./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e064514c886eab27bff1253cfa87b1ac324d3dc8890599c3d4384e987c0d244 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:50:28,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:50:28,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:50:28,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:50:28,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:50:28,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:50:28,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:50:28,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:50:28,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:50:28,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:50:28,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:50:28,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:50:28,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:50:28,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:50:28,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:50:28,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:50:28,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:50:28,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:50:28,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:50:28,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:50:28,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:50:28,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:50:28,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:50:28,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:50:28,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:50:28,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:50:28,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:50:28,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:50:28,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:50:28,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:50:28,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:50:28,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:50:28,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:50:28,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:50:28,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:50:28,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:50:28,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:50:28,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:50:28,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:50:28,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:50:28,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:50:28,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:50:28,443 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:50:28,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:50:28,445 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:50:28,445 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:50:28,446 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:50:28,446 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:50:28,446 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:50:28,447 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:50:28,447 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:50:28,447 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:50:28,448 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:50:28,449 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:50:28,449 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:50:28,449 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:50:28,449 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:50:28,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:50:28,451 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:50:28,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:50:28,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:50:28,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:50:28,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:50:28,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:50:28,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:50:28,452 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:50:28,453 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:50:28,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:50:28,453 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:50:28,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:50:28,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:50:28,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:50:28,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:50:28,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:50:28,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:50:28,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:50:28,457 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:50:28,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:50:28,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:50:28,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:50:28,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:50:28,458 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_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e064514c886eab27bff1253cfa87b1ac324d3dc8890599c3d4384e987c0d244 [2021-11-03 03:50:28,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:50:28,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:50:28,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:50:28,787 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:50:28,788 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:50:28,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c [2021-11-03 03:50:28,876 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/bin/utaipan-aC7eJsxGYH/data/9f6d9bffb/5a946039743a45ce8af9cdcc7510ff37/FLAG4c2434a81 [2021-11-03 03:50:29,404 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:50:29,405 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c [2021-11-03 03:50:29,417 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/bin/utaipan-aC7eJsxGYH/data/9f6d9bffb/5a946039743a45ce8af9cdcc7510ff37/FLAG4c2434a81 [2021-11-03 03:50:29,742 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/bin/utaipan-aC7eJsxGYH/data/9f6d9bffb/5a946039743a45ce8af9cdcc7510ff37 [2021-11-03 03:50:29,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:50:29,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:50:29,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:50:29,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:50:29,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:50:29,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:29" (1/1) ... [2021-11-03 03:50:29,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2484ba00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:29, skipping insertion in model container [2021-11-03 03:50:29,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:29" (1/1) ... [2021-11-03 03:50:29,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:50:29,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:50:30,002 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_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2021-11-03 03:50:30,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:50:30,017 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:50:30,050 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_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2021-11-03 03:50:30,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:50:30,086 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:50:30,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:30 WrapperNode [2021-11-03 03:50:30,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:50:30,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:50:30,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:50:30,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:50:30,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:30" (1/1) ... [2021-11-03 03:50:30,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:30" (1/1) ... [2021-11-03 03:50:30,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:50:30,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:50:30,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:50:30,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:50:30,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:30" (1/1) ... [2021-11-03 03:50:30,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:30" (1/1) ... [2021-11-03 03:50:30,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:30" (1/1) ... [2021-11-03 03:50:30,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:30" (1/1) ... [2021-11-03 03:50:30,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:30" (1/1) ... [2021-11-03 03:50:30,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:30" (1/1) ... [2021-11-03 03:50:30,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:30" (1/1) ... [2021-11-03 03:50:30,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:50:30,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:50:30,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:50:30,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:50:30,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:30" (1/1) ... [2021-11-03 03:50:30,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:50:30,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:50:30,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:50:30,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:50:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-03 03:50:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-03 03:50:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-03 03:50:30,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-03 03:50:30,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-03 03:50:30,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-03 03:50:30,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:50:30,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:50:30,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 03:50:30,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-03 03:50:30,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-03 03:50:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:50:30,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:50:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 03:50:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:50:30,341 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-03 03:50:30,767 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:50:30,767 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-03 03:50:30,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:50:30 BoogieIcfgContainer [2021-11-03 03:50:30,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:50:30,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:50:30,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:50:30,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:50:30,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:50:29" (1/3) ... [2021-11-03 03:50:30,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8f795f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:50:30, skipping insertion in model container [2021-11-03 03:50:30,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:30" (2/3) ... [2021-11-03 03:50:30,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8f795f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:50:30, skipping insertion in model container [2021-11-03 03:50:30,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:50:30" (3/3) ... [2021-11-03 03:50:30,781 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2021-11-03 03:50:30,787 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-03 03:50:30,788 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:50:30,788 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:50:30,788 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-03 03:50:30,848 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,848 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,849 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,849 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,850 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,850 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,851 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,851 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,852 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,865 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,866 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,866 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,867 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,868 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,868 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,868 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,872 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,872 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,873 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,876 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,876 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,876 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,879 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,880 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-03 03:50:30,909 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-03 03:50:30,964 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:50:30,972 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:50:30,973 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-03 03:50:30,997 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-03 03:50:31,011 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 86 transitions, 196 flow [2021-11-03 03:50:31,015 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 86 transitions, 196 flow [2021-11-03 03:50:31,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 196 flow [2021-11-03 03:50:31,095 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-11-03 03:50:31,096 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-03 03:50:31,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 2/83 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 25 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2021-11-03 03:50:31,103 INFO L116 LiptonReduction]: Number of co-enabled transitions 360 [2021-11-03 03:50:35,614 INFO L131 LiptonReduction]: Checked pairs total: 533 [2021-11-03 03:50:35,614 INFO L133 LiptonReduction]: Total number of compositions: 73 [2021-11-03 03:50:35,623 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 64 flow [2021-11-03 03:50:35,644 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:35,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:35,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 03:50:35,654 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:35,655 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:50:35,655 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-03 03:50:35,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:35,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1626200623, now seen corresponding path program 1 times [2021-11-03 03:50:35,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:50:35,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314462499] [2021-11-03 03:50:35,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:35,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:50:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:36,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:36,433 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:50:36,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314462499] [2021-11-03 03:50:36,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314462499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:50:36,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:50:36,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 03:50:36,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523026513] [2021-11-03 03:50:36,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:50:36,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:50:36,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:50:36,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:50:36,467 INFO L87 Difference]: Start difference. First operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:36,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:36,608 INFO L93 Difference]: Finished difference Result 57 states and 96 transitions. [2021-11-03 03:50:36,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:50:36,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-11-03 03:50:36,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:36,623 INFO L225 Difference]: With dead ends: 57 [2021-11-03 03:50:36,623 INFO L226 Difference]: Without dead ends: 42 [2021-11-03 03:50:36,627 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:50:36,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-03 03:50:36,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-11-03 03:50:36,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 41 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:36,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 73 transitions. [2021-11-03 03:50:36,681 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 73 transitions. Word has length 16 [2021-11-03 03:50:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:36,683 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 73 transitions. [2021-11-03 03:50:36,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:36,689 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 73 transitions. [2021-11-03 03:50:36,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 03:50:36,692 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:36,692 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:50:36,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:50:36,695 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-03 03:50:36,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:36,697 INFO L85 PathProgramCache]: Analyzing trace with hash 517344361, now seen corresponding path program 2 times [2021-11-03 03:50:36,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:50:36,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315904376] [2021-11-03 03:50:36,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:36,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:50:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:37,139 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:50:37,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315904376] [2021-11-03 03:50:37,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315904376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:50:37,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:50:37,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 03:50:37,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268824150] [2021-11-03 03:50:37,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:50:37,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:50:37,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:50:37,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:50:37,146 INFO L87 Difference]: Start difference. First operand 42 states and 73 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:37,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:37,282 INFO L93 Difference]: Finished difference Result 49 states and 79 transitions. [2021-11-03 03:50:37,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:50:37,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-11-03 03:50:37,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:37,284 INFO L225 Difference]: With dead ends: 49 [2021-11-03 03:50:37,284 INFO L226 Difference]: Without dead ends: 36 [2021-11-03 03:50:37,285 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:50:37,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-03 03:50:37,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-03 03:50:37,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:37,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2021-11-03 03:50:37,296 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 57 transitions. Word has length 16 [2021-11-03 03:50:37,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:37,297 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-11-03 03:50:37,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:37,297 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 57 transitions. [2021-11-03 03:50:37,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 03:50:37,300 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:37,300 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:50:37,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 03:50:37,301 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-03 03:50:37,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:37,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1835036293, now seen corresponding path program 3 times [2021-11-03 03:50:37,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:50:37,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991613519] [2021-11-03 03:50:37,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:37,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:50:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:37,680 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:50:37,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991613519] [2021-11-03 03:50:37,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991613519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:50:37,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:50:37,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 03:50:37,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969564826] [2021-11-03 03:50:37,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 03:50:37,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:50:37,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 03:50:37,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:50:37,689 INFO L87 Difference]: Start difference. First operand 36 states and 57 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:37,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:37,767 INFO L93 Difference]: Finished difference Result 35 states and 56 transitions. [2021-11-03 03:50:37,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:50:37,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-11-03 03:50:37,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:37,769 INFO L225 Difference]: With dead ends: 35 [2021-11-03 03:50:37,769 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 03:50:37,770 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:50:37,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 03:50:37,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 03:50:37,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:37,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 03:50:37,771 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-11-03 03:50:37,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:37,771 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 03:50:37,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:37,771 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 03:50:37,771 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 03:50:37,774 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:50:37,774 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-03 03:50:37,774 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-03 03:50:37,775 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-11-03 03:50:37,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 03:50:37,780 INFO L731 BasicCegarLoop]: Path program histogram: [3] [2021-11-03 03:50:37,783 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-03 03:50:37,783 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 03:50:37,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:50:37 BasicIcfg [2021-11-03 03:50:37,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 03:50:37,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 03:50:37,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 03:50:37,787 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 03:50:37,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:50:30" (3/4) ... [2021-11-03 03:50:37,791 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 03:50:37,798 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-11-03 03:50:37,798 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-11-03 03:50:37,799 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-11-03 03:50:37,807 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-03 03:50:37,807 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-03 03:50:37,807 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 03:50:37,808 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 03:50:37,871 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 03:50:37,872 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 03:50:37,873 INFO L168 Benchmark]: Toolchain (without parser) took 8122.37 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 62.0 MB in the beginning and 60.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2021-11-03 03:50:37,877 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 61.2 MB in the beginning and 61.1 MB in the end (delta: 63.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:50:37,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.96 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 62.0 MB in the beginning and 80.1 MB in the end (delta: -18.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:50:37,879 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.02 ms. Allocated memory is still 104.9 MB. Free memory was 79.8 MB in the beginning and 78.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:50:37,879 INFO L168 Benchmark]: Boogie Preprocessor took 60.06 ms. Allocated memory is still 104.9 MB. Free memory was 78.4 MB in the beginning and 77.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:50:37,880 INFO L168 Benchmark]: RCFGBuilder took 543.76 ms. Allocated memory is still 104.9 MB. Free memory was 77.2 MB in the beginning and 64.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 03:50:37,880 INFO L168 Benchmark]: TraceAbstraction took 7013.34 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 64.1 MB in the beginning and 63.2 MB in the end (delta: 926.0 kB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. [2021-11-03 03:50:37,881 INFO L168 Benchmark]: Witness Printer took 84.83 ms. Allocated memory is still 125.8 MB. Free memory was 63.2 MB in the beginning and 60.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-03 03:50:37,883 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 61.2 MB in the beginning and 61.1 MB in the end (delta: 63.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.96 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 62.0 MB in the beginning and 80.1 MB in the end (delta: -18.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.02 ms. Allocated memory is still 104.9 MB. Free memory was 79.8 MB in the beginning and 78.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.06 ms. Allocated memory is still 104.9 MB. Free memory was 78.4 MB in the beginning and 77.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 543.76 ms. Allocated memory is still 104.9 MB. Free memory was 77.2 MB in the beginning and 64.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7013.34 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 64.1 MB in the beginning and 63.2 MB in the end (delta: 926.0 kB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. * Witness Printer took 84.83 ms. Allocated memory is still 125.8 MB. Free memory was 63.2 MB in the beginning and 60.0 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: 4.5s, 94 PlacesBefore, 30 PlacesAfterwards, 86 TransitionsBefore, 20 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 7 FixpointIterations, 48 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 533 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 533, positive: 533, positive conditional: 0, positive unconditional: 533, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 287, positive: 287, positive conditional: 0, positive unconditional: 287, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 287, positive: 284, positive conditional: 0, positive unconditional: 284, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 14, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 533, positive: 246, positive conditional: 0, positive unconditional: 246, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 287, unknown conditional: 0, unknown unconditional: 287] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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: 82]: 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 7 procedures, 103 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 6.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 62 SDslu, 206 SDs, 0 SdLazy, 141 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 16, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1048 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2021-11-03 03:50:37,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38cd6f0b-dc0b-4373-85f8-e9fbaee72d7a/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE