./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4d3514-cfeb-4edc-a765-ae797a434b11/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4d3514-cfeb-4edc-a765-ae797a434b11/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4d3514-cfeb-4edc-a765-ae797a434b11/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4d3514-cfeb-4edc-a765-ae797a434b11/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4d3514-cfeb-4edc-a765-ae797a434b11/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4d3514-cfeb-4edc-a765-ae797a434b11/bin/utaipan-9zjyvhn0QE --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 cb1d60f6e8ddeffda5f84a499ea5e09b409631d554ff2c668eba77999f4ee779 ............................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 11:14:22,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:14:22,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:14:22,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:14:22,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:14:22,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:14:22,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:14:22,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:14:22,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:14:22,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:14:22,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:14:22,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:14:22,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:14:22,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:14:22,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:14:22,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:14:22,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:14:22,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:14:22,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:14:22,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:14:22,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:14:22,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:14:22,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:14:22,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:14:22,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:14:22,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:14:22,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:14:22,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:14:22,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:14:22,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:14:22,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:14:22,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:14:22,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:14:22,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:14:22,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:14:22,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:14:22,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:14:22,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:14:22,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:14:22,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:14:22,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:14:22,883 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4d3514-cfeb-4edc-a765-ae797a434b11/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 11:14:22,931 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:14:22,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:14:22,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:14:22,933 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:14:22,933 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:14:22,934 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:14:22,934 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 11:14:22,934 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:14:22,934 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:14:22,935 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 11:14:22,942 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 11:14:22,942 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:14:22,942 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 11:14:22,943 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 11:14:22,943 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 11:14:22,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:14:22,944 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:14:22,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 11:14:22,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:14:22,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:14:22,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:14:22,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:14:22,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:14:22,946 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:14:22,946 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:14:22,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:14:22,947 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:14:22,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:14:22,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:14:22,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:14:22,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:14:22,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:14:22,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:14:22,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:14:22,949 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 11:14:22,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 11:14:22,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:14:22,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:14:22,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:14:22,951 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_0b4d3514-cfeb-4edc-a765-ae797a434b11/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4d3514-cfeb-4edc-a765-ae797a434b11/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb1d60f6e8ddeffda5f84a499ea5e09b409631d554ff2c668eba77999f4ee779 [2021-10-24 11:14:23,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:14:23,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:14:23,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:14:23,296 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:14:23,297 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:14:23,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4d3514-cfeb-4edc-a765-ae797a434b11/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c [2021-10-24 11:14:23,366 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4d3514-cfeb-4edc-a765-ae797a434b11/bin/utaipan-9zjyvhn0QE/data/04e7f4061/c6e25b8953114e5e81f40adf768a2a3c/FLAGb7b40de4c [2021-10-24 11:14:23,913 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:14:23,914 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4d3514-cfeb-4edc-a765-ae797a434b11/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c [2021-10-24 11:14:23,928 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4d3514-cfeb-4edc-a765-ae797a434b11/bin/utaipan-9zjyvhn0QE/data/04e7f4061/c6e25b8953114e5e81f40adf768a2a3c/FLAGb7b40de4c [2021-10-24 11:14:24,274 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4d3514-cfeb-4edc-a765-ae797a434b11/bin/utaipan-9zjyvhn0QE/data/04e7f4061/c6e25b8953114e5e81f40adf768a2a3c [2021-10-24 11:14:24,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:14:24,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:14:24,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:14:24,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:14:24,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:14:24,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:14:24" (1/1) ... [2021-10-24 11:14:24,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49642af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:24, skipping insertion in model container [2021-10-24 11:14:24,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:14:24" (1/1) ... [2021-10-24 11:14:24,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:14:24,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:14:24,597 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_0b4d3514-cfeb-4edc-a765-ae797a434b11/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c[2522,2535] [2021-10-24 11:14:24,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:14:24,613 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:14:24,651 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_0b4d3514-cfeb-4edc-a765-ae797a434b11/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c[2522,2535] [2021-10-24 11:14:24,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:14:24,674 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:14:24,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:24 WrapperNode [2021-10-24 11:14:24,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:14:24,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:14:24,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:14:24,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:14:24,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:24" (1/1) ... [2021-10-24 11:14:24,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:24" (1/1) ... [2021-10-24 11:14:24,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:14:24,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:14:24,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:14:24,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:14:24,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:24" (1/1) ... [2021-10-24 11:14:24,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:24" (1/1) ... [2021-10-24 11:14:24,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:24" (1/1) ... [2021-10-24 11:14:24,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:24" (1/1) ... [2021-10-24 11:14:24,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:24" (1/1) ... [2021-10-24 11:14:24,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:24" (1/1) ... [2021-10-24 11:14:24,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:24" (1/1) ... [2021-10-24 11:14:24,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:14:24,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:14:24,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:14:24,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:14:24,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:24" (1/1) ... [2021-10-24 11:14:24,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:14:24,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4d3514-cfeb-4edc-a765-ae797a434b11/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:14:24,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4d3514-cfeb-4edc-a765-ae797a434b11/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:14:24,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4d3514-cfeb-4edc-a765-ae797a434b11/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:14:24,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-24 11:14:24,887 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-24 11:14:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-24 11:14:24,888 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-24 11:14:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 11:14:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:14:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 11:14:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-24 11:14:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-24 11:14:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:14:24,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:14:24,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 11:14:24,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 11:14:24,893 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-24 11:14:25,410 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:14:25,411 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-10-24 11:14:25,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:14:25 BoogieIcfgContainer [2021-10-24 11:14:25,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:14:25,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:14:25,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:14:25,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:14:25,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:14:24" (1/3) ... [2021-10-24 11:14:25,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222864ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:14:25, skipping insertion in model container [2021-10-24 11:14:25,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:24" (2/3) ... [2021-10-24 11:14:25,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222864ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:14:25, skipping insertion in model container [2021-10-24 11:14:25,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:14:25" (3/3) ... [2021-10-24 11:14:25,425 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bluetooth.wvr.c [2021-10-24 11:14:25,431 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-24 11:14:25,431 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:14:25,431 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 11:14:25,432 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-24 11:14:25,461 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,461 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,462 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,462 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,462 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,462 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,463 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,463 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,463 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,464 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,464 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,464 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,466 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,466 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,466 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,467 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,467 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,467 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,467 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,468 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,468 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,468 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,468 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,469 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,469 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,469 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,469 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,470 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,470 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,470 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,470 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,473 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,474 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,474 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,474 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,475 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,481 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,481 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,481 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,482 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 11:14:25,496 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-24 11:14:25,540 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:14:25,548 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 [2021-10-24 11:14:25,548 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-24 11:14:25,566 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-24 11:14:25,577 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 127 transitions, 270 flow [2021-10-24 11:14:25,580 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 127 transitions, 270 flow [2021-10-24 11:14:25,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 124 places, 127 transitions, 270 flow [2021-10-24 11:14:25,644 INFO L129 PetriNetUnfolder]: 10/125 cut-off events. [2021-10-24 11:14:25,645 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-24 11:14:25,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 125 events. 10/125 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2021-10-24 11:14:25,651 INFO L116 LiptonReduction]: Number of co-enabled transitions 642 [2021-10-24 11:14:30,965 INFO L131 LiptonReduction]: Checked pairs total: 2684 [2021-10-24 11:14:30,965 INFO L133 LiptonReduction]: Total number of compositions: 135 [2021-10-24 11:14:30,973 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2021-10-24 11:14:30,991 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 114 states, 113 states have (on average 2.353982300884956) internal successors, (266), 113 states have internal predecessors, (266), 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) [2021-10-24 11:14:30,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 113 states have (on average 2.353982300884956) internal successors, (266), 113 states have internal predecessors, (266), 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) [2021-10-24 11:14:31,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-24 11:14:31,002 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:31,003 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:14:31,003 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-24 11:14:31,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:31,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1112020224, now seen corresponding path program 1 times [2021-10-24 11:14:31,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:14:31,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634013443] [2021-10-24 11:14:31,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:31,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:14:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:14:31,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:14:31,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:14:31,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634013443] [2021-10-24 11:14:31,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634013443] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:14:31,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:14:31,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 11:14:31,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226287614] [2021-10-24 11:14:31,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:14:31,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:14:31,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:14:31,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:14:31,438 INFO L87 Difference]: Start difference. First operand has 114 states, 113 states have (on average 2.353982300884956) internal successors, (266), 113 states have internal predecessors, (266), 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 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-10-24 11:14:31,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:14:31,500 INFO L93 Difference]: Finished difference Result 127 states and 284 transitions. [2021-10-24 11:14:31,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 11:14:31,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2021-10-24 11:14:31,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:14:31,508 INFO L225 Difference]: With dead ends: 127 [2021-10-24 11:14:31,509 INFO L226 Difference]: Without dead ends: 32 [2021-10-24 11:14:31,510 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:14:31,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-24 11:14:31,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-24 11:14:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 31 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:14:31,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2021-10-24 11:14:31,556 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 18 [2021-10-24 11:14:31,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:14:31,557 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2021-10-24 11:14:31,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-10-24 11:14:31,558 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2021-10-24 11:14:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-24 11:14:31,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:31,561 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:14:31,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 11:14:31,562 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-24 11:14:31,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:31,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1713822858, now seen corresponding path program 2 times [2021-10-24 11:14:31,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:14:31,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366954289] [2021-10-24 11:14:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:31,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:14:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:14:31,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:14:31,680 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:14:31,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366954289] [2021-10-24 11:14:31,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366954289] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:14:31,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:14:31,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 11:14:31,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692378430] [2021-10-24 11:14:31,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:14:31,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:14:31,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:14:31,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:14:31,685 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-10-24 11:14:31,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:14:31,705 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2021-10-24 11:14:31,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:14:31,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2021-10-24 11:14:31,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:14:31,706 INFO L225 Difference]: With dead ends: 31 [2021-10-24 11:14:31,707 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 11:14:31,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:14:31,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 11:14:31,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 11:14:31,708 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) [2021-10-24 11:14:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 11:14:31,709 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-10-24 11:14:31,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:14:31,709 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 11:14:31,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-10-24 11:14:31,710 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 11:14:31,710 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 11:14:31,712 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:14:31,713 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-24 11:14:31,715 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-24 11:14:31,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 11:14:31,719 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-24 11:14:31,719 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:14:31,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:14:31 BasicIcfg [2021-10-24 11:14:31,721 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:14:31,723 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:14:31,724 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:14:31,724 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:14:31,724 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:14:25" (3/4) ... [2021-10-24 11:14:31,729 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 11:14:31,734 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-24 11:14:31,734 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-24 11:14:31,742 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-24 11:14:31,743 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-24 11:14:31,743 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 11:14:31,743 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 11:14:31,797 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4d3514-cfeb-4edc-a765-ae797a434b11/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 11:14:31,798 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:14:31,799 INFO L168 Benchmark]: Toolchain (without parser) took 7516.42 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 69.9 MB in the beginning and 47.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 45.8 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:31,800 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 109.1 MB. Free memory was 86.4 MB in the beginning and 86.4 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:14:31,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.68 ms. Allocated memory is still 109.1 MB. Free memory was 69.6 MB in the beginning and 83.8 MB in the end (delta: -14.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:31,801 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.89 ms. Allocated memory is still 109.1 MB. Free memory was 83.8 MB in the beginning and 82.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:14:31,801 INFO L168 Benchmark]: Boogie Preprocessor took 55.27 ms. Allocated memory is still 109.1 MB. Free memory was 82.1 MB in the beginning and 80.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:31,802 INFO L168 Benchmark]: RCFGBuilder took 615.73 ms. Allocated memory is still 109.1 MB. Free memory was 80.8 MB in the beginning and 66.2 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:31,802 INFO L168 Benchmark]: TraceAbstraction took 6306.13 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 65.9 MB in the beginning and 50.9 MB in the end (delta: 15.1 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:31,803 INFO L168 Benchmark]: Witness Printer took 74.40 ms. Allocated memory is still 132.1 MB. Free memory was 50.9 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:31,805 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 109.1 MB. Free memory was 86.4 MB in the beginning and 86.4 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 389.68 ms. Allocated memory is still 109.1 MB. Free memory was 69.6 MB in the beginning and 83.8 MB in the end (delta: -14.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.89 ms. Allocated memory is still 109.1 MB. Free memory was 83.8 MB in the beginning and 82.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.27 ms. Allocated memory is still 109.1 MB. Free memory was 82.1 MB in the beginning and 80.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 615.73 ms. Allocated memory is still 109.1 MB. Free memory was 80.8 MB in the beginning and 66.2 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6306.13 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 65.9 MB in the beginning and 50.9 MB in the end (delta: 15.1 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. * Witness Printer took 74.40 ms. Allocated memory is still 132.1 MB. Free memory was 50.9 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5384.6ms, 124 PlacesBefore, 30 PlacesAfterwards, 127 TransitionsBefore, 25 TransitionsAfterwards, 642 CoEnabledTransitionPairs, 7 FixpointIterations, 79 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 23 TrivialYvCompositions, 9 ConcurrentYvCompositions, 8 ChoiceCompositions, 135 TotalNumberOfCompositions, 2684 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1723, positive: 1547, positive conditional: 0, positive unconditional: 1547, negative: 176, negative conditional: 0, negative unconditional: 176, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 571, positive: 532, positive conditional: 0, positive unconditional: 532, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 571, positive: 526, positive conditional: 0, positive unconditional: 526, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 45, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 120, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 110, negative conditional: 0, negative unconditional: 110, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1723, positive: 1015, positive conditional: 0, positive unconditional: 1015, negative: 137, negative conditional: 0, negative unconditional: 137, unknown: 571, unknown conditional: 0, unknown unconditional: 571] , Statistics on independence cache: Total cache size (in pairs): 132, Positive cache size: 112, Positive conditional cache size: 0, Positive unconditional cache size: 112, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 93]: 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, 144 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 6180.3ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 13.8ms, AutomataDifference: 125.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5443.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 53 SDtfs, 38 SDslu, 46 SDs, 0 SdLazy, 10 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 33.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.4ms SsaConstructionTime, 156.4ms SatisfiabilityAnalysisTime, 250.0ms InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 230 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-24 11:14:31,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b4d3514-cfeb-4edc-a765-ae797a434b11/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...