./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/dekker.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/dekker.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/bin/utaipan-WLngWcDbfI --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 b09e522566a82367f1e090dbdcfe12204e8a578a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:07,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:07,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:07,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:07,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:07,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:07,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:07,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:07,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:07,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:07,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:07,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:07,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:07,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:07,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:07,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:07,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:07,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:07,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:07,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:07,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:07,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:07,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:07,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:07,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:07,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:07,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:07,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:07,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:07,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:07,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:07,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:07,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:07,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:07,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:07,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:07,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:07,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:07,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:07,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:07,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:07,899 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:27:07,946 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:07,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:07,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:07,948 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:07,948 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:07,949 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:07,949 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:07,949 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:07,949 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:07,950 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:07,951 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:07,951 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:07,951 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:07,952 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:07,952 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:07,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:07,953 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:07,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:07,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:07,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:07,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:07,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:07,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:07,955 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:07,955 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:07,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:07,955 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:07,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:07,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:07,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:07,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:07,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:07,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:07,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:07,959 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:07,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:07,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:07,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:07,960 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:07,960 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_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b09e522566a82367f1e090dbdcfe12204e8a578a [2021-10-11 02:27:08,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:08,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:08,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:08,246 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:08,247 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:08,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-atomic/dekker.i [2021-10-11 02:27:08,326 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/bin/utaipan-WLngWcDbfI/data/c7cacff78/4b98641a290744d9a8c77f967f1fdfe6/FLAGa59ea1e2c [2021-10-11 02:27:08,869 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:08,874 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/sv-benchmarks/c/pthread-atomic/dekker.i [2021-10-11 02:27:08,901 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/bin/utaipan-WLngWcDbfI/data/c7cacff78/4b98641a290744d9a8c77f967f1fdfe6/FLAGa59ea1e2c [2021-10-11 02:27:09,140 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/bin/utaipan-WLngWcDbfI/data/c7cacff78/4b98641a290744d9a8c77f967f1fdfe6 [2021-10-11 02:27:09,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:09,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:09,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:09,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:09,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:09,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:09" (1/1) ... [2021-10-11 02:27:09,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d865fde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:09, skipping insertion in model container [2021-10-11 02:27:09,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:09" (1/1) ... [2021-10-11 02:27:09,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:09,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:09,415 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-10-11 02:27:09,621 WARN L226 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_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/sv-benchmarks/c/pthread-atomic/dekker.i[31403,31416] [2021-10-11 02:27:09,628 WARN L226 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_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/sv-benchmarks/c/pthread-atomic/dekker.i[32483,32496] [2021-10-11 02:27:09,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:09,643 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:09,659 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-10-11 02:27:09,682 WARN L226 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_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/sv-benchmarks/c/pthread-atomic/dekker.i[31403,31416] [2021-10-11 02:27:09,690 WARN L226 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_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/sv-benchmarks/c/pthread-atomic/dekker.i[32483,32496] [2021-10-11 02:27:09,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:09,785 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:09,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:09 WrapperNode [2021-10-11 02:27:09,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:09,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:09,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:09,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:09,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:09" (1/1) ... [2021-10-11 02:27:09,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:09" (1/1) ... [2021-10-11 02:27:09,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:09,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:09,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:09,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:09,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:09" (1/1) ... [2021-10-11 02:27:09,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:09" (1/1) ... [2021-10-11 02:27:09,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:09" (1/1) ... [2021-10-11 02:27:09,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:09" (1/1) ... [2021-10-11 02:27:09,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:09" (1/1) ... [2021-10-11 02:27:09,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:09" (1/1) ... [2021-10-11 02:27:09,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:09" (1/1) ... [2021-10-11 02:27:09,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:09,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:09,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:09,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:09,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:09" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:27:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-10-11 02:27:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-10-11 02:27:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-10-11 02:27:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-10-11 02:27:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:27:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:27:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:27:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:27:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:27:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:09,943 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 02:27:10,375 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:10,376 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 02:27:10,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:10 BoogieIcfgContainer [2021-10-11 02:27:10,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:10,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:10,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:10,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:10,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:09" (1/3) ... [2021-10-11 02:27:10,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59398cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:10, skipping insertion in model container [2021-10-11 02:27:10,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:09" (2/3) ... [2021-10-11 02:27:10,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59398cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:10, skipping insertion in model container [2021-10-11 02:27:10,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:10" (3/3) ... [2021-10-11 02:27:10,388 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2021-10-11 02:27:10,403 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:27:10,403 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:10,407 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:27:10,408 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:27:10,440 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,441 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,441 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,441 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,441 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,442 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,442 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,442 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,443 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,443 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,443 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,443 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,444 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,444 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,444 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,445 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,445 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,445 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,446 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,446 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,446 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,447 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,447 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,447 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,448 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,448 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,448 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,448 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,449 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,449 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,449 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,449 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,450 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,450 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,451 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,451 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,452 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,452 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,453 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,453 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,453 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,453 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,454 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,454 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,454 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,455 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,455 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,455 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,456 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,456 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,456 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,456 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,457 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,457 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,458 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,458 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,458 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,458 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,459 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,459 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,459 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,459 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,460 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,460 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,460 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,461 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,463 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,463 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,464 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,464 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,464 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,464 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,469 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,469 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,470 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,470 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,470 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,471 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:27:10,478 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-11 02:27:10,494 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-11 02:27:10,535 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:10,537 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:10,537 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:10,538 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:10,538 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:10,539 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:10,539 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:10,539 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:10,565 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:27:10,567 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 96 transitions, 214 flow [2021-10-11 02:27:10,571 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 96 transitions, 214 flow [2021-10-11 02:27:10,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 96 transitions, 214 flow [2021-10-11 02:27:10,662 INFO L129 PetriNetUnfolder]: 14/96 cut-off events. [2021-10-11 02:27:10,662 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-11 02:27:10,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 96 events. 14/96 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 166 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-10-11 02:27:10,685 INFO L116 LiptonReduction]: Number of co-enabled transitions 2028 [2021-10-11 02:27:13,527 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2021-10-11 02:27:13,882 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2021-10-11 02:27:13,999 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-10-11 02:27:14,011 INFO L131 LiptonReduction]: Checked pairs total: 7289 [2021-10-11 02:27:14,011 INFO L133 LiptonReduction]: Total number of compositions: 70 [2021-10-11 02:27:14,017 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 44 transitions, 110 flow [2021-10-11 02:27:14,046 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 389 states. [2021-10-11 02:27:14,048 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states. [2021-10-11 02:27:14,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:27:14,054 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:14,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:27:14,055 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:14,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:14,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1034037831, now seen corresponding path program 1 times [2021-10-11 02:27:14,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:14,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468099565] [2021-10-11 02:27:14,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:14,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468099565] [2021-10-11 02:27:14,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:14,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:14,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893343840] [2021-10-11 02:27:14,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:14,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:14,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:14,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:14,280 INFO L87 Difference]: Start difference. First operand 389 states. Second operand 3 states. [2021-10-11 02:27:14,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:14,370 INFO L93 Difference]: Finished difference Result 443 states and 1093 transitions. [2021-10-11 02:27:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:14,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 02:27:14,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:14,400 INFO L225 Difference]: With dead ends: 443 [2021-10-11 02:27:14,400 INFO L226 Difference]: Without dead ends: 293 [2021-10-11 02:27:14,401 INFO L677 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 [2021-10-11 02:27:14,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-10-11 02:27:14,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 275. [2021-10-11 02:27:14,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2021-10-11 02:27:14,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 728 transitions. [2021-10-11 02:27:14,506 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 728 transitions. Word has length 6 [2021-10-11 02:27:14,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:14,507 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 728 transitions. [2021-10-11 02:27:14,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:14,508 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 728 transitions. [2021-10-11 02:27:14,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:27:14,509 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:14,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:14,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:14,510 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:14,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:14,514 INFO L82 PathProgramCache]: Analyzing trace with hash 2002246474, now seen corresponding path program 1 times [2021-10-11 02:27:14,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:14,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492216065] [2021-10-11 02:27:14,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:14,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492216065] [2021-10-11 02:27:14,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:14,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:14,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180652109] [2021-10-11 02:27:14,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:14,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:14,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:14,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:14,608 INFO L87 Difference]: Start difference. First operand 275 states and 728 transitions. Second operand 3 states. [2021-10-11 02:27:14,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:14,640 INFO L93 Difference]: Finished difference Result 266 states and 687 transitions. [2021-10-11 02:27:14,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:14,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-10-11 02:27:14,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:14,643 INFO L225 Difference]: With dead ends: 266 [2021-10-11 02:27:14,644 INFO L226 Difference]: Without dead ends: 188 [2021-10-11 02:27:14,646 INFO L677 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 [2021-10-11 02:27:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-11 02:27:14,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-10-11 02:27:14,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2021-10-11 02:27:14,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 491 transitions. [2021-10-11 02:27:14,667 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 491 transitions. Word has length 8 [2021-10-11 02:27:14,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:14,667 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 491 transitions. [2021-10-11 02:27:14,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:14,668 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 491 transitions. [2021-10-11 02:27:14,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:27:14,669 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:14,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:14,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:27:14,670 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:14,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:14,670 INFO L82 PathProgramCache]: Analyzing trace with hash -360489977, now seen corresponding path program 1 times [2021-10-11 02:27:14,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:14,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115254033] [2021-10-11 02:27:14,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:14,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:14,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115254033] [2021-10-11 02:27:14,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:14,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:14,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273767753] [2021-10-11 02:27:14,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:14,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:14,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:14,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:14,787 INFO L87 Difference]: Start difference. First operand 188 states and 491 transitions. Second operand 4 states. [2021-10-11 02:27:14,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:14,859 INFO L93 Difference]: Finished difference Result 258 states and 714 transitions. [2021-10-11 02:27:14,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:14,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:27:14,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:14,867 INFO L225 Difference]: With dead ends: 258 [2021-10-11 02:27:14,867 INFO L226 Difference]: Without dead ends: 234 [2021-10-11 02:27:14,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:14,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-11 02:27:14,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 186. [2021-10-11 02:27:14,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2021-10-11 02:27:14,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 485 transitions. [2021-10-11 02:27:14,884 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 485 transitions. Word has length 11 [2021-10-11 02:27:14,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:14,885 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 485 transitions. [2021-10-11 02:27:14,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:14,887 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 485 transitions. [2021-10-11 02:27:14,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:27:14,895 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:14,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:14,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:27:14,896 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:14,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:14,897 INFO L82 PathProgramCache]: Analyzing trace with hash 411645011, now seen corresponding path program 2 times [2021-10-11 02:27:14,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:14,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273793759] [2021-10-11 02:27:14,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:14,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273793759] [2021-10-11 02:27:14,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:14,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:14,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747904675] [2021-10-11 02:27:14,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:14,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:14,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:14,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:14,977 INFO L87 Difference]: Start difference. First operand 186 states and 485 transitions. Second operand 4 states. [2021-10-11 02:27:15,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:15,028 INFO L93 Difference]: Finished difference Result 212 states and 636 transitions. [2021-10-11 02:27:15,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:15,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:27:15,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:15,029 INFO L225 Difference]: With dead ends: 212 [2021-10-11 02:27:15,029 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:27:15,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:15,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:27:15,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:27:15,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:27:15,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:27:15,030 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-11 02:27:15,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:15,030 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:27:15,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:27:15,031 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:27:15,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:27:15,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:15 BasicIcfg [2021-10-11 02:27:15,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:15,034 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:15,034 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:15,035 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:15,035 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:10" (3/4) ... [2021-10-11 02:27:15,039 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:27:15,045 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2021-10-11 02:27:15,045 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2021-10-11 02:27:15,051 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-11 02:27:15,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:27:15,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:15,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:15,101 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6734fa7a-1ce5-4e59-8b9b-edaa070a7411/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:15,101 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:15,103 INFO L168 Benchmark]: Toolchain (without parser) took 5958.29 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 79.2 MB in the beginning and 79.3 MB in the end (delta: -140.0 kB). Peak memory consumption was 49.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:15,103 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 109.1 MB. Free memory is still 65.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:15,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 630.95 ms. Allocated memory is still 109.1 MB. Free memory was 78.9 MB in the beginning and 63.3 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:15,105 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.46 ms. Allocated memory is still 109.1 MB. Free memory was 63.3 MB in the beginning and 61.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:15,106 INFO L168 Benchmark]: Boogie Preprocessor took 30.57 ms. Allocated memory is still 109.1 MB. Free memory was 61.6 MB in the beginning and 60.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:15,106 INFO L168 Benchmark]: RCFGBuilder took 516.83 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 60.1 MB in the beginning and 91.5 MB in the end (delta: -31.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:15,107 INFO L168 Benchmark]: TraceAbstraction took 4653.67 ms. Allocated memory was 132.1 MB in the beginning and 159.4 MB in the end (delta: 27.3 MB). Free memory was 90.8 MB in the beginning and 81.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 36.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:15,108 INFO L168 Benchmark]: Witness Printer took 67.21 ms. Allocated memory is still 159.4 MB. Free memory was 81.5 MB in the beginning and 79.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:15,112 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 109.1 MB. Free memory is still 65.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 630.95 ms. Allocated memory is still 109.1 MB. Free memory was 78.9 MB in the beginning and 63.3 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.46 ms. Allocated memory is still 109.1 MB. Free memory was 63.3 MB in the beginning and 61.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.57 ms. Allocated memory is still 109.1 MB. Free memory was 61.6 MB in the beginning and 60.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 516.83 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 60.1 MB in the beginning and 91.5 MB in the end (delta: -31.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4653.67 ms. Allocated memory was 132.1 MB in the beginning and 159.4 MB in the end (delta: 27.3 MB). Free memory was 90.8 MB in the beginning and 81.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 36.1 MB. Max. memory is 16.1 GB. * Witness Printer took 67.21 ms. Allocated memory is still 159.4 MB. Free memory was 81.5 MB in the beginning and 79.3 MB in the end (delta: 2.2 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 1264 VarBasedMoverChecksPositive, 67 VarBasedMoverChecksNegative, 24 SemBasedMoverChecksPositive, 43 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 252 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.4s, 88 PlacesBefore, 42 PlacesAfterwards, 96 TransitionsBefore, 44 TransitionsAfterwards, 2028 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 13 ConcurrentYvCompositions, 6 ChoiceCompositions, 70 TotalNumberOfCompositions, 7289 MoverChecksTotal - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 739]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 82 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 199 SDtfs, 139 SDslu, 155 SDs, 0 SdLazy, 59 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 66 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 518 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...