./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.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_9754fed1-0127-440f-9907-a7b4d4c10052/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9754fed1-0127-440f-9907-a7b4d4c10052/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_9754fed1-0127-440f-9907-a7b4d4c10052/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9754fed1-0127-440f-9907-a7b4d4c10052/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9754fed1-0127-440f-9907-a7b4d4c10052/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_9754fed1-0127-440f-9907-a7b4d4c10052/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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- 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 12:06:27,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:06:27,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:06:27,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:06:27,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:06:27,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:06:27,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:06:27,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:06:27,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:06:27,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:06:27,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:06:27,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:06:27,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:06:27,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:06:27,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:06:27,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:06:27,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:06:27,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:06:27,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:06:27,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:06:27,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:06:27,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:06:27,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:06:27,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:06:27,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:06:27,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:06:27,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:06:27,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:06:27,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:06:27,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:06:27,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:06:27,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:06:27,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:06:27,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:06:27,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:06:27,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:06:27,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:06:27,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:06:27,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:06:27,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:06:27,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:06:27,820 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9754fed1-0127-440f-9907-a7b4d4c10052/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 12:06:27,861 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:06:27,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:06:27,862 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:06:27,863 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:06:27,863 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:06:27,864 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:06:27,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:06:27,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:06:27,865 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:06:27,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:06:27,866 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:06:27,867 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:06:27,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:06:27,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:06:27,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:06:27,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:06:27,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:06:27,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:06:27,877 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 12:06:27,877 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:06:27,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:06:27,878 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:06:27,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:06:27,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:06:27,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:06:27,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:06:27,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:06:27,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:06:27,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:06:27,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:06:27,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:06:27,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:06:27,882 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:06:27,882 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:06:27,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:06:27,883 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_9754fed1-0127-440f-9907-a7b4d4c10052/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9754fed1-0127-440f-9907-a7b4d4c10052/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2022-11-20 12:06:28,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:06:28,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:06:28,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:06:28,221 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:06:28,222 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:06:28,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9754fed1-0127-440f-9907-a7b4d4c10052/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2022-11-20 12:06:31,203 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:06:31,502 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:06:31,503 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9754fed1-0127-440f-9907-a7b4d4c10052/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2022-11-20 12:06:31,516 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9754fed1-0127-440f-9907-a7b4d4c10052/bin/uautomizer-ug76WZFUDN/data/3d6f25cda/a8b66c78a65c4c5398236995a20890ab/FLAG3f39deaed [2022-11-20 12:06:31,530 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9754fed1-0127-440f-9907-a7b4d4c10052/bin/uautomizer-ug76WZFUDN/data/3d6f25cda/a8b66c78a65c4c5398236995a20890ab [2022-11-20 12:06:31,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:06:31,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:06:31,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:06:31,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:06:31,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:06:31,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:06:31" (1/1) ... [2022-11-20 12:06:31,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b323f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:31, skipping insertion in model container [2022-11-20 12:06:31,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:06:31" (1/1) ... [2022-11-20 12:06:31,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:06:31,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:06:32,094 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_9754fed1-0127-440f-9907-a7b4d4c10052/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2022-11-20 12:06:32,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:06:32,152 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:06:32,206 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_9754fed1-0127-440f-9907-a7b4d4c10052/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2022-11-20 12:06:32,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:06:32,305 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:06:32,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:32 WrapperNode [2022-11-20 12:06:32,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:06:32,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:06:32,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:06:32,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:06:32,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:32" (1/1) ... [2022-11-20 12:06:32,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:32" (1/1) ... [2022-11-20 12:06:32,393 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2022-11-20 12:06:32,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:06:32,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:06:32,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:06:32,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:06:32,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:32" (1/1) ... [2022-11-20 12:06:32,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:32" (1/1) ... [2022-11-20 12:06:32,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:32" (1/1) ... [2022-11-20 12:06:32,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:32" (1/1) ... [2022-11-20 12:06:32,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:32" (1/1) ... [2022-11-20 12:06:32,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:32" (1/1) ... [2022-11-20 12:06:32,449 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:32" (1/1) ... [2022-11-20 12:06:32,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:32" (1/1) ... [2022-11-20 12:06:32,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:06:32,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:06:32,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:06:32,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:06:32,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:32" (1/1) ... [2022-11-20 12:06:32,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:06:32,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9754fed1-0127-440f-9907-a7b4d4c10052/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:32,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9754fed1-0127-440f-9907-a7b4d4c10052/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:06:32,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9754fed1-0127-440f-9907-a7b4d4c10052/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:06:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:06:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:06:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:06:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:06:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 12:06:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:06:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 12:06:32,557 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 12:06:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:06:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:06:32,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:06:32,559 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 12:06:32,758 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:06:32,761 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:06:33,039 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:06:33,048 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:06:33,048 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-20 12:06:33,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:06:33 BoogieIcfgContainer [2022-11-20 12:06:33,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:06:33,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:06:33,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:06:33,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:06:33,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:06:31" (1/3) ... [2022-11-20 12:06:33,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62598bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:06:33, skipping insertion in model container [2022-11-20 12:06:33,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:32" (2/3) ... [2022-11-20 12:06:33,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62598bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:06:33, skipping insertion in model container [2022-11-20 12:06:33,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:06:33" (3/3) ... [2022-11-20 12:06:33,060 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2022-11-20 12:06:33,069 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:06:33,080 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:06:33,080 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-20 12:06:33,080 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:06:33,158 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 12:06:33,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 150 transitions, 308 flow [2022-11-20 12:06:33,285 INFO L130 PetriNetUnfolder]: 23/203 cut-off events. [2022-11-20 12:06:33,286 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 12:06:33,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 203 events. 23/203 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 571 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2022-11-20 12:06:33,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 150 transitions, 308 flow [2022-11-20 12:06:33,313 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 150 transitions, 308 flow [2022-11-20 12:06:33,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:06:33,344 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;@292ec8ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:06:33,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-20 12:06:33,387 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2022-11-20 12:06:33,390 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:06:33,390 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:06:33,391 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:33,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-20 12:06:33,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:33,400 INFO L85 PathProgramCache]: Analyzing trace with hash -603325259, now seen corresponding path program 1 times [2022-11-20 12:06:33,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:33,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826751144] [2022-11-20 12:06:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:33,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:33,656 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 12:06:33,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:33,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826751144] [2022-11-20 12:06:33,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826751144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:33,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:33,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:06:33,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470543811] [2022-11-20 12:06:33,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:33,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:06:33,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:33,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:06:33,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:06:33,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 150 [2022-11-20 12:06:33,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 150 transitions, 308 flow. Second operand has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 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 12:06:33,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:06:33,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 150 [2022-11-20 12:06:33,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:06:33,803 INFO L130 PetriNetUnfolder]: 7/185 cut-off events. [2022-11-20 12:06:33,803 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-20 12:06:33,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 185 events. 7/185 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 422 event pairs, 0 based on Foata normal form. 16/181 useless extension candidates. Maximal degree in co-relation 92. Up to 4 conditions per place. [2022-11-20 12:06:33,808 INFO L137 encePairwiseOnDemand]: 139/150 looper letters, 2 selfloop transitions, 0 changer transitions 0/138 dead transitions. [2022-11-20 12:06:33,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 138 transitions, 288 flow [2022-11-20 12:06:33,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:06:33,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 12:06:33,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 285 transitions. [2022-11-20 12:06:33,824 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.95 [2022-11-20 12:06:33,825 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 285 transitions. [2022-11-20 12:06:33,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 285 transitions. [2022-11-20 12:06:33,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:06:33,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 285 transitions. [2022-11-20 12:06:33,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 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 12:06:33,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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 12:06:33,838 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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 12:06:33,840 INFO L175 Difference]: Start difference. First operand has 138 places, 150 transitions, 308 flow. Second operand 2 states and 285 transitions. [2022-11-20 12:06:33,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 138 transitions, 288 flow [2022-11-20 12:06:33,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 138 transitions, 288 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:06:33,849 INFO L231 Difference]: Finished difference. Result has 138 places, 138 transitions, 284 flow [2022-11-20 12:06:33,851 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=284, PETRI_PLACES=138, PETRI_TRANSITIONS=138} [2022-11-20 12:06:33,857 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 0 predicate places. [2022-11-20 12:06:33,857 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 138 transitions, 284 flow [2022-11-20 12:06:33,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 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 12:06:33,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:06:33,858 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:33,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:06:33,859 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-20 12:06:33,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:33,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1884187574, now seen corresponding path program 1 times [2022-11-20 12:06:33,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:33,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992709973] [2022-11-20 12:06:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:33,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:34,095 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 12:06:34,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:34,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992709973] [2022-11-20 12:06:34,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992709973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:34,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:34,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:06:34,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647344570] [2022-11-20 12:06:34,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:34,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:06:34,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:34,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:06:34,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:06:34,101 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 150 [2022-11-20 12:06:34,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 138 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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 12:06:34,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:06:34,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 150 [2022-11-20 12:06:34,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:06:34,159 INFO L130 PetriNetUnfolder]: 3/157 cut-off events. [2022-11-20 12:06:34,159 INFO L131 PetriNetUnfolder]: For 9/20 co-relation queries the response was YES. [2022-11-20 12:06:34,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 157 events. 3/157 cut-off events. For 9/20 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 212 event pairs, 0 based on Foata normal form. 1/144 useless extension candidates. Maximal degree in co-relation 172. Up to 7 conditions per place. [2022-11-20 12:06:34,160 INFO L137 encePairwiseOnDemand]: 147/150 looper letters, 9 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2022-11-20 12:06:34,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 140 transitions, 310 flow [2022-11-20 12:06:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:06:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:06:34,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2022-11-20 12:06:34,164 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8866666666666667 [2022-11-20 12:06:34,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2022-11-20 12:06:34,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2022-11-20 12:06:34,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:06:34,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2022-11-20 12:06:34,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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 12:06:34,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 12:06:34,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 12:06:34,182 INFO L175 Difference]: Start difference. First operand has 138 places, 138 transitions, 284 flow. Second operand 3 states and 399 transitions. [2022-11-20 12:06:34,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 140 transitions, 310 flow [2022-11-20 12:06:34,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 140 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:06:34,186 INFO L231 Difference]: Finished difference. Result has 141 places, 138 transitions, 292 flow [2022-11-20 12:06:34,187 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=141, PETRI_TRANSITIONS=138} [2022-11-20 12:06:34,188 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 3 predicate places. [2022-11-20 12:06:34,188 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 138 transitions, 292 flow [2022-11-20 12:06:34,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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 12:06:34,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:06:34,189 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:34,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:06:34,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-20 12:06:34,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:34,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1044951051, now seen corresponding path program 1 times [2022-11-20 12:06:34,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:34,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117236658] [2022-11-20 12:06:34,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:34,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:34,302 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 12:06:34,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:34,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117236658] [2022-11-20 12:06:34,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117236658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:34,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:34,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:06:34,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398235638] [2022-11-20 12:06:34,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:34,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:06:34,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:34,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:06:34,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:06:34,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 150 [2022-11-20 12:06:34,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 138 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 12:06:34,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:06:34,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 150 [2022-11-20 12:06:34,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:06:34,442 INFO L130 PetriNetUnfolder]: 42/573 cut-off events. [2022-11-20 12:06:34,442 INFO L131 PetriNetUnfolder]: For 13/18 co-relation queries the response was YES. [2022-11-20 12:06:34,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 573 events. 42/573 cut-off events. For 13/18 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2853 event pairs, 11 based on Foata normal form. 1/504 useless extension candidates. Maximal degree in co-relation 668. Up to 53 conditions per place. [2022-11-20 12:06:34,447 INFO L137 encePairwiseOnDemand]: 141/150 looper letters, 18 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2022-11-20 12:06:34,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 145 transitions, 357 flow [2022-11-20 12:06:34,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:06:34,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:06:34,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2022-11-20 12:06:34,449 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-11-20 12:06:34,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2022-11-20 12:06:34,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2022-11-20 12:06:34,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:06:34,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2022-11-20 12:06:34,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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 12:06:34,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 12:06:34,454 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 12:06:34,454 INFO L175 Difference]: Start difference. First operand has 141 places, 138 transitions, 292 flow. Second operand 3 states and 390 transitions. [2022-11-20 12:06:34,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 145 transitions, 357 flow [2022-11-20 12:06:34,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 145 transitions, 353 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:06:34,458 INFO L231 Difference]: Finished difference. Result has 141 places, 140 transitions, 326 flow [2022-11-20 12:06:34,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=141, PETRI_TRANSITIONS=140} [2022-11-20 12:06:34,459 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 3 predicate places. [2022-11-20 12:06:34,460 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 140 transitions, 326 flow [2022-11-20 12:06:34,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 12:06:34,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:06:34,461 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:34,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:06:34,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-20 12:06:34,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:34,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1432707695, now seen corresponding path program 1 times [2022-11-20 12:06:34,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:34,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965637364] [2022-11-20 12:06:34,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:34,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:06:34,490 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:06:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:06:34,559 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:06:34,559 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:06:34,560 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-20 12:06:34,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-20 12:06:34,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-20 12:06:34,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-20 12:06:34,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-20 12:06:34,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-20 12:06:34,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-20 12:06:34,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-20 12:06:34,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-20 12:06:34,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-20 12:06:34,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-20 12:06:34,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:06:34,572 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-20 12:06:34,575 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:06:34,576 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 12:06:34,640 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:06:34,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 196 transitions, 410 flow [2022-11-20 12:06:34,708 INFO L130 PetriNetUnfolder]: 40/333 cut-off events. [2022-11-20 12:06:34,708 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 12:06:34,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 333 events. 40/333 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1147 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 205. Up to 9 conditions per place. [2022-11-20 12:06:34,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 196 transitions, 410 flow [2022-11-20 12:06:34,717 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 196 transitions, 410 flow [2022-11-20 12:06:34,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:06:34,728 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;@292ec8ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:06:34,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-20 12:06:34,740 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2022-11-20 12:06:34,741 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:06:34,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:06:34,745 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:34,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 12:06:34,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:34,746 INFO L85 PathProgramCache]: Analyzing trace with hash -644423371, now seen corresponding path program 1 times [2022-11-20 12:06:34,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:34,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370730250] [2022-11-20 12:06:34,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:34,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:34,794 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 12:06:34,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:34,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370730250] [2022-11-20 12:06:34,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370730250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:34,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:34,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:06:34,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6774800] [2022-11-20 12:06:34,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:34,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:06:34,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:34,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:06:34,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:06:34,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 196 [2022-11-20 12:06:34,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 196 transitions, 410 flow. Second operand has 2 states, 2 states have (on average 174.5) internal successors, (349), 2 states have internal predecessors, (349), 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 12:06:34,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:06:34,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 196 [2022-11-20 12:06:34,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:06:34,868 INFO L130 PetriNetUnfolder]: 12/302 cut-off events. [2022-11-20 12:06:34,868 INFO L131 PetriNetUnfolder]: For 19/26 co-relation queries the response was YES. [2022-11-20 12:06:34,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 302 events. 12/302 cut-off events. For 19/26 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 924 event pairs, 0 based on Foata normal form. 42/309 useless extension candidates. Maximal degree in co-relation 189. Up to 7 conditions per place. [2022-11-20 12:06:34,871 INFO L137 encePairwiseOnDemand]: 179/196 looper letters, 4 selfloop transitions, 0 changer transitions 0/178 dead transitions. [2022-11-20 12:06:34,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 178 transitions, 382 flow [2022-11-20 12:06:34,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:06:34,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 12:06:34,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 369 transitions. [2022-11-20 12:06:34,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9413265306122449 [2022-11-20 12:06:34,873 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 369 transitions. [2022-11-20 12:06:34,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 369 transitions. [2022-11-20 12:06:34,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:06:34,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 369 transitions. [2022-11-20 12:06:34,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 184.5) internal successors, (369), 2 states have internal predecessors, (369), 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 12:06:34,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 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 12:06:34,876 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 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 12:06:34,876 INFO L175 Difference]: Start difference. First operand has 179 places, 196 transitions, 410 flow. Second operand 2 states and 369 transitions. [2022-11-20 12:06:34,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 178 transitions, 382 flow [2022-11-20 12:06:34,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 178 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:06:34,880 INFO L231 Difference]: Finished difference. Result has 179 places, 178 transitions, 374 flow [2022-11-20 12:06:34,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=374, PETRI_PLACES=179, PETRI_TRANSITIONS=178} [2022-11-20 12:06:34,882 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 0 predicate places. [2022-11-20 12:06:34,882 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 178 transitions, 374 flow [2022-11-20 12:06:34,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 174.5) internal successors, (349), 2 states have internal predecessors, (349), 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 12:06:34,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:06:34,882 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:34,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:06:34,883 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 12:06:34,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:34,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1843089462, now seen corresponding path program 1 times [2022-11-20 12:06:34,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:34,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514444241] [2022-11-20 12:06:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:34,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:34,938 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 12:06:34,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:34,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514444241] [2022-11-20 12:06:34,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514444241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:34,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:34,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:06:34,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365286412] [2022-11-20 12:06:34,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:34,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:06:34,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:34,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:06:34,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:06:34,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 196 [2022-11-20 12:06:34,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 178 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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 12:06:34,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:06:34,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 196 [2022-11-20 12:06:34,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:06:35,009 INFO L130 PetriNetUnfolder]: 8/274 cut-off events. [2022-11-20 12:06:35,009 INFO L131 PetriNetUnfolder]: For 14/46 co-relation queries the response was YES. [2022-11-20 12:06:35,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 274 events. 8/274 cut-off events. For 14/46 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 759 event pairs, 0 based on Foata normal form. 1/246 useless extension candidates. Maximal degree in co-relation 305. Up to 16 conditions per place. [2022-11-20 12:06:35,012 INFO L137 encePairwiseOnDemand]: 193/196 looper letters, 13 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2022-11-20 12:06:35,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 182 transitions, 412 flow [2022-11-20 12:06:35,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:06:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:06:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2022-11-20 12:06:35,014 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8792517006802721 [2022-11-20 12:06:35,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2022-11-20 12:06:35,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2022-11-20 12:06:35,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:06:35,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2022-11-20 12:06:35,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 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 12:06:35,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 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 12:06:35,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 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 12:06:35,018 INFO L175 Difference]: Start difference. First operand has 179 places, 178 transitions, 374 flow. Second operand 3 states and 517 transitions. [2022-11-20 12:06:35,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 182 transitions, 412 flow [2022-11-20 12:06:35,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 182 transitions, 412 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:06:35,022 INFO L231 Difference]: Finished difference. Result has 182 places, 179 transitions, 386 flow [2022-11-20 12:06:35,023 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=386, PETRI_PLACES=182, PETRI_TRANSITIONS=179} [2022-11-20 12:06:35,023 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 3 predicate places. [2022-11-20 12:06:35,024 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 179 transitions, 386 flow [2022-11-20 12:06:35,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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 12:06:35,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:06:35,024 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:35,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:06:35,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 12:06:35,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:35,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1511097929, now seen corresponding path program 1 times [2022-11-20 12:06:35,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:35,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113317425] [2022-11-20 12:06:35,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:35,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:35,069 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 12:06:35,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:35,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113317425] [2022-11-20 12:06:35,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113317425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:35,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:35,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:06:35,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100973643] [2022-11-20 12:06:35,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:35,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:06:35,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:35,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:06:35,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:06:35,072 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 196 [2022-11-20 12:06:35,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 179 transitions, 386 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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 12:06:35,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:06:35,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 196 [2022-11-20 12:06:35,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:06:36,707 INFO L130 PetriNetUnfolder]: 1530/8073 cut-off events. [2022-11-20 12:06:36,707 INFO L131 PetriNetUnfolder]: For 394/581 co-relation queries the response was YES. [2022-11-20 12:06:36,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10664 conditions, 8073 events. 1530/8073 cut-off events. For 394/581 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 88456 event pairs, 513 based on Foata normal form. 9/6867 useless extension candidates. Maximal degree in co-relation 10657. Up to 1422 conditions per place. [2022-11-20 12:06:36,779 INFO L137 encePairwiseOnDemand]: 177/196 looper letters, 42 selfloop transitions, 14 changer transitions 0/204 dead transitions. [2022-11-20 12:06:36,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 204 transitions, 559 flow [2022-11-20 12:06:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:06:36,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:06:36,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2022-11-20 12:06:36,786 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8537414965986394 [2022-11-20 12:06:36,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2022-11-20 12:06:36,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2022-11-20 12:06:36,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:06:36,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2022-11-20 12:06:36,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 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 12:06:36,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 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 12:06:36,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 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 12:06:36,792 INFO L175 Difference]: Start difference. First operand has 182 places, 179 transitions, 386 flow. Second operand 3 states and 502 transitions. [2022-11-20 12:06:36,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 204 transitions, 559 flow [2022-11-20 12:06:36,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 204 transitions, 557 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:06:36,800 INFO L231 Difference]: Finished difference. Result has 185 places, 193 transitions, 506 flow [2022-11-20 12:06:36,801 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=506, PETRI_PLACES=185, PETRI_TRANSITIONS=193} [2022-11-20 12:06:36,802 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 6 predicate places. [2022-11-20 12:06:36,802 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 193 transitions, 506 flow [2022-11-20 12:06:36,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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 12:06:36,803 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:06:36,803 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:36,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:06:36,804 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 12:06:36,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:36,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1271923888, now seen corresponding path program 1 times [2022-11-20 12:06:36,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:36,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432337056] [2022-11-20 12:06:36,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:36,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:36,864 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 12:06:36,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:36,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432337056] [2022-11-20 12:06:36,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432337056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:36,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:36,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:06:36,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749813805] [2022-11-20 12:06:36,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:36,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:06:36,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:36,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:06:36,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:06:36,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 196 [2022-11-20 12:06:36,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 193 transitions, 506 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 12:06:36,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:06:36,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 196 [2022-11-20 12:06:36,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:06:38,423 INFO L130 PetriNetUnfolder]: 1844/8642 cut-off events. [2022-11-20 12:06:38,423 INFO L131 PetriNetUnfolder]: For 2774/3065 co-relation queries the response was YES. [2022-11-20 12:06:38,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14479 conditions, 8642 events. 1844/8642 cut-off events. For 2774/3065 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 94110 event pairs, 805 based on Foata normal form. 19/7722 useless extension candidates. Maximal degree in co-relation 14471. Up to 2653 conditions per place. [2022-11-20 12:06:38,514 INFO L137 encePairwiseOnDemand]: 187/196 looper letters, 60 selfloop transitions, 14 changer transitions 0/220 dead transitions. [2022-11-20 12:06:38,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 220 transitions, 770 flow [2022-11-20 12:06:38,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:06:38,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:06:38,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2022-11-20 12:06:38,520 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8299319727891157 [2022-11-20 12:06:38,520 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2022-11-20 12:06:38,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2022-11-20 12:06:38,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:06:38,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2022-11-20 12:06:38,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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 12:06:38,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 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 12:06:38,525 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 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 12:06:38,560 INFO L175 Difference]: Start difference. First operand has 185 places, 193 transitions, 506 flow. Second operand 3 states and 488 transitions. [2022-11-20 12:06:38,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 220 transitions, 770 flow [2022-11-20 12:06:38,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 220 transitions, 726 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:06:38,572 INFO L231 Difference]: Finished difference. Result has 187 places, 205 transitions, 604 flow [2022-11-20 12:06:38,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=604, PETRI_PLACES=187, PETRI_TRANSITIONS=205} [2022-11-20 12:06:38,573 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 8 predicate places. [2022-11-20 12:06:38,573 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 205 transitions, 604 flow [2022-11-20 12:06:38,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 12:06:38,574 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:06:38,574 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2022-11-20 12:06:38,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:06:38,574 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 12:06:38,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:38,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1825049081, now seen corresponding path program 1 times [2022-11-20 12:06:38,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:38,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134619957] [2022-11-20 12:06:38,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:38,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:06:38,596 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:06:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:06:38,617 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:06:38,617 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:06:38,617 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-20 12:06:38,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-20 12:06:38,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-20 12:06:38,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-20 12:06:38,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-20 12:06:38,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-20 12:06:38,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-20 12:06:38,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-20 12:06:38,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-20 12:06:38,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-20 12:06:38,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-20 12:06:38,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-20 12:06:38,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-20 12:06:38,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-20 12:06:38,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-20 12:06:38,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:06:38,621 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-20 12:06:38,621 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:06:38,621 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 12:06:38,651 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:06:38,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 242 transitions, 514 flow [2022-11-20 12:06:38,731 INFO L130 PetriNetUnfolder]: 62/508 cut-off events. [2022-11-20 12:06:38,731 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-20 12:06:38,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 508 events. 62/508 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1934 event pairs, 1 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 341. Up to 16 conditions per place. [2022-11-20 12:06:38,737 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 242 transitions, 514 flow [2022-11-20 12:06:38,742 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 242 transitions, 514 flow [2022-11-20 12:06:38,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:06:38,743 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;@292ec8ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:06:38,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-20 12:06:38,749 INFO L130 PetriNetUnfolder]: 5/72 cut-off events. [2022-11-20 12:06:38,750 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:06:38,750 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:06:38,750 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:38,750 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:06:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:38,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2097605259, now seen corresponding path program 1 times [2022-11-20 12:06:38,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:38,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818921094] [2022-11-20 12:06:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:38,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:38,775 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 12:06:38,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:38,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818921094] [2022-11-20 12:06:38,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818921094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:38,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:38,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:06:38,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608083833] [2022-11-20 12:06:38,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:38,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:06:38,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:38,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:06:38,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:06:38,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 242 [2022-11-20 12:06:38,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 242 transitions, 514 flow. Second operand has 2 states, 2 states have (on average 212.5) internal successors, (425), 2 states have internal predecessors, (425), 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 12:06:38,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:06:38,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 242 [2022-11-20 12:06:38,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:06:38,867 INFO L130 PetriNetUnfolder]: 20/462 cut-off events. [2022-11-20 12:06:38,868 INFO L131 PetriNetUnfolder]: For 51/68 co-relation queries the response was YES. [2022-11-20 12:06:38,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 462 events. 20/462 cut-off events. For 51/68 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1723 event pairs, 1 based on Foata normal form. 104/512 useless extension candidates. Maximal degree in co-relation 316. Up to 16 conditions per place. [2022-11-20 12:06:38,873 INFO L137 encePairwiseOnDemand]: 219/242 looper letters, 6 selfloop transitions, 0 changer transitions 0/218 dead transitions. [2022-11-20 12:06:38,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 218 transitions, 478 flow [2022-11-20 12:06:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:06:38,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 12:06:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 453 transitions. [2022-11-20 12:06:38,876 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9359504132231405 [2022-11-20 12:06:38,876 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 453 transitions. [2022-11-20 12:06:38,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 453 transitions. [2022-11-20 12:06:38,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:06:38,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 453 transitions. [2022-11-20 12:06:38,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 226.5) internal successors, (453), 2 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 12:06:38,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 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 12:06:38,879 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 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 12:06:38,879 INFO L175 Difference]: Start difference. First operand has 220 places, 242 transitions, 514 flow. Second operand 2 states and 453 transitions. [2022-11-20 12:06:38,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 218 transitions, 478 flow [2022-11-20 12:06:38,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 218 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:06:38,884 INFO L231 Difference]: Finished difference. Result has 220 places, 218 transitions, 466 flow [2022-11-20 12:06:38,884 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=466, PETRI_PLACES=220, PETRI_TRANSITIONS=218} [2022-11-20 12:06:38,885 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 0 predicate places. [2022-11-20 12:06:38,885 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 218 transitions, 466 flow [2022-11-20 12:06:38,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 212.5) internal successors, (425), 2 states have internal predecessors, (425), 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 12:06:38,886 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:06:38,886 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:38,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:06:38,886 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:06:38,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:38,887 INFO L85 PathProgramCache]: Analyzing trace with hash 389907574, now seen corresponding path program 1 times [2022-11-20 12:06:38,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:38,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497920407] [2022-11-20 12:06:38,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:38,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:38,971 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 12:06:38,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:38,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497920407] [2022-11-20 12:06:38,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497920407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:38,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:38,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:06:38,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268719456] [2022-11-20 12:06:38,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:38,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:06:38,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:38,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:06:38,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:06:38,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 242 [2022-11-20 12:06:38,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 218 transitions, 466 flow. Second operand has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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 12:06:38,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:06:38,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 242 [2022-11-20 12:06:38,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:06:39,097 INFO L130 PetriNetUnfolder]: 16/434 cut-off events. [2022-11-20 12:06:39,097 INFO L131 PetriNetUnfolder]: For 43/115 co-relation queries the response was YES. [2022-11-20 12:06:39,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 434 events. 16/434 cut-off events. For 43/115 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1581 event pairs, 1 based on Foata normal form. 1/387 useless extension candidates. Maximal degree in co-relation 492. Up to 30 conditions per place. [2022-11-20 12:06:39,103 INFO L137 encePairwiseOnDemand]: 239/242 looper letters, 15 selfloop transitions, 2 changer transitions 0/222 dead transitions. [2022-11-20 12:06:39,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 222 transitions, 508 flow [2022-11-20 12:06:39,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:06:39,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:06:39,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 633 transitions. [2022-11-20 12:06:39,106 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.871900826446281 [2022-11-20 12:06:39,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 633 transitions. [2022-11-20 12:06:39,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 633 transitions. [2022-11-20 12:06:39,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:06:39,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 633 transitions. [2022-11-20 12:06:39,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 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 12:06:39,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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 12:06:39,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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 12:06:39,112 INFO L175 Difference]: Start difference. First operand has 220 places, 218 transitions, 466 flow. Second operand 3 states and 633 transitions. [2022-11-20 12:06:39,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 222 transitions, 508 flow [2022-11-20 12:06:39,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 222 transitions, 508 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:06:39,117 INFO L231 Difference]: Finished difference. Result has 223 places, 219 transitions, 478 flow [2022-11-20 12:06:39,118 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=478, PETRI_PLACES=223, PETRI_TRANSITIONS=219} [2022-11-20 12:06:39,118 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 3 predicate places. [2022-11-20 12:06:39,119 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 219 transitions, 478 flow [2022-11-20 12:06:39,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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 12:06:39,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:06:39,120 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:39,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:06:39,120 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:06:39,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:39,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1433863517, now seen corresponding path program 1 times [2022-11-20 12:06:39,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:39,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600002254] [2022-11-20 12:06:39,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:39,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:39,165 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 12:06:39,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:39,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600002254] [2022-11-20 12:06:39,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600002254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:39,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:39,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:06:39,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683706840] [2022-11-20 12:06:39,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:39,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:06:39,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:39,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:06:39,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:06:39,168 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 242 [2022-11-20 12:06:39,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 219 transitions, 478 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 12:06:39,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:06:39,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 242 [2022-11-20 12:06:39,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:06:56,388 INFO L130 PetriNetUnfolder]: 37205/124918 cut-off events. [2022-11-20 12:06:56,389 INFO L131 PetriNetUnfolder]: For 9143/12888 co-relation queries the response was YES. [2022-11-20 12:06:57,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180145 conditions, 124918 events. 37205/124918 cut-off events. For 9143/12888 co-relation queries the response was YES. Maximal size of possible extension queue 3377. Compared 1881170 event pairs, 14620 based on Foata normal form. 59/104275 useless extension candidates. Maximal degree in co-relation 180137. Up to 29758 conditions per place. [2022-11-20 12:06:58,005 INFO L137 encePairwiseOnDemand]: 215/242 looper letters, 62 selfloop transitions, 20 changer transitions 0/256 dead transitions. [2022-11-20 12:06:58,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 256 transitions, 737 flow [2022-11-20 12:06:58,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:06:58,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:06:58,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2022-11-20 12:06:58,008 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.837465564738292 [2022-11-20 12:06:58,008 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2022-11-20 12:06:58,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2022-11-20 12:06:58,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:06:58,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2022-11-20 12:06:58,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 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 12:06:58,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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 12:06:58,013 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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 12:06:58,013 INFO L175 Difference]: Start difference. First operand has 223 places, 219 transitions, 478 flow. Second operand 3 states and 608 transitions. [2022-11-20 12:06:58,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 256 transitions, 737 flow [2022-11-20 12:06:58,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 256 transitions, 735 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:06:58,040 INFO L231 Difference]: Finished difference. Result has 226 places, 239 transitions, 650 flow [2022-11-20 12:06:58,042 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=226, PETRI_TRANSITIONS=239} [2022-11-20 12:06:58,043 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 6 predicate places. [2022-11-20 12:06:58,044 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 239 transitions, 650 flow [2022-11-20 12:06:58,044 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 12:06:58,044 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:06:58,044 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:58,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:06:58,045 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:06:58,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:58,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1851622226, now seen corresponding path program 1 times [2022-11-20 12:06:58,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:58,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450047107] [2022-11-20 12:06:58,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:58,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:58,110 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 12:06:58,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:58,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450047107] [2022-11-20 12:06:58,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450047107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:58,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:58,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:06:58,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246746641] [2022-11-20 12:06:58,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:58,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:06:58,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:58,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:06:58,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:06:58,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 242 [2022-11-20 12:06:58,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 239 transitions, 650 flow. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 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 12:06:58,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:06:58,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 242 [2022-11-20 12:06:58,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:18,011 INFO L130 PetriNetUnfolder]: 46616/146797 cut-off events. [2022-11-20 12:07:18,011 INFO L131 PetriNetUnfolder]: For 64629/75060 co-relation queries the response was YES. [2022-11-20 12:07:18,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275729 conditions, 146797 events. 46616/146797 cut-off events. For 64629/75060 co-relation queries the response was YES. Maximal size of possible extension queue 3894. Compared 2205712 event pairs, 21379 based on Foata normal form. 228/130100 useless extension candidates. Maximal degree in co-relation 275720. Up to 59402 conditions per place. [2022-11-20 12:07:19,677 INFO L137 encePairwiseOnDemand]: 229/242 looper letters, 92 selfloop transitions, 22 changer transitions 0/286 dead transitions. [2022-11-20 12:07:19,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 286 transitions, 1084 flow [2022-11-20 12:07:19,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:07:19,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:07:19,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2022-11-20 12:07:19,679 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-11-20 12:07:19,680 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2022-11-20 12:07:19,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2022-11-20 12:07:19,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:19,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2022-11-20 12:07:19,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 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 12:07:19,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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 12:07:19,684 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 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 12:07:19,685 INFO L175 Difference]: Start difference. First operand has 226 places, 239 transitions, 650 flow. Second operand 3 states and 594 transitions. [2022-11-20 12:07:19,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 286 transitions, 1084 flow [2022-11-20 12:07:20,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 286 transitions, 1016 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:07:20,010 INFO L231 Difference]: Finished difference. Result has 228 places, 259 transitions, 816 flow [2022-11-20 12:07:20,011 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=816, PETRI_PLACES=228, PETRI_TRANSITIONS=259} [2022-11-20 12:07:20,012 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 8 predicate places. [2022-11-20 12:07:20,013 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 259 transitions, 816 flow [2022-11-20 12:07:20,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 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 12:07:20,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:07:20,013 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:20,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:07:20,014 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 12:07:20,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:20,014 INFO L85 PathProgramCache]: Analyzing trace with hash 166141553, now seen corresponding path program 1 times [2022-11-20 12:07:20,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:20,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690713459] [2022-11-20 12:07:20,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:20,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:20,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:07:20,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:20,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690713459] [2022-11-20 12:07:20,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690713459] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:07:20,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820547655] [2022-11-20 12:07:20,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:20,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:07:20,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9754fed1-0127-440f-9907-a7b4d4c10052/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:07:20,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9754fed1-0127-440f-9907-a7b4d4c10052/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:07:20,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9754fed1-0127-440f-9907-a7b4d4c10052/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:07:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:20,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:07:20,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:07:20,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:07:20,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:07:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:07:20,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820547655] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:07:20,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:07:20,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 12:07:20,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963844169] [2022-11-20 12:07:20,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:07:20,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:07:20,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:20,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:07:20,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:07:20,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 242 [2022-11-20 12:07:20,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 259 transitions, 816 flow. Second operand has 10 states, 10 states have (on average 206.3) internal successors, (2063), 10 states have internal predecessors, (2063), 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 12:07:20,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:07:20,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 242 [2022-11-20 12:07:20,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand