./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_258e2088-28db-481a-b5dd-6fcb78822e40/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258e2088-28db-481a-b5dd-6fcb78822e40/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_258e2088-28db-481a-b5dd-6fcb78822e40/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258e2088-28db-481a-b5dd-6fcb78822e40/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258e2088-28db-481a-b5dd-6fcb78822e40/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_258e2088-28db-481a-b5dd-6fcb78822e40/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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- 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 21:34:14,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:34:14,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:34:14,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:34:14,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:34:14,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:34:14,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:34:14,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:34:14,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:34:14,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:34:14,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:34:14,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:34:14,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:34:14,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:34:14,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:34:14,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:34:14,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:34:14,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:34:14,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:34:14,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:34:14,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:34:14,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:34:14,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:34:14,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:34:14,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:34:14,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:34:14,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:34:14,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:34:14,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:34:14,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:34:14,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:34:14,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:34:14,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:34:14,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:34:14,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:34:14,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:34:14,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:34:14,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:34:14,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:34:14,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:34:14,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:34:14,742 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258e2088-28db-481a-b5dd-6fcb78822e40/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 21:34:14,754 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:34:14,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:34:14,755 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:34:14,755 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:34:14,756 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:34:14,756 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:34:14,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:34:14,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:34:14,756 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:34:14,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:34:14,757 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:34:14,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:34:14,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:34:14,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:34:14,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:34:14,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:34:14,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:34:14,758 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:34:14,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:34:14,758 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:34:14,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:34:14,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:34:14,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:34:14,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:34:14,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:34:14,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:34:14,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:34:14,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:34:14,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:34:14,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:34:14,760 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:34:14,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:34:14,760 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:34:14,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:34:14,760 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:34:14,760 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_258e2088-28db-481a-b5dd-6fcb78822e40/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258e2088-28db-481a-b5dd-6fcb78822e40/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2022-12-13 21:34:14,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:34:14,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:34:14,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:34:14,958 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:34:14,959 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:34:14,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258e2088-28db-481a-b5dd-6fcb78822e40/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-12-13 21:34:17,578 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:34:17,776 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:34:17,776 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258e2088-28db-481a-b5dd-6fcb78822e40/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-12-13 21:34:17,788 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258e2088-28db-481a-b5dd-6fcb78822e40/bin/uautomizer-uyxdKDjOR8/data/4e30e3c84/cb025ae2243d45f8bca58f914e7c5abc/FLAG1c6191e73 [2022-12-13 21:34:17,799 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258e2088-28db-481a-b5dd-6fcb78822e40/bin/uautomizer-uyxdKDjOR8/data/4e30e3c84/cb025ae2243d45f8bca58f914e7c5abc [2022-12-13 21:34:17,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:34:17,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:34:17,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:34:17,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:34:17,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:34:17,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:34:17" (1/1) ... [2022-12-13 21:34:17,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49fd3c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:17, skipping insertion in model container [2022-12-13 21:34:17,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:34:17" (1/1) ... [2022-12-13 21:34:17,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:34:17,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:34:18,189 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_258e2088-28db-481a-b5dd-6fcb78822e40/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-12-13 21:34:18,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:34:18,228 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:34:18,261 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_258e2088-28db-481a-b5dd-6fcb78822e40/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-12-13 21:34:18,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:34:18,312 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:34:18,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:18 WrapperNode [2022-12-13 21:34:18,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:34:18,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:34:18,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:34:18,314 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:34:18,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:18" (1/1) ... [2022-12-13 21:34:18,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:18" (1/1) ... [2022-12-13 21:34:18,361 INFO L138 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 204 [2022-12-13 21:34:18,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:34:18,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:34:18,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:34:18,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:34:18,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:18" (1/1) ... [2022-12-13 21:34:18,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:18" (1/1) ... [2022-12-13 21:34:18,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:18" (1/1) ... [2022-12-13 21:34:18,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:18" (1/1) ... [2022-12-13 21:34:18,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:18" (1/1) ... [2022-12-13 21:34:18,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:18" (1/1) ... [2022-12-13 21:34:18,389 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:18" (1/1) ... [2022-12-13 21:34:18,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:18" (1/1) ... [2022-12-13 21:34:18,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:34:18,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:34:18,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:34:18,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:34:18,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:18" (1/1) ... [2022-12-13 21:34:18,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:34:18,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258e2088-28db-481a-b5dd-6fcb78822e40/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:34:18,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258e2088-28db-481a-b5dd-6fcb78822e40/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:34:18,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258e2088-28db-481a-b5dd-6fcb78822e40/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:34:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:34:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 21:34:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-12-13 21:34:18,450 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-12-13 21:34:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:34:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:34:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-13 21:34:18,451 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-13 21:34:18,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:34:18,451 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 21:34:18,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:34:18,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:34:18,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 21:34:18,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:34:18,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:34:18,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:34:18,453 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 21:34:18,570 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:34:18,572 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:34:18,815 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:34:18,822 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:34:18,822 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-12-13 21:34:18,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:34:18 BoogieIcfgContainer [2022-12-13 21:34:18,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:34:18,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:34:18,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:34:18,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:34:18,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:34:17" (1/3) ... [2022-12-13 21:34:18,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7351866b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:34:18, skipping insertion in model container [2022-12-13 21:34:18,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:18" (2/3) ... [2022-12-13 21:34:18,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7351866b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:34:18, skipping insertion in model container [2022-12-13 21:34:18,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:34:18" (3/3) ... [2022-12-13 21:34:18,830 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2022-12-13 21:34:18,836 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 21:34:18,844 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:34:18,844 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 21:34:18,844 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:34:18,918 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 21:34:18,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 220 transitions, 462 flow [2022-12-13 21:34:19,027 INFO L130 PetriNetUnfolder]: 52/414 cut-off events. [2022-12-13 21:34:19,027 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-12-13 21:34:19,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 414 events. 52/414 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1661 event pairs, 0 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 213. Up to 8 conditions per place. [2022-12-13 21:34:19,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 220 transitions, 462 flow [2022-12-13 21:34:19,041 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 218 transitions, 452 flow [2022-12-13 21:34:19,044 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:34:19,052 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 218 transitions, 452 flow [2022-12-13 21:34:19,054 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 218 transitions, 452 flow [2022-12-13 21:34:19,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 218 transitions, 452 flow [2022-12-13 21:34:19,100 INFO L130 PetriNetUnfolder]: 48/402 cut-off events. [2022-12-13 21:34:19,100 INFO L131 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2022-12-13 21:34:19,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 402 events. 48/402 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1544 event pairs, 0 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 201. Up to 8 conditions per place. [2022-12-13 21:34:19,109 INFO L119 LiptonReduction]: Number of co-enabled transitions 14088 [2022-12-13 21:34:24,092 INFO L134 LiptonReduction]: Checked pairs total: 23084 [2022-12-13 21:34:24,092 INFO L136 LiptonReduction]: Total number of compositions: 178 [2022-12-13 21:34:24,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:34:24,109 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;@5c1a72de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:34:24,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 21:34:24,112 INFO L130 PetriNetUnfolder]: 0/19 cut-off events. [2022-12-13 21:34:24,113 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:34:24,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:34:24,113 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 21:34:24,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 21:34:24,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:24,117 INFO L85 PathProgramCache]: Analyzing trace with hash -368566034, now seen corresponding path program 1 times [2022-12-13 21:34:24,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:34:24,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584477049] [2022-12-13 21:34:24,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:24,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:34:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:34:24,233 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:34:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:34:24,285 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:34:24,287 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:34:24,287 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-12-13 21:34:24,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-12-13 21:34:24,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-13 21:34:24,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-12-13 21:34:24,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:34:24,290 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 21:34:24,293 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 21:34:24,293 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 21:34:24,346 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-12-13 21:34:24,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 340 transitions, 728 flow [2022-12-13 21:34:24,537 INFO L130 PetriNetUnfolder]: 191/1219 cut-off events. [2022-12-13 21:34:24,537 INFO L131 PetriNetUnfolder]: For 72/100 co-relation queries the response was YES. [2022-12-13 21:34:24,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 1219 events. 191/1219 cut-off events. For 72/100 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 7575 event pairs, 2 based on Foata normal form. 0/1029 useless extension candidates. Maximal degree in co-relation 769. Up to 32 conditions per place. [2022-12-13 21:34:24,545 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 340 transitions, 728 flow [2022-12-13 21:34:24,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 307 places, 340 transitions, 728 flow [2022-12-13 21:34:24,552 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:34:24,552 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 307 places, 340 transitions, 728 flow [2022-12-13 21:34:24,552 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 307 places, 340 transitions, 728 flow [2022-12-13 21:34:24,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 340 transitions, 728 flow [2022-12-13 21:34:24,739 INFO L130 PetriNetUnfolder]: 191/1219 cut-off events. [2022-12-13 21:34:24,740 INFO L131 PetriNetUnfolder]: For 72/100 co-relation queries the response was YES. [2022-12-13 21:34:24,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 1219 events. 191/1219 cut-off events. For 72/100 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 7575 event pairs, 2 based on Foata normal form. 0/1029 useless extension candidates. Maximal degree in co-relation 769. Up to 32 conditions per place. [2022-12-13 21:34:24,783 INFO L119 LiptonReduction]: Number of co-enabled transitions 57408 [2022-12-13 21:34:31,022 INFO L134 LiptonReduction]: Checked pairs total: 115287 [2022-12-13 21:34:31,022 INFO L136 LiptonReduction]: Total number of compositions: 267 [2022-12-13 21:34:31,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:34:31,024 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;@5c1a72de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:34:31,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 21:34:31,034 INFO L130 PetriNetUnfolder]: 6/64 cut-off events. [2022-12-13 21:34:31,034 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 21:34:31,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:34:31,035 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:34:31,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 21:34:31,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:31,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1061871899, now seen corresponding path program 1 times [2022-12-13 21:34:31,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:34:31,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426321010] [2022-12-13 21:34:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:31,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:34:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:34:31,132 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 21:34:31,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:34:31,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426321010] [2022-12-13 21:34:31,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426321010] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:34:31,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:34:31,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:34:31,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960672553] [2022-12-13 21:34:31,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:34:31,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:34:31,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:34:31,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:34:31,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:34:31,175 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 607 [2022-12-13 21:34:31,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 116 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 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 21:34:31,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:34:31,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 607 [2022-12-13 21:34:31,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:35:52,626 INFO L130 PetriNetUnfolder]: 829227/1105471 cut-off events. [2022-12-13 21:35:52,626 INFO L131 PetriNetUnfolder]: For 48390/48390 co-relation queries the response was YES. [2022-12-13 21:35:54,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2178830 conditions, 1105471 events. 829227/1105471 cut-off events. For 48390/48390 co-relation queries the response was YES. Maximal size of possible extension queue 22074. Compared 8426201 event pairs, 578080 based on Foata normal form. 86784/1036374 useless extension candidates. Maximal degree in co-relation 344772. Up to 1051588 conditions per place. [2022-12-13 21:35:57,542 INFO L137 encePairwiseOnDemand]: 580/607 looper letters, 82 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2022-12-13 21:35:57,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 100 transitions, 416 flow [2022-12-13 21:35:57,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:35:57,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:35:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 991 transitions. [2022-12-13 21:35:57,558 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5442064799560681 [2022-12-13 21:35:57,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 991 transitions. [2022-12-13 21:35:57,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 991 transitions. [2022-12-13 21:35:57,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:35:57,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 991 transitions. [2022-12-13 21:35:57,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 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 21:35:57,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 607.0) internal successors, (2428), 4 states have internal predecessors, (2428), 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 21:35:57,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 607.0) internal successors, (2428), 4 states have internal predecessors, (2428), 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 21:35:57,583 INFO L175 Difference]: Start difference. First operand has 89 places, 116 transitions, 280 flow. Second operand 3 states and 991 transitions. [2022-12-13 21:35:57,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 100 transitions, 416 flow [2022-12-13 21:35:57,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 100 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:35:57,635 INFO L231 Difference]: Finished difference. Result has 91 places, 92 transitions, 242 flow [2022-12-13 21:35:57,637 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=607, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=91, PETRI_TRANSITIONS=92} [2022-12-13 21:35:57,640 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 2 predicate places. [2022-12-13 21:35:57,640 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 92 transitions, 242 flow [2022-12-13 21:35:57,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 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 21:35:57,641 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:57,641 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 21:35:57,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:35:57,642 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 21:35:57,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:57,642 INFO L85 PathProgramCache]: Analyzing trace with hash -185221465, now seen corresponding path program 1 times [2022-12-13 21:35:57,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:57,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728209785] [2022-12-13 21:35:57,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:57,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:35:57,673 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:35:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:35:57,700 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:35:57,700 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:35:57,701 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-12-13 21:35:57,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-13 21:35:57,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-13 21:35:57,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-12-13 21:35:57,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-12-13 21:35:57,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:35:57,702 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 21:35:57,702 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 21:35:57,703 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 21:35:57,759 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-12-13 21:35:57,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 412 places, 460 transitions, 998 flow [2022-12-13 21:35:58,611 INFO L130 PetriNetUnfolder]: 664/3388 cut-off events. [2022-12-13 21:35:58,611 INFO L131 PetriNetUnfolder]: For 419/479 co-relation queries the response was YES. [2022-12-13 21:35:58,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3839 conditions, 3388 events. 664/3388 cut-off events. For 419/479 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 26090 event pairs, 64 based on Foata normal form. 0/2882 useless extension candidates. Maximal degree in co-relation 2215. Up to 192 conditions per place. [2022-12-13 21:35:58,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 412 places, 460 transitions, 998 flow [2022-12-13 21:35:58,678 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 412 places, 460 transitions, 998 flow [2022-12-13 21:35:58,678 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:35:58,678 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 412 places, 460 transitions, 998 flow [2022-12-13 21:35:58,678 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 412 places, 460 transitions, 998 flow [2022-12-13 21:35:58,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 412 places, 460 transitions, 998 flow [2022-12-13 21:35:59,412 INFO L130 PetriNetUnfolder]: 664/3388 cut-off events. [2022-12-13 21:35:59,412 INFO L131 PetriNetUnfolder]: For 419/479 co-relation queries the response was YES. [2022-12-13 21:35:59,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3839 conditions, 3388 events. 664/3388 cut-off events. For 419/479 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 26090 event pairs, 64 based on Foata normal form. 0/2882 useless extension candidates. Maximal degree in co-relation 2215. Up to 192 conditions per place. [2022-12-13 21:35:59,685 INFO L119 LiptonReduction]: Number of co-enabled transitions 128340 [2022-12-13 21:36:07,625 INFO L134 LiptonReduction]: Checked pairs total: 266298 [2022-12-13 21:36:07,625 INFO L136 LiptonReduction]: Total number of compositions: 351 [2022-12-13 21:36:07,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:36:07,627 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;@5c1a72de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:36:07,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-13 21:36:07,631 INFO L130 PetriNetUnfolder]: 7/57 cut-off events. [2022-12-13 21:36:07,631 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 21:36:07,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:36:07,631 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:07,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:36:07,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:07,631 INFO L85 PathProgramCache]: Analyzing trace with hash 140347400, now seen corresponding path program 1 times [2022-12-13 21:36:07,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:07,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414480171] [2022-12-13 21:36:07,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:07,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:07,681 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 21:36:07,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:07,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414480171] [2022-12-13 21:36:07,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414480171] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:36:07,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:36:07,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:36:07,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909013361] [2022-12-13 21:36:07,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:36:07,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:36:07,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:07,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:36:07,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:36:07,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 395 out of 811 [2022-12-13 21:36:07,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 158 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 397.6666666666667) internal successors, (1193), 3 states have internal predecessors, (1193), 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 21:36:07,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:36:07,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 395 of 811 [2022-12-13 21:36:07,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand