./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a 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_44ce6134-4a97-4e39-8ab6-aed85a3b751c/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ce6134-4a97-4e39-8ab6-aed85a3b751c/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ce6134-4a97-4e39-8ab6-aed85a3b751c/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ce6134-4a97-4e39-8ab6-aed85a3b751c/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ce6134-4a97-4e39-8ab6-aed85a3b751c/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ce6134-4a97-4e39-8ab6-aed85a3b751c/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2305533b08f16ed55fe1768852f1afe1d6f847d5ca6bb0bf597caf3ef6acd368 --- 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-5e519f3 [2022-11-02 20:35:41,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:35:41,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:35:41,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:35:41,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:35:41,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:35:41,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:35:41,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:35:41,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:35:41,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:35:41,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:35:41,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:35:41,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:35:41,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:35:41,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:35:41,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:35:41,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:35:41,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:35:41,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:35:41,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:35:41,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:35:41,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:35:41,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:35:41,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:35:41,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:35:41,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:35:41,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:35:41,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:35:41,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:35:41,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:35:41,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:35:41,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:35:41,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:35:41,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:35:41,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:35:41,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:35:41,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:35:41,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:35:41,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:35:41,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:35:41,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:35:41,698 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ce6134-4a97-4e39-8ab6-aed85a3b751c/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:35:41,755 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:35:41,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:35:41,757 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:35:41,757 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:35:41,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:35:41,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:35:41,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:35:41,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:35:41,760 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:35:41,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:35:41,762 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:35:41,763 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:35:41,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:35:41,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:35:41,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:35:41,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:35:41,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:35:41,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:35:41,765 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:35:41,765 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:35:41,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:35:41,766 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:35:41,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:35:41,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:35:41,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:35:41,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:35:41,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:35:41,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:35:41,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:35:41,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:35:41,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:35:41,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:35:41,769 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:35:41,770 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:35:41,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:35:41,770 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_44ce6134-4a97-4e39-8ab6-aed85a3b751c/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ce6134-4a97-4e39-8ab6-aed85a3b751c/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2305533b08f16ed55fe1768852f1afe1d6f847d5ca6bb0bf597caf3ef6acd368 [2022-11-02 20:35:42,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:35:42,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:35:42,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:35:42,204 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:35:42,205 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:35:42,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ce6134-4a97-4e39-8ab6-aed85a3b751c/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2022-11-02 20:35:42,299 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ce6134-4a97-4e39-8ab6-aed85a3b751c/bin/uautomizer-Dbtcem3rbc/data/4e8724697/5d6a521d217840ed836503bec421c7f3/FLAGb4713e53a [2022-11-02 20:35:43,124 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:35:43,125 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ce6134-4a97-4e39-8ab6-aed85a3b751c/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2022-11-02 20:35:43,149 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ce6134-4a97-4e39-8ab6-aed85a3b751c/bin/uautomizer-Dbtcem3rbc/data/4e8724697/5d6a521d217840ed836503bec421c7f3/FLAGb4713e53a [2022-11-02 20:35:43,337 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ce6134-4a97-4e39-8ab6-aed85a3b751c/bin/uautomizer-Dbtcem3rbc/data/4e8724697/5d6a521d217840ed836503bec421c7f3 [2022-11-02 20:35:43,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:35:43,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:35:43,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:35:43,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:35:43,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:35:43,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:35:43" (1/1) ... [2022-11-02 20:35:43,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbec37c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:43, skipping insertion in model container [2022-11-02 20:35:43,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:35:43" (1/1) ... [2022-11-02 20:35:43,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:35:43,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:35:44,049 WARN L230 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_44ce6134-4a97-4e39-8ab6-aed85a3b751c/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i[47038,47051] [2022-11-02 20:35:44,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:35:44,130 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:35:44,197 WARN L230 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_44ce6134-4a97-4e39-8ab6-aed85a3b751c/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i[47038,47051] [2022-11-02 20:35:44,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:35:44,292 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:35:44,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:44 WrapperNode [2022-11-02 20:35:44,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:35:44,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:35:44,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:35:44,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:35:44,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:44" (1/1) ... [2022-11-02 20:35:44,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:44" (1/1) ... [2022-11-02 20:35:44,428 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 261 [2022-11-02 20:35:44,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:35:44,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:35:44,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:35:44,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:35:44,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:44" (1/1) ... [2022-11-02 20:35:44,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:44" (1/1) ... [2022-11-02 20:35:44,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:44" (1/1) ... [2022-11-02 20:35:44,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:44" (1/1) ... [2022-11-02 20:35:44,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:44" (1/1) ... [2022-11-02 20:35:44,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:44" (1/1) ... [2022-11-02 20:35:44,493 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:44" (1/1) ... [2022-11-02 20:35:44,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:44" (1/1) ... [2022-11-02 20:35:44,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:35:44,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:35:44,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:35:44,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:35:44,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:44" (1/1) ... [2022-11-02 20:35:44,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:35:44,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ce6134-4a97-4e39-8ab6-aed85a3b751c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:35:44,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ce6134-4a97-4e39-8ab6-aed85a3b751c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:35:44,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ce6134-4a97-4e39-8ab6-aed85a3b751c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:35:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:35:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:35:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:35:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:35:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:35:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:35:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-02 20:35:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-02 20:35:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:35:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:35:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:35:44,642 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:35:44,882 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:35:44,929 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:35:45,555 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:35:45,568 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:35:45,569 INFO L300 CfgBuilder]: Removed 22 assume(true) statements. [2022-11-02 20:35:45,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:35:45 BoogieIcfgContainer [2022-11-02 20:35:45,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:35:45,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:35:45,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:35:45,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:35:45,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:35:43" (1/3) ... [2022-11-02 20:35:45,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f5bca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:35:45, skipping insertion in model container [2022-11-02 20:35:45,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:44" (2/3) ... [2022-11-02 20:35:45,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f5bca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:35:45, skipping insertion in model container [2022-11-02 20:35:45,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:35:45" (3/3) ... [2022-11-02 20:35:45,586 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2022-11-02 20:35:45,598 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:35:45,611 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:35:45,612 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-02 20:35:45,612 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:35:45,785 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 20:35:45,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 275 transitions, 558 flow [2022-11-02 20:35:46,078 INFO L130 PetriNetUnfolder]: 42/386 cut-off events. [2022-11-02 20:35:46,079 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:35:46,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 386 events. 42/386 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1592 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 207. Up to 8 conditions per place. [2022-11-02 20:35:46,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 275 transitions, 558 flow [2022-11-02 20:35:46,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 275 transitions, 558 flow [2022-11-02 20:35:46,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:35:46,128 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;@399b54b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:35:46,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-02 20:35:46,168 INFO L130 PetriNetUnfolder]: 12/145 cut-off events. [2022-11-02 20:35:46,169 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:35:46,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:46,170 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:46,171 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-02 20:35:46,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:46,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1889070328, now seen corresponding path program 1 times [2022-11-02 20:35:46,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:46,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420093736] [2022-11-02 20:35:46,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:46,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:46,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:46,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:46,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420093736] [2022-11-02 20:35:46,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420093736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:46,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:46,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:35:46,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421786211] [2022-11-02 20:35:46,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:46,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:35:46,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:46,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:35:46,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:35:46,645 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 275 [2022-11-02 20:35:46,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 275 transitions, 558 flow. Second operand has 2 states, 2 states have (on average 248.0) internal successors, (496), 2 states have internal predecessors, (496), 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) [2022-11-02 20:35:46,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:46,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 275 [2022-11-02 20:35:46,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:46,766 INFO L130 PetriNetUnfolder]: 5/346 cut-off events. [2022-11-02 20:35:46,767 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:35:46,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 346 events. 5/346 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1123 event pairs, 0 based on Foata normal form. 37/355 useless extension candidates. Maximal degree in co-relation 183. Up to 4 conditions per place. [2022-11-02 20:35:46,773 INFO L137 encePairwiseOnDemand]: 251/275 looper letters, 2 selfloop transitions, 0 changer transitions 0/249 dead transitions. [2022-11-02 20:35:46,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 249 transitions, 510 flow [2022-11-02 20:35:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:35:46,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:35:46,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 520 transitions. [2022-11-02 20:35:46,802 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9454545454545454 [2022-11-02 20:35:46,803 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 520 transitions. [2022-11-02 20:35:46,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 520 transitions. [2022-11-02 20:35:46,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:46,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 520 transitions. [2022-11-02 20:35:46,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 260.0) internal successors, (520), 2 states have internal predecessors, (520), 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) [2022-11-02 20:35:46,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 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) [2022-11-02 20:35:46,827 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 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) [2022-11-02 20:35:46,830 INFO L175 Difference]: Start difference. First operand has 250 places, 275 transitions, 558 flow. Second operand 2 states and 520 transitions. [2022-11-02 20:35:46,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 249 transitions, 510 flow [2022-11-02 20:35:46,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 249 transitions, 510 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:35:46,844 INFO L231 Difference]: Finished difference. Result has 249 places, 249 transitions, 506 flow [2022-11-02 20:35:46,847 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=506, PETRI_PLACES=249, PETRI_TRANSITIONS=249} [2022-11-02 20:35:46,852 INFO L287 CegarLoopForPetriNet]: 250 programPoint places, -1 predicate places. [2022-11-02 20:35:46,852 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 249 transitions, 506 flow [2022-11-02 20:35:46,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 248.0) internal successors, (496), 2 states have internal predecessors, (496), 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) [2022-11-02 20:35:46,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:46,853 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:46,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:35:46,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-02 20:35:46,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:46,855 INFO L85 PathProgramCache]: Analyzing trace with hash 422117856, now seen corresponding path program 1 times [2022-11-02 20:35:46,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:46,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942428442] [2022-11-02 20:35:46,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:46,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:47,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:47,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942428442] [2022-11-02 20:35:47,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942428442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:47,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:47,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:35:47,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936586424] [2022-11-02 20:35:47,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:47,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:35:47,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:47,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:35:47,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:35:47,136 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 275 [2022-11-02 20:35:47,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 249 transitions, 506 flow. Second operand has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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) [2022-11-02 20:35:47,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:47,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 275 [2022-11-02 20:35:47,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:47,252 INFO L130 PetriNetUnfolder]: 3/268 cut-off events. [2022-11-02 20:35:47,252 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:35:47,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 268 events. 3/268 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 542 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 283. Up to 7 conditions per place. [2022-11-02 20:35:47,257 INFO L137 encePairwiseOnDemand]: 272/275 looper letters, 9 selfloop transitions, 2 changer transitions 0/251 dead transitions. [2022-11-02 20:35:47,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 251 transitions, 532 flow [2022-11-02 20:35:47,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:35:47,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:35:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 732 transitions. [2022-11-02 20:35:47,262 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8872727272727273 [2022-11-02 20:35:47,263 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 732 transitions. [2022-11-02 20:35:47,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 732 transitions. [2022-11-02 20:35:47,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:47,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 732 transitions. [2022-11-02 20:35:47,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 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) [2022-11-02 20:35:47,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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) [2022-11-02 20:35:47,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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) [2022-11-02 20:35:47,275 INFO L175 Difference]: Start difference. First operand has 249 places, 249 transitions, 506 flow. Second operand 3 states and 732 transitions. [2022-11-02 20:35:47,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 251 transitions, 532 flow [2022-11-02 20:35:47,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 251 transitions, 532 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:35:47,292 INFO L231 Difference]: Finished difference. Result has 252 places, 249 transitions, 514 flow [2022-11-02 20:35:47,293 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=252, PETRI_TRANSITIONS=249} [2022-11-02 20:35:47,294 INFO L287 CegarLoopForPetriNet]: 250 programPoint places, 2 predicate places. [2022-11-02 20:35:47,294 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 249 transitions, 514 flow [2022-11-02 20:35:47,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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) [2022-11-02 20:35:47,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:47,297 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:47,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:35:47,298 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-02 20:35:47,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:47,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1272795204, now seen corresponding path program 1 times [2022-11-02 20:35:47,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:47,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002897511] [2022-11-02 20:35:47,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:47,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:35:47,400 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:35:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:35:47,486 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:35:47,486 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:35:47,489 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-02 20:35:47,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-02 20:35:47,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-02 20:35:47,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-02 20:35:47,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-02 20:35:47,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-02 20:35:47,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-02 20:35:47,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-02 20:35:47,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-02 20:35:47,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-02 20:35:47,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-02 20:35:47,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-02 20:35:47,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-02 20:35:47,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-02 20:35:47,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-02 20:35:47,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-02 20:35:47,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-02 20:35:47,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:35:47,507 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:35:47,512 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:35:47,513 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:35:47,621 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:35:47,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 368 transitions, 754 flow [2022-11-02 20:35:47,814 INFO L130 PetriNetUnfolder]: 71/621 cut-off events. [2022-11-02 20:35:47,815 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 20:35:47,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 621 events. 71/621 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3086 event pairs, 0 based on Foata normal form. 0/517 useless extension candidates. Maximal degree in co-relation 388. Up to 12 conditions per place. [2022-11-02 20:35:47,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 368 transitions, 754 flow [2022-11-02 20:35:47,844 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 332 places, 368 transitions, 754 flow [2022-11-02 20:35:47,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:35:47,848 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;@399b54b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:35:47,848 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-02 20:35:47,868 INFO L130 PetriNetUnfolder]: 12/145 cut-off events. [2022-11-02 20:35:47,868 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:35:47,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:47,868 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:47,869 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 20:35:47,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:47,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1902159620, now seen corresponding path program 1 times [2022-11-02 20:35:47,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:47,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987398336] [2022-11-02 20:35:47,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:47,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:47,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:47,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:47,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987398336] [2022-11-02 20:35:47,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987398336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:47,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:47,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:35:47,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86738584] [2022-11-02 20:35:47,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:47,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:35:47,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:47,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:35:47,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:35:47,961 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 368 [2022-11-02 20:35:47,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 368 transitions, 754 flow. Second operand has 2 states, 2 states have (on average 326.5) internal successors, (653), 2 states have internal predecessors, (653), 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) [2022-11-02 20:35:47,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:47,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 368 [2022-11-02 20:35:47,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:48,170 INFO L130 PetriNetUnfolder]: 9/554 cut-off events. [2022-11-02 20:35:48,170 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-02 20:35:48,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 554 events. 9/554 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2449 event pairs, 0 based on Foata normal form. 88/595 useless extension candidates. Maximal degree in co-relation 350. Up to 7 conditions per place. [2022-11-02 20:35:48,181 INFO L137 encePairwiseOnDemand]: 333/368 looper letters, 4 selfloop transitions, 0 changer transitions 0/330 dead transitions. [2022-11-02 20:35:48,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 330 transitions, 686 flow [2022-11-02 20:35:48,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:35:48,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:35:48,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 691 transitions. [2022-11-02 20:35:48,186 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.938858695652174 [2022-11-02 20:35:48,186 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 691 transitions. [2022-11-02 20:35:48,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 691 transitions. [2022-11-02 20:35:48,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:48,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 691 transitions. [2022-11-02 20:35:48,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 345.5) internal successors, (691), 2 states have internal predecessors, (691), 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) [2022-11-02 20:35:48,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 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) [2022-11-02 20:35:48,193 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 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) [2022-11-02 20:35:48,193 INFO L175 Difference]: Start difference. First operand has 332 places, 368 transitions, 754 flow. Second operand 2 states and 691 transitions. [2022-11-02 20:35:48,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 330 transitions, 686 flow [2022-11-02 20:35:48,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 330 transitions, 686 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:35:48,203 INFO L231 Difference]: Finished difference. Result has 330 places, 330 transitions, 678 flow [2022-11-02 20:35:48,208 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=678, PETRI_PLACES=330, PETRI_TRANSITIONS=330} [2022-11-02 20:35:48,210 INFO L287 CegarLoopForPetriNet]: 332 programPoint places, -2 predicate places. [2022-11-02 20:35:48,210 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 330 transitions, 678 flow [2022-11-02 20:35:48,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 326.5) internal successors, (653), 2 states have internal predecessors, (653), 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) [2022-11-02 20:35:48,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:48,211 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:48,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:35:48,212 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 20:35:48,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:48,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1054729603, now seen corresponding path program 1 times [2022-11-02 20:35:48,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:48,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785693668] [2022-11-02 20:35:48,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:48,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:48,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:48,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:48,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785693668] [2022-11-02 20:35:48,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785693668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:48,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:48,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:35:48,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934194428] [2022-11-02 20:35:48,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:48,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:35:48,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:48,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:35:48,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:35:48,304 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 368 [2022-11-02 20:35:48,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 330 transitions, 678 flow. Second operand has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 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) [2022-11-02 20:35:48,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:48,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 368 [2022-11-02 20:35:48,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:48,490 INFO L130 PetriNetUnfolder]: 7/476 cut-off events. [2022-11-02 20:35:48,490 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-02 20:35:48,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 476 events. 7/476 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1819 event pairs, 0 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 507. Up to 16 conditions per place. [2022-11-02 20:35:48,503 INFO L137 encePairwiseOnDemand]: 365/368 looper letters, 13 selfloop transitions, 2 changer transitions 0/334 dead transitions. [2022-11-02 20:35:48,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 334 transitions, 716 flow [2022-11-02 20:35:48,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:35:48,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:35:48,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 973 transitions. [2022-11-02 20:35:48,507 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8813405797101449 [2022-11-02 20:35:48,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 973 transitions. [2022-11-02 20:35:48,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 973 transitions. [2022-11-02 20:35:48,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:48,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 973 transitions. [2022-11-02 20:35:48,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 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) [2022-11-02 20:35:48,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 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) [2022-11-02 20:35:48,516 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 368.0) internal successors, (1472), 4 states have internal predecessors, (1472), 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) [2022-11-02 20:35:48,516 INFO L175 Difference]: Start difference. First operand has 330 places, 330 transitions, 678 flow. Second operand 3 states and 973 transitions. [2022-11-02 20:35:48,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 334 transitions, 716 flow [2022-11-02 20:35:48,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 334 transitions, 716 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:35:48,527 INFO L231 Difference]: Finished difference. Result has 333 places, 331 transitions, 690 flow [2022-11-02 20:35:48,528 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=690, PETRI_PLACES=333, PETRI_TRANSITIONS=331} [2022-11-02 20:35:48,530 INFO L287 CegarLoopForPetriNet]: 332 programPoint places, 1 predicate places. [2022-11-02 20:35:48,530 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 331 transitions, 690 flow [2022-11-02 20:35:48,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 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) [2022-11-02 20:35:48,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:48,532 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:48,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:35:48,533 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-02 20:35:48,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:48,533 INFO L85 PathProgramCache]: Analyzing trace with hash 678771251, now seen corresponding path program 1 times [2022-11-02 20:35:48,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:48,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937333773] [2022-11-02 20:35:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:48,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:49,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:49,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:49,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937333773] [2022-11-02 20:35:49,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937333773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:49,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:49,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:35:49,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091525793] [2022-11-02 20:35:49,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:49,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:35:49,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:49,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:35:49,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:35:49,211 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 368 [2022-11-02 20:35:49,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 331 transitions, 690 flow. Second operand has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 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) [2022-11-02 20:35:49,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:49,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 368 [2022-11-02 20:35:49,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand