./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/peterson.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/peterson.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/bin/utaipan-aC7eJsxGYH --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 32bit --witnessprinter.graph.data.programhash ee3d1a41e169e13d6fb9bc974b1d8f7c8de5421cb2dfbc7e3d9a400662188398 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:37:30,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:37:30,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:37:30,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:37:30,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:37:30,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:37:30,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:37:30,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:37:30,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:37:30,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:37:30,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:37:30,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:37:30,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:37:30,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:37:30,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:37:30,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:37:30,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:37:30,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:37:30,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:37:30,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:37:30,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:37:30,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:37:30,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:37:30,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:37:30,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:37:30,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:37:30,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:37:30,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:37:30,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:37:30,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:37:30,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:37:30,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:37:30,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:37:30,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:37:30,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:37:30,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:37:30,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:37:30,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:37:30,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:37:30,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:37:30,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:37:30,883 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:37:30,934 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:37:30,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:37:30,935 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:37:30,936 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:37:30,936 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:37:30,936 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:37:30,936 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:37:30,936 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:37:30,942 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:37:30,942 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:37:30,944 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:37:30,944 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:37:30,944 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:37:30,944 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:37:30,944 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:37:30,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:37:30,945 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:37:30,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:37:30,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:37:30,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:37:30,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:37:30,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:37:30,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:37:30,947 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:37:30,947 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:37:30,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:37:30,947 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:37:30,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:37:30,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:37:30,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:37:30,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:37:30,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:37:30,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:37:30,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:37:30,951 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:37:30,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:37:30,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:37:30,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:37:30,951 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:37:30,951 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_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee3d1a41e169e13d6fb9bc974b1d8f7c8de5421cb2dfbc7e3d9a400662188398 [2021-11-03 05:37:31,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:37:31,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:37:31,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:37:31,273 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:37:31,274 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:37:31,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/pthread-atomic/peterson.i [2021-11-03 05:37:31,344 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/bin/utaipan-aC7eJsxGYH/data/187e70ddd/2b4513ba96654012b04d4da2d6110445/FLAG3fc3999c5 [2021-11-03 05:37:31,862 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:37:31,862 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/sv-benchmarks/c/pthread-atomic/peterson.i [2021-11-03 05:37:31,883 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/bin/utaipan-aC7eJsxGYH/data/187e70ddd/2b4513ba96654012b04d4da2d6110445/FLAG3fc3999c5 [2021-11-03 05:37:32,173 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/bin/utaipan-aC7eJsxGYH/data/187e70ddd/2b4513ba96654012b04d4da2d6110445 [2021-11-03 05:37:32,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:37:32,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:37:32,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:37:32,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:37:32,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:37:32,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:37:32" (1/1) ... [2021-11-03 05:37:32,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19227a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:32, skipping insertion in model container [2021-11-03 05:37:32,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:37:32" (1/1) ... [2021-11-03 05:37:32,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:37:32,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:37:32,433 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-03 05:37:32,605 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_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/sv-benchmarks/c/pthread-atomic/peterson.i[30997,31010] [2021-11-03 05:37:32,619 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_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/sv-benchmarks/c/pthread-atomic/peterson.i[31682,31695] [2021-11-03 05:37:32,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:37:32,639 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:37:32,653 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-03 05:37:32,684 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_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/sv-benchmarks/c/pthread-atomic/peterson.i[30997,31010] [2021-11-03 05:37:32,691 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_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/sv-benchmarks/c/pthread-atomic/peterson.i[31682,31695] [2021-11-03 05:37:32,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:37:32,744 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:37:32,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:32 WrapperNode [2021-11-03 05:37:32,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:37:32,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:37:32,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:37:32,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:37:32,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:32" (1/1) ... [2021-11-03 05:37:32,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:32" (1/1) ... [2021-11-03 05:37:32,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:37:32,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:37:32,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:37:32,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:37:32,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:32" (1/1) ... [2021-11-03 