./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/peterson.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e3ccc8-82cc-4b67-a664-3afcb7893baa/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e3ccc8-82cc-4b67-a664-3afcb7893baa/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e3ccc8-82cc-4b67-a664-3afcb7893baa/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e3ccc8-82cc-4b67-a664-3afcb7893baa/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/peterson.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e3ccc8-82cc-4b67-a664-3afcb7893baa/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e3ccc8-82cc-4b67-a664-3afcb7893baa/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ee3d1a41e169e13d6fb9bc974b1d8f7c8de5421cb2dfbc7e3d9a400662188398 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:01:20,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:01:20,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:01:20,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:01:20,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:01:20,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:01:20,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:01:20,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:01:20,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:01:20,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:01:20,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:01:21,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:01:21,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:01:21,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:01:21,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:01:21,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:01:21,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:01:21,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:01:21,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:01:21,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:01:21,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:01:21,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:01:21,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:01:21,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:01:21,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:01:21,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:01:21,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:01:21,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:01:21,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:01:21,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:01:21,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:01:21,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:01:21,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:01:21,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:01:21,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:01:21,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:01:21,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:01:21,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:01:21,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:01:21,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:01:21,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:01:21,047 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e3ccc8-82cc-4b67-a664-3afcb7893baa/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:01:21,073 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:01:21,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:01:21,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:01:21,074 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:01:21,075 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:01:21,075 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:01:21,075 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:01:21,075 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:01:21,076 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:01:21,076 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:01:21,076 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:01:21,076 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:01:21,077 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:01:21,077 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:01:21,077 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:01:21,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:01:21,078 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:01:21,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:01:21,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:01:21,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:01:21,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:01:21,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:01:21,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:01:21,080 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:01:21,080 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:01:21,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:01:21,080 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:01:21,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:01:21,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:01:21,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:01:21,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:01:21,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:01:21,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:01:21,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:01:21,082 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:01:21,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:01:21,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:01:21,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:01:21,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:01:21,083 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_92e3ccc8-82cc-4b67-a664-3afcb7893baa/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e3ccc8-82cc-4b67-a664-3afcb7893baa/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee3d1a41e169e13d6fb9bc974b1d8f7c8de5421cb2dfbc7e3d9a400662188398 [2021-11-07 02:01:21,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:01:21,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:01:21,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:01:21,431 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:01:21,432 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:01:21,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e3ccc8-82cc-4b67-a664-3afcb7893baa/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/pthread-atomic/peterson.i [2021-11-07 02:01:21,508 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e3ccc8-82cc-4b67-a664-3afcb7893baa/bin/utaipan-UUZaoUuFF8/data/5fde2401b/f81f178be62249d0a7844379b23f5c03/FLAGec4cc5eb7 [2021-11-07 02:01:22,010 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:01:22,010 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e3ccc8-82cc-4b67-a664-3afcb7893baa/sv-benchmarks/c/pthread-atomic/peterson.i [2021-11-07 02:01:22,037 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e3ccc8-82cc-4b67-a664-3afcb7893baa/bin/utaipan-UUZaoUuFF8/data/5fde2401b/f81f178be62249d0a7844379b23f5c03/FLAGec4cc5eb7 [2021-11-07 02:01:22,320 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e3ccc8-82cc-4b67-a664-3afcb7893baa/bin/utaipan-UUZaoUuFF8/data/5fde2401b/f81f178be62249d0a7844379b23f5c03 [2021-11-07 02:01:22,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:01:22,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:01:22,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:01:22,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:01:22,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:01:22,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:22" (1/1) ... [2021-11-07 02:01:22,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9f27558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:22, skipping insertion in model container [2021-11-07 02:01:22,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:22" (1/1) ... [2021-11-07 02:01:22,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:01:22,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:01:22,653 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-07 02:01:22,846 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_92e3ccc8-82cc-4b67-a664-3afcb7893baa/sv-benchmarks/c/pthread-atomic/peterson.i[30997,31010] [2021-11-07 02:01:22,857 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_92e3ccc8-82cc-4b67-a664-3afcb7893baa/sv-benchmarks/c/pthread-atomic/peterson.i[31682,31695] [2021-11-07 02:01:22,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:01:22,876 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:01:22,902 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-07 02:01:22,919 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_92e3ccc8-82cc-4b67-a664-3afcb7893baa/sv-benchmarks/c/pthread-atomic/peterson.i[30997,31010] [2021-11-07 02:01:22,922 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_92e3ccc8-82cc-4b67-a664-3afcb7893baa/sv-benchmarks/c/pthread-atomic/peterson.i[31682,31695] [2021-11-07 02:01:22,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:01:22,959 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:01:22,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:22 WrapperNode [2021-11-07 02:01:22,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:01:22,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:01:22,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:01:22,965 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:01:22,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:22" (1/1) ... [2021-11-07 02:01:23,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:22" (1/1) ... [2021-11-07 02:01:23,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:01:23,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:01:23,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:01:23,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:01:23,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:22" (1/1) ... [2021-11-07 02:01:23,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:22" (1/1) ... [2021-11-07 02:01:23,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:22" (1/1) ... [2021-11-07 02:01:23,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:22" (1/1) ... [2021-11-07 02:01:23,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:22" (1/1) ... [2021-11-07 02:01:23,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:22" (1/1) ... [2021-11-07 02:01:23,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:22" (1/1) ... [2021-11-07 02:01:23,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:01:23,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:01:23,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:01:23,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:01:23,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:22" (1/1) ... [2021-11-07 02:01:23,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:01:23,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e3ccc8-82cc-4b67-a664-3afcb7893baa/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:01:23,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e3ccc8-82cc-4b67-a664-3afcb7893baa/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:01:23,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e3ccc8-82cc-4b67-a664-3afcb7893baa/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:01:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 02:01:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-11-07 02:01:23,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-11-07 02:01:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-11-07 02:01:23,158 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-11-07 02:01:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 02:01:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-07 02:01:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:01:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:01:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 02:01:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-07 02:01:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:01:23,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:01:23,160 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 02:01:23,531 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:01:23,531 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-07 02:01:23,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:01:23 BoogieIcfgContainer [2021-11-07 02:01:23,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:01:23,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:01:23,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:01:23,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:01:23,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:01:22" (1/3) ... [2021-11-07 02:01:23,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c566e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:01:23, skipping insertion in model container [2021-11-07 02:01:23,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:22" (2/3) ... [2021-11-07 02:01:23,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c566e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:01:23, skipping insertion in model container [2021-11-07 02:01:23,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:01:23" (3/3) ... [2021-11-07 02:01:23,550 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2021-11-07 02:01:23,556 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 02:01:23,556 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:01:23,556 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 02:01:23,557 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 02:01:23,605 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,607 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,607 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,608 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,608 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,609 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,609 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,609 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,610 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,611 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,611 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,611 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,611 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,612 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,612 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,613 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,613 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,613 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,613 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,614 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,614 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,614 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,615 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,616 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,616 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,616 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,616 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,617 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,622 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,622 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,622 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,622 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,623 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,623 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,623 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,623 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,628 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,629 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,629 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,629 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,631 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,631 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,634 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,634 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,634 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,634 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,635 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,635 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,635 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,635 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,636 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,636 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,636 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,637 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,637 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,637 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,642 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,643 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,643 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,643 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,643 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,643 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,650 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,650 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,651 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,651 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,651 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,651 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:01:23,667 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-07 02:01:23,721 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:01:23,728 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:01:23,729 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 02:01:23,746 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-07 02:01:23,756 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 78 transitions, 172 flow [2021-11-07 02:01:23,759 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 78 transitions, 172 flow [2021-11-07 02:01:23,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 78 transitions, 172 flow [2021-11-07 02:01:23,819 INFO L129 PetriNetUnfolder]: 6/76 cut-off events. [2021-11-07 02:01:23,822 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-07 02:01:23,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 76 events. 6/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2021-11-07 02:01:23,833 INFO L116 LiptonReduction]: Number of co-enabled transitions 1188 [2021-11-07 02:01:26,366 INFO L131 LiptonReduction]: Checked pairs total: 3390 [2021-11-07 02:01:26,366 INFO L133 LiptonReduction]: Total number of compositions: 57 [2021-11-07 02:01:26,374 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 33 transitions, 82 flow [2021-11-07 02:01:26,400 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 230 states, 227 states have (on average 2.590308370044053) internal successors, (588), 229 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:26,403 INFO L276 IsEmpty]: Start isEmpty. Operand has 230 states, 227 states have (on average 2.590308370044053) internal successors, (588), 229 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:26,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 02:01:26,409 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:26,410 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:01:26,410 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-07 02:01:26,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:26,415 INFO L85 PathProgramCache]: Analyzing trace with hash 554923094, now seen corresponding path program 1 times [2021-11-07 02:01:26,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:01:26,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799638098] [2021-11-07 02:01:26,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:26,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:01:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:26,690 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:01:26,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799638098] [2021-11-07 02:01:26,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799638098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:01:26,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:01:26,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 02:01:26,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672664271] [2021-11-07 02:01:26,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:01:26,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:01:26,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:01:26,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:01:26,721 INFO L87 Difference]: Start difference. First operand has 230 states, 227 states have (on average 2.590308370044053) internal successors, (588), 229 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:26,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:01:26,780 INFO L93 Difference]: Finished difference Result 236 states and 542 transitions. [2021-11-07 02:01:26,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:01:26,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 02:01:26,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:01:26,799 INFO L225 Difference]: With dead ends: 236 [2021-11-07 02:01:26,800 INFO L226 Difference]: Without dead ends: 208 [2021-11-07 02:01:26,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:01:26,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-07 02:01:26,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 196. [2021-11-07 02:01:26,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 192 states have (on average 2.375) internal successors, (456), 195 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:26,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 456 transitions. [2021-11-07 02:01:26,875 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 456 transitions. Word has length 8 [2021-11-07 02:01:26,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:01:26,876 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 456 transitions. [2021-11-07 02:01:26,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:26,877 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 456 transitions. [2021-11-07 02:01:26,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 02:01:26,879 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:26,880 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:01:26,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 02:01:26,881 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-07 02:01:26,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:26,882 INFO L85 PathProgramCache]: Analyzing trace with hash 2085363605, now seen corresponding path program 1 times [2021-11-07 02:01:26,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:01:26,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352497385] [2021-11-07 02:01:26,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:26,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:01:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:26,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:26,986 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:01:26,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352497385] [2021-11-07 02:01:26,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352497385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:01:26,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:01:26,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 02:01:26,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797097535] [2021-11-07 02:01:26,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:01:26,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:01:26,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:01:26,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:01:26,989 INFO L87 Difference]: Start difference. First operand 196 states and 456 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:27,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:01:27,019 INFO L93 Difference]: Finished difference Result 186 states and 420 transitions. [2021-11-07 02:01:27,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:01:27,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-07 02:01:27,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:01:27,023 INFO L225 Difference]: With dead ends: 186 [2021-11-07 02:01:27,024 INFO L226 Difference]: Without dead ends: 140 [2021-11-07 02:01:27,024 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:01:27,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-07 02:01:27,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-11-07 02:01:27,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 136 states have (on average 2.323529411764706) internal successors, (316), 139 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:27,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 316 transitions. [2021-11-07 02:01:27,034 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 316 transitions. Word has length 10 [2021-11-07 02:01:27,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:01:27,034 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 316 transitions. [2021-11-07 02:01:27,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:27,034 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 316 transitions. [2021-11-07 02:01:27,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 02:01:27,038 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:27,038 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:01:27,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 02:01:27,038 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-07 02:01:27,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:27,039 INFO L85 PathProgramCache]: Analyzing trace with hash 978497258, now seen corresponding path program 1 times [2021-11-07 02:01:27,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:01:27,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836390755] [2021-11-07 02:01:27,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:27,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:01:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:27,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:01:27,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836390755] [2021-11-07 02:01:27,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836390755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:01:27,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:01:27,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 02:01:27,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382047907] [2021-11-07 02:01:27,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:01:27,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:01:27,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:01:27,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:01:27,198 INFO L87 Difference]: Start difference. First operand 140 states and 316 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:27,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:01:27,321 INFO L93 Difference]: Finished difference Result 210 states and 491 transitions. [2021-11-07 02:01:27,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:01:27,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-07 02:01:27,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:01:27,325 INFO L225 Difference]: With dead ends: 210 [2021-11-07 02:01:27,325 INFO L226 Difference]: Without dead ends: 140 [2021-11-07 02:01:27,326 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:01:27,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-07 02:01:27,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 128. [2021-11-07 02:01:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 124 states have (on average 2.2983870967741935) internal successors, (285), 127 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:27,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 285 transitions. [2021-11-07 02:01:27,348 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 285 transitions. Word has length 15 [2021-11-07 02:01:27,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:01:27,352 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 285 transitions. [2021-11-07 02:01:27,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:27,353 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 285 transitions. [2021-11-07 02:01:27,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 02:01:27,355 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:27,355 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:01:27,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 02:01:27,356 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-07 02:01:27,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:27,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1358916358, now seen corresponding path program 2 times [2021-11-07 02:01:27,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:01:27,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086773428] [2021-11-07 02:01:27,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:27,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:01:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:27,463 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:01:27,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086773428] [2021-11-07 02:01:27,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086773428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:01:27,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:01:27,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 02:01:27,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487699821] [2021-11-07 02:01:27,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:01:27,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:01:27,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:01:27,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:01:27,467 INFO L87 Difference]: Start difference. First operand 128 states and 285 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:27,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:01:27,519 INFO L93 Difference]: Finished difference Result 90 states and 214 transitions. [2021-11-07 02:01:27,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:01:27,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-07 02:01:27,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:01:27,519 INFO L225 Difference]: With dead ends: 90 [2021-11-07 02:01:27,520 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 02:01:27,520 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:01:27,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 02:01:27,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 02:01:27,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:27,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 02:01:27,521 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-11-07 02:01:27,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:01:27,521 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 02:01:27,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:27,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 02:01:27,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 02:01:27,524 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:01:27,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:01:27,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-07 02:01:27,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-07 02:01:27,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:01:27,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:01:27,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 02:01:27,528 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-11-07 02:01:27,532 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-07 02:01:27,532 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:01:27,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:01:27 BasicIcfg [2021-11-07 02:01:27,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:01:27,536 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:01:27,536 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:01:27,536 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:01:27,537 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:01:23" (3/4) ... [2021-11-07 02:01:27,540 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 02:01:27,546 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2021-11-07 02:01:27,546 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2021-11-07 02:01:27,551 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-07 02:01:27,551 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-07 02:01:27,551 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 02:01:27,552 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 02:01:27,588 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e3ccc8-82cc-4b67-a664-3afcb7893baa/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 02:01:27,588 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:01:27,592 INFO L168 Benchmark]: Toolchain (without parser) took 5265.26 ms. Allocated memory was 121.6 MB in the beginning and 163.6 MB in the end (delta: 41.9 MB). Free memory was 83.5 MB in the beginning and 89.2 MB in the end (delta: -5.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:01:27,592 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 121.6 MB. Free memory was 101.9 MB in the beginning and 101.8 MB in the end (delta: 71.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:01:27,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 634.76 ms. Allocated memory is still 121.6 MB. Free memory was 83.3 MB in the beginning and 88.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:01:27,593 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.51 ms. Allocated memory is still 121.6 MB. Free memory was 88.2 MB in the beginning and 86.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:01:27,595 INFO L168 Benchmark]: Boogie Preprocessor took 41.32 ms. Allocated memory is still 121.6 MB. Free memory was 86.5 MB in the beginning and 85.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:01:27,595 INFO L168 Benchmark]: RCFGBuilder took 463.45 ms. Allocated memory is still 121.6 MB. Free memory was 84.7 MB in the beginning and 72.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:01:27,596 INFO L168 Benchmark]: TraceAbstraction took 3997.33 ms. Allocated memory was 121.6 MB in the beginning and 163.6 MB in the end (delta: 41.9 MB). Free memory was 72.1 MB in the beginning and 92.3 MB in the end (delta: -20.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. [2021-11-07 02:01:27,598 INFO L168 Benchmark]: Witness Printer took 52.69 ms. Allocated memory is still 163.6 MB. Free memory was 92.3 MB in the beginning and 89.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:01:27,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 121.6 MB. Free memory was 101.9 MB in the beginning and 101.8 MB in the end (delta: 71.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 634.76 ms. Allocated memory is still 121.6 MB. Free memory was 83.3 MB in the beginning and 88.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.51 ms. Allocated memory is still 121.6 MB. Free memory was 88.2 MB in the beginning and 86.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.32 ms. Allocated memory is still 121.6 MB. Free memory was 86.5 MB in the beginning and 85.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 463.45 ms. Allocated memory is still 121.6 MB. Free memory was 84.7 MB in the beginning and 72.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3997.33 ms. Allocated memory was 121.6 MB in the beginning and 163.6 MB in the end (delta: 41.9 MB). Free memory was 72.1 MB in the beginning and 92.3 MB in the end (delta: -20.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. * Witness Printer took 52.69 ms. Allocated memory is still 163.6 MB. Free memory was 92.3 MB in the beginning and 89.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 79 PlacesBefore, 36 PlacesAfterwards, 78 TransitionsBefore, 33 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 5 FixpointIterations, 24 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 57 TotalNumberOfCompositions, 3390 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1767, positive: 1621, positive conditional: 0, positive unconditional: 1621, negative: 146, negative conditional: 0, negative unconditional: 146, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 919, positive: 879, positive conditional: 0, positive unconditional: 879, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 919, positive: 867, positive conditional: 0, positive unconditional: 867, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 52, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 88, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1767, positive: 742, positive conditional: 0, positive unconditional: 742, negative: 106, negative conditional: 0, negative unconditional: 106, unknown: 919, unknown conditional: 0, unknown unconditional: 919] , Statistics on independence cache: Total cache size (in pairs): 170, Positive cache size: 147, Positive conditional cache size: 0, Positive unconditional cache size: 147, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 753]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 725]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 107 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 142 SDtfs, 107 SDslu, 174 SDs, 0 SdLazy, 119 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=0, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-07 02:01:27,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e3ccc8-82cc-4b67-a664-3afcb7893baa/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE