./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-30.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b 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_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-30.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN --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 8d7df89eaaa05ee1c4077455abbd501c07d86257ca2c037ce71ae27b3838effb --- 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-6b4ec56 [2022-11-20 11:26:52,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:26:52,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:26:52,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:26:52,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:26:52,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:26:52,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:26:52,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:26:52,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:26:52,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:26:52,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:26:52,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:26:52,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:26:52,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:26:52,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:26:52,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:26:52,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:26:52,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:26:52,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:26:52,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:26:52,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:26:52,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:26:52,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:26:52,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:26:52,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:26:52,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:26:52,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:26:52,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:26:52,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:26:52,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:26:52,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:26:52,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:26:52,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:26:52,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:26:52,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:26:52,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:26:52,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:26:52,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:26:52,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:26:52,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:26:52,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:26:52,662 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 11:26:52,687 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:26:52,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:26:52,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:26:52,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:26:52,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:26:52,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:26:52,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:26:52,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:26:52,690 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:26:52,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:26:52,691 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:26:52,691 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:26:52,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:26:52,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:26:52,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:26:52,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:26:52,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:26:52,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:26:52,693 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 11:26:52,694 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:26:52,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:26:52,694 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:26:52,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:26:52,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:26:52,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:26:52,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:26:52,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:26:52,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:26:52,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:26:52,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:26:52,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:26:52,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:26:52,697 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:26:52,697 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:26:52,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:26:52,698 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_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d7df89eaaa05ee1c4077455abbd501c07d86257ca2c037ce71ae27b3838effb [2022-11-20 11:26:53,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:26:53,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:26:53,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:26:53,057 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:26:53,057 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:26:53,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-30.i [2022-11-20 11:26:56,625 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:26:56,921 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:26:56,921 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/sv-benchmarks/c/pthread-deagle/reorder_c11_bad-30.i [2022-11-20 11:26:56,947 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/data/fdb841c24/ce9768b94030464d826549bef6a6f841/FLAGcc649a9cf [2022-11-20 11:26:56,972 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/data/fdb841c24/ce9768b94030464d826549bef6a6f841 [2022-11-20 11:26:56,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:26:56,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:26:56,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:26:56,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:26:56,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:26:56,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:26:56" (1/1) ... [2022-11-20 11:26:56,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed71602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:56, skipping insertion in model container [2022-11-20 11:26:56,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:26:56" (1/1) ... [2022-11-20 11:26:57,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:26:57,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:26:57,532 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_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/sv-benchmarks/c/pthread-deagle/reorder_c11_bad-30.i[30190,30203] [2022-11-20 11:26:57,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:26:57,586 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:26:57,651 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_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/sv-benchmarks/c/pthread-deagle/reorder_c11_bad-30.i[30190,30203] [2022-11-20 11:26:57,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:26:57,716 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:26:57,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:57 WrapperNode [2022-11-20 11:26:57,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:26:57,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:26:57,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:26:57,720 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:26:57,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:57" (1/1) ... [2022-11-20 11:26:57,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:57" (1/1) ... [2022-11-20 11:26:57,813 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 137 [2022-11-20 11:26:57,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:26:57,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:26:57,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:26:57,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:26:57,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:57" (1/1) ... [2022-11-20 11:26:57,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:57" (1/1) ... [2022-11-20 11:26:57,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:57" (1/1) ... [2022-11-20 11:26:57,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:57" (1/1) ... [2022-11-20 11:26:57,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:57" (1/1) ... [2022-11-20 11:26:57,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:57" (1/1) ... [2022-11-20 11:26:57,888 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:57" (1/1) ... [2022-11-20 11:26:57,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:57" (1/1) ... [2022-11-20 11:26:57,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:26:57,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:26:57,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:26:57,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:26:57,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:57" (1/1) ... [2022-11-20 11:26:57,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:26:57,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:26:57,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:26:57,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:26:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:26:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-20 11:26:58,002 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-20 11:26:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:26:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:26:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:26:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:26:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:26:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-20 11:26:58,009 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-20 11:26:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:26:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:26:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:26:58,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:26:58,012 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:26:58,170 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:26:58,173 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:26:58,645 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:26:58,738 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:26:58,738 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 11:26:58,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:26:58 BoogieIcfgContainer [2022-11-20 11:26:58,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:26:58,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:26:58,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:26:58,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:26:58,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:26:56" (1/3) ... [2022-11-20 11:26:58,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e60d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:26:58, skipping insertion in model container [2022-11-20 11:26:58,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:26:57" (2/3) ... [2022-11-20 11:26:58,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e60d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:26:58, skipping insertion in model container [2022-11-20 11:26:58,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:26:58" (3/3) ... [2022-11-20 11:26:58,767 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_bad-30.i [2022-11-20 11:26:58,779 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:26:58,792 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:26:58,792 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-20 11:26:58,793 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:26:58,955 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 11:26:59,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 210 transitions, 442 flow [2022-11-20 11:26:59,314 INFO L130 PetriNetUnfolder]: 30/521 cut-off events. [2022-11-20 11:26:59,314 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-20 11:26:59,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 521 events. 30/521 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2110 event pairs, 0 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 247. Up to 8 conditions per place. [2022-11-20 11:26:59,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 210 transitions, 442 flow [2022-11-20 11:26:59,349 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 210 transitions, 442 flow [2022-11-20 11:26:59,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:26:59,386 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;@98ea20a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:26:59,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-11-20 11:26:59,397 INFO L130 PetriNetUnfolder]: 0/24 cut-off events. [2022-11-20 11:26:59,397 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:26:59,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:26:59,399 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:59,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-20 11:26:59,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:59,410 INFO L85 PathProgramCache]: Analyzing trace with hash 534724535, now seen corresponding path program 1 times [2022-11-20 11:26:59,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:59,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887473604] [2022-11-20 11:26:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:59,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:59,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:59,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887473604] [2022-11-20 11:26:59,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887473604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:59,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:59,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:26:59,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931816660] [2022-11-20 11:26:59,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:59,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:26:59,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:59,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:26:59,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:26:59,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 210 [2022-11-20 11:26:59,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 210 transitions, 442 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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) [2022-11-20 11:26:59,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:26:59,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 210 [2022-11-20 11:26:59,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:00,341 INFO L130 PetriNetUnfolder]: 192/1120 cut-off events. [2022-11-20 11:27:00,342 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-11-20 11:27:00,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 1120 events. 192/1120 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 6233 event pairs, 168 based on Foata normal form. 114/1048 useless extension candidates. Maximal degree in co-relation 1286. Up to 521 conditions per place. [2022-11-20 11:27:00,357 INFO L137 encePairwiseOnDemand]: 200/210 looper letters, 68 selfloop transitions, 2 changer transitions 0/201 dead transitions. [2022-11-20 11:27:00,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 201 transitions, 564 flow [2022-11-20 11:27:00,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:27:00,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:27:00,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2022-11-20 11:27:00,375 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7476190476190476 [2022-11-20 11:27:00,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2022-11-20 11:27:00,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2022-11-20 11:27:00,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:00,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2022-11-20 11:27:00,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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) [2022-11-20 11:27:00,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-11-20 11:27:00,396 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-11-20 11:27:00,398 INFO L175 Difference]: Start difference. First operand has 203 places, 210 transitions, 442 flow. Second operand 3 states and 471 transitions. [2022-11-20 11:27:00,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 201 transitions, 564 flow [2022-11-20 11:27:00,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 201 transitions, 564 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:27:00,410 INFO L231 Difference]: Finished difference. Result has 201 places, 201 transitions, 428 flow [2022-11-20 11:27:00,413 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=201, PETRI_TRANSITIONS=201} [2022-11-20 11:27:00,418 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, -2 predicate places. [2022-11-20 11:27:00,418 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 201 transitions, 428 flow [2022-11-20 11:27:00,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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) [2022-11-20 11:27:00,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:00,420 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:00,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:27:00,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-20 11:27:00,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:00,421 INFO L85 PathProgramCache]: Analyzing trace with hash -54656402, now seen corresponding path program 1 times [2022-11-20 11:27:00,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:00,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442301865] [2022-11-20 11:27:00,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:00,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:00,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:00,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:00,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442301865] [2022-11-20 11:27:00,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442301865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:00,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:00,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:27:00,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147182520] [2022-11-20 11:27:00,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:00,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:27:00,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:00,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:27:00,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:27:00,503 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 210 [2022-11-20 11:27:00,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 201 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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) [2022-11-20 11:27:00,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:00,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 210 [2022-11-20 11:27:00,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:00,891 INFO L130 PetriNetUnfolder]: 156/1011 cut-off events. [2022-11-20 11:27:00,891 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-20 11:27:00,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1457 conditions, 1011 events. 156/1011 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5521 event pairs, 78 based on Foata normal form. 0/898 useless extension candidates. Maximal degree in co-relation 1422. Up to 243 conditions per place. [2022-11-20 11:27:00,903 INFO L137 encePairwiseOnDemand]: 187/210 looper letters, 46 selfloop transitions, 11 changer transitions 0/191 dead transitions. [2022-11-20 11:27:00,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 191 transitions, 522 flow [2022-11-20 11:27:00,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:27:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:27:00,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2022-11-20 11:27:00,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7476190476190476 [2022-11-20 11:27:00,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2022-11-20 11:27:00,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2022-11-20 11:27:00,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:00,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2022-11-20 11:27:00,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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) [2022-11-20 11:27:00,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-11-20 11:27:00,918 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-11-20 11:27:00,919 INFO L175 Difference]: Start difference. First operand has 201 places, 201 transitions, 428 flow. Second operand 3 states and 471 transitions. [2022-11-20 11:27:00,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 191 transitions, 522 flow [2022-11-20 11:27:00,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 191 transitions, 518 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:27:00,929 INFO L231 Difference]: Finished difference. Result has 189 places, 189 transitions, 422 flow [2022-11-20 11:27:00,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=422, PETRI_PLACES=189, PETRI_TRANSITIONS=189} [2022-11-20 11:27:00,931 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, -14 predicate places. [2022-11-20 11:27:00,932 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 189 transitions, 422 flow [2022-11-20 11:27:00,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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) [2022-11-20 11:27:00,933 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:00,934 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:00,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:27:00,935 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-20 11:27:00,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:00,935 INFO L85 PathProgramCache]: Analyzing trace with hash -2045341073, now seen corresponding path program 1 times [2022-11-20 11:27:00,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:00,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428948408] [2022-11-20 11:27:00,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:00,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:01,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:01,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:01,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428948408] [2022-11-20 11:27:01,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428948408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:01,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:01,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:27:01,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234163545] [2022-11-20 11:27:01,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:01,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:27:01,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:01,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:27:01,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:27:01,138 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 210 [2022-11-20 11:27:01,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 189 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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) [2022-11-20 11:27:01,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:01,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 210 [2022-11-20 11:27:01,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:01,414 INFO L130 PetriNetUnfolder]: 99/707 cut-off events. [2022-11-20 11:27:01,415 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-20 11:27:01,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 707 events. 99/707 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2625 event pairs, 52 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 819. Up to 160 conditions per place. [2022-11-20 11:27:01,423 INFO L137 encePairwiseOnDemand]: 198/210 looper letters, 61 selfloop transitions, 8 changer transitions 9/215 dead transitions. [2022-11-20 11:27:01,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 215 transitions, 622 flow [2022-11-20 11:27:01,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:27:01,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:27:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2022-11-20 11:27:01,426 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-11-20 11:27:01,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2022-11-20 11:27:01,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2022-11-20 11:27:01,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:01,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2022-11-20 11:27:01,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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) [2022-11-20 11:27:01,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-11-20 11:27:01,432 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-11-20 11:27:01,433 INFO L175 Difference]: Start difference. First operand has 189 places, 189 transitions, 422 flow. Second operand 3 states and 546 transitions. [2022-11-20 11:27:01,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 215 transitions, 622 flow [2022-11-20 11:27:01,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 215 transitions, 600 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:27:01,441 INFO L231 Difference]: Finished difference. Result has 190 places, 182 transitions, 418 flow [2022-11-20 11:27:01,442 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=418, PETRI_PLACES=190, PETRI_TRANSITIONS=182} [2022-11-20 11:27:01,443 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, -13 predicate places. [2022-11-20 11:27:01,443 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 182 transitions, 418 flow [2022-11-20 11:27:01,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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) [2022-11-20 11:27:01,444 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:01,444 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:01,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:27:01,445 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-20 11:27:01,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:01,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1824961802, now seen corresponding path program 1 times [2022-11-20 11:27:01,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:01,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90043273] [2022-11-20 11:27:01,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:01,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:01,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:01,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:01,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90043273] [2022-11-20 11:27:01,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90043273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:01,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:01,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:27:01,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406886272] [2022-11-20 11:27:01,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:01,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:27:01,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:01,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:27:01,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:27:01,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 210 [2022-11-20 11:27:01,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 182 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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) [2022-11-20 11:27:01,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:01,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 210 [2022-11-20 11:27:01,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:01,808 INFO L130 PetriNetUnfolder]: 113/714 cut-off events. [2022-11-20 11:27:01,808 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-11-20 11:27:01,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 714 events. 113/714 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2644 event pairs, 99 based on Foata normal form. 0/656 useless extension candidates. Maximal degree in co-relation 869. Up to 302 conditions per place. [2022-11-20 11:27:01,816 INFO L137 encePairwiseOnDemand]: 207/210 looper letters, 57 selfloop transitions, 2 changer transitions 0/183 dead transitions. [2022-11-20 11:27:01,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 183 transitions, 538 flow [2022-11-20 11:27:01,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:27:01,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:27:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2022-11-20 11:27:01,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.719047619047619 [2022-11-20 11:27:01,819 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2022-11-20 11:27:01,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2022-11-20 11:27:01,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:01,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2022-11-20 11:27:01,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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) [2022-11-20 11:27:01,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-11-20 11:27:01,824 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-11-20 11:27:01,825 INFO L175 Difference]: Start difference. First operand has 190 places, 182 transitions, 418 flow. Second operand 3 states and 453 transitions. [2022-11-20 11:27:01,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 183 transitions, 538 flow [2022-11-20 11:27:01,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 183 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:27:01,831 INFO L231 Difference]: Finished difference. Result has 182 places, 181 transitions, 412 flow [2022-11-20 11:27:01,832 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=182, PETRI_TRANSITIONS=181} [2022-11-20 11:27:01,833 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, -21 predicate places. [2022-11-20 11:27:01,833 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 181 transitions, 412 flow [2022-11-20 11:27:01,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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) [2022-11-20 11:27:01,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:01,834 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 11:27:01,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:27:01,835 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-20 11:27:01,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:01,835 INFO L85 PathProgramCache]: Analyzing trace with hash -474470198, now seen corresponding path program 1 times [2022-11-20 11:27:01,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:01,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138115847] [2022-11-20 11:27:01,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:01,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:01,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:01,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:01,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138115847] [2022-11-20 11:27:01,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138115847] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:27:01,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399207933] [2022-11-20 11:27:01,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:01,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:27:01,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:27:01,978 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:27:01,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:27:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:02,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:27:02,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:27:02,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:27:02,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:27:02,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399207933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:02,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:27:02,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-20 11:27:02,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217520692] [2022-11-20 11:27:02,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:02,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:27:02,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:02,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:27:02,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:27:02,178 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 210 [2022-11-20 11:27:02,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 181 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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) [2022-11-20 11:27:02,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:02,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 210 [2022-11-20 11:27:02,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:02,443 INFO L130 PetriNetUnfolder]: 111/709 cut-off events. [2022-11-20 11:27:02,444 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-11-20 11:27:02,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1084 conditions, 709 events. 111/709 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2622 event pairs, 97 based on Foata normal form. 0/654 useless extension candidates. Maximal degree in co-relation 856. Up to 297 conditions per place. [2022-11-20 11:27:02,451 INFO L137 encePairwiseOnDemand]: 207/210 looper letters, 56 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2022-11-20 11:27:02,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 182 transitions, 530 flow [2022-11-20 11:27:02,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:27:02,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:27:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2022-11-20 11:27:02,454 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7174603174603175 [2022-11-20 11:27:02,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2022-11-20 11:27:02,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2022-11-20 11:27:02,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:02,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2022-11-20 11:27:02,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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) [2022-11-20 11:27:02,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-11-20 11:27:02,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-11-20 11:27:02,460 INFO L175 Difference]: Start difference. First operand has 182 places, 181 transitions, 412 flow. Second operand 3 states and 452 transitions. [2022-11-20 11:27:02,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 182 transitions, 530 flow [2022-11-20 11:27:02,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 182 transitions, 526 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:27:02,466 INFO L231 Difference]: Finished difference. Result has 181 places, 180 transitions, 410 flow [2022-11-20 11:27:02,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=410, PETRI_PLACES=181, PETRI_TRANSITIONS=180} [2022-11-20 11:27:02,468 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, -22 predicate places. [2022-11-20 11:27:02,468 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 180 transitions, 410 flow [2022-11-20 11:27:02,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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) [2022-11-20 11:27:02,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:02,469 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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] [2022-11-20 11:27:02,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:27:02,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:27:02,677 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-20 11:27:02,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:02,678 INFO L85 PathProgramCache]: Analyzing trace with hash -252428761, now seen corresponding path program 1 times [2022-11-20 11:27:02,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:02,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150461165] [2022-11-20 11:27:02,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:02,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:27:02,729 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:27:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:27:02,801 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:27:02,801 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:27:02,803 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2022-11-20 11:27:02,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2022-11-20 11:27:02,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2022-11-20 11:27:02,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2022-11-20 11:27:02,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2022-11-20 11:27:02,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2022-11-20 11:27:02,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2022-11-20 11:27:02,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2022-11-20 11:27:02,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2022-11-20 11:27:02,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2022-11-20 11:27:02,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2022-11-20 11:27:02,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2022-11-20 11:27:02,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2022-11-20 11:27:02,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2022-11-20 11:27:02,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2022-11-20 11:27:02,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2022-11-20 11:27:02,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2022-11-20 11:27:02,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2022-11-20 11:27:02,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2022-11-20 11:27:02,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2022-11-20 11:27:02,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2022-11-20 11:27:02,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2022-11-20 11:27:02,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2022-11-20 11:27:02,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2022-11-20 11:27:02,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2022-11-20 11:27:02,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2022-11-20 11:27:02,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2022-11-20 11:27:02,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2022-11-20 11:27:02,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2022-11-20 11:27:02,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 36 remaining) [2022-11-20 11:27:02,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2022-11-20 11:27:02,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2022-11-20 11:27:02,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2022-11-20 11:27:02,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2022-11-20 11:27:02,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2022-11-20 11:27:02,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2022-11-20 11:27:02,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:27:02,824 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-20 11:27:02,827 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:27:02,828 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 11:27:02,901 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-20 11:27:02,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 260 transitions, 568 flow [2022-11-20 11:27:03,261 INFO L130 PetriNetUnfolder]: 125/1739 cut-off events. [2022-11-20 11:27:03,261 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-20 11:27:03,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1836 conditions, 1739 events. 125/1739 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 10322 event pairs, 2 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 980. Up to 32 conditions per place. [2022-11-20 11:27:03,281 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 260 transitions, 568 flow [2022-11-20 11:27:03,298 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 260 transitions, 568 flow [2022-11-20 11:27:03,299 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:27:03,300 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;@98ea20a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:27:03,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-11-20 11:27:03,304 INFO L130 PetriNetUnfolder]: 0/24 cut-off events. [2022-11-20 11:27:03,304 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:27:03,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:03,304 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:03,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-20 11:27:03,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:03,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1775485511, now seen corresponding path program 1 times [2022-11-20 11:27:03,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:03,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180649650] [2022-11-20 11:27:03,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:03,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:03,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:03,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180649650] [2022-11-20 11:27:03,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180649650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:03,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:03,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:27:03,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057366579] [2022-11-20 11:27:03,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:03,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:27:03,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:03,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:27:03,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:27:03,339 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 260 [2022-11-20 11:27:03,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 260 transitions, 568 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2022-11-20 11:27:03,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:03,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 260 [2022-11-20 11:27:03,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:06,150 INFO L130 PetriNetUnfolder]: 2687/8550 cut-off events. [2022-11-20 11:27:06,150 INFO L131 PetriNetUnfolder]: For 648/684 co-relation queries the response was YES. [2022-11-20 11:27:06,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13897 conditions, 8550 events. 2687/8550 cut-off events. For 648/684 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 68398 event pairs, 2481 based on Foata normal form. 2081/9444 useless extension candidates. Maximal degree in co-relation 7299. Up to 5052 conditions per place. [2022-11-20 11:27:06,344 INFO L137 encePairwiseOnDemand]: 247/260 looper letters, 76 selfloop transitions, 2 changer transitions 0/247 dead transitions. [2022-11-20 11:27:06,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 247 transitions, 698 flow [2022-11-20 11:27:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:27:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:27:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 596 transitions. [2022-11-20 11:27:06,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.764102564102564 [2022-11-20 11:27:06,347 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 596 transitions. [2022-11-20 11:27:06,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 596 transitions. [2022-11-20 11:27:06,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:06,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 596 transitions. [2022-11-20 11:27:06,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 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) [2022-11-20 11:27:06,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2022-11-20 11:27:06,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2022-11-20 11:27:06,353 INFO L175 Difference]: Start difference. First operand has 249 places, 260 transitions, 568 flow. Second operand 3 states and 596 transitions. [2022-11-20 11:27:06,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 247 transitions, 698 flow [2022-11-20 11:27:06,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 247 transitions, 698 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:27:06,361 INFO L231 Difference]: Finished difference. Result has 244 places, 247 transitions, 546 flow [2022-11-20 11:27:06,362 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=244, PETRI_TRANSITIONS=247} [2022-11-20 11:27:06,362 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, -5 predicate places. [2022-11-20 11:27:06,363 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 247 transitions, 546 flow [2022-11-20 11:27:06,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2022-11-20 11:27:06,364 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:06,364 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:06,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:27:06,365 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-20 11:27:06,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:06,365 INFO L85 PathProgramCache]: Analyzing trace with hash -965929490, now seen corresponding path program 1 times [2022-11-20 11:27:06,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:06,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476670243] [2022-11-20 11:27:06,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:06,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:06,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:06,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476670243] [2022-11-20 11:27:06,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476670243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:06,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:06,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:27:06,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362905370] [2022-11-20 11:27:06,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:06,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:27:06,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:06,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:27:06,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:27:06,400 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 260 [2022-11-20 11:27:06,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 247 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 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) [2022-11-20 11:27:06,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:06,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 260 [2022-11-20 11:27:06,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:08,419 INFO L130 PetriNetUnfolder]: 2173/7264 cut-off events. [2022-11-20 11:27:08,419 INFO L131 PetriNetUnfolder]: For 649/685 co-relation queries the response was YES. [2022-11-20 11:27:08,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11565 conditions, 7264 events. 2173/7264 cut-off events. For 649/685 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 56953 event pairs, 1169 based on Foata normal form. 0/6585 useless extension candidates. Maximal degree in co-relation 11528. Up to 2412 conditions per place. [2022-11-20 11:27:08,566 INFO L137 encePairwiseOnDemand]: 237/260 looper letters, 56 selfloop transitions, 11 changer transitions 0/239 dead transitions. [2022-11-20 11:27:08,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 239 transitions, 664 flow [2022-11-20 11:27:08,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:27:08,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:27:08,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2022-11-20 11:27:08,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7628205128205128 [2022-11-20 11:27:08,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2022-11-20 11:27:08,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2022-11-20 11:27:08,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:08,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2022-11-20 11:27:08,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 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) [2022-11-20 11:27:08,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2022-11-20 11:27:08,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2022-11-20 11:27:08,575 INFO L175 Difference]: Start difference. First operand has 244 places, 247 transitions, 546 flow. Second operand 3 states and 595 transitions. [2022-11-20 11:27:08,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 239 transitions, 664 flow [2022-11-20 11:27:08,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 239 transitions, 660 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:27:08,582 INFO L231 Difference]: Finished difference. Result has 232 places, 235 transitions, 540 flow [2022-11-20 11:27:08,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=540, PETRI_PLACES=232, PETRI_TRANSITIONS=235} [2022-11-20 11:27:08,585 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, -17 predicate places. [2022-11-20 11:27:08,585 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 235 transitions, 540 flow [2022-11-20 11:27:08,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 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) [2022-11-20 11:27:08,586 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:08,586 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:08,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:27:08,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-20 11:27:08,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:08,588 INFO L85 PathProgramCache]: Analyzing trace with hash -957051023, now seen corresponding path program 1 times [2022-11-20 11:27:08,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:08,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703716426] [2022-11-20 11:27:08,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:08,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:08,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:08,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:08,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703716426] [2022-11-20 11:27:08,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703716426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:08,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:08,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:27:08,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542452718] [2022-11-20 11:27:08,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:08,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:27:08,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:08,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:27:08,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:27:08,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 260 [2022-11-20 11:27:08,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 235 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 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) [2022-11-20 11:27:08,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:08,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 260 [2022-11-20 11:27:08,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:11,068 INFO L130 PetriNetUnfolder]: 2174/7894 cut-off events. [2022-11-20 11:27:11,068 INFO L131 PetriNetUnfolder]: For 258/258 co-relation queries the response was YES. [2022-11-20 11:27:11,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12828 conditions, 7894 events. 2174/7894 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 63130 event pairs, 994 based on Foata normal form. 0/7194 useless extension candidates. Maximal degree in co-relation 5478. Up to 2249 conditions per place. [2022-11-20 11:27:11,192 INFO L137 encePairwiseOnDemand]: 248/260 looper letters, 85 selfloop transitions, 8 changer transitions 0/275 dead transitions. [2022-11-20 11:27:11,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 275 transitions, 830 flow [2022-11-20 11:27:11,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:27:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:27:11,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-11-20 11:27:11,195 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8743589743589744 [2022-11-20 11:27:11,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-11-20 11:27:11,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-11-20 11:27:11,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:11,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-11-20 11:27:11,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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) [2022-11-20 11:27:11,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2022-11-20 11:27:11,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2022-11-20 11:27:11,201 INFO L175 Difference]: Start difference. First operand has 232 places, 235 transitions, 540 flow. Second operand 3 states and 682 transitions. [2022-11-20 11:27:11,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 275 transitions, 830 flow [2022-11-20 11:27:11,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 275 transitions, 808 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:27:11,211 INFO L231 Difference]: Finished difference. Result has 233 places, 239 transitions, 566 flow [2022-11-20 11:27:11,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=566, PETRI_PLACES=233, PETRI_TRANSITIONS=239} [2022-11-20 11:27:11,214 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, -16 predicate places. [2022-11-20 11:27:11,214 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 239 transitions, 566 flow [2022-11-20 11:27:11,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 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) [2022-11-20 11:27:11,215 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:11,215 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:11,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:27:11,216 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-20 11:27:11,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:11,216 INFO L85 PathProgramCache]: Analyzing trace with hash 26835934, now seen corresponding path program 1 times [2022-11-20 11:27:11,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:11,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552559270] [2022-11-20 11:27:11,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:11,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:11,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:11,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552559270] [2022-11-20 11:27:11,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552559270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:11,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:11,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:27:11,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838819978] [2022-11-20 11:27:11,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:11,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:27:11,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:11,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:27:11,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:27:11,274 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 260 [2022-11-20 11:27:11,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 239 transitions, 566 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 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) [2022-11-20 11:27:11,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:11,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 260 [2022-11-20 11:27:11,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:13,148 INFO L130 PetriNetUnfolder]: 2124/7842 cut-off events. [2022-11-20 11:27:13,148 INFO L131 PetriNetUnfolder]: For 740/740 co-relation queries the response was YES. [2022-11-20 11:27:13,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12608 conditions, 7842 events. 2124/7842 cut-off events. For 740/740 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 63138 event pairs, 1928 based on Foata normal form. 0/7271 useless extension candidates. Maximal degree in co-relation 5609. Up to 3941 conditions per place. [2022-11-20 11:27:13,268 INFO L137 encePairwiseOnDemand]: 257/260 looper letters, 67 selfloop transitions, 2 changer transitions 0/242 dead transitions. [2022-11-20 11:27:13,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 242 transitions, 710 flow [2022-11-20 11:27:13,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:27:13,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:27:13,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 577 transitions. [2022-11-20 11:27:13,271 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7397435897435898 [2022-11-20 11:27:13,271 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 577 transitions. [2022-11-20 11:27:13,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 577 transitions. [2022-11-20 11:27:13,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:13,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 577 transitions. [2022-11-20 11:27:13,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 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) [2022-11-20 11:27:13,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2022-11-20 11:27:13,277 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2022-11-20 11:27:13,277 INFO L175 Difference]: Start difference. First operand has 233 places, 239 transitions, 566 flow. Second operand 3 states and 577 transitions. [2022-11-20 11:27:13,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 242 transitions, 710 flow [2022-11-20 11:27:13,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 242 transitions, 702 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:27:13,285 INFO L231 Difference]: Finished difference. Result has 233 places, 238 transitions, 560 flow [2022-11-20 11:27:13,285 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=560, PETRI_PLACES=233, PETRI_TRANSITIONS=238} [2022-11-20 11:27:13,286 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, -16 predicate places. [2022-11-20 11:27:13,286 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 238 transitions, 560 flow [2022-11-20 11:27:13,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 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) [2022-11-20 11:27:13,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:13,287 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 11:27:13,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:27:13,288 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-20 11:27:13,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:13,289 INFO L85 PathProgramCache]: Analyzing trace with hash -363605896, now seen corresponding path program 1 times [2022-11-20 11:27:13,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:13,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20430563] [2022-11-20 11:27:13,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:13,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:13,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:13,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20430563] [2022-11-20 11:27:13,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20430563] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:27:13,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672881520] [2022-11-20 11:27:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:13,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:27:13,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:27:13,384 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:27:13,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:27:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:13,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:27:13,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:27:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:27:13,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:27:13,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672881520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:13,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:27:13,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-20 11:27:13,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938677933] [2022-11-20 11:27:13,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:13,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:27:13,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:13,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:27:13,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:27:13,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 260 [2022-11-20 11:27:13,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 238 transitions, 560 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2022-11-20 11:27:13,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:13,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 260 [2022-11-20 11:27:13,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:15,609 INFO L130 PetriNetUnfolder]: 2110/7804 cut-off events. [2022-11-20 11:27:15,609 INFO L131 PetriNetUnfolder]: For 751/751 co-relation queries the response was YES. [2022-11-20 11:27:15,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12469 conditions, 7804 events. 2110/7804 cut-off events. For 751/751 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 62750 event pairs, 1914 based on Foata normal form. 0/7245 useless extension candidates. Maximal degree in co-relation 5521. Up to 3915 conditions per place. [2022-11-20 11:27:15,736 INFO L137 encePairwiseOnDemand]: 257/260 looper letters, 66 selfloop transitions, 2 changer transitions 0/241 dead transitions. [2022-11-20 11:27:15,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 241 transitions, 702 flow [2022-11-20 11:27:15,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:27:15,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:27:15,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 576 transitions. [2022-11-20 11:27:15,739 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7384615384615385 [2022-11-20 11:27:15,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 576 transitions. [2022-11-20 11:27:15,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 576 transitions. [2022-11-20 11:27:15,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:15,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 576 transitions. [2022-11-20 11:27:15,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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) [2022-11-20 11:27:15,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2022-11-20 11:27:15,746 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2022-11-20 11:27:15,746 INFO L175 Difference]: Start difference. First operand has 233 places, 238 transitions, 560 flow. Second operand 3 states and 576 transitions. [2022-11-20 11:27:15,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 241 transitions, 702 flow [2022-11-20 11:27:15,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 241 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:27:15,753 INFO L231 Difference]: Finished difference. Result has 232 places, 237 transitions, 558 flow [2022-11-20 11:27:15,754 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=558, PETRI_PLACES=232, PETRI_TRANSITIONS=237} [2022-11-20 11:27:15,755 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, -17 predicate places. [2022-11-20 11:27:15,755 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 237 transitions, 558 flow [2022-11-20 11:27:15,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2022-11-20 11:27:15,756 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:15,756 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 11:27:15,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 11:27:15,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 11:27:15,962 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting checkThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-20 11:27:15,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:15,962 INFO L85 PathProgramCache]: Analyzing trace with hash -723349642, now seen corresponding path program 1 times [2022-11-20 11:27:15,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:15,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43643996] [2022-11-20 11:27:15,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:15,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:16,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:16,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43643996] [2022-11-20 11:27:16,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43643996] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:27:16,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124915659] [2022-11-20 11:27:16,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:16,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:27:16,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:27:16,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:27:16,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:27:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:16,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:27:16,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:27:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:27:16,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:27:16,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124915659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:16,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:27:16,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-20 11:27:16,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733846427] [2022-11-20 11:27:16,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:16,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:27:16,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:16,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:27:16,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:27:16,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 260 [2022-11-20 11:27:16,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 237 transitions, 558 flow. Second operand has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 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) [2022-11-20 11:27:16,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:16,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 260 [2022-11-20 11:27:16,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:23,290 INFO L130 PetriNetUnfolder]: 6387/40069 cut-off events. [2022-11-20 11:27:23,291 INFO L131 PetriNetUnfolder]: For 11074/87833 co-relation queries the response was YES. [2022-11-20 11:27:23,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53036 conditions, 40069 events. 6387/40069 cut-off events. For 11074/87833 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 570836 event pairs, 1961 based on Foata normal form. 69/33888 useless extension candidates. Maximal degree in co-relation 45284. Up to 4468 conditions per place. [2022-11-20 11:27:23,644 INFO L137 encePairwiseOnDemand]: 246/260 looper letters, 39 selfloop transitions, 10 changer transitions 0/258 dead transitions. [2022-11-20 11:27:23,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 258 transitions, 727 flow [2022-11-20 11:27:23,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:27:23,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:27:23,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 713 transitions. [2022-11-20 11:27:23,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9141025641025641 [2022-11-20 11:27:23,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 713 transitions. [2022-11-20 11:27:23,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 713 transitions. [2022-11-20 11:27:23,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:23,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 713 transitions. [2022-11-20 11:27:23,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 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) [2022-11-20 11:27:23,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2022-11-20 11:27:23,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2022-11-20 11:27:23,654 INFO L175 Difference]: Start difference. First operand has 232 places, 237 transitions, 558 flow. Second operand 3 states and 713 transitions. [2022-11-20 11:27:23,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 258 transitions, 727 flow [2022-11-20 11:27:23,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 258 transitions, 723 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:27:23,689 INFO L231 Difference]: Finished difference. Result has 234 places, 247 transitions, 642 flow [2022-11-20 11:27:23,689 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=642, PETRI_PLACES=234, PETRI_TRANSITIONS=247} [2022-11-20 11:27:23,690 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, -15 predicate places. [2022-11-20 11:27:23,690 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 247 transitions, 642 flow [2022-11-20 11:27:23,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 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) [2022-11-20 11:27:23,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:23,692 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1] [2022-11-20 11:27:23,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:27:23,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:27:23,895 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting checkThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-20 11:27:23,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:23,895 INFO L85 PathProgramCache]: Analyzing trace with hash 645704468, now seen corresponding path program 1 times [2022-11-20 11:27:23,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:23,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639667199] [2022-11-20 11:27:23,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:23,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:24,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:24,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639667199] [2022-11-20 11:27:24,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639667199] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:27:24,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009643651] [2022-11-20 11:27:24,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:24,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:27:24,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:27:24,060 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:27:24,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:27:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:24,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:27:24,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:27:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:24,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:27:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:24,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009643651] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:27:24,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:27:24,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:27:24,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883251207] [2022-11-20 11:27:24,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:27:24,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:27:24,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:24,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:27:24,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:27:24,436 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 260 [2022-11-20 11:27:24,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 247 transitions, 642 flow. Second operand has 10 states, 10 states have (on average 195.9) internal successors, (1959), 10 states have internal predecessors, (1959), 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) [2022-11-20 11:27:24,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:24,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 260 [2022-11-20 11:27:24,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:24,576 INFO L130 PetriNetUnfolder]: 76/339 cut-off events. [2022-11-20 11:27:24,576 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-11-20 11:27:24,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 339 events. 76/339 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1173 event pairs, 0 based on Foata normal form. 12/343 useless extension candidates. Maximal degree in co-relation 576. Up to 63 conditions per place. [2022-11-20 11:27:24,579 INFO L137 encePairwiseOnDemand]: 255/260 looper letters, 32 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2022-11-20 11:27:24,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 284 flow [2022-11-20 11:27:24,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:27:24,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:27:24,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1778 transitions. [2022-11-20 11:27:24,585 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7598290598290598 [2022-11-20 11:27:24,586 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1778 transitions. [2022-11-20 11:27:24,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1778 transitions. [2022-11-20 11:27:24,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:24,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1778 transitions. [2022-11-20 11:27:24,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 197.55555555555554) internal successors, (1778), 9 states have internal predecessors, (1778), 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) [2022-11-20 11:27:24,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 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) [2022-11-20 11:27:24,600 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 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) [2022-11-20 11:27:24,600 INFO L175 Difference]: Start difference. First operand has 234 places, 247 transitions, 642 flow. Second operand 9 states and 1778 transitions. [2022-11-20 11:27:24,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 284 flow [2022-11-20 11:27:24,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-20 11:27:24,603 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 156 flow [2022-11-20 11:27:24,603 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2022-11-20 11:27:24,604 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, -172 predicate places. [2022-11-20 11:27:24,604 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 156 flow [2022-11-20 11:27:24,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 195.9) internal successors, (1959), 10 states have internal predecessors, (1959), 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) [2022-11-20 11:27:24,606 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:24,606 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 11:27:24,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:27:24,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fae0bf3-188b-4f09-a6a8-da61261d9dd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:27:24,812 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-20 11:27:24,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:24,812 INFO L85 PathProgramCache]: Analyzing trace with hash 759265801, now seen corresponding path program 1 times [2022-11-20 11:27:24,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:24,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299915720] [2022-11-20 11:27:24,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:24,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:27:24,833 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:27:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:27:24,856 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:27:24,856 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:27:24,856 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (41 of 42 remaining) [2022-11-20 11:27:24,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (40 of 42 remaining) [2022-11-20 11:27:24,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (39 of 42 remaining) [2022-11-20 11:27:24,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (38 of 42 remaining) [2022-11-20 11:27:24,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (37 of 42 remaining) [2022-11-20 11:27:24,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (36 of 42 remaining) [2022-11-20 11:27:24,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (35 of 42 remaining) [2022-11-20 11:27:24,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (34 of 42 remaining) [2022-11-20 11:27:24,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (33 of 42 remaining) [2022-11-20 11:27:24,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (32 of 42 remaining) [2022-11-20 11:27:24,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (31 of 42 remaining) [2022-11-20 11:27:24,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (30 of 42 remaining) [2022-11-20 11:27:24,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (29 of 42 remaining) [2022-11-20 11:27:24,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (28 of 42 remaining) [2022-11-20 11:27:24,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (27 of 42 remaining) [2022-11-20 11:27:24,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (26 of 42 remaining) [2022-11-20 11:27:24,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (25 of 42 remaining) [2022-11-20 11:27:24,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE (24 of 42 remaining) [2022-11-20 11:27:24,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (23 of 42 remaining) [2022-11-20 11:27:24,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (22 of 42 remaining) [2022-11-20 11:27:24,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE (21 of 42 remaining) [2022-11-20 11:27:24,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (20 of 42 remaining) [2022-11-20 11:27:24,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE (19 of 42 remaining) [2022-11-20 11:27:24,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (18 of 42 remaining) [2022-11-20 11:27:24,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (17 of 42 remaining) [2022-11-20 11:27:24,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE (16 of 42 remaining) [2022-11-20 11:27:24,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (15 of 42 remaining) [2022-11-20 11:27:24,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE (14 of 42 remaining) [2022-11-20 11:27:24,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONDATA_RACE (13 of 42 remaining) [2022-11-20 11:27:24,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 42 remaining) [2022-11-20 11:27:24,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (11 of 42 remaining) [2022-11-20 11:27:24,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (10 of 42 remaining) [2022-11-20 11:27:24,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (9 of 42 remaining) [2022-11-20 11:27:24,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (8 of 42 remaining) [2022-11-20 11:27:24,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (7 of 42 remaining) [2022-11-20 11:27:24,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (6 of 42 remaining) [2022-11-20 11:27:24,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (5 of 42 remaining) [2022-11-20 11:27:24,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (4 of 42 remaining) [2022-11-20 11:27:24,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 42 remaining) [2022-11-20 11:27:24,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 42 remaining) [2022-11-20 11:27:24,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 42 remaining) [2022-11-20 11:27:24,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 42 remaining) [2022-11-20 11:27:24,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:27:24,867 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:24,868 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:27:24,868 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 11:27:24,912 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-20 11:27:24,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 310 transitions, 698 flow [2022-11-20 11:27:26,671 INFO L130 PetriNetUnfolder]: 532/5843 cut-off events. [2022-11-20 11:27:26,672 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-11-20 11:27:26,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6294 conditions, 5843 events. 532/5843 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 47085 event pairs, 64 based on Foata normal form. 0/4654 useless extension candidates. Maximal degree in co-relation 3338. Up to 192 conditions per place. [2022-11-20 11:27:26,737 INFO L82 GeneralOperation]: Start removeDead. Operand has 295 places, 310 transitions, 698 flow [2022-11-20 11:27:26,812 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 310 transitions, 698 flow [2022-11-20 11:27:26,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:27:26,814 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;@98ea20a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:27:26,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2022-11-20 11:27:26,818 INFO L130 PetriNetUnfolder]: 0/24 cut-off events. [2022-11-20 11:27:26,818 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:27:26,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:26,819 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:26,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-20 11:27:26,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:26,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1692627181, now seen corresponding path program 1 times [2022-11-20 11:27:26,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:26,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60405905] [2022-11-20 11:27:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:26,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:26,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:26,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:26,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60405905] [2022-11-20 11:27:26,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60405905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:26,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:26,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:27:26,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227674358] [2022-11-20 11:27:26,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:26,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:27:26,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:26,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:27:26,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:27:26,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 310 [2022-11-20 11:27:26,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 310 transitions, 698 flow. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 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) [2022-11-20 11:27:26,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:26,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 310 [2022-11-20 11:27:26,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:27:45,368 INFO L130 PetriNetUnfolder]: 28496/68376 cut-off events. [2022-11-20 11:27:45,368 INFO L131 PetriNetUnfolder]: For 7595/7967 co-relation queries the response was YES. [2022-11-20 11:27:46,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116502 conditions, 68376 events. 28496/68376 cut-off events. For 7595/7967 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 680315 event pairs, 26638 based on Foata normal form. 24357/84841 useless extension candidates. Maximal degree in co-relation 61368. Up to 45367 conditions per place. [2022-11-20 11:27:47,109 INFO L137 encePairwiseOnDemand]: 294/310 looper letters, 84 selfloop transitions, 2 changer transitions 0/293 dead transitions. [2022-11-20 11:27:47,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 293 transitions, 836 flow [2022-11-20 11:27:47,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:27:47,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:27:47,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2022-11-20 11:27:47,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7752688172043011 [2022-11-20 11:27:47,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2022-11-20 11:27:47,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2022-11-20 11:27:47,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:27:47,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2022-11-20 11:27:47,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 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) [2022-11-20 11:27:47,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 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) [2022-11-20 11:27:47,120 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 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) [2022-11-20 11:27:47,121 INFO L175 Difference]: Start difference. First operand has 295 places, 310 transitions, 698 flow. Second operand 3 states and 721 transitions. [2022-11-20 11:27:47,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 293 transitions, 836 flow [2022-11-20 11:27:47,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 293 transitions, 836 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:27:47,133 INFO L231 Difference]: Finished difference. Result has 287 places, 293 transitions, 668 flow [2022-11-20 11:27:47,134 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=668, PETRI_PLACES=287, PETRI_TRANSITIONS=293} [2022-11-20 11:27:47,134 INFO L288 CegarLoopForPetriNet]: 295 programPoint places, -8 predicate places. [2022-11-20 11:27:47,135 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 293 transitions, 668 flow [2022-11-20 11:27:47,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 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) [2022-11-20 11:27:47,135 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:27:47,136 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:47,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:27:47,136 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-20 11:27:47,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:47,137 INFO L85 PathProgramCache]: Analyzing trace with hash 2141278446, now seen corresponding path program 1 times [2022-11-20 11:27:47,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:47,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047983794] [2022-11-20 11:27:47,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:47,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:47,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:47,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:47,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047983794] [2022-11-20 11:27:47,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047983794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:47,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:47,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:27:47,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978917999] [2022-11-20 11:27:47,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:47,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:27:47,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:47,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:27:47,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:27:47,174 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 310 [2022-11-20 11:27:47,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 293 transitions, 668 flow. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 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) [2022-11-20 11:27:47,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:27:47,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 310 [2022-11-20 11:27:47,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand