./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:37:15,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:37:15,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:37:15,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:37:15,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:37:15,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:37:15,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:37:15,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:37:15,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:37:15,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:37:15,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:37:15,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:37:15,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:37:15,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:37:15,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:37:15,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:37:15,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:37:15,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:37:15,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:37:15,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:37:15,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:37:15,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:37:15,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:37:15,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:37:15,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:37:15,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:37:15,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:37:15,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:37:15,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:37:15,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:37:15,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:37:15,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:37:15,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:37:15,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:37:15,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:37:15,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:37:15,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:37:15,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:37:15,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:37:15,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:37:15,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:37:15,474 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 01:37:15,513 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:37:15,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:37:15,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:37:15,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:37:15,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:37:15,521 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:37:15,521 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:37:15,521 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:37:15,522 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:37:15,522 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:37:15,522 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:37:15,522 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:37:15,522 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:37:15,523 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:37:15,523 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:37:15,523 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:37:15,523 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:37:15,523 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:37:15,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:37:15,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:37:15,525 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:37:15,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:37:15,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:37:15,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:37:15,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:37:15,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:37:15,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:37:15,526 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 01:37:15,526 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:37:15,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:37:15,526 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:37:15,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:37:15,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:37:15,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:37:15,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:37:15,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:37:15,528 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:37:15,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:37:15,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:37:15,528 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:37:15,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:37:15,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:37:15,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:37:15,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 [2022-11-22 01:37:15,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:37:15,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:37:15,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:37:15,858 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:37:15,859 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:37:15,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2022-11-22 01:37:18,896 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:37:19,226 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:37:19,226 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2022-11-22 01:37:19,240 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/data/ab8b83573/d72dcab19ea647959ee6166a2d11077d/FLAGbbbb8221f [2022-11-22 01:37:19,261 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/data/ab8b83573/d72dcab19ea647959ee6166a2d11077d [2022-11-22 01:37:19,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:37:19,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:37:19,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:37:19,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:37:19,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:37:19,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:37:19" (1/1) ... [2022-11-22 01:37:19,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20fa7103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:19, skipping insertion in model container [2022-11-22 01:37:19,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:37:19" (1/1) ... [2022-11-22 01:37:19,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:37:19,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:37:19,646 WARN L237 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_fe966d31-0452-479e-b3e3-43e15dff097d/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30451,30464] [2022-11-22 01:37:19,651 WARN L237 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_fe966d31-0452-479e-b3e3-43e15dff097d/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30681,30694] [2022-11-22 01:37:19,656 WARN L237 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_fe966d31-0452-479e-b3e3-43e15dff097d/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30979,30992] [2022-11-22 01:37:19,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:37:19,676 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:37:19,714 WARN L237 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_fe966d31-0452-479e-b3e3-43e15dff097d/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30451,30464] [2022-11-22 01:37:19,716 WARN L237 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_fe966d31-0452-479e-b3e3-43e15dff097d/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30681,30694] [2022-11-22 01:37:19,718 WARN L237 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_fe966d31-0452-479e-b3e3-43e15dff097d/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30979,30992] [2022-11-22 01:37:19,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:37:19,758 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:37:19,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:19 WrapperNode [2022-11-22 01:37:19,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:37:19,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:37:19,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:37:19,760 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:37:19,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:19" (1/1) ... [2022-11-22 01:37:19,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:19" (1/1) ... [2022-11-22 01:37:19,809 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2022-11-22 01:37:19,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:37:19,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:37:19,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:37:19,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:37:19,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:19" (1/1) ... [2022-11-22 01:37:19,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:19" (1/1) ... [2022-11-22 01:37:19,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:19" (1/1) ... [2022-11-22 01:37:19,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:19" (1/1) ... [2022-11-22 01:37:19,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:19" (1/1) ... [2022-11-22 01:37:19,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:19" (1/1) ... [2022-11-22 01:37:19,854 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:19" (1/1) ... [2022-11-22 01:37:19,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:19" (1/1) ... [2022-11-22 01:37:19,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:37:19,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:37:19,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:37:19,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:37:19,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:19" (1/1) ... [2022-11-22 01:37:19,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:37:19,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:19,913 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:37:19,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:37:19,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:37:19,966 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-22 01:37:19,966 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-22 01:37:19,966 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-22 01:37:19,966 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-22 01:37:19,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:37:19,967 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-22 01:37:19,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:37:19,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:37:19,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:37:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:37:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:37:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:37:19,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:37:19,970 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 01:37:20,219 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:37:20,221 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:37:20,689 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:37:20,697 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:37:20,698 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 01:37:20,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:20 BoogieIcfgContainer [2022-11-22 01:37:20,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:37:20,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:37:20,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:37:20,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:37:20,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:37:19" (1/3) ... [2022-11-22 01:37:20,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd35b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:37:20, skipping insertion in model container [2022-11-22 01:37:20,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:19" (2/3) ... [2022-11-22 01:37:20,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd35b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:37:20, skipping insertion in model container [2022-11-22 01:37:20,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:20" (3/3) ... [2022-11-22 01:37:20,718 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2022-11-22 01:37:20,727 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 01:37:20,739 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:37:20,739 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-22 01:37:20,740 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 01:37:20,881 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-22 01:37:20,927 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:37:20,959 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 163 transitions, 342 flow [2022-11-22 01:37:20,962 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 163 transitions, 342 flow [2022-11-22 01:37:20,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 163 transitions, 342 flow [2022-11-22 01:37:21,046 INFO L130 PetriNetUnfolder]: 11/161 cut-off events. [2022-11-22 01:37:21,047 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-22 01:37:21,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 161 events. 11/161 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 311 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2022-11-22 01:37:21,059 INFO L119 LiptonReduction]: Number of co-enabled transitions 5404 [2022-11-22 01:37:41,667 INFO L134 LiptonReduction]: Checked pairs total: 10309 [2022-11-22 01:37:41,667 INFO L136 LiptonReduction]: Total number of compositions: 153 [2022-11-22 01:37:41,676 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 41 transitions, 98 flow [2022-11-22 01:37:41,726 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 334 states, 326 states have (on average 2.960122699386503) internal successors, (965), 333 states have internal predecessors, (965), 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) [2022-11-22 01:37:41,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:37:41,752 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1aa25393, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:37:41,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-22 01:37:41,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 326 states have (on average 2.960122699386503) internal successors, (965), 333 states have internal predecessors, (965), 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) [2022-11-22 01:37:41,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:37:41,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:41,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:37:41,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-22 01:37:41,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:41,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1991767609, now seen corresponding path program 1 times [2022-11-22 01:37:41,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:41,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520065870] [2022-11-22 01:37:41,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:41,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:42,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:37:42,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:42,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520065870] [2022-11-22 01:37:42,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520065870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:37:42,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:37:42,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:37:42,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149767833] [2022-11-22 01:37:42,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:42,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:37:42,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:42,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:37:42,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:37:42,194 INFO L87 Difference]: Start difference. First operand has 334 states, 326 states have (on average 2.960122699386503) internal successors, (965), 333 states have internal predecessors, (965), 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, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-22 01:37:42,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:42,383 INFO L93 Difference]: Finished difference Result 542 states and 1509 transitions. [2022-11-22 01:37:42,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:37:42,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-22 01:37:42,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:42,412 INFO L225 Difference]: With dead ends: 542 [2022-11-22 01:37:42,412 INFO L226 Difference]: Without dead ends: 542 [2022-11-22 01:37:42,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:37:42,419 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 24 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:42,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 15 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:37:42,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-11-22 01:37:42,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2022-11-22 01:37:42,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 534 states have (on average 2.8258426966292136) internal successors, (1509), 541 states have internal predecessors, (1509), 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) [2022-11-22 01:37:42,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1509 transitions. [2022-11-22 01:37:42,533 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1509 transitions. Word has length 6 [2022-11-22 01:37:42,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:42,533 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 1509 transitions. [2022-11-22 01:37:42,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-22 01:37:42,534 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1509 transitions. [2022-11-22 01:37:42,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:37:42,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:42,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:42,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:37:42,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-22 01:37:42,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:42,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1213634913, now seen corresponding path program 1 times [2022-11-22 01:37:42,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:42,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507829950] [2022-11-22 01:37:42,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:42,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:37:42,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:42,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507829950] [2022-11-22 01:37:42,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507829950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:37:42,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:37:42,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:37:42,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853176810] [2022-11-22 01:37:42,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:42,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:37:42,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:42,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:37:42,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:37:42,762 INFO L87 Difference]: Start difference. First operand 542 states and 1509 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-22 01:37:42,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:42,895 INFO L93 Difference]: Finished difference Result 878 states and 2489 transitions. [2022-11-22 01:37:42,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:37:42,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-11-22 01:37:42,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:42,905 INFO L225 Difference]: With dead ends: 878 [2022-11-22 01:37:42,905 INFO L226 Difference]: Without dead ends: 878 [2022-11-22 01:37:42,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:37:42,907 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 24 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:42,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 15 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:37:42,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-11-22 01:37:42,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-11-22 01:37:42,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 870 states have (on average 2.8609195402298853) internal successors, (2489), 877 states have internal predecessors, (2489), 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) [2022-11-22 01:37:42,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2489 transitions. [2022-11-22 01:37:42,977 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2489 transitions. Word has length 8 [2022-11-22 01:37:42,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:42,978 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 2489 transitions. [2022-11-22 01:37:42,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-22 01:37:42,978 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2489 transitions. [2022-11-22 01:37:42,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:37:42,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:42,982 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-22 01:37:42,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:37:42,982 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-22 01:37:42,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:42,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1777905830, now seen corresponding path program 1 times [2022-11-22 01:37:42,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:42,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573887690] [2022-11-22 01:37:42,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:42,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:43,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:37:43,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:43,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573887690] [2022-11-22 01:37:43,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573887690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:37:43,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:37:43,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:37:43,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503540506] [2022-11-22 01:37:43,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:43,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:37:43,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:43,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:37:43,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:37:43,107 INFO L87 Difference]: Start difference. First operand 878 states and 2489 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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) [2022-11-22 01:37:43,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:43,207 INFO L93 Difference]: Finished difference Result 836 states and 2377 transitions. [2022-11-22 01:37:43,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:37:43,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) 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 [2022-11-22 01:37:43,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:43,218 INFO L225 Difference]: With dead ends: 836 [2022-11-22 01:37:43,218 INFO L226 Difference]: Without dead ends: 836 [2022-11-22 01:37:43,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:37:43,220 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:43,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 12 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:37:43,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-11-22 01:37:43,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 836. [2022-11-22 01:37:43,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 831 states have (on average 2.8604091456077017) internal successors, (2377), 835 states have internal predecessors, (2377), 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) [2022-11-22 01:37:43,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 2377 transitions. [2022-11-22 01:37:43,248 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 2377 transitions. Word has length 9 [2022-11-22 01:37:43,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:43,248 INFO L495 AbstractCegarLoop]: Abstraction has 836 states and 2377 transitions. [2022-11-22 01:37:43,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) 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) [2022-11-22 01:37:43,249 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 2377 transitions. [2022-11-22 01:37:43,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:37:43,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:43,250 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-22 01:37:43,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:37:43,251 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-22 01:37:43,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:43,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1777905787, now seen corresponding path program 1 times [2022-11-22 01:37:43,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:43,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325545422] [2022-11-22 01:37:43,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:43,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:43,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:37:43,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:43,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325545422] [2022-11-22 01:37:43,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325545422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:37:43,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:37:43,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:37:43,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686343016] [2022-11-22 01:37:43,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:43,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:37:43,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:43,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:37:43,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:37:43,303 INFO L87 Difference]: Start difference. First operand 836 states and 2377 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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) [2022-11-22 01:37:43,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:43,403 INFO L93 Difference]: Finished difference Result 794 states and 2265 transitions. [2022-11-22 01:37:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:37:43,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) 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 [2022-11-22 01:37:43,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:43,408 INFO L225 Difference]: With dead ends: 794 [2022-11-22 01:37:43,409 INFO L226 Difference]: Without dead ends: 760 [2022-11-22 01:37:43,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:37:43,410 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 24 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:43,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 12 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:37:43,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-22 01:37:43,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 480. [2022-11-22 01:37:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 478 states have (on average 2.8933054393305437) internal successors, (1383), 479 states have internal predecessors, (1383), 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) [2022-11-22 01:37:43,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1383 transitions. [2022-11-22 01:37:43,429 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1383 transitions. Word has length 9 [2022-11-22 01:37:43,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:43,430 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 1383 transitions. [2022-11-22 01:37:43,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) 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) [2022-11-22 01:37:43,430 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1383 transitions. [2022-11-22 01:37:43,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:37:43,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:43,432 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:43,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:37:43,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-22 01:37:43,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:43,433 INFO L85 PathProgramCache]: Analyzing trace with hash -361844542, now seen corresponding path program 1 times [2022-11-22 01:37:43,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:43,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622027818] [2022-11-22 01:37:43,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:43,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:37:43,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:43,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622027818] [2022-11-22 01:37:43,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622027818] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:43,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846833930] [2022-11-22 01:37:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:43,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:43,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:43,510 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:37:43,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:37:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:43,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:37:43,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:37:43,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:37:43,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:37:43,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846833930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:37:43,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:37:43,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-22 01:37:43,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028765932] [2022-11-22 01:37:43,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:43,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:37:43,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:43,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:37:43,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:37:43,683 INFO L87 Difference]: Start difference. First operand 480 states and 1383 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) [2022-11-22 01:37:43,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:43,799 INFO L93 Difference]: Finished difference Result 456 states and 1318 transitions. [2022-11-22 01:37:43,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:37:43,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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 [2022-11-22 01:37:43,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:43,802 INFO L225 Difference]: With dead ends: 456 [2022-11-22 01:37:43,802 INFO L226 Difference]: Without dead ends: 456 [2022-11-22 01:37:43,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:37:43,803 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 46 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:43,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 24 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:37:43,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-11-22 01:37:43,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2022-11-22 01:37:43,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 2.8967032967032966) internal successors, (1318), 455 states have internal predecessors, (1318), 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) [2022-11-22 01:37:43,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1318 transitions. [2022-11-22 01:37:43,819 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1318 transitions. Word has length 11 [2022-11-22 01:37:43,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:43,819 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 1318 transitions. [2022-11-22 01:37:43,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) [2022-11-22 01:37:43,819 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1318 transitions. [2022-11-22 01:37:43,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:37:43,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:43,821 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:43,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:37:44,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:44,027 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-22 01:37:44,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:44,027 INFO L85 PathProgramCache]: Analyzing trace with hash -361844630, now seen corresponding path program 1 times [2022-11-22 01:37:44,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:44,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347024477] [2022-11-22 01:37:44,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:44,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:37:44,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:44,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347024477] [2022-11-22 01:37:44,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347024477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:37:44,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:37:44,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:37:44,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173054486] [2022-11-22 01:37:44,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:44,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:37:44,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:44,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:37:44,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:37:44,097 INFO L87 Difference]: Start difference. First operand 456 states and 1318 transitions. Second operand has 3 states, 2 states have (on average 5.5) 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) [2022-11-22 01:37:44,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:44,193 INFO L93 Difference]: Finished difference Result 432 states and 1253 transitions. [2022-11-22 01:37:44,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:37:44,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) 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 [2022-11-22 01:37:44,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:44,194 INFO L225 Difference]: With dead ends: 432 [2022-11-22 01:37:44,194 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 01:37:44,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:37:44,197 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:44,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 12 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:37:44,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 01:37:44,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 01:37:44,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-22 01:37:44,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 01:37:44,200 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-11-22 01:37:44,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:44,201 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 01:37:44,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) 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) [2022-11-22 01:37:44,201 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 01:37:44,201 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 01:37:44,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-22 01:37:44,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 10 remaining) [2022-11-22 01:37:44,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-22 01:37:44,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-22 01:37:44,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-22 01:37:44,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-22 01:37:44,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-22 01:37:44,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-22 01:37:44,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-22 01:37:44,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2022-11-22 01:37:44,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:37:44,209 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-22 01:37:44,214 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-22 01:37:44,214 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:37:44,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:37:44 BasicIcfg [2022-11-22 01:37:44,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:37:44,217 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:37:44,217 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:37:44,217 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:37:44,218 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:20" (3/4) ... [2022-11-22 01:37:44,220 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 01:37:44,227 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-11-22 01:37:44,227 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-11-22 01:37:44,232 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-22 01:37:44,232 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-22 01:37:44,233 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 01:37:44,233 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 01:37:44,274 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 01:37:44,277 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:37:44,278 INFO L158 Benchmark]: Toolchain (without parser) took 25009.40ms. Allocated memory was 159.4MB in the beginning and 207.6MB in the end (delta: 48.2MB). Free memory was 127.8MB in the beginning and 166.3MB in the end (delta: -38.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-22 01:37:44,278 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 107.0MB. Free memory was 54.7MB in the beginning and 54.6MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:37:44,279 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.03ms. Allocated memory is still 159.4MB. Free memory was 127.8MB in the beginning and 106.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-22 01:37:44,279 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.04ms. Allocated memory is still 159.4MB. Free memory was 106.9MB in the beginning and 104.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:37:44,279 INFO L158 Benchmark]: Boogie Preprocessor took 57.92ms. Allocated memory is still 159.4MB. Free memory was 104.8MB in the beginning and 102.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:37:44,279 INFO L158 Benchmark]: RCFGBuilder took 831.52ms. Allocated memory is still 159.4MB. Free memory was 102.7MB in the beginning and 84.5MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-22 01:37:44,280 INFO L158 Benchmark]: TraceAbstraction took 23508.82ms. Allocated memory was 159.4MB in the beginning and 207.6MB in the end (delta: 48.2MB). Free memory was 83.8MB in the beginning and 168.4MB in the end (delta: -84.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:37:44,280 INFO L158 Benchmark]: Witness Printer took 60.41ms. Allocated memory is still 207.6MB. Free memory was 168.4MB in the beginning and 166.3MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 01:37:44,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 107.0MB. Free memory was 54.7MB in the beginning and 54.6MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 488.03ms. Allocated memory is still 159.4MB. Free memory was 127.8MB in the beginning and 106.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.04ms. Allocated memory is still 159.4MB. Free memory was 106.9MB in the beginning and 104.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.92ms. Allocated memory is still 159.4MB. Free memory was 104.8MB in the beginning and 102.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 831.52ms. Allocated memory is still 159.4MB. Free memory was 102.7MB in the beginning and 84.5MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 23508.82ms. Allocated memory was 159.4MB in the beginning and 207.6MB in the end (delta: 48.2MB). Free memory was 83.8MB in the beginning and 168.4MB in the end (delta: -84.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 60.41ms. Allocated memory is still 207.6MB. Free memory was 168.4MB in the beginning and 166.3MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20.7s, 159 PlacesBefore, 40 PlacesAfterwards, 163 TransitionsBefore, 41 TransitionsAfterwards, 5404 CoEnabledTransitionPairs, 7 FixpointIterations, 55 TrivialSequentialCompositions, 77 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 3 ChoiceCompositions, 153 TotalNumberOfCompositions, 10309 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6762, independent: 6539, independent conditional: 0, independent unconditional: 6539, dependent: 203, dependent conditional: 0, dependent unconditional: 203, unknown: 20, unknown conditional: 0, unknown unconditional: 20] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3894, independent: 3839, independent conditional: 0, independent unconditional: 3839, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3894, independent: 3790, independent conditional: 0, independent unconditional: 3790, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 104, independent: 49, independent conditional: 0, independent unconditional: 49, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , SemanticIndependenceRelation.Query Time [ms]: [ total: 12975, independent: 63, independent conditional: 0, independent unconditional: 63, dependent: 278, dependent conditional: 0, dependent unconditional: 278, unknown: 12634, unknown conditional: 0, unknown unconditional: 12634] ], Cache Queries: [ total: 6762, independent: 2700, independent conditional: 0, independent unconditional: 2700, dependent: 154, dependent conditional: 0, dependent unconditional: 154, unknown: 3908, unknown conditional: 0, unknown unconditional: 3908] , Statistics on independence cache: Total cache size (in pairs): 291, Positive cache size: 274, Positive conditional cache size: 0, Positive unconditional cache size: 274, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 1, Unknown conditional cache size: 0, Unknown unconditional cache size: 1 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 725]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 725]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 743]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 743]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 236 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 23.3s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 20.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 168 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 168 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 405 IncrementalHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 60 mSDtfsCounter, 405 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=878occurred in iteration=2, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 280 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 191 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 12/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-22 01:37:44,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe966d31-0452-479e-b3e3-43e15dff097d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE