./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/lazy01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afac65aa-aa82-43ed-babb-92f40aa4730c/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afac65aa-aa82-43ed-babb-92f40aa4730c/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afac65aa-aa82-43ed-babb-92f40aa4730c/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afac65aa-aa82-43ed-babb-92f40aa4730c/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/lazy01.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afac65aa-aa82-43ed-babb-92f40aa4730c/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afac65aa-aa82-43ed-babb-92f40aa4730c/bin/uautomizer-tPACEb0tL8 --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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- 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-e04fb08 [2022-11-16 12:39:43,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:39:43,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:39:43,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:39:43,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:39:43,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:39:43,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:39:43,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:39:43,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:39:43,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:39:43,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:39:43,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:39:43,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:39:43,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:39:43,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:39:43,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:39:43,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:39:43,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:39:43,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:39:43,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:39:43,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:39:43,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:39:43,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:39:43,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:39:43,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:39:43,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:39:43,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:39:43,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:39:43,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:39:43,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:39:43,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:39:43,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:39:43,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:39:43,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:39:43,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:39:43,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:39:43,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:39:43,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:39:43,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:39:43,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:39:43,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:39:43,523 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afac65aa-aa82-43ed-babb-92f40aa4730c/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:39:43,544 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:39:43,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:39:43,545 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:39:43,545 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:39:43,546 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:39:43,546 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:39:43,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:39:43,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:39:43,548 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:39:43,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:39:43,548 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:39:43,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:39:43,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:39:43,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:39:43,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:39:43,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:39:43,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:39:43,550 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:39:43,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:39:43,550 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:39:43,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:39:43,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:39:43,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:39:43,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:39:43,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:39:43,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:39:43,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:39:43,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:39:43,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:39:43,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:39:43,553 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:39:43,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:39:43,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:39:43,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_afac65aa-aa82-43ed-babb-92f40aa4730c/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afac65aa-aa82-43ed-babb-92f40aa4730c/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2022-11-16 12:39:43,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:39:43,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:39:43,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:39:43,856 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:39:43,857 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:39:43,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afac65aa-aa82-43ed-babb-92f40aa4730c/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread/lazy01.i [2022-11-16 12:39:43,978 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afac65aa-aa82-43ed-babb-92f40aa4730c/bin/uautomizer-tPACEb0tL8/data/283a4b7df/3f325e07c3314b8ab60dfdc6738582f1/FLAG00f04715e [2022-11-16 12:39:44,745 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:39:44,745 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afac65aa-aa82-43ed-babb-92f40aa4730c/sv-benchmarks/c/pthread/lazy01.i [2022-11-16 12:39:44,761 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afac65aa-aa82-43ed-babb-92f40aa4730c/bin/uautomizer-tPACEb0tL8/data/283a4b7df/3f325e07c3314b8ab60dfdc6738582f1/FLAG00f04715e [2022-11-16 12:39:45,015 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afac65aa-aa82-43ed-babb-92f40aa4730c/bin/uautomizer-tPACEb0tL8/data/283a4b7df/3f325e07c3314b8ab60dfdc6738582f1 [2022-11-16 12:39:45,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:39:45,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:39:45,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:39:45,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:39:45,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:39:45,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:39:45" (1/1) ... [2022-11-16 12:39:45,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d812b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:45, skipping insertion in model container [2022-11-16 12:39:45,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:39:45" (1/1) ... [2022-11-16 12:39:45,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:39:45,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:39:45,575 WARN L229 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_afac65aa-aa82-43ed-babb-92f40aa4730c/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2022-11-16 12:39:45,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:39:45,609 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:39:45,672 WARN L229 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_afac65aa-aa82-43ed-babb-92f40aa4730c/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2022-11-16 12:39:45,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:39:45,730 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:39:45,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:45 WrapperNode [2022-11-16 12:39:45,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:39:45,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:39:45,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:39:45,732 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:39:45,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:45" (1/1) ... [2022-11-16 12:39:45,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:45" (1/1) ... [2022-11-16 12:39:45,801 INFO L138 Inliner]: procedures = 169, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2022-11-16 12:39:45,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:39:45,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:39:45,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:39:45,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:39:45,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:45" (1/1) ... [2022-11-16 12:39:45,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:45" (1/1) ... [2022-11-16 12:39:45,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:45" (1/1) ... [2022-11-16 12:39:45,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:45" (1/1) ... [2022-11-16 12:39:45,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:45" (1/1) ... [2022-11-16 12:39:45,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:45" (1/1) ... [2022-11-16 12:39:45,827 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:45" (1/1) ... [2022-11-16 12:39:45,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:45" (1/1) ... [2022-11-16 12:39:45,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:39:45,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:39:45,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:39:45,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:39:45,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:45" (1/1) ... [2022-11-16 12:39:45,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:39:45,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afac65aa-aa82-43ed-babb-92f40aa4730c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:45,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afac65aa-aa82-43ed-babb-92f40aa4730c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:39:45,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afac65aa-aa82-43ed-babb-92f40aa4730c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:39:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:39:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:39:45,961 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:39:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:39:45,961 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:39:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:39:45,962 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:39:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:39:45,963 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:39:45,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:39:45,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:39:45,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:39:45,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:39:45,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:39:45,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:39:45,967 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:39:46,193 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:39:46,209 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:39:46,535 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:39:46,544 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:39:46,547 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:39:46,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:39:46 BoogieIcfgContainer [2022-11-16 12:39:46,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:39:46,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:39:46,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:39:46,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:39:46,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:39:45" (1/3) ... [2022-11-16 12:39:46,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4ab44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:39:46, skipping insertion in model container [2022-11-16 12:39:46,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:39:45" (2/3) ... [2022-11-16 12:39:46,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4ab44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:39:46, skipping insertion in model container [2022-11-16 12:39:46,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:39:46" (3/3) ... [2022-11-16 12:39:46,563 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2022-11-16 12:39:46,574 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:39:46,588 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:39:46,589 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:39:46,589 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:39:46,685 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:39:46,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 91 transitions, 206 flow [2022-11-16 12:39:46,830 INFO L130 PetriNetUnfolder]: 1/88 cut-off events. [2022-11-16 12:39:46,830 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:39:46,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 88 events. 1/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-11-16 12:39:46,836 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 91 transitions, 206 flow [2022-11-16 12:39:46,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 70 transitions, 155 flow [2022-11-16 12:39:46,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:39:46,865 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;@477f9482, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:39:46,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-16 12:39:46,912 INFO L130 PetriNetUnfolder]: 0/63 cut-off events. [2022-11-16 12:39:46,913 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:39:46,913 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:46,914 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:46,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 12:39:46,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:46,922 INFO L85 PathProgramCache]: Analyzing trace with hash -942189289, now seen corresponding path program 1 times [2022-11-16 12:39:46,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:46,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780608876] [2022-11-16 12:39:46,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:46,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:47,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:47,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:47,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780608876] [2022-11-16 12:39:47,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780608876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:47,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:47,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:39:47,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953966970] [2022-11-16 12:39:47,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:47,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:39:47,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:47,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:39:47,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:39:47,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 91 [2022-11-16 12:39:47,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2022-11-16 12:39:47,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:47,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 91 [2022-11-16 12:39:47,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:47,742 INFO L130 PetriNetUnfolder]: 19/154 cut-off events. [2022-11-16 12:39:47,742 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-16 12:39:47,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 154 events. 19/154 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 431 event pairs, 9 based on Foata normal form. 2/153 useless extension candidates. Maximal degree in co-relation 152. Up to 37 conditions per place. [2022-11-16 12:39:47,785 INFO L137 encePairwiseOnDemand]: 87/91 looper letters, 12 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2022-11-16 12:39:47,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 75 transitions, 201 flow [2022-11-16 12:39:47,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:39:47,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:39:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2022-11-16 12:39:47,804 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-11-16 12:39:47,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2022-11-16 12:39:47,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2022-11-16 12:39:47,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:47,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2022-11-16 12:39:47,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2022-11-16 12:39:47,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2022-11-16 12:39:47,849 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2022-11-16 12:39:47,851 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 155 flow. Second operand 3 states and 247 transitions. [2022-11-16 12:39:47,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 75 transitions, 201 flow [2022-11-16 12:39:47,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 75 transitions, 189 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:39:47,860 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 165 flow [2022-11-16 12:39:47,862 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2022-11-16 12:39:47,866 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, -2 predicate places. [2022-11-16 12:39:47,867 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 165 flow [2022-11-16 12:39:47,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2022-11-16 12:39:47,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:47,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:47,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:39:47,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 12:39:47,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:47,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1778880871, now seen corresponding path program 1 times [2022-11-16 12:39:47,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:47,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099601250] [2022-11-16 12:39:47,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:47,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:48,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:48,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:48,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099601250] [2022-11-16 12:39:48,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099601250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:48,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:48,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:39:48,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074077416] [2022-11-16 12:39:48,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:48,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:39:48,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:48,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:39:48,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:39:48,236 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2022-11-16 12:39:48,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2022-11-16 12:39:48,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:48,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2022-11-16 12:39:48,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:48,352 INFO L130 PetriNetUnfolder]: 16/160 cut-off events. [2022-11-16 12:39:48,353 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-16 12:39:48,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 160 events. 16/160 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 495 event pairs, 3 based on Foata normal form. 14/174 useless extension candidates. Maximal degree in co-relation 120. Up to 28 conditions per place. [2022-11-16 12:39:48,355 INFO L137 encePairwiseOnDemand]: 86/91 looper letters, 16 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2022-11-16 12:39:48,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 220 flow [2022-11-16 12:39:48,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:39:48,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:39:48,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2022-11-16 12:39:48,358 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-11-16 12:39:48,359 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 234 transitions. [2022-11-16 12:39:48,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 234 transitions. [2022-11-16 12:39:48,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:48,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 234 transitions. [2022-11-16 12:39:48,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2022-11-16 12:39:48,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2022-11-16 12:39:48,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2022-11-16 12:39:48,364 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 165 flow. Second operand 3 states and 234 transitions. [2022-11-16 12:39:48,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 220 flow [2022-11-16 12:39:48,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:39:48,379 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 172 flow [2022-11-16 12:39:48,380 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2022-11-16 12:39:48,381 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, -1 predicate places. [2022-11-16 12:39:48,381 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 172 flow [2022-11-16 12:39:48,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2022-11-16 12:39:48,382 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:48,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:48,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:39:48,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 12:39:48,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:48,383 INFO L85 PathProgramCache]: Analyzing trace with hash 104289371, now seen corresponding path program 1 times [2022-11-16 12:39:48,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:48,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030124124] [2022-11-16 12:39:48,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:48,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:48,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:48,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030124124] [2022-11-16 12:39:48,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030124124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:48,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:48,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:39:48,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215918163] [2022-11-16 12:39:48,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:48,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:39:48,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:48,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:39:48,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:39:48,549 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 91 [2022-11-16 12:39:48,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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) [2022-11-16 12:39:48,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:48,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 91 [2022-11-16 12:39:48,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:48,619 INFO L130 PetriNetUnfolder]: 14/146 cut-off events. [2022-11-16 12:39:48,619 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 12:39:48,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 146 events. 14/146 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 400 event pairs, 8 based on Foata normal form. 1/145 useless extension candidates. Maximal degree in co-relation 73. Up to 24 conditions per place. [2022-11-16 12:39:48,622 INFO L137 encePairwiseOnDemand]: 87/91 looper letters, 12 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2022-11-16 12:39:48,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 217 flow [2022-11-16 12:39:48,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:39:48,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:39:48,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2022-11-16 12:39:48,625 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2022-11-16 12:39:48,626 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 325 transitions. [2022-11-16 12:39:48,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 325 transitions. [2022-11-16 12:39:48,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:48,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 325 transitions. [2022-11-16 12:39:48,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 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) [2022-11-16 12:39:48,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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) [2022-11-16 12:39:48,630 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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) [2022-11-16 12:39:48,631 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 172 flow. Second operand 4 states and 325 transitions. [2022-11-16 12:39:48,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 217 flow [2022-11-16 12:39:48,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 76 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:39:48,634 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 179 flow [2022-11-16 12:39:48,634 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2022-11-16 12:39:48,635 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 2 predicate places. [2022-11-16 12:39:48,636 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 179 flow [2022-11-16 12:39:48,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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) [2022-11-16 12:39:48,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:48,636 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:48,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:39:48,637 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 12:39:48,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:48,638 INFO L85 PathProgramCache]: Analyzing trace with hash -716327703, now seen corresponding path program 1 times [2022-11-16 12:39:48,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:48,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110120672] [2022-11-16 12:39:48,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:48,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:48,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:48,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:48,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110120672] [2022-11-16 12:39:48,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110120672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:48,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:48,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:39:48,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017748154] [2022-11-16 12:39:48,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:48,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:39:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:48,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:39:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:39:48,863 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 91 [2022-11-16 12:39:48,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 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) [2022-11-16 12:39:48,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:48,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 91 [2022-11-16 12:39:48,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:49,010 INFO L130 PetriNetUnfolder]: 16/141 cut-off events. [2022-11-16 12:39:49,010 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-11-16 12:39:49,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 141 events. 16/141 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 403 event pairs, 1 based on Foata normal form. 2/143 useless extension candidates. Maximal degree in co-relation 164. Up to 24 conditions per place. [2022-11-16 12:39:49,016 INFO L137 encePairwiseOnDemand]: 85/91 looper letters, 17 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2022-11-16 12:39:49,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 82 transitions, 257 flow [2022-11-16 12:39:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:39:49,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:39:49,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 480 transitions. [2022-11-16 12:39:49,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8791208791208791 [2022-11-16 12:39:49,020 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 480 transitions. [2022-11-16 12:39:49,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 480 transitions. [2022-11-16 12:39:49,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:49,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 480 transitions. [2022-11-16 12:39:49,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 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) [2022-11-16 12:39:49,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 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) [2022-11-16 12:39:49,033 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 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) [2022-11-16 12:39:49,033 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 179 flow. Second operand 6 states and 480 transitions. [2022-11-16 12:39:49,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 82 transitions, 257 flow [2022-11-16 12:39:49,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 82 transitions, 249 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-16 12:39:49,043 INFO L231 Difference]: Finished difference. Result has 88 places, 74 transitions, 200 flow [2022-11-16 12:39:49,044 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=88, PETRI_TRANSITIONS=74} [2022-11-16 12:39:49,047 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 8 predicate places. [2022-11-16 12:39:49,053 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 74 transitions, 200 flow [2022-11-16 12:39:49,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 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) [2022-11-16 12:39:49,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:49,054 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:49,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:39:49,055 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-16 12:39:49,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:49,055 INFO L85 PathProgramCache]: Analyzing trace with hash -435672625, now seen corresponding path program 1 times [2022-11-16 12:39:49,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:49,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075684699] [2022-11-16 12:39:49,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:49,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:39:49,126 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:39:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:39:49,216 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:39:49,216 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:39:49,217 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-16 12:39:49,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-16 12:39:49,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-16 12:39:49,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-11-16 12:39:49,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-16 12:39:49,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:39:49,222 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 12:39:49,230 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:39:49,230 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:39:49,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:39:49 BasicIcfg [2022-11-16 12:39:49,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:39:49,282 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:39:49,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:39:49,282 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:39:49,283 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:39:46" (3/4) ... [2022-11-16 12:39:49,285 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 12:39:49,354 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afac65aa-aa82-43ed-babb-92f40aa4730c/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:39:49,354 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:39:49,355 INFO L158 Benchmark]: Toolchain (without parser) took 4335.00ms. Allocated memory is still 140.5MB. Free memory was 107.1MB in the beginning and 61.8MB in the end (delta: 45.3MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. [2022-11-16 12:39:49,355 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 92.3MB. Free memory is still 44.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:39:49,356 INFO L158 Benchmark]: CACSL2BoogieTranslator took 704.33ms. Allocated memory is still 140.5MB. Free memory was 107.1MB in the beginning and 107.7MB in the end (delta: -565.7kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:39:49,356 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.11ms. Allocated memory is still 140.5MB. Free memory was 107.7MB in the beginning and 105.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:39:49,357 INFO L158 Benchmark]: Boogie Preprocessor took 29.46ms. Allocated memory is still 140.5MB. Free memory was 105.6MB in the beginning and 104.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:39:49,357 INFO L158 Benchmark]: RCFGBuilder took 718.30ms. Allocated memory is still 140.5MB. Free memory was 104.6MB in the beginning and 90.2MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 12:39:49,358 INFO L158 Benchmark]: TraceAbstraction took 2727.71ms. Allocated memory is still 140.5MB. Free memory was 89.7MB in the beginning and 69.2MB in the end (delta: 20.5MB). Peak memory consumption was 23.3MB. Max. memory is 16.1GB. [2022-11-16 12:39:49,358 INFO L158 Benchmark]: Witness Printer took 72.15ms. Allocated memory is still 140.5MB. Free memory was 69.2MB in the beginning and 61.8MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 12:39:49,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 92.3MB. Free memory is still 44.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 704.33ms. Allocated memory is still 140.5MB. Free memory was 107.1MB in the beginning and 107.7MB in the end (delta: -565.7kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.11ms. Allocated memory is still 140.5MB. Free memory was 107.7MB in the beginning and 105.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.46ms. Allocated memory is still 140.5MB. Free memory was 105.6MB in the beginning and 104.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 718.30ms. Allocated memory is still 140.5MB. Free memory was 104.6MB in the beginning and 90.2MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2727.71ms. Allocated memory is still 140.5MB. Free memory was 89.7MB in the beginning and 69.2MB in the end (delta: 20.5MB). Peak memory consumption was 23.3MB. Max. memory is 16.1GB. * Witness Printer took 72.15ms. Allocated memory is still 140.5MB. Free memory was 69.2MB in the beginning and 61.8MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L703] 0 int data = 0; VAL [data=0] [L702] 0 pthread_mutex_t mutex; VAL [data=0, mutex={3:0}] [L731] 0 pthread_t t1, t2, t3; VAL [data=0, mutex={3:0}, t1={6:0}, t2={7:0}, t3={5:0}] [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, pthread_create(&t1, 0, thread1, 0)=-2, t1={6:0}, t2={7:0}, t3={5:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t2, 0, thread2, 0)=-1, t1={6:0}, t2={7:0}, t3={5:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t3, 0, thread3, 0)=0, t1={6:0}, t2={7:0}, t3={5:0}] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] COND TRUE 3 data >= 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L722] 3 reach_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 734]: 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. - UnprovableResult [Line: 733]: 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. - UnprovableResult [Line: 732]: 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 7 procedures, 123 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: 2.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 93 IncrementalHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 19 mSDtfsCounter, 93 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=4, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 253 NumberOfCodeBlocks, 253 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 456 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-16 12:39:49,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afac65aa-aa82-43ed-babb-92f40aa4730c/bin/uautomizer-tPACEb0tL8/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