./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6412b0-30ac-4851-bd96-1a7722a1fac3/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6412b0-30ac-4851-bd96-1a7722a1fac3/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6412b0-30ac-4851-bd96-1a7722a1fac3/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6412b0-30ac-4851-bd96-1a7722a1fac3/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6412b0-30ac-4851-bd96-1a7722a1fac3/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6412b0-30ac-4851-bd96-1a7722a1fac3/bin/uautomizer-uyxdKDjOR8 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 64fd5c9a7c03c96af66cf5f857887398d304caaa83220f1caa01f4ec8c71700a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 14:17:56,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:17:56,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:17:56,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:17:56,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:17:56,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:17:56,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:17:56,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:17:56,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:17:56,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:17:56,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:17:56,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:17:56,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:17:56,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:17:56,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:17:56,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:17:56,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:17:56,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:17:56,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:17:56,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:17:56,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:17:56,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:17:56,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:17:56,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:17:56,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:17:56,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:17:56,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:17:56,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:17:56,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:17:56,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:17:56,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:17:56,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:17:56,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:17:56,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:17:56,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:17:56,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:17:56,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:17:56,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:17:56,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:17:56,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:17:56,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:17:56,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6412b0-30ac-4851-bd96-1a7722a1fac3/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 14:17:56,509 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:17:56,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:17:56,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:17:56,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:17:56,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:17:56,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:17:56,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:17:56,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:17:56,511 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:17:56,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:17:56,511 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:17:56,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:17:56,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:17:56,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:17:56,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:17:56,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:17:56,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:17:56,511 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:17:56,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:17:56,512 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:17:56,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:17:56,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:17:56,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:17:56,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:17:56,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:17:56,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:17:56,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:17:56,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:17:56,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:17:56,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:17:56,513 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:17:56,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:17:56,513 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:17:56,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:17:56,513 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:17:56,513 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_5c6412b0-30ac-4851-bd96-1a7722a1fac3/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6412b0-30ac-4851-bd96-1a7722a1fac3/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64fd5c9a7c03c96af66cf5f857887398d304caaa83220f1caa01f4ec8c71700a [2022-12-13 14:17:56,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:17:56,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:17:56,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:17:56,695 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:17:56,695 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:17:56,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6412b0-30ac-4851-bd96-1a7722a1fac3/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c [2022-12-13 14:17:59,302 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:17:59,456 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:17:59,456 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6412b0-30ac-4851-bd96-1a7722a1fac3/sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c [2022-12-13 14:17:59,462 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6412b0-30ac-4851-bd96-1a7722a1fac3/bin/uautomizer-uyxdKDjOR8/data/5fa17675e/dc1c96d4974e4be98f3e7f641b155941/FLAGa7e82673e [2022-12-13 14:17:59,473 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6412b0-30ac-4851-bd96-1a7722a1fac3/bin/uautomizer-uyxdKDjOR8/data/5fa17675e/dc1c96d4974e4be98f3e7f641b155941 [2022-12-13 14:17:59,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:17:59,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:17:59,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:17:59,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:17:59,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:17:59,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:17:59" (1/1) ... [2022-12-13 14:17:59,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1134beb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:17:59, skipping insertion in model container [2022-12-13 14:17:59,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:17:59" (1/1) ... [2022-12-13 14:17:59,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:17:59,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:17:59,619 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:17:59,622 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:17:59,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:17:59,626 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:17:59,636 WARN L237 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_5c6412b0-30ac-4851-bd96-1a7722a1fac3/sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c[2986,2999] [2022-12-13 14:17:59,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:17:59,653 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:17:59,664 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:17:59,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:17:59,667 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:17:59,669 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:17:59,675 WARN L237 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_5c6412b0-30ac-4851-bd96-1a7722a1fac3/sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c[2986,2999] [2022-12-13 14:17:59,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:17:59,689 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:17:59,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:17:59 WrapperNode [2022-12-13 14:17:59,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:17:59,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:17:59,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:17:59,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:17:59,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:17:59" (1/1) ... [2022-12-13 14:17:59,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:17:59" (1/1) ... [2022-12-13 14:17:59,732 INFO L138 Inliner]: procedures = 22, calls = 35, calls flagged for inlining = 15, calls inlined = 29, statements flattened = 252 [2022-12-13 14:17:59,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:17:59,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:17:59,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:17:59,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:17:59,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:17:59" (1/1) ... [2022-12-13 14:17:59,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:17:59" (1/1) ... [2022-12-13 14:17:59,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:17:59" (1/1) ... [2022-12-13 14:17:59,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:17:59" (1/1) ... [2022-12-13 14:17:59,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:17:59" (1/1) ... [2022-12-13 14:17:59,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:17:59" (1/1) ... [2022-12-13 14:17:59,755 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:17:59" (1/1) ... [2022-12-13 14:17:59,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:17:59" (1/1) ... [2022-12-13 14:17:59,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:17:59,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:17:59,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:17:59,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:17:59,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:17:59" (1/1) ... [2022-12-13 14:17:59,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:17:59,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6412b0-30ac-4851-bd96-1a7722a1fac3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:17:59,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6412b0-30ac-4851-bd96-1a7722a1fac3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:17:59,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6412b0-30ac-4851-bd96-1a7722a1fac3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:17:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:17:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 14:17:59,819 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 14:17:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 14:17:59,819 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 14:17:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:17:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:17:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:17:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 14:17:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 14:17:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:17:59,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:17:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 14:17:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:17:59,821 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 14:17:59,901 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:17:59,903 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:18:00,228 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:18:00,554 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:18:00,554 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 14:18:00,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:18:00 BoogieIcfgContainer [2022-12-13 14:18:00,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:18:00,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:18:00,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:18:00,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:18:00,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:17:59" (1/3) ... [2022-12-13 14:18:00,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d303cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:18:00, skipping insertion in model container [2022-12-13 14:18:00,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:17:59" (2/3) ... [2022-12-13 14:18:00,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d303cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:18:00, skipping insertion in model container [2022-12-13 14:18:00,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:18:00" (3/3) ... [2022-12-13 14:18:00,565 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-symm.wvr.c [2022-12-13 14:18:00,573 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 14:18:00,581 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:18:00,581 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 14:18:00,581 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 14:18:00,638 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 14:18:00,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 114 transitions, 244 flow [2022-12-13 14:18:00,723 INFO L130 PetriNetUnfolder]: 3/112 cut-off events. [2022-12-13 14:18:00,723 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 14:18:00,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 112 events. 3/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 18 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2022-12-13 14:18:00,727 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 114 transitions, 244 flow [2022-12-13 14:18:00,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 103 transitions, 218 flow [2022-12-13 14:18:00,734 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:18:00,743 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 103 transitions, 218 flow [2022-12-13 14:18:00,745 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 103 transitions, 218 flow [2022-12-13 14:18:00,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 103 transitions, 218 flow [2022-12-13 14:18:00,763 INFO L130 PetriNetUnfolder]: 3/103 cut-off events. [2022-12-13 14:18:00,763 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 14:18:00,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 103 events. 3/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 17 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2022-12-13 14:18:00,764 INFO L119 LiptonReduction]: Number of co-enabled transitions 108 [2022-12-13 14:18:07,297 INFO L134 LiptonReduction]: Checked pairs total: 177 [2022-12-13 14:18:07,297 INFO L136 LiptonReduction]: Total number of compositions: 105 [2022-12-13 14:18:07,308 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:18:07,312 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@74c1a4bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:18:07,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 14:18:07,316 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2022-12-13 14:18:07,317 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 14:18:07,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:18:07,317 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:18:07,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 14:18:07,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:18:07,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1629345768, now seen corresponding path program 1 times [2022-12-13 14:18:07,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:18:07,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233348039] [2022-12-13 14:18:07,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:18:07,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:18:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:18:08,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:18:08,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:18:08,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233348039] [2022-12-13 14:18:08,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233348039] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:18:08,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:18:08,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:18:08,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445385077] [2022-12-13 14:18:08,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:18:08,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:18:08,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:18:08,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:18:08,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:18:09,078 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 219 [2022-12-13 14:18:09,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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) [2022-12-13 14:18:09,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:18:09,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 219 [2022-12-13 14:18:09,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:18:09,218 INFO L130 PetriNetUnfolder]: 8/32 cut-off events. [2022-12-13 14:18:09,218 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 14:18:09,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 32 events. 8/32 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 1 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 45. Up to 16 conditions per place. [2022-12-13 14:18:09,219 INFO L137 encePairwiseOnDemand]: 216/219 looper letters, 11 selfloop transitions, 1 changer transitions 7/19 dead transitions. [2022-12-13 14:18:09,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 97 flow [2022-12-13 14:18:09,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:18:09,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:18:09,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 356 transitions. [2022-12-13 14:18:09,233 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4063926940639269 [2022-12-13 14:18:09,234 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 356 transitions. [2022-12-13 14:18:09,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 356 transitions. [2022-12-13 14:18:09,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:18:09,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 356 transitions. [2022-12-13 14:18:09,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2022-12-13 14:18:09,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 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) [2022-12-13 14:18:09,247 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 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) [2022-12-13 14:18:09,248 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 34 flow. Second operand 4 states and 356 transitions. [2022-12-13 14:18:09,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 97 flow [2022-12-13 14:18:09,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 19 transitions, 83 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 14:18:09,253 INFO L231 Difference]: Finished difference. Result has 19 places, 11 transitions, 33 flow [2022-12-13 14:18:09,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=33, PETRI_PLACES=19, PETRI_TRANSITIONS=11} [2022-12-13 14:18:09,258 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2022-12-13 14:18:09,258 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 33 flow [2022-12-13 14:18:09,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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) [2022-12-13 14:18:09,258 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:18:09,258 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:18:09,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:18:09,259 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 14:18:09,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:18:09,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1125850864, now seen corresponding path program 2 times [2022-12-13 14:18:09,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:18:09,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261097321] [2022-12-13 14:18:09,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:18:09,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:18:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:18:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:18:10,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:18:10,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261097321] [2022-12-13 14:18:10,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261097321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:18:10,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:18:10,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:18:10,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696165827] [2022-12-13 14:18:10,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:18:10,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:18:10,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:18:10,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:18:10,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:18:10,457 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 219 [2022-12-13 14:18:10,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 33 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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) [2022-12-13 14:18:10,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:18:10,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 219 [2022-12-13 14:18:10,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:18:10,585 INFO L130 PetriNetUnfolder]: 5/23 cut-off events. [2022-12-13 14:18:10,585 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-12-13 14:18:10,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 23 events. 5/23 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 3 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 57. Up to 15 conditions per place. [2022-12-13 14:18:10,585 INFO L137 encePairwiseOnDemand]: 216/219 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2022-12-13 14:18:10,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 15 transitions, 73 flow [2022-12-13 14:18:10,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:18:10,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:18:10,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2022-12-13 14:18:10,589 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4018264840182648 [2022-12-13 14:18:10,589 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2022-12-13 14:18:10,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2022-12-13 14:18:10,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:18:10,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2022-12-13 14:18:10,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 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) [2022-12-13 14:18:10,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 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) [2022-12-13 14:18:10,592 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 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) [2022-12-13 14:18:10,592 INFO L175 Difference]: Start difference. First operand has 19 places, 11 transitions, 33 flow. Second operand 4 states and 352 transitions. [2022-12-13 14:18:10,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 15 transitions, 73 flow [2022-12-13 14:18:10,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 71 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:18:10,592 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2022-12-13 14:18:10,592 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2022-12-13 14:18:10,593 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2022-12-13 14:18:10,593 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2022-12-13 14:18:10,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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) [2022-12-13 14:18:10,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-13 14:18:10,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-13 14:18:10,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-13 14:18:10,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:18:10,596 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2022-12-13 14:18:10,598 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 14:18:10,598 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 14:18:10,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 02:18:10 BasicIcfg [2022-12-13 14:18:10,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 14:18:10,601 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:18:10,601 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:18:10,601 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:18:10,602 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:18:00" (3/4) ... [2022-12-13 14:18:10,604 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 14:18:10,608 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 14:18:10,608 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 14:18:10,611 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-12-13 14:18:10,611 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 14:18:10,611 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 14:18:10,611 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 14:18:10,639 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6412b0-30ac-4851-bd96-1a7722a1fac3/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 14:18:10,639 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:18:10,639 INFO L158 Benchmark]: Toolchain (without parser) took 11163.44ms. Allocated memory was 115.3MB in the beginning and 201.3MB in the end (delta: 86.0MB). Free memory was 85.9MB in the beginning and 89.5MB in the end (delta: -3.6MB). Peak memory consumption was 83.9MB. Max. memory is 16.1GB. [2022-12-13 14:18:10,640 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 115.3MB. Free memory was 88.5MB in the beginning and 88.5MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:18:10,640 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.30ms. Allocated memory is still 115.3MB. Free memory was 85.5MB in the beginning and 74.0MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 14:18:10,640 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.56ms. Allocated memory is still 115.3MB. Free memory was 73.5MB in the beginning and 71.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:18:10,640 INFO L158 Benchmark]: Boogie Preprocessor took 27.54ms. Allocated memory is still 115.3MB. Free memory was 71.4MB in the beginning and 69.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:18:10,641 INFO L158 Benchmark]: RCFGBuilder took 795.24ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 69.3MB in the beginning and 94.1MB in the end (delta: -24.8MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. [2022-12-13 14:18:10,641 INFO L158 Benchmark]: TraceAbstraction took 10042.41ms. Allocated memory was 138.4MB in the beginning and 201.3MB in the end (delta: 62.9MB). Free memory was 93.0MB in the beginning and 92.7MB in the end (delta: 337.8kB). Peak memory consumption was 64.3MB. Max. memory is 16.1GB. [2022-12-13 14:18:10,641 INFO L158 Benchmark]: Witness Printer took 37.65ms. Allocated memory is still 201.3MB. Free memory was 92.7MB in the beginning and 89.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:18:10,644 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 115.3MB. Free memory was 88.5MB in the beginning and 88.5MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.30ms. Allocated memory is still 115.3MB. Free memory was 85.5MB in the beginning and 74.0MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.56ms. Allocated memory is still 115.3MB. Free memory was 73.5MB in the beginning and 71.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.54ms. Allocated memory is still 115.3MB. Free memory was 71.4MB in the beginning and 69.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 795.24ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 69.3MB in the beginning and 94.1MB in the end (delta: -24.8MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. * TraceAbstraction took 10042.41ms. Allocated memory was 138.4MB in the beginning and 201.3MB in the end (delta: 62.9MB). Free memory was 93.0MB in the beginning and 92.7MB in the end (delta: 337.8kB). Peak memory consumption was 64.3MB. Max. memory is 16.1GB. * Witness Printer took 37.65ms. Allocated memory is still 201.3MB. Free memory was 92.7MB in the beginning and 89.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.6s, 107 PlacesBefore, 18 PlacesAfterwards, 103 TransitionsBefore, 11 TransitionsAfterwards, 108 CoEnabledTransitionPairs, 7 FixpointIterations, 80 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 105 TotalNumberOfCompositions, 177 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 177, independent: 177, independent conditional: 0, independent unconditional: 177, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 66, independent: 66, independent conditional: 0, independent unconditional: 66, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 177, independent: 111, independent conditional: 0, independent unconditional: 111, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 66, unknown conditional: 0, unknown unconditional: 66] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 87]: 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, 122 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 91 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 176 IncrementalHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 176 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 952 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 14:18:10,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c6412b0-30ac-4851-bd96-1a7722a1fac3/bin/uautomizer-uyxdKDjOR8/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