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:56,644 INFO L93 Difference]: Finished difference Result 9109 states and 12672 transitions. [2021-11-07 01:19:56,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:19:56,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 01:19:56,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:56,690 INFO L225 Difference]: With dead ends: 9109 [2021-11-07 01:19:56,691 INFO L226 Difference]: Without dead ends: 4535 [2021-11-07 01:19:56,704 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:19:56,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4535 states. [2021-11-07 01:19:56,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4535 to 4535. [2021-11-07 01:19:56,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4535 states, 4435 states have (on average 1.387598647125141) internal successors, (6154), 4534 states have internal predecessors, (6154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:56,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4535 states to 4535 states and 6154 transitions. [2021-11-07 01:19:56,961 INFO L78 Accepts]: Start accepts. Automaton has 4535 states and 6154 transitions. Word has length 9 [2021-11-07 01:19:56,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:56,962 INFO L470 AbstractCegarLoop]: Abstraction has 4535 states and 6154 transitions. [2021-11-07 01:19:56,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:56,963 INFO L276 IsEmpty]: Start isEmpty. Operand 4535 states and 6154 transitions. [2021-11-07 01:19:56,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 01:19:56,963 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:56,964 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:57,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:19:57,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:19:57,179 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr96ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 98 more)] === [2021-11-07 01:19:57,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:57,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2116270552, now seen corresponding path program 1 times [2021-11-07 01:19:57,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:19:57,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434677645] [2021-11-07 01:19:57,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:57,189 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:19:57,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:19:57,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:19:57,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:20:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:13,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:20:13,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:14,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:14,197 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:20:14,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434677645] [2021-11-07 01:20:14,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434677645] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:14,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:14,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:20:14,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065709702] [2021-11-07 01:20:14,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:20:14,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:20:14,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:20:14,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:20:14,201 INFO L87 Difference]: Start difference. First operand 4535 states and 6154 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:16,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:16,861 INFO L93 Difference]: Finished difference Result 4535 states and 6154 transitions. [2021-11-07 01:20:16,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:20:16,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-07 01:20:16,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:16,888 INFO L225 Difference]: With dead ends: 4535 [2021-11-07 01:20:16,889 INFO L226 Difference]: Without dead ends: 4533 [2021-11-07 01:20:16,891 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:20:16,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4533 states. [2021-11-07 01:20:17,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4533 to 4533. [2021-11-07 01:20:17,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4533 states, 4434 states have (on average 1.3874605322507894) internal successors, (6152), 4532 states have internal predecessors, (6152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:17,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4533 states to 4533 states and 6152 transitions. [2021-11-07 01:20:17,100 INFO L78 Accepts]: Start accepts. Automaton has 4533 states and 6152 transitions. Word has length 10 [2021-11-07 01:20:17,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:17,101 INFO L470 AbstractCegarLoop]: Abstraction has 4533 states and 6152 transitions. [2021-11-07 01:20:17,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:17,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4533 states and 6152 transitions. [2021-11-07 01:20:17,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 01:20:17,102 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:17,102 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:20:17,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:20:17,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:20:17,315 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr97ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 98 more)] === [2021-11-07 01:20:17,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:17,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1179864282, now seen corresponding path program 1 times [2021-11-07 01:20:17,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:20:17,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607657561] [2021-11-07 01:20:17,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:17,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:20:17,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:20:17,329 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:20:17,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:20:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:33,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:20:33,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:33,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:33,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:33,892 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:20:33,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607657561] [2021-11-07 01:20:33,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607657561] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:33,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:33,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:20:33,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341807770] [2021-11-07 01:20:33,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:20:33,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:20:33,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:20:33,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:20:33,894 INFO L87 Difference]: Start difference. First operand 4533 states and 6152 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:36,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:36,711 INFO L93 Difference]: Finished difference Result 4533 states and 6152 transitions. [2021-11-07 01:20:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:20:36,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-07 01:20:36,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:36,737 INFO L225 Difference]: With dead ends: 4533 [2021-11-07 01:20:36,737 INFO L226 Difference]: Without dead ends: 4531 [2021-11-07 01:20:36,739 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:20:36,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4531 states. [2021-11-07 01:20:36,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4531 to 4531. [2021-11-07 01:20:36,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4531 states, 4433 states have (on average 1.3873223550642906) internal successors, (6150), 4530 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:36,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4531 states to 4531 states and 6150 transitions. [2021-11-07 01:20:36,940 INFO L78 Accepts]: Start accepts. Automaton has 4531 states and 6150 transitions. Word has length 11 [2021-11-07 01:20:36,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:36,940 INFO L470 AbstractCegarLoop]: Abstraction has 4531 states and 6150 transitions. [2021-11-07 01:20:36,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:36,940 INFO L276 IsEmpty]: Start isEmpty. Operand 4531 states and 6150 transitions. [2021-11-07 01:20:36,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:20:36,944 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:36,945 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:20:36,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:20:37,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:20:37,167 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr98ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 98 more)] === [2021-11-07 01:20:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:37,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2078926322, now seen corresponding path program 1 times [2021-11-07 01:20:37,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:20:37,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013033474] [2021-11-07 01:20:37,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:37,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:20:37,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:20:37,179 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:20:37,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:20:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:52,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:20:52,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:53,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:53,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:53,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:53,238 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:20:53,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013033474] [2021-11-07 01:20:53,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013033474] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:53,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:53,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:20:53,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164992210] [2021-11-07 01:20:53,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:20:53,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:20:53,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:20:53,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:20:53,240 INFO L87 Difference]: Start difference. First operand 4531 states and 6150 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:56,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:56,959 INFO L93 Difference]: Finished difference Result 9248 states and 12550 transitions. [2021-11-07 01:20:56,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:20:56,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-07 01:20:56,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:56,986 INFO L225 Difference]: With dead ends: 9248 [2021-11-07 01:20:56,986 INFO L226 Difference]: Without dead ends: 4769 [2021-11-07 01:20:56,993 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:20:57,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4769 states. [2021-11-07 01:20:57,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4769 to 4757. [2021-11-07 01:20:57,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4757 states, 4672 states have (on average 1.3779965753424657) internal successors, (6438), 4756 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:57,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4757 states to 4757 states and 6438 transitions. [2021-11-07 01:20:57,217 INFO L78 Accepts]: Start accepts. Automaton has 4757 states and 6438 transitions. Word has length 12 [2021-11-07 01:20:57,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:57,218 INFO L470 AbstractCegarLoop]: Abstraction has 4757 states and 6438 transitions. [2021-11-07 01:20:57,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:57,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4757 states and 6438 transitions. [2021-11-07 01:20:57,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:20:57,221 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:57,221 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:20:57,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:20:57,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:20:57,442 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr99ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 98 more)] === [2021-11-07 01:20:57,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:57,442 INFO L85 PathProgramCache]: Analyzing trace with hash 22219952, now seen corresponding path program 1 times [2021-11-07 01:20:57,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:20:57,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185013960] [2021-11-07 01:20:57,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:57,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:20:57,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:20:57,449 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:20:57,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:21:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:13,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:21:13,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:13,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:13,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:13,430 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:13,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185013960] [2021-11-07 01:21:13,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185013960] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:13,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:13,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:21:13,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338880023] [2021-11-07 01:21:13,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:21:13,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:13,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:21:13,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:21:13,431 INFO L87 Difference]: Start difference. First operand 4757 states and 6438 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:16,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:16,248 INFO L93 Difference]: Finished difference Result 4757 states and 6438 transitions. [2021-11-07 01:21:16,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:21:16,249 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 01:21:16,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:16,276 INFO L225 Difference]: With dead ends: 4757 [2021-11-07 01:21:16,276 INFO L226 Difference]: Without dead ends: 4745 [2021-11-07 01:21:16,278 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:21:16,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4745 states. [2021-11-07 01:21:16,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4745 to 4745. [2021-11-07 01:21:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4745 states, 4666 states have (on average 1.3771967423917701) internal successors, (6426), 4744 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:16,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4745 states to 4745 states and 6426 transitions. [2021-11-07 01:21:16,493 INFO L78 Accepts]: Start accepts. Automaton has 4745 states and 6426 transitions. Word has length 13 [2021-11-07 01:21:16,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:16,493 INFO L470 AbstractCegarLoop]: Abstraction has 4745 states and 6426 transitions. [2021-11-07 01:21:16,494 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:16,494 INFO L276 IsEmpty]: Start isEmpty. Operand 4745 states and 6426 transitions. [2021-11-07 01:21:16,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 01:21:16,496 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:16,496 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:16,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:16,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:16,697 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr100ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 98 more)] === [2021-11-07 01:21:16,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:16,697 INFO L85 PathProgramCache]: Analyzing trace with hash 688831932, now seen corresponding path program 1 times [2021-11-07 01:21:16,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:16,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661068638] [2021-11-07 01:21:16,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:16,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:16,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:16,707 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:16,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:21:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:32,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1857 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:21:32,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:32,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:32,726 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:32,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661068638] [2021-11-07 01:21:32,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661068638] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:32,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:32,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:21:32,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014059307] [2021-11-07 01:21:32,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:21:32,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:32,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:21:32,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:21:32,728 INFO L87 Difference]: Start difference. First operand 4745 states and 6426 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:35,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:35,734 INFO L93 Difference]: Finished difference Result 4745 states and 6426 transitions. [2021-11-07 01:21:35,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:21:35,735 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-07 01:21:35,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:35,769 INFO L225 Difference]: With dead ends: 4745 [2021-11-07 01:21:35,769 INFO L226 Difference]: Without dead ends: 4712 [2021-11-07 01:21:35,771 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:21:35,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4712 states. [2021-11-07 01:21:35,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4712 to 4712. [2021-11-07 01:21:35,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4712 states, 4642 states have (on average 1.3763464024127532) internal successors, (6389), 4711 states have internal predecessors, (6389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4712 states to 4712 states and 6389 transitions. [2021-11-07 01:21:36,014 INFO L78 Accepts]: Start accepts. Automaton has 4712 states and 6389 transitions. Word has length 14 [2021-11-07 01:21:36,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:36,015 INFO L470 AbstractCegarLoop]: Abstraction has 4712 states and 6389 transitions. [2021-11-07 01:21:36,015 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 4712 states and 6389 transitions. [2021-11-07 01:21:36,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:21:36,022 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:36,022 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:36,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:36,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:36,223 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 98 more)] === [2021-11-07 01:21:36,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:36,224 INFO L85 PathProgramCache]: Analyzing trace with hash 518148573, now seen corresponding path program 1 times [2021-11-07 01:21:36,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:36,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112139998] [2021-11-07 01:21:36,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:36,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:36,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:36,231 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:36,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:21:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:52,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 1945 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:21:52,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:52,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:52,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:52,811 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:52,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112139998] [2021-11-07 01:21:52,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112139998] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:52,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:52,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:21:52,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527244803] [2021-11-07 01:21:52,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:21:52,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:52,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:21:52,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:21:52,813 INFO L87 Difference]: Start difference. First operand 4712 states and 6389 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:54,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:54,955 INFO L93 Difference]: Finished difference Result 9377 states and 12713 transitions. [2021-11-07 01:21:54,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:21:54,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 01:21:54,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:54,974 INFO L225 Difference]: With dead ends: 9377 [2021-11-07 01:21:54,974 INFO L226 Difference]: Without dead ends: 4707 [2021-11-07 01:21:54,983 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:21:54,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4707 states. [2021-11-07 01:21:55,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4707 to 4707. [2021-11-07 01:21:55,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4707 states, 4637 states have (on average 1.376105240457192) internal successors, (6381), 4706 states have internal predecessors, (6381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 6381 transitions. [2021-11-07 01:21:55,225 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 6381 transitions. Word has length 31 [2021-11-07 01:21:55,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:55,225 INFO L470 AbstractCegarLoop]: Abstraction has 4707 states and 6381 transitions. [2021-11-07 01:21:55,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:55,226 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 6381 transitions. [2021-11-07 01:21:55,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:21:55,227 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:55,228 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:55,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:55,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:55,428 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 98 more)] === [2021-11-07 01:21:55,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:55,429 INFO L85 PathProgramCache]: Analyzing trace with hash 493778895, now seen corresponding path program 1 times [2021-11-07 01:21:55,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:55,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753772989] [2021-11-07 01:21:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:55,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:55,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:55,436 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:55,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:22:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:11,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:22:11,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:12,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:12,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:13,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:13,287 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:13,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753772989] [2021-11-07 01:22:13,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753772989] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:13,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:13,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-07 01:22:13,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742298090] [2021-11-07 01:22:13,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:22:13,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:13,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:22:13,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:22:13,290 INFO L87 Difference]: Start difference. First operand 4707 states and 6381 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:36,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:36,038 INFO L93 Difference]: Finished difference Result 15923 states and 21560 transitions. [2021-11-07 01:22:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:22:36,039 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 01:22:36,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:36,065 INFO L225 Difference]: With dead ends: 15923 [2021-11-07 01:22:36,065 INFO L226 Difference]: Without dead ends: 11258 [2021-11-07 01:22:36,076 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:22:36,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11258 states. [2021-11-07 01:22:36,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11258 to 4712. [2021-11-07 01:22:36,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4712 states, 4642 states have (on average 1.3757001292546316) internal successors, (6386), 4711 states have internal predecessors, (6386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:36,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4712 states to 4712 states and 6386 transitions. [2021-11-07 01:22:36,386 INFO L78 Accepts]: Start accepts. Automaton has 4712 states and 6386 transitions. Word has length 45 [2021-11-07 01:22:36,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:36,386 INFO L470 AbstractCegarLoop]: Abstraction has 4712 states and 6386 transitions. [2021-11-07 01:22:36,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:36,387 INFO L276 IsEmpty]: Start isEmpty. Operand 4712 states and 6386 transitions. [2021-11-07 01:22:36,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 01:22:36,389 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:36,389 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:36,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:36,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:36,615 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 98 more)] === [2021-11-07 01:22:36,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:36,616 INFO L85 PathProgramCache]: Analyzing trace with hash -878098105, now seen corresponding path program 1 times [2021-11-07 01:22:36,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:36,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104512165] [2021-11-07 01:22:36,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:36,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:36,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:36,623 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:36,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:22:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:53,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 2073 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:22:53,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:53,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:53,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:53,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:53,823 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:53,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104512165] [2021-11-07 01:22:53,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104512165] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:53,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:53,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:22:53,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521124368] [2021-11-07 01:22:53,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:22:53,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:53,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:22:53,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:22:53,825 INFO L87 Difference]: Start difference. First operand 4712 states and 6386 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:55,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:55,469 INFO L93 Difference]: Finished difference Result 9376 states and 12709 transitions. [2021-11-07 01:22:55,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:22:55,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-07 01:22:55,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:55,480 INFO L225 Difference]: With dead ends: 9376 [2021-11-07 01:22:55,480 INFO L226 Difference]: Without dead ends: 4712 [2021-11-07 01:22:55,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:22:55,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4712 states. [2021-11-07 01:22:55,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4712 to 4712. [2021-11-07 01:22:55,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4712 states, 4642 states have (on average 1.3754847048685912) internal successors, (6385), 4711 states have internal predecessors, (6385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:55,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4712 states to 4712 states and 6385 transitions. [2021-11-07 01:22:55,772 INFO L78 Accepts]: Start accepts. Automaton has 4712 states and 6385 transitions. Word has length 46 [2021-11-07 01:22:55,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:55,773 INFO L470 AbstractCegarLoop]: Abstraction has 4712 states and 6385 transitions. [2021-11-07 01:22:55,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:55,773 INFO L276 IsEmpty]: Start isEmpty. Operand 4712 states and 6385 transitions. [2021-11-07 01:22:55,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 01:22:55,775 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:55,775 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:55,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:55,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:55,991 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 98 more)] === [2021-11-07 01:22:55,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:55,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1914134883, now seen corresponding path program 1 times [2021-11-07 01:22:55,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:55,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845305730] [2021-11-07 01:22:55,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:55,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:55,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:55,998 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:56,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:23:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:12,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 2035 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-07 01:23:12,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:15,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:15,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:17,608 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:17,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845305730] [2021-11-07 01:23:17,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845305730] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:17,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:23:17,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 8] imperfect sequences [] total 19 [2021-11-07 01:23:17,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065257955] [2021-11-07 01:23:17,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:23:17,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:17,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:23:17,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:23:17,610 INFO L87 Difference]: Start difference. First operand 4712 states and 6385 transitions. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:26,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:26,840 INFO L93 Difference]: Finished difference Result 20652 states and 28042 transitions. [2021-11-07 01:25:26,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-07 01:25:26,841 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 01:25:26,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:26,865 INFO L225 Difference]: With dead ends: 20652 [2021-11-07 01:25:26,866 INFO L226 Difference]: Without dead ends: 15987 [2021-11-07 01:25:26,877 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=328, Invalid=1078, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 01:25:26,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15987 states. [2021-11-07 01:25:27,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15987 to 4706. [2021-11-07 01:25:27,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4706 states, 4636 states have (on average 1.3757549611734254) internal successors, (6378), 4705 states have internal predecessors, (6378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:27,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4706 states to 4706 states and 6378 transitions. [2021-11-07 01:25:27,396 INFO L78 Accepts]: Start accepts. Automaton has 4706 states and 6378 transitions. Word has length 48 [2021-11-07 01:25:27,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:27,396 INFO L470 AbstractCegarLoop]: Abstraction has 4706 states and 6378 transitions. [2021-11-07 01:25:27,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:27,397 INFO L276 IsEmpty]: Start isEmpty. Operand 4706 states and 6378 transitions. [2021-11-07 01:25:27,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:25:27,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:27,399 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:27,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:27,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:27,623 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 98 more)] === [2021-11-07 01:25:27,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:27,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1968940555, now seen corresponding path program 1 times [2021-11-07 01:25:27,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:27,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541833360] [2021-11-07 01:25:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:27,630 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:27,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:27,631 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:27,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:25:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:44,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 2092 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:25:44,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:44,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:44,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:44,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:44,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:44,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541833360] [2021-11-07 01:25:44,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541833360] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:44,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:44,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:25:44,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558552845] [2021-11-07 01:25:44,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:25:44,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:44,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:25:44,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:25:44,955 INFO L87 Difference]: Start difference. First operand 4706 states and 6378 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:51,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:51,340 INFO L93 Difference]: Finished difference Result 10416 states and 14095 transitions. [2021-11-07 01:25:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:25:51,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:25:51,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:51,347 INFO L225 Difference]: With dead ends: 10416 [2021-11-07 01:25:51,347 INFO L226 Difference]: Without dead ends: 5751 [2021-11-07 01:25:51,355 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:25:51,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5751 states. [2021-11-07 01:25:51,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5751 to 4706. [2021-11-07 01:25:51,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4706 states, 4636 states have (on average 1.3755392579810182) internal successors, (6377), 4705 states have internal predecessors, (6377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:51,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4706 states to 4706 states and 6377 transitions. [2021-11-07 01:25:51,819 INFO L78 Accepts]: Start accepts. Automaton has 4706 states and 6377 transitions. Word has length 49 [2021-11-07 01:25:51,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:51,819 INFO L470 AbstractCegarLoop]: Abstraction has 4706 states and 6377 transitions. [2021-11-07 01:25:51,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:51,820 INFO L276 IsEmpty]: Start isEmpty. Operand 4706 states and 6377 transitions. [2021-11-07 01:25:51,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:25:51,821 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:51,821 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:51,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-07 01:25:52,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:52,022 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 98 more)] === [2021-11-07 01:25:52,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:52,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1946308301, now seen corresponding path program 1 times [2021-11-07 01:25:52,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:52,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368414053] [2021-11-07 01:25:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:52,028 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:52,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:52,031 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:52,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:26:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:08,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 2092 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:26:08,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:26:09,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:09,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:26:09,841 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:09,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368414053] [2021-11-07 01:26:09,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368414053] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:09,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:26:09,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:26:09,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255216597] [2021-11-07 01:26:09,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:26:09,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:09,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:26:09,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:26:09,842 INFO L87 Difference]: Start difference. First operand 4706 states and 6377 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:10,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:10,689 INFO L93 Difference]: Finished difference Result 15558 states and 20940 transitions. [2021-11-07 01:26:10,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:26:10,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:26:10,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:10,699 INFO L225 Difference]: With dead ends: 15558 [2021-11-07 01:26:10,699 INFO L226 Difference]: Without dead ends: 10898 [2021-11-07 01:26:10,704 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:26:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10898 states. [2021-11-07 01:26:11,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10898 to 8406. [2021-11-07 01:26:11,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8406 states, 8336 states have (on average 1.3670825335892514) internal successors, (11396), 8405 states have internal predecessors, (11396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:11,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8406 states to 8406 states and 11396 transitions. [2021-11-07 01:26:11,358 INFO L78 Accepts]: Start accepts. Automaton has 8406 states and 11396 transitions. Word has length 49 [2021-11-07 01:26:11,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:26:11,358 INFO L470 AbstractCegarLoop]: Abstraction has 8406 states and 11396 transitions. [2021-11-07 01:26:11,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:11,359 INFO L276 IsEmpty]: Start isEmpty. Operand 8406 states and 11396 transitions. [2021-11-07 01:26:11,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:26:11,360 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:11,360 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:26:11,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:11,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:26:11,575 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 98 more)] === [2021-11-07 01:26:11,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:11,576 INFO L85 PathProgramCache]: Analyzing trace with hash -459043804, now seen corresponding path program 1 times [2021-11-07 01:26:11,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:11,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856304175] [2021-11-07 01:26:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:11,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:11,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:11,584 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:11,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:26:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:28,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 2109 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:26:28,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:28,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:26:28,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:28,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:26:28,740 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:28,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856304175] [2021-11-07 01:26:28,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856304175] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:28,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:26:28,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:26:28,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789510789] [2021-11-07 01:26:28,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:26:28,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:28,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:26:28,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:26:28,741 INFO L87 Difference]: Start difference. First operand 8406 states and 11396 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:32,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:32,324 INFO L93 Difference]: Finished difference Result 8406 states and 11396 transitions. [2021-11-07 01:26:32,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:26:32,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:26:32,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:32,332 INFO L225 Difference]: With dead ends: 8406 [2021-11-07 01:26:32,332 INFO L226 Difference]: Without dead ends: 7238 [2021-11-07 01:26:32,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:26:32,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7238 states. [2021-11-07 01:26:32,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7238 to 7238. [2021-11-07 01:26:32,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7238 states, 7199 states have (on average 1.3579663842200305) internal successors, (9776), 7237 states have internal predecessors, (9776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:32,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7238 states to 7238 states and 9776 transitions. [2021-11-07 01:26:32,903 INFO L78 Accepts]: Start accepts. Automaton has 7238 states and 9776 transitions. Word has length 49 [2021-11-07 01:26:32,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:26:32,904 INFO L470 AbstractCegarLoop]: Abstraction has 7238 states and 9776 transitions. [2021-11-07 01:26:32,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:32,904 INFO L276 IsEmpty]: Start isEmpty. Operand 7238 states and 9776 transitions. [2021-11-07 01:26:32,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 01:26:32,906 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:32,907 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:26:32,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:33,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:26:33,111 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 98 more)] === [2021-11-07 01:26:33,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:33,112 INFO L85 PathProgramCache]: Analyzing trace with hash 363936570, now seen corresponding path program 1 times [2021-11-07 01:26:33,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:33,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676995605] [2021-11-07 01:26:33,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:33,118 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:33,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:33,119 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:33,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be26a4e8-8281-4ab7-bf73-d5048255a8c7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process