./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-1_2-join.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_aa105953-c391-4041-9115-ca8114accd6e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa105953-c391-4041-9115-ca8114accd6e/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_aa105953-c391-4041-9115-ca8114accd6e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa105953-c391-4041-9115-ca8114accd6e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-1_2-join.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa105953-c391-4041-9115-ca8114accd6e/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_aa105953-c391-4041-9115-ca8114accd6e/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 fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f --- 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 21:59:36,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:59:36,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:59:36,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:59:36,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:59:36,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:59:36,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:59:36,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:59:36,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:59:36,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:59:36,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:59:36,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:59:36,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:59:36,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:59:36,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:59:36,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:59:36,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:59:36,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:59:36,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:59:36,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:59:36,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:59:36,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:59:36,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:59:36,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:59:36,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:59:36,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:59:36,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:59:36,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:59:36,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:59:36,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:59:36,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:59:36,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:59:36,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:59:36,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:59:36,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:59:36,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:59:36,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:59:36,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:59:36,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:59:36,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:59:36,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:59:36,658 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa105953-c391-4041-9115-ca8114accd6e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 21:59:36,673 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:59:36,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:59:36,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:59:36,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:59:36,674 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:59:36,674 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:59:36,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:59:36,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:59:36,675 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:59:36,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:59:36,675 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:59:36,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:59:36,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:59:36,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:59:36,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:59:36,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:59:36,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:59:36,676 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:59:36,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:59:36,677 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:59:36,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:59:36,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:59:36,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:59:36,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:59:36,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:59:36,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:59:36,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:59:36,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:59:36,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:59:36,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:59:36,678 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:59:36,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:59:36,679 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:59:36,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:59:36,679 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:59:36,679 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_aa105953-c391-4041-9115-ca8114accd6e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa105953-c391-4041-9115-ca8114accd6e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f [2022-12-13 21:59:36,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:59:36,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:59:36,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:59:36,907 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:59:36,908 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:59:36,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa105953-c391-4041-9115-ca8114accd6e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-races/race-1_2-join.i [2022-12-13 21:59:39,457 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:59:39,688 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:59:39,689 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa105953-c391-4041-9115-ca8114accd6e/sv-benchmarks/c/ldv-races/race-1_2-join.i [2022-12-13 21:59:39,701 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa105953-c391-4041-9115-ca8114accd6e/bin/uautomizer-uyxdKDjOR8/data/07f349483/f8b3e0ebc71543fe9b54c2552b916f6d/FLAGd37d4ff05 [2022-12-13 21:59:40,024 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa105953-c391-4041-9115-ca8114accd6e/bin/uautomizer-uyxdKDjOR8/data/07f349483/f8b3e0ebc71543fe9b54c2552b916f6d [2022-12-13 21:59:40,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:59:40,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:59:40,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:59:40,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:59:40,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:59:40,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:59:40" (1/1) ... [2022-12-13 21:59:40,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c468237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:40, skipping insertion in model container [2022-12-13 21:59:40,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:59:40" (1/1) ... [2022-12-13 21:59:40,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:59:40,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:59:40,643 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_aa105953-c391-4041-9115-ca8114accd6e/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2022-12-13 21:59:40,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:40,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:40,660 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:40,660 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:40,661 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:40,661 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:40,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:59:40,681 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:59:40,730 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_aa105953-c391-4041-9115-ca8114accd6e/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2022-12-13 21:59:40,731 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:40,731 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:40,734 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:40,735 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:40,735 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:59:40,736 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:59:40,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:59:40,864 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:59:40,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:40 WrapperNode [2022-12-13 21:59:40,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:59:40,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:59:40,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:59:40,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:59:40,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:40" (1/1) ... [2022-12-13 21:59:40,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:40" (1/1) ... [2022-12-13 21:59:40,928 INFO L138 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2022-12-13 21:59:40,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:59:40,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:59:40,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:59:40,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:59:40,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:40" (1/1) ... [2022-12-13 21:59:40,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:40" (1/1) ... [2022-12-13 21:59:40,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:40" (1/1) ... [2022-12-13 21:59:40,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:40" (1/1) ... [2022-12-13 21:59:40,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:40" (1/1) ... [2022-12-13 21:59:40,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:40" (1/1) ... [2022-12-13 21:59:40,947 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:40" (1/1) ... [2022-12-13 21:59:40,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:40" (1/1) ... [2022-12-13 21:59:40,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:59:40,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:59:40,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:59:40,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:59:40,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:40" (1/1) ... [2022-12-13 21:59:40,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:59:40,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa105953-c391-4041-9115-ca8114accd6e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:59:40,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa105953-c391-4041-9115-ca8114accd6e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:59:40,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa105953-c391-4041-9115-ca8114accd6e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:59:41,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 21:59:41,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:59:41,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 21:59:41,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:59:41,009 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 21:59:41,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:59:41,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 21:59:41,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:59:41,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:59:41,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:59:41,010 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 21:59:41,010 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 21:59:41,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:59:41,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:59:41,011 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 21:59:41,219 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:59:41,221 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:59:41,341 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:59:41,359 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:59:41,359 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 21:59:41,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:59:41 BoogieIcfgContainer [2022-12-13 21:59:41,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:59:41,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:59:41,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:59:41,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:59:41,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:59:40" (1/3) ... [2022-12-13 21:59:41,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@612640e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:59:41, skipping insertion in model container [2022-12-13 21:59:41,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:59:40" (2/3) ... [2022-12-13 21:59:41,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@612640e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:59:41, skipping insertion in model container [2022-12-13 21:59:41,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:59:41" (3/3) ... [2022-12-13 21:59:41,367 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2022-12-13 21:59:41,373 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 21:59:41,380 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:59:41,380 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-13 21:59:41,381 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:59:41,409 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 21:59:41,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 106 transitions, 220 flow [2022-12-13 21:59:41,463 INFO L130 PetriNetUnfolder]: 4/120 cut-off events. [2022-12-13 21:59:41,463 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 21:59:41,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 120 events. 4/120 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 161 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 73. Up to 3 conditions per place. [2022-12-13 21:59:41,466 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 106 transitions, 220 flow [2022-12-13 21:59:41,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 87 transitions, 180 flow [2022-12-13 21:59:41,471 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:59:41,478 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 87 transitions, 180 flow [2022-12-13 21:59:41,480 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 87 transitions, 180 flow [2022-12-13 21:59:41,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 87 transitions, 180 flow [2022-12-13 21:59:41,492 INFO L130 PetriNetUnfolder]: 1/87 cut-off events. [2022-12-13 21:59:41,492 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 21:59:41,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 87 events. 1/87 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-12-13 21:59:41,493 INFO L119 LiptonReduction]: Number of co-enabled transitions 210 [2022-12-13 21:59:43,601 INFO L134 LiptonReduction]: Checked pairs total: 276 [2022-12-13 21:59:43,602 INFO L136 LiptonReduction]: Total number of compositions: 88 [2022-12-13 21:59:43,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:59:43,616 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;@30841c06, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:59:43,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 21:59:43,617 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 21:59:43,617 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:59:43,617 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:59:43,618 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 21:59:43,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-13 21:59:43,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:59:43,621 INFO L85 PathProgramCache]: Analyzing trace with hash 389, now seen corresponding path program 1 times [2022-12-13 21:59:43,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:59:43,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319728292] [2022-12-13 21:59:43,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:59:43,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:59:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:59:43,750 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 21:59:43,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:59:43,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319728292] [2022-12-13 21:59:43,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319728292] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:59:43,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:59:43,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 21:59:43,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170197788] [2022-12-13 21:59:43,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:59:43,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:59:43,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:59:43,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:59:43,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:59:43,776 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 194 [2022-12-13 21:59:43,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 26 flow. Second operand has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 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 21:59:43,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:59:43,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 194 [2022-12-13 21:59:43,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:59:43,796 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2022-12-13 21:59:43,796 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 21:59:43,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 13 events. 3/13 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 16 event pairs, 3 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 20. Up to 14 conditions per place. [2022-12-13 21:59:43,798 INFO L137 encePairwiseOnDemand]: 191/194 looper letters, 5 selfloop transitions, 0 changer transitions 2/7 dead transitions. [2022-12-13 21:59:43,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 34 flow [2022-12-13 21:59:43,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:59:43,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:59:43,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 202 transitions. [2022-12-13 21:59:43,810 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.520618556701031 [2022-12-13 21:59:43,811 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 202 transitions. [2022-12-13 21:59:43,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 202 transitions. [2022-12-13 21:59:43,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:59:43,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 202 transitions. [2022-12-13 21:59:43,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 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 21:59:43,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 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 21:59:43,822 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 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 21:59:43,824 INFO L175 Difference]: Start difference. First operand has 14 places, 10 transitions, 26 flow. Second operand 2 states and 202 transitions. [2022-12-13 21:59:43,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 34 flow [2022-12-13 21:59:43,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:59:43,828 INFO L231 Difference]: Finished difference. Result has 10 places, 5 transitions, 11 flow [2022-12-13 21:59:43,829 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=11, PETRI_PLACES=10, PETRI_TRANSITIONS=5} [2022-12-13 21:59:43,832 INFO L288 CegarLoopForPetriNet]: 14 programPoint places, -4 predicate places. [2022-12-13 21:59:43,832 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 5 transitions, 11 flow [2022-12-13 21:59:43,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 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 21:59:43,833 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:59:43,833 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 21:59:43,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:59:43,833 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-13 21:59:43,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:59:43,833 INFO L85 PathProgramCache]: Analyzing trace with hash 11889085, now seen corresponding path program 1 times [2022-12-13 21:59:43,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:59:43,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625874234] [2022-12-13 21:59:43,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:59:43,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:59:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:59:43,979 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 21:59:43,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:59:43,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625874234] [2022-12-13 21:59:43,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625874234] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:59:43,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:59:43,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:59:43,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628426378] [2022-12-13 21:59:43,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:59:43,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:59:43,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:59:43,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:59:43,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:59:43,996 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 194 [2022-12-13 21:59:43,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 5 transitions, 11 flow. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 21:59:43,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:59:43,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 194 [2022-12-13 21:59:43,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:59:44,009 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 21:59:44,010 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:59:44,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2022-12-13 21:59:44,010 INFO L137 encePairwiseOnDemand]: 191/194 looper letters, 3 selfloop transitions, 2 changer transitions 1/6 dead transitions. [2022-12-13 21:59:44,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 25 flow [2022-12-13 21:59:44,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:59:44,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:59:44,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2022-12-13 21:59:44,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47594501718213056 [2022-12-13 21:59:44,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2022-12-13 21:59:44,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2022-12-13 21:59:44,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:59:44,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2022-12-13 21:59:44,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 21:59:44,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 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 21:59:44,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 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 21:59:44,015 INFO L175 Difference]: Start difference. First operand has 10 places, 5 transitions, 11 flow. Second operand 3 states and 277 transitions. [2022-12-13 21:59:44,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 25 flow [2022-12-13 21:59:44,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 25 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:59:44,015 INFO L231 Difference]: Finished difference. Result has 11 places, 5 transitions, 19 flow [2022-12-13 21:59:44,015 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=11, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=19, PETRI_PLACES=11, PETRI_TRANSITIONS=5} [2022-12-13 21:59:44,016 INFO L288 CegarLoopForPetriNet]: 14 programPoint places, -3 predicate places. [2022-12-13 21:59:44,016 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 5 transitions, 19 flow [2022-12-13 21:59:44,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 21:59:44,016 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:59:44,016 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 21:59:44,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:59:44,016 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-13 21:59:44,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:59:44,017 INFO L85 PathProgramCache]: Analyzing trace with hash 368566901, now seen corresponding path program 1 times [2022-12-13 21:59:44,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:59:44,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537477478] [2022-12-13 21:59:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:59:44,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:59:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:59:44,049 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:59:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:59:44,077 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:59:44,077 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:59:44,078 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-13 21:59:44,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-13 21:59:44,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-12-13 21:59:44,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-12-13 21:59:44,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-13 21:59:44,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:59:44,080 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 21:59:44,084 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 21:59:44,084 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 21:59:44,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 09:59:44 BasicIcfg [2022-12-13 21:59:44,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 21:59:44,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:59:44,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:59:44,098 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:59:44,098 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:59:41" (3/4) ... [2022-12-13 21:59:44,099 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 21:59:44,123 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa105953-c391-4041-9115-ca8114accd6e/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 21:59:44,123 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:59:44,124 INFO L158 Benchmark]: Toolchain (without parser) took 4096.67ms. Allocated memory is still 184.5MB. Free memory was 152.4MB in the beginning and 130.3MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-13 21:59:44,124 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 107.0MB. Free memory was 80.5MB in the beginning and 80.4MB in the end (delta: 142.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:59:44,124 INFO L158 Benchmark]: CACSL2BoogieTranslator took 837.00ms. Allocated memory is still 184.5MB. Free memory was 152.4MB in the beginning and 96.3MB in the end (delta: 56.0MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2022-12-13 21:59:44,125 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.70ms. Allocated memory is still 184.5MB. Free memory was 96.3MB in the beginning and 151.3MB in the end (delta: -54.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-13 21:59:44,125 INFO L158 Benchmark]: Boogie Preprocessor took 22.93ms. Allocated memory is still 184.5MB. Free memory was 151.3MB in the beginning and 149.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:59:44,125 INFO L158 Benchmark]: RCFGBuilder took 408.69ms. Allocated memory is still 184.5MB. Free memory was 149.2MB in the beginning and 128.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 21:59:44,125 INFO L158 Benchmark]: TraceAbstraction took 2734.99ms. Allocated memory is still 184.5MB. Free memory was 127.2MB in the beginning and 132.4MB in the end (delta: -5.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:59:44,126 INFO L158 Benchmark]: Witness Printer took 25.56ms. Allocated memory is still 184.5MB. Free memory was 132.4MB in the beginning and 130.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:59:44,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 107.0MB. Free memory was 80.5MB in the beginning and 80.4MB in the end (delta: 142.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 837.00ms. Allocated memory is still 184.5MB. Free memory was 152.4MB in the beginning and 96.3MB in the end (delta: 56.0MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.70ms. Allocated memory is still 184.5MB. Free memory was 96.3MB in the beginning and 151.3MB in the end (delta: -54.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.93ms. Allocated memory is still 184.5MB. Free memory was 151.3MB in the beginning and 149.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 408.69ms. Allocated memory is still 184.5MB. Free memory was 149.2MB in the beginning and 128.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2734.99ms. Allocated memory is still 184.5MB. Free memory was 127.2MB in the beginning and 132.4MB in the end (delta: -5.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 25.56ms. Allocated memory is still 184.5MB. Free memory was 132.4MB in the beginning and 130.3MB 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: 2.1s, 90 PlacesBefore, 14 PlacesAfterwards, 87 TransitionsBefore, 10 TransitionsAfterwards, 210 CoEnabledTransitionPairs, 7 FixpointIterations, 66 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 88 TotalNumberOfCompositions, 276 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 245, independent: 202, independent conditional: 0, independent unconditional: 202, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 129, independent: 114, independent conditional: 0, independent unconditional: 114, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 245, independent: 88, independent conditional: 0, independent unconditional: 88, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 129, unknown conditional: 0, unknown unconditional: 129] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=-1, t1={3:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={4:0}, pdev=2, t1={3:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, arg={0:0}, arg={0:0}, expression=0, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 111 locations, 5 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: 2.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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 RESULT: Ultimate proved your program to be incorrect! [2022-12-13 21:59:44,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa105953-c391-4041-9115-ca8114accd6e/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE