./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i --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_facbd1e5-859a-4ad6-89ed-d628331bc6bd/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facbd1e5-859a-4ad6-89ed-d628331bc6bd/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_facbd1e5-859a-4ad6-89ed-d628331bc6bd/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facbd1e5-859a-4ad6-89ed-d628331bc6bd/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facbd1e5-859a-4ad6-89ed-d628331bc6bd/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_facbd1e5-859a-4ad6-89ed-d628331bc6bd/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 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --- 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 14:30:13,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:30:13,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:30:13,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:30:13,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:30:13,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:30:13,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:30:13,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:30:13,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:30:13,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:30:13,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:30:13,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:30:13,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:30:13,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:30:13,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:30:13,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:30:13,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:30:13,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:30:13,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:30:13,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:30:13,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:30:13,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:30:13,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:30:13,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:30:13,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:30:13,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:30:13,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:30:13,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:30:13,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:30:13,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:30:13,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:30:13,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:30:13,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:30:13,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:30:13,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:30:13,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:30:13,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:30:13,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:30:13,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:30:13,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:30:13,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:30:13,840 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facbd1e5-859a-4ad6-89ed-d628331bc6bd/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 14:30:13,861 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:30:13,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:30:13,862 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:30:13,862 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:30:13,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:30:13,863 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:30:13,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:30:13,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:30:13,864 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:30:13,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:30:13,864 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:30:13,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:30:13,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:30:13,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:30:13,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:30:13,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:30:13,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:30:13,865 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:30:13,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:30:13,866 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:30:13,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:30:13,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:30:13,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:30:13,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:30:13,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:30:13,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:30:13,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:30:13,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:30:13,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:30:13,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:30:13,868 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:30:13,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:30:13,868 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:30:13,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:30:13,869 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:30:13,869 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_facbd1e5-859a-4ad6-89ed-d628331bc6bd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facbd1e5-859a-4ad6-89ed-d628331bc6bd/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 [2022-12-13 14:30:14,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:30:14,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:30:14,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:30:14,085 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:30:14,085 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:30:14,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facbd1e5-859a-4ad6-89ed-d628331bc6bd/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2022-12-13 14:30:16,624 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:30:16,857 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:30:16,857 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facbd1e5-859a-4ad6-89ed-d628331bc6bd/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2022-12-13 14:30:16,874 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facbd1e5-859a-4ad6-89ed-d628331bc6bd/bin/uautomizer-uyxdKDjOR8/data/f34cfc5fa/fe25e5f7ff4c4d07b10b5d99a6cfbe6d/FLAGccffb117d [2022-12-13 14:30:17,217 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facbd1e5-859a-4ad6-89ed-d628331bc6bd/bin/uautomizer-uyxdKDjOR8/data/f34cfc5fa/fe25e5f7ff4c4d07b10b5d99a6cfbe6d [2022-12-13 14:30:17,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:30:17,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:30:17,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:30:17,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:30:17,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:30:17,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:30:17" (1/1) ... [2022-12-13 14:30:17,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a96359e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:30:17, skipping insertion in model container [2022-12-13 14:30:17,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:30:17" (1/1) ... [2022-12-13 14:30:17,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:30:17,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:30:17,428 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 14:30:17,596 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_facbd1e5-859a-4ad6-89ed-d628331bc6bd/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i[55568,55581] [2022-12-13 14:30:17,602 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:30:17,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:30:17,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:30:17,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:30:17,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:30:17,624 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:30:17,637 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 14:30:17,659 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_facbd1e5-859a-4ad6-89ed-d628331bc6bd/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i[55568,55581] [2022-12-13 14:30:17,660 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:30:17,661 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:30:17,661 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:30:17,662 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:30:17,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:30:17,712 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:30:17,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:30:17 WrapperNode [2022-12-13 14:30:17,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:30:17,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:30:17,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:30:17,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:30:17,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:30:17" (1/1) ... [2022-12-13 14:30:17,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:30:17" (1/1) ... [2022-12-13 14:30:17,753 INFO L138 Inliner]: procedures = 325, calls = 53, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2022-12-13 14:30:17,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:30:17,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:30:17,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:30:17,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:30:17,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:30:17" (1/1) ... [2022-12-13 14:30:17,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:30:17" (1/1) ... [2022-12-13 14:30:17,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:30:17" (1/1) ... [2022-12-13 14:30:17,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:30:17" (1/1) ... [2022-12-13 14:30:17,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:30:17" (1/1) ... [2022-12-13 14:30:17,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:30:17" (1/1) ... [2022-12-13 14:30:17,776 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:30:17" (1/1) ... [2022-12-13 14:30:17,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:30:17" (1/1) ... [2022-12-13 14:30:17,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:30:17,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:30:17,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:30:17,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:30:17,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:30:17" (1/1) ... [2022-12-13 14:30:17,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:30:17,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facbd1e5-859a-4ad6-89ed-d628331bc6bd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:30:17,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facbd1e5-859a-4ad6-89ed-d628331bc6bd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:30:17,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facbd1e5-859a-4ad6-89ed-d628331bc6bd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:30:17,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 14:30:17,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:30:17,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:30:17,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 14:30:17,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 14:30:17,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-12-13 14:30:17,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-12-13 14:30:17,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 14:30:17,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 14:30:17,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 14:30:17,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 14:30:17,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 14:30:17,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 14:30:17,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:30:17,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 14:30:17,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:30:17,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:30:17,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:30:17,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:30:17,845 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 14:30:17,954 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:30:17,955 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:30:18,121 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:30:18,126 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:30:18,126 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 14:30:18,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:30:18 BoogieIcfgContainer [2022-12-13 14:30:18,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:30:18,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:30:18,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:30:18,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:30:18,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:30:17" (1/3) ... [2022-12-13 14:30:18,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369d753c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:30:18, skipping insertion in model container [2022-12-13 14:30:18,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:30:17" (2/3) ... [2022-12-13 14:30:18,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369d753c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:30:18, skipping insertion in model container [2022-12-13 14:30:18,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:30:18" (3/3) ... [2022-12-13 14:30:18,134 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2022-12-13 14:30:18,140 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 14:30:18,147 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:30:18,147 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 14:30:18,147 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 14:30:18,239 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2022-12-13 14:30:18,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 201 transitions, 509 flow [2022-12-13 14:30:18,309 INFO L130 PetriNetUnfolder]: 7/138 cut-off events. [2022-12-13 14:30:18,309 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 14:30:18,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 138 events. 7/138 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 116. Up to 3 conditions per place. [2022-12-13 14:30:18,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 201 transitions, 509 flow [2022-12-13 14:30:18,316 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 125 transitions, 301 flow [2022-12-13 14:30:18,319 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:30:18,326 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 125 transitions, 301 flow [2022-12-13 14:30:18,328 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 125 transitions, 301 flow [2022-12-13 14:30:18,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 125 transitions, 301 flow [2022-12-13 14:30:18,351 INFO L130 PetriNetUnfolder]: 6/125 cut-off events. [2022-12-13 14:30:18,352 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 14:30:18,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 125 events. 6/125 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 50 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 113. Up to 3 conditions per place. [2022-12-13 14:30:18,353 INFO L119 LiptonReduction]: Number of co-enabled transitions 1344 [2022-12-13 14:30:20,754 INFO L134 LiptonReduction]: Checked pairs total: 3220 [2022-12-13 14:30:20,754 INFO L136 LiptonReduction]: Total number of compositions: 89 [2022-12-13 14:30:20,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:30:20,772 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;@3ee3b56a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:30:20,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-13 14:30:20,780 INFO L130 PetriNetUnfolder]: 5/40 cut-off events. [2022-12-13 14:30:20,780 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 14:30:20,780 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:30:20,781 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:30:20,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-12-13 14:30:20,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:30:20,784 INFO L85 PathProgramCache]: Analyzing trace with hash -8483782, now seen corresponding path program 1 times [2022-12-13 14:30:20,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:30:20,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100182996] [2022-12-13 14:30:20,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:30:20,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:30:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:21,199 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 14:30:21,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:30:21,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100182996] [2022-12-13 14:30:21,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100182996] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:30:21,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:30:21,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:30:21,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978040251] [2022-12-13 14:30:21,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:30:21,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:30:21,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:30:21,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:30:21,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:30:21,279 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 292 [2022-12-13 14:30:21,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 14:30:21,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:30:21,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 292 [2022-12-13 14:30:21,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:30:21,452 INFO L130 PetriNetUnfolder]: 446/774 cut-off events. [2022-12-13 14:30:21,452 INFO L131 PetriNetUnfolder]: For 147/155 co-relation queries the response was YES. [2022-12-13 14:30:21,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 774 events. 446/774 cut-off events. For 147/155 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2791 event pairs, 216 based on Foata normal form. 9/729 useless extension candidates. Maximal degree in co-relation 1656. Up to 518 conditions per place. [2022-12-13 14:30:21,459 INFO L137 encePairwiseOnDemand]: 285/292 looper letters, 42 selfloop transitions, 6 changer transitions 4/60 dead transitions. [2022-12-13 14:30:21,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 308 flow [2022-12-13 14:30:21,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:30:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:30:21,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2022-12-13 14:30:21,474 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5878995433789954 [2022-12-13 14:30:21,474 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2022-12-13 14:30:21,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2022-12-13 14:30:21,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:30:21,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2022-12-13 14:30:21,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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 14:30:21,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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 14:30:21,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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 14:30:21,492 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 133 flow. Second operand 3 states and 515 transitions. [2022-12-13 14:30:21,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 308 flow [2022-12-13 14:30:21,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 252 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-12-13 14:30:21,501 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 139 flow [2022-12-13 14:30:21,503 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2022-12-13 14:30:21,506 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -9 predicate places. [2022-12-13 14:30:21,507 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 139 flow [2022-12-13 14:30:21,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 14:30:21,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:30:21,507 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:30:21,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:30:21,508 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-12-13 14:30:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:30:21,508 INFO L85 PathProgramCache]: Analyzing trace with hash 942068572, now seen corresponding path program 2 times [2022-12-13 14:30:21,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:30:21,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178556841] [2022-12-13 14:30:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:30:21,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:30:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:21,671 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 14:30:21,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:30:21,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178556841] [2022-12-13 14:30:21,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178556841] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:30:21,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:30:21,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:30:21,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758412955] [2022-12-13 14:30:21,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:30:21,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:30:21,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:30:21,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:30:21,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:30:21,713 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 292 [2022-12-13 14:30:21,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 14:30:21,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:30:21,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 292 [2022-12-13 14:30:21,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:30:21,862 INFO L130 PetriNetUnfolder]: 579/1012 cut-off events. [2022-12-13 14:30:21,862 INFO L131 PetriNetUnfolder]: For 352/356 co-relation queries the response was YES. [2022-12-13 14:30:21,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2521 conditions, 1012 events. 579/1012 cut-off events. For 352/356 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4099 event pairs, 151 based on Foata normal form. 5/949 useless extension candidates. Maximal degree in co-relation 1100. Up to 493 conditions per place. [2022-12-13 14:30:21,865 INFO L137 encePairwiseOnDemand]: 284/292 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2022-12-13 14:30:21,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 67 transitions, 322 flow [2022-12-13 14:30:21,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:30:21,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:30:21,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2022-12-13 14:30:21,867 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5901826484018264 [2022-12-13 14:30:21,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2022-12-13 14:30:21,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2022-12-13 14:30:21,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:30:21,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2022-12-13 14:30:21,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 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 14:30:21,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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 14:30:21,870 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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 14:30:21,870 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 139 flow. Second operand 3 states and 517 transitions. [2022-12-13 14:30:21,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 67 transitions, 322 flow [2022-12-13 14:30:21,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 67 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:30:21,871 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2022-12-13 14:30:21,871 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2022-12-13 14:30:21,872 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -9 predicate places. [2022-12-13 14:30:21,872 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2022-12-13 14:30:21,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 14:30:21,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2022-12-13 14:30:21,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 12 remaining) [2022-12-13 14:30:21,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 12 remaining) [2022-12-13 14:30:21,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 12 remaining) [2022-12-13 14:30:21,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 12 remaining) [2022-12-13 14:30:21,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 12 remaining) [2022-12-13 14:30:21,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2022-12-13 14:30:21,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork5Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2022-12-13 14:30:21,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork5Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2022-12-13 14:30:21,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork5Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2022-12-13 14:30:21,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork5Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-12-13 14:30:21,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork5Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-12-13 14:30:21,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:30:21,876 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2022-12-13 14:30:21,879 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 14:30:21,879 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 14:30:21,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 02:30:21 BasicIcfg [2022-12-13 14:30:21,881 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 14:30:21,882 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:30:21,882 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:30:21,882 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:30:21,882 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:30:18" (3/4) ... [2022-12-13 14:30:21,884 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 14:30:21,889 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread0 [2022-12-13 14:30:21,889 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 14:30:21,889 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 14:30:21,889 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-13 14:30:21,892 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-12-13 14:30:21,892 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 14:30:21,892 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 14:30:21,892 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 14:30:21,912 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facbd1e5-859a-4ad6-89ed-d628331bc6bd/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 14:30:21,912 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:30:21,913 INFO L158 Benchmark]: Toolchain (without parser) took 4690.09ms. Allocated memory is still 138.4MB. Free memory was 99.2MB in the beginning and 37.9MB in the end (delta: 61.3MB). Peak memory consumption was 63.4MB. Max. memory is 16.1GB. [2022-12-13 14:30:21,913 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 113.2MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:30:21,914 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.64ms. Allocated memory is still 138.4MB. Free memory was 99.2MB in the beginning and 65.7MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-12-13 14:30:21,914 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.43ms. Allocated memory is still 138.4MB. Free memory was 65.7MB in the beginning and 63.1MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 14:30:21,914 INFO L158 Benchmark]: Boogie Preprocessor took 26.16ms. Allocated memory is still 138.4MB. Free memory was 63.1MB in the beginning and 61.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:30:21,915 INFO L158 Benchmark]: RCFGBuilder took 347.64ms. Allocated memory is still 138.4MB. Free memory was 61.7MB in the beginning and 101.6MB in the end (delta: -39.9MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2022-12-13 14:30:21,915 INFO L158 Benchmark]: TraceAbstraction took 3751.91ms. Allocated memory is still 138.4MB. Free memory was 101.1MB in the beginning and 40.0MB in the end (delta: 61.1MB). Peak memory consumption was 61.1MB. Max. memory is 16.1GB. [2022-12-13 14:30:21,915 INFO L158 Benchmark]: Witness Printer took 30.68ms. Allocated memory is still 138.4MB. Free memory was 40.0MB in the beginning and 37.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:30:21,917 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 113.2MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 488.64ms. Allocated memory is still 138.4MB. Free memory was 99.2MB in the beginning and 65.7MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.43ms. Allocated memory is still 138.4MB. Free memory was 65.7MB in the beginning and 63.1MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.16ms. Allocated memory is still 138.4MB. Free memory was 63.1MB in the beginning and 61.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 347.64ms. Allocated memory is still 138.4MB. Free memory was 61.7MB in the beginning and 101.6MB in the end (delta: -39.9MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3751.91ms. Allocated memory is still 138.4MB. Free memory was 101.1MB in the beginning and 40.0MB in the end (delta: 61.1MB). Peak memory consumption was 61.1MB. Max. memory is 16.1GB. * Witness Printer took 30.68ms. Allocated memory is still 138.4MB. Free memory was 40.0MB in the beginning and 37.9MB in the end (delta: 2.1MB). 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: 2.4s, 138 PlacesBefore, 55 PlacesAfterwards, 125 TransitionsBefore, 41 TransitionsAfterwards, 1344 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 89 TotalNumberOfCompositions, 3220 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2150, independent: 2016, independent conditional: 0, independent unconditional: 2016, dependent: 134, dependent conditional: 0, dependent unconditional: 134, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 717, independent: 679, independent conditional: 0, independent unconditional: 679, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2150, independent: 1337, independent conditional: 0, independent unconditional: 1337, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 717, unknown conditional: 0, unknown unconditional: 717] , Statistics on independence cache: Total cache size (in pairs): 59, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1123]: 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 11 procedures, 230 locations, 12 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: 3.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 138 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 266 IncrementalHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 30 mSDtfsCounter, 266 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=139occurred in iteration=1, InterpolantAutomatonStates: 6, 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 202 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 14:30:21,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facbd1e5-859a-4ad6-89ed-d628331bc6bd/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