05:37:32,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:32" (1/1) ... [2021-11-03 05:37:32,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:32" (1/1) ... [2021-11-03 05:37:32,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:32" (1/1) ... [2021-11-03 05:37:32,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:32" (1/1) ... [2021-11-03 05:37:32,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:32" (1/1) ... [2021-11-03 05:37:32,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:32" (1/1) ... [2021-11-03 05:37:32,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:37:32,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:37:32,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:37:32,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:37:32,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:32" (1/1) ... [2021-11-03 05:37:32,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:37:32,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:37:32,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:37:32,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:37:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 05:37:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-11-03 05:37:32,937 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-11-03 05:37:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-11-03 05:37:32,937 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-11-03 05:37:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 05:37:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-03 05:37:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:37:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:37:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:37:32,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-03 05:37:32,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:37:32,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:37:32,939 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-03 05:37:33,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:37:33,203 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-03 05:37:33,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:37:33 BoogieIcfgContainer [2021-11-03 05:37:33,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:37:33,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:37:33,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:37:33,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:37:33,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:37:32" (1/3) ... [2021-11-03 05:37:33,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd11236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:37:33, skipping insertion in model container [2021-11-03 05:37:33,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:37:32" (2/3) ... [2021-11-03 05:37:33,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd11236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:37:33, skipping insertion in model container [2021-11-03 05:37:33,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:37:33" (3/3) ... [2021-11-03 05:37:33,218 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2021-11-03 05:37:33,233 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-03 05:37:33,234 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:37:33,234 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-03 05:37:33,234 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-03 05:37:33,274 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,274 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,274 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,274 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,275 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,275 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,275 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,275 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,276 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,276 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,276 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,276 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,277 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,277 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,277 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,277 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,278 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,278 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,278 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,278 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,278 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,279 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,279 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,279 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,280 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,280 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,280 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,280 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,281 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,281 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,281 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,281 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,282 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,282 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,282 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,282 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,282 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,286 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,286 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,286 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,286 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,287 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,287 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,291 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,296 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,296 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,296 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,297 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,297 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,297 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 05:37:33,305 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-03 05:37:33,350 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:37:33,356 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 [2021-11-03 05:37:33,356 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 05:37:33,375 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-03 05:37:33,385 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 78 transitions, 172 flow [2021-11-03 05:37:33,392 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 78 transitions, 172 flow [2021-11-03 05:37:33,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 78 transitions, 172 flow [2021-11-03 05:37:33,440 INFO L129 PetriNetUnfolder]: 6/76 cut-off events. [2021-11-03 05:37:33,441 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-03 05:37:33,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 76 events. 6/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2021-11-03 05:37:33,448 INFO L116 LiptonReduction]: Number of co-enabled transitions 1188 [2021-11-03 05:37:35,802 INFO L131 LiptonReduction]: Checked pairs total: 3390 [2021-11-03 05:37:35,802 INFO L133 LiptonReduction]: Total number of compositions: 57 [2021-11-03 05:37:35,810 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 33 transitions, 82 flow [2021-11-03 05:37:35,839 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 230 states, 227 states have (on average 2.590308370044053) internal successors, (588), 229 states have internal predecessors, (588), 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) [2021-11-03 05:37:35,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 230 states, 227 states have (on average 2.590308370044053) internal successors, (588), 229 states have internal predecessors, (588), 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) [2021-11-03 05:37:35,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 05:37:35,848 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:37:35,848 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:37:35,849 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-03 05:37:35,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:37:35,854 INFO L85 PathProgramCache]: Analyzing trace with hash 554923094, now seen corresponding path program 1 times [2021-11-03 05:37:35,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:37:35,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228320177] [2021-11-03 05:37:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:37:35,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:37:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:37:36,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:37:36,144 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:37:36,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228320177] [2021-11-03 05:37:36,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228320177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:37:36,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:37:36,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 05:37:36,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391362951] [2021-11-03 05:37:36,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:37:36,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:37:36,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:37:36,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:37:36,177 INFO L87 Difference]: Start difference. First operand has 230 states, 227 states have (on average 2.590308370044053) internal successors, (588), 229 states have internal predecessors, (588), 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 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) [2021-11-03 05:37:36,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:37:36,215 INFO L93 Difference]: Finished difference Result 236 states and 542 transitions. [2021-11-03 05:37:36,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:37:36,217 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 [2021-11-03 05:37:36,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:37:36,228 INFO L225 Difference]: With dead ends: 236 [2021-11-03 05:37:36,229 INFO L226 Difference]: Without dead ends: 208 [2021-11-03 05:37:36,230 INFO L786 BasicCegarLoop]: 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 [2021-11-03 05:37:36,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-03 05:37:36,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 196. [2021-11-03 05:37:36,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 192 states have (on average 2.375) internal successors, (456), 195 states have internal predecessors, (456), 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) [2021-11-03 05:37:36,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 456 transitions. [2021-11-03 05:37:36,285 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 456 transitions. Word has length 8 [2021-11-03 05:37:36,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:37:36,286 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 456 transitions. [2021-11-03 05:37:36,287 INFO L471 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) [2021-11-03 05:37:36,287 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 456 transitions. [2021-11-03 05:37:36,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 05:37:36,290 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:37:36,290 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:37:36,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:37:36,291 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-03 05:37:36,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:37:36,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2085363605, now seen corresponding path program 1 times [2021-11-03 05:37:36,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:37:36,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986453728] [2021-11-03 05:37:36,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:37:36,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:37:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:37:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:37:36,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:37:36,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986453728] [2021-11-03 05:37:36,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986453728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:37:36,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:37:36,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 05:37:36,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291645747] [2021-11-03 05:37:36,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:37:36,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:37:36,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:37:36,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:37:36,407 INFO L87 Difference]: Start difference. First operand 196 states and 456 transitions. Second operand has 3 states, 2 states have (on average 5.0) 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) [2021-11-03 05:37:36,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:37:36,430 INFO L93 Difference]: Finished difference Result 186 states and 420 transitions. [2021-11-03 05:37:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:37:36,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) 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 [2021-11-03 05:37:36,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:37:36,436 INFO L225 Difference]: With dead ends: 186 [2021-11-03 05:37:36,436 INFO L226 Difference]: Without dead ends: 140 [2021-11-03 05:37:36,437 INFO L786 BasicCegarLoop]: 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 [2021-11-03 05:37:36,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-03 05:37:36,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-11-03 05:37:36,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 136 states have (on average 2.323529411764706) internal successors, (316), 139 states have internal predecessors, (316), 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) [2021-11-03 05:37:36,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 316 transitions. [2021-11-03 05:37:36,457 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 316 transitions. Word has length 10 [2021-11-03 05:37:36,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:37:36,457 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 316 transitions. [2021-11-03 05:37:36,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) 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) [2021-11-03 05:37:36,458 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 316 transitions. [2021-11-03 05:37:36,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 05:37:36,461 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:37:36,461 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:37:36,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:37:36,462 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-03 05:37:36,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:37:36,463 INFO L85 PathProgramCache]: Analyzing trace with hash 978497258, now seen corresponding path program 1 times [2021-11-03 05:37:36,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:37:36,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556389698] [2021-11-03 05:37:36,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:37:36,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:37:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:37:36,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:37:36,591 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:37:36,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556389698] [2021-11-03 05:37:36,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556389698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:37:36,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:37:36,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 05:37:36,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128431024] [2021-11-03 05:37:36,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:37:36,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:37:36,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:37:36,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:37:36,594 INFO L87 Difference]: Start difference. First operand 140 states and 316 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-11-03 05:37:36,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:37:36,702 INFO L93 Difference]: Finished difference Result 210 states and 491 transitions. [2021-11-03 05:37:36,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:37:36,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2021-11-03 05:37:36,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:37:36,707 INFO L225 Difference]: With dead ends: 210 [2021-11-03 05:37:36,707 INFO L226 Difference]: Without dead ends: 140 [2021-11-03 05:37:36,708 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:37:36,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-03 05:37:36,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 128. [2021-11-03 05:37:36,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 124 states have (on average 2.2983870967741935) internal successors, (285), 127 states have internal predecessors, (285), 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) [2021-11-03 05:37:36,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 285 transitions. [2021-11-03 05:37:36,732 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 285 transitions. Word has length 15 [2021-11-03 05:37:36,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:37:36,733 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 285 transitions. [2021-11-03 05:37:36,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-11-03 05:37:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 285 transitions. [2021-11-03 05:37:36,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 05:37:36,738 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:37:36,739 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:37:36,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 05:37:36,740 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-03 05:37:36,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:37:36,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1358916358, now seen corresponding path program 2 times [2021-11-03 05:37:36,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:37:36,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135257635] [2021-11-03 05:37:36,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:37:36,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:37:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:37:36,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:37:36,841 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:37:36,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135257635] [2021-11-03 05:37:36,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135257635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:37:36,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:37:36,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 05:37:36,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016819240] [2021-11-03 05:37:36,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:37:36,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:37:36,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:37:36,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:37:36,844 INFO L87 Difference]: Start difference. First operand 128 states and 285 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-11-03 05:37:36,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:37:36,891 INFO L93 Difference]: Finished difference Result 90 states and 214 transitions. [2021-11-03 05:37:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:37:36,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2021-11-03 05:37:36,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:37:36,892 INFO L225 Difference]: With dead ends: 90 [2021-11-03 05:37:36,892 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 05:37:36,893 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:37:36,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 05:37:36,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 05:37:36,893 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) [2021-11-03 05:37:36,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 05:37:36,894 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-11-03 05:37:36,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:37:36,894 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 05:37:36,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-11-03 05:37:36,894 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 05:37:36,895 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 05:37:36,897 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:37:36,897 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:37:36,898 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-03 05:37:36,898 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-03 05:37:36,898 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:37:36,898 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:37:36,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 05:37:36,901 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-11-03 05:37:36,904 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-03 05:37:36,904 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:37:36,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:37:36 BasicIcfg [2021-11-03 05:37:36,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:37:36,907 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:37:36,907 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:37:36,907 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:37:36,908 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:37:33" (3/4) ... [2021-11-03 05:37:36,910 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 05:37:36,915 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2021-11-03 05:37:36,915 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2021-11-03 05:37:36,919 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-03 05:37:36,919 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-03 05:37:36,919 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 05:37:36,920 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 05:37:36,949 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 05:37:36,949 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:37:36,951 INFO L168 Benchmark]: Toolchain (without parser) took 4772.80 ms. Allocated memory was 104.9 MB in the beginning and 132.1 MB in the end (delta: 27.3 MB). Free memory was 64.0 MB in the beginning and 56.2 MB in the end (delta: 7.8 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. [2021-11-03 05:37:36,951 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 104.9 MB. Free memory is still 81.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:37:36,953 INFO L168 Benchmark]: CACSL2BoogieTranslator took 566.62 ms. Allocated memory is still 104.9 MB. Free memory was 63.8 MB in the beginning and 70.9 MB in the end (delta: -7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:37:36,954 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.65 ms. Allocated memory is still 104.9 MB. Free memory was 70.9 MB in the beginning and 69.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:37:36,955 INFO L168 Benchmark]: Boogie Preprocessor took 39.00 ms. Allocated memory is still 104.9 MB. Free memory was 69.0 MB in the beginning and 67.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:37:36,955 INFO L168 Benchmark]: RCFGBuilder took 348.84 ms. Allocated memory is still 104.9 MB. Free memory was 67.6 MB in the beginning and 55.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:37:36,956 INFO L168 Benchmark]: TraceAbstraction took 3698.90 ms. Allocated memory was 104.9 MB in the beginning and 132.1 MB in the end (delta: 27.3 MB). Free memory was 55.1 MB in the beginning and 59.2 MB in the end (delta: -4.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. [2021-11-03 05:37:36,956 INFO L168 Benchmark]: Witness Printer took 42.55 ms. Allocated memory is still 132.1 MB. Free memory was 58.2 MB in the beginning and 56.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:37:36,959 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 104.9 MB. Free memory is still 81.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 566.62 ms. Allocated memory is still 104.9 MB. Free memory was 63.8 MB in the beginning and 70.9 MB in the end (delta: -7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.65 ms. Allocated memory is still 104.9 MB. Free memory was 70.9 MB in the beginning and 69.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.00 ms. Allocated memory is still 104.9 MB. Free memory was 69.0 MB in the beginning and 67.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 348.84 ms. Allocated memory is still 104.9 MB. Free memory was 67.6 MB in the beginning and 55.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3698.90 ms. Allocated memory was 104.9 MB in the beginning and 132.1 MB in the end (delta: 27.3 MB). Free memory was 55.1 MB in the beginning and 59.2 MB in the end (delta: -4.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. * Witness Printer took 42.55 ms. Allocated memory is still 132.1 MB. Free memory was 58.2 MB in the beginning and 56.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 79 PlacesBefore, 36 PlacesAfterwards, 78 TransitionsBefore, 33 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 5 FixpointIterations, 24 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 57 TotalNumberOfCompositions, 3390 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1767, positive: 1621, positive conditional: 0, positive unconditional: 1621, negative: 146, negative conditional: 0, negative unconditional: 146, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 919, positive: 879, positive conditional: 0, positive unconditional: 879, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 919, positive: 867, positive conditional: 0, positive unconditional: 867, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 52, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 71, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1767, positive: 742, positive conditional: 0, positive unconditional: 742, negative: 106, negative conditional: 0, negative unconditional: 106, unknown: 919, unknown conditional: 0, unknown unconditional: 919] , Statistics on independence cache: Total cache size (in pairs): 170, Positive cache size: 147, Positive conditional cache size: 0, Positive unconditional cache size: 147, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23 - 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: 753]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 725]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 107 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 142 SDtfs, 107 SDslu, 174 SDs, 0 SdLazy, 119 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=0, 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-03 05:37:37,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667eebd8-bcd5-4c7c-9a9e-0ca3861b0b69/bin/utaipan-aC7eJsxGYH/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