./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754cf976-28bd-4ec2-93d6-ce4a9225600c/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754cf976-28bd-4ec2-93d6-ce4a9225600c/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754cf976-28bd-4ec2-93d6-ce4a9225600c/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754cf976-28bd-4ec2-93d6-ce4a9225600c/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754cf976-28bd-4ec2-93d6-ce4a9225600c/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754cf976-28bd-4ec2-93d6-ce4a9225600c/bin/uautomizer-tPACEb0tL8 --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 b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:58:06,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:58:06,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:58:06,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:58:06,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:58:06,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:58:06,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:58:06,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:58:06,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:58:06,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:58:06,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:58:06,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:58:06,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:58:06,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:58:06,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:58:06,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:58:06,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:58:06,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:58:06,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:58:06,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:58:06,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:58:06,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:58:06,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:58:06,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:58:06,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:58:06,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:58:06,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:58:06,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:58:06,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:58:06,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:58:06,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:58:06,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:58:06,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:58:06,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:58:06,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:58:06,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:58:06,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:58:06,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:58:06,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:58:06,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:58:06,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:58:06,465 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754cf976-28bd-4ec2-93d6-ce4a9225600c/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 11:58:06,514 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:58:06,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:58:06,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:58:06,515 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:58:06,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:58:06,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:58:06,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:58:06,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:58:06,518 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:58:06,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:58:06,520 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:58:06,521 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:58:06,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:58:06,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:58:06,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:58:06,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:58:06,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:58:06,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:58:06,523 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 11:58:06,523 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:58:06,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:58:06,524 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:58:06,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:58:06,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:58:06,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:58:06,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:58:06,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:58:06,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:58:06,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:58:06,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:58:06,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:58:06,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:58:06,530 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:58:06,530 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:58:06,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:58:06,532 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_754cf976-28bd-4ec2-93d6-ce4a9225600c/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754cf976-28bd-4ec2-93d6-ce4a9225600c/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 [2022-11-16 11:58:06,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:58:06,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:58:06,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:58:06,992 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:58:06,993 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:58:06,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754cf976-28bd-4ec2-93d6-ce4a9225600c/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i [2022-11-16 11:58:07,080 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754cf976-28bd-4ec2-93d6-ce4a9225600c/bin/uautomizer-tPACEb0tL8/data/b1707e760/6f9b10c9b92a41fe81a5581d1b124a83/FLAG8b1cc70af [2022-11-16 11:58:07,705 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:58:07,706 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754cf976-28bd-4ec2-93d6-ce4a9225600c/sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i [2022-11-16 11:58:07,720 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754cf976-28bd-4ec2-93d6-ce4a9225600c/bin/uautomizer-tPACEb0tL8/data/b1707e760/6f9b10c9b92a41fe81a5581d1b124a83/FLAG8b1cc70af [2022-11-16 11:58:07,987 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754cf976-28bd-4ec2-93d6-ce4a9225600c/bin/uautomizer-tPACEb0tL8/data/b1707e760/6f9b10c9b92a41fe81a5581d1b124a83 [2022-11-16 11:58:07,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:58:07,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:58:07,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:58:07,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:58:08,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:58:08,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:58:07" (1/1) ... [2022-11-16 11:58:08,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ecb15bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:08, skipping insertion in model container [2022-11-16 11:58:08,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:58:07" (1/1) ... [2022-11-16 11:58:08,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:58:08,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:58:08,670 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754cf976-28bd-4ec2-93d6-ce4a9225600c/sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i[30176,30189] [2022-11-16 11:58:08,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:58:08,728 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:58:08,781 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754cf976-28bd-4ec2-93d6-ce4a9225600c/sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i[30176,30189] [2022-11-16 11:58:08,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:58:08,859 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:58:08,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:08 WrapperNode [2022-11-16 11:58:08,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:58:08,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:58:08,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:58:08,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:58:08,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:08" (1/1) ... [2022-11-16 11:58:08,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:08" (1/1) ... [2022-11-16 11:58:08,955 INFO L138 Inliner]: procedures = 170, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2022-11-16 11:58:08,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:58:08,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:58:08,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:58:08,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:58:08,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:08" (1/1) ... [2022-11-16 11:58:08,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:08" (1/1) ... [2022-11-16 11:58:08,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:08" (1/1) ... [2022-11-16 11:58:08,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:08" (1/1) ... [2022-11-16 11:58:08,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:08" (1/1) ... [2022-11-16 11:58:09,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:08" (1/1) ... [2022-11-16 11:58:09,016 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:08" (1/1) ... [2022-11-16 11:58:09,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:08" (1/1) ... [2022-11-16 11:58:09,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:58:09,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:58:09,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:58:09,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:58:09,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:08" (1/1) ... [2022-11-16 11:58:09,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:58:09,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754cf976-28bd-4ec2-93d6-ce4a9225600c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:09,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754cf976-28bd-4ec2-93d6-ce4a9225600c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:58:09,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_754cf976-28bd-4ec2-93d6-ce4a9225600c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:58:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:58:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:58:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:58:09,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:58:09,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:58:09,142 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 11:58:09,142 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 11:58:09,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:58:09,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:58:09,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:58:09,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:58:09,145 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:58:09,378 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:58:09,381 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:58:09,679 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:58:09,688 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:58:09,689 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-16 11:58:09,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:58:09 BoogieIcfgContainer [2022-11-16 11:58:09,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:58:09,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:58:09,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:58:09,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:58:09,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:58:07" (1/3) ... [2022-11-16 11:58:09,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441cceaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:58:09, skipping insertion in model container [2022-11-16 11:58:09,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:58:08" (2/3) ... [2022-11-16 11:58:09,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441cceaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:58:09, skipping insertion in model container [2022-11-16 11:58:09,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:58:09" (3/3) ... [2022-11-16 11:58:09,704 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_02-simple_racefree.i [2022-11-16 11:58:09,715 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:58:09,728 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:58:09,729 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 11:58:09,729 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:58:09,856 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 11:58:09,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 138 transitions, 284 flow [2022-11-16 11:58:10,035 INFO L130 PetriNetUnfolder]: 17/182 cut-off events. [2022-11-16 11:58:10,035 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:58:10,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 182 events. 17/182 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 509 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2022-11-16 11:58:10,045 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 138 transitions, 284 flow [2022-11-16 11:58:10,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 138 transitions, 284 flow [2022-11-16 11:58:10,062 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:58:10,070 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;@2fd38473, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:58:10,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 11:58:10,105 INFO L130 PetriNetUnfolder]: 2/56 cut-off events. [2022-11-16 11:58:10,105 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:58:10,106 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:10,106 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:10,107 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)] === [2022-11-16 11:58:10,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:10,117 INFO L85 PathProgramCache]: Analyzing trace with hash 697350561, now seen corresponding path program 1 times [2022-11-16 11:58:10,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:10,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111258604] [2022-11-16 11:58:10,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:10,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:10,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:10,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:10,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111258604] [2022-11-16 11:58:10,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111258604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:10,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:10,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:58:10,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818525645] [2022-11-16 11:58:10,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:10,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:58:10,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:10,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:58:10,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:58:10,467 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 138 [2022-11-16 11:58:10,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 138 transitions, 284 flow. Second operand has 2 states, 2 states have (on average 124.5) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:10,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:10,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 138 [2022-11-16 11:58:10,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:10,600 INFO L130 PetriNetUnfolder]: 1/164 cut-off events. [2022-11-16 11:58:10,603 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-16 11:58:10,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 164 events. 1/164 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 290 event pairs, 0 based on Foata normal form. 16/166 useless extension candidates. Maximal degree in co-relation 4. Up to 3 conditions per place. [2022-11-16 11:58:10,606 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 2 selfloop transitions, 0 changer transitions 0/126 dead transitions. [2022-11-16 11:58:10,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 126 transitions, 264 flow [2022-11-16 11:58:10,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:58:10,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:58:10,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 261 transitions. [2022-11-16 11:58:10,637 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9456521739130435 [2022-11-16 11:58:10,642 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 261 transitions. [2022-11-16 11:58:10,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 261 transitions. [2022-11-16 11:58:10,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:10,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 261 transitions. [2022-11-16 11:58:10,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:10,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:10,666 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:10,668 INFO L175 Difference]: Start difference. First operand has 129 places, 138 transitions, 284 flow. Second operand 2 states and 261 transitions. [2022-11-16 11:58:10,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 126 transitions, 264 flow [2022-11-16 11:58:10,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 126 transitions, 264 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:58:10,681 INFO L231 Difference]: Finished difference. Result has 129 places, 126 transitions, 260 flow [2022-11-16 11:58:10,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=260, PETRI_PLACES=129, PETRI_TRANSITIONS=126} [2022-11-16 11:58:10,689 INFO L288 CegarLoopForPetriNet]: 129 programPoint places, 0 predicate places. [2022-11-16 11:58:10,690 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 126 transitions, 260 flow [2022-11-16 11:58:10,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 124.5) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:10,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:10,692 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:10,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:58:10,693 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)] === [2022-11-16 11:58:10,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:10,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1584854242, now seen corresponding path program 1 times [2022-11-16 11:58:10,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:10,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652813719] [2022-11-16 11:58:10,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:10,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:10,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:10,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:10,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652813719] [2022-11-16 11:58:10,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652813719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:10,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:10,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:58:10,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572127613] [2022-11-16 11:58:10,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:10,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:58:10,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:10,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:58:10,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:58:10,989 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 138 [2022-11-16 11:58:10,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 126 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:10,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:10,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 138 [2022-11-16 11:58:10,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:11,080 INFO L130 PetriNetUnfolder]: 0/145 cut-off events. [2022-11-16 11:58:11,080 INFO L131 PetriNetUnfolder]: For 9/20 co-relation queries the response was YES. [2022-11-16 11:58:11,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 145 events. 0/145 cut-off events. For 9/20 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 145 event pairs, 0 based on Foata normal form. 1/135 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-16 11:58:11,084 INFO L137 encePairwiseOnDemand]: 135/138 looper letters, 9 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2022-11-16 11:58:11,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 128 transitions, 286 flow [2022-11-16 11:58:11,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:58:11,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:58:11,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2022-11-16 11:58:11,089 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8768115942028986 [2022-11-16 11:58:11,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2022-11-16 11:58:11,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2022-11-16 11:58:11,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:11,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2022-11-16 11:58:11,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:11,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:11,097 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:11,098 INFO L175 Difference]: Start difference. First operand has 129 places, 126 transitions, 260 flow. Second operand 3 states and 363 transitions. [2022-11-16 11:58:11,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 128 transitions, 286 flow [2022-11-16 11:58:11,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 128 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:58:11,106 INFO L231 Difference]: Finished difference. Result has 132 places, 126 transitions, 268 flow [2022-11-16 11:58:11,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=132, PETRI_TRANSITIONS=126} [2022-11-16 11:58:11,108 INFO L288 CegarLoopForPetriNet]: 129 programPoint places, 3 predicate places. [2022-11-16 11:58:11,108 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 126 transitions, 268 flow [2022-11-16 11:58:11,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:11,109 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:11,110 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] [2022-11-16 11:58:11,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:58:11,110 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)] === [2022-11-16 11:58:11,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:11,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1508306832, now seen corresponding path program 1 times [2022-11-16 11:58:11,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:11,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164712054] [2022-11-16 11:58:11,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:11,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:11,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:11,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:11,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164712054] [2022-11-16 11:58:11,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164712054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:11,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:11,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:58:11,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134073964] [2022-11-16 11:58:11,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:11,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:58:11,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:11,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:58:11,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:58:11,233 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 138 [2022-11-16 11:58:11,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 126 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:11,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:11,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 138 [2022-11-16 11:58:11,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:11,383 INFO L130 PetriNetUnfolder]: 29/513 cut-off events. [2022-11-16 11:58:11,383 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2022-11-16 11:58:11,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 513 events. 29/513 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2576 event pairs, 8 based on Foata normal form. 1/459 useless extension candidates. Maximal degree in co-relation 606. Up to 53 conditions per place. [2022-11-16 11:58:11,387 INFO L137 encePairwiseOnDemand]: 129/138 looper letters, 18 selfloop transitions, 6 changer transitions 0/133 dead transitions. [2022-11-16 11:58:11,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 133 transitions, 333 flow [2022-11-16 11:58:11,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:58:11,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:58:11,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-11-16 11:58:11,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.855072463768116 [2022-11-16 11:58:11,390 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-11-16 11:58:11,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-11-16 11:58:11,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:11,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-11-16 11:58:11,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:11,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:11,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:11,395 INFO L175 Difference]: Start difference. First operand has 132 places, 126 transitions, 268 flow. Second operand 3 states and 354 transitions. [2022-11-16 11:58:11,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 133 transitions, 333 flow [2022-11-16 11:58:11,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 133 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:58:11,400 INFO L231 Difference]: Finished difference. Result has 132 places, 128 transitions, 302 flow [2022-11-16 11:58:11,401 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=132, PETRI_TRANSITIONS=128} [2022-11-16 11:58:11,402 INFO L288 CegarLoopForPetriNet]: 129 programPoint places, 3 predicate places. [2022-11-16 11:58:11,402 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 128 transitions, 302 flow [2022-11-16 11:58:11,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:11,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:11,403 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] [2022-11-16 11:58:11,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:58:11,404 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)] === [2022-11-16 11:58:11,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:11,405 INFO L85 PathProgramCache]: Analyzing trace with hash -364644268, now seen corresponding path program 1 times [2022-11-16 11:58:11,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:11,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501449928] [2022-11-16 11:58:11,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:11,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:58:11,438 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:58:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:58:11,506 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:58:11,507 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:58:11,508 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-16 11:58:11,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-16 11:58:11,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-16 11:58:11,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-16 11:58:11,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-16 11:58:11,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-16 11:58:11,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-16 11:58:11,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-16 11:58:11,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-16 11:58:11,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-16 11:58:11,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-16 11:58:11,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:58:11,514 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-16 11:58:11,517 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:58:11,517 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:58:11,549 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:58:11,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 184 transitions, 386 flow [2022-11-16 11:58:11,610 INFO L130 PetriNetUnfolder]: 31/303 cut-off events. [2022-11-16 11:58:11,611 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 11:58:11,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 303 events. 31/303 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1033 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2022-11-16 11:58:11,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 184 transitions, 386 flow [2022-11-16 11:58:11,619 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 184 transitions, 386 flow [2022-11-16 11:58:11,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:58:11,622 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;@2fd38473, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:58:11,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-16 11:58:11,629 INFO L130 PetriNetUnfolder]: 2/56 cut-off events. [2022-11-16 11:58:11,629 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:58:11,630 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:11,630 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:11,630 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)] === [2022-11-16 11:58:11,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:11,631 INFO L85 PathProgramCache]: Analyzing trace with hash 884097113, now seen corresponding path program 1 times [2022-11-16 11:58:11,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:11,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404775345] [2022-11-16 11:58:11,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:11,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:11,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:11,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404775345] [2022-11-16 11:58:11,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404775345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:11,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:11,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:58:11,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044558779] [2022-11-16 11:58:11,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:11,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:58:11,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:11,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:58:11,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:58:11,671 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-16 11:58:11,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 184 transitions, 386 flow. Second operand has 2 states, 2 states have (on average 162.5) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:11,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:11,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-16 11:58:11,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:11,791 INFO L130 PetriNetUnfolder]: 3/272 cut-off events. [2022-11-16 11:58:11,791 INFO L131 PetriNetUnfolder]: For 21/27 co-relation queries the response was YES. [2022-11-16 11:58:11,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 272 events. 3/272 cut-off events. For 21/27 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 752 event pairs, 0 based on Foata normal form. 42/289 useless extension candidates. Maximal degree in co-relation 168. Up to 7 conditions per place. [2022-11-16 11:58:11,794 INFO L137 encePairwiseOnDemand]: 167/184 looper letters, 4 selfloop transitions, 0 changer transitions 0/166 dead transitions. [2022-11-16 11:58:11,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 166 transitions, 358 flow [2022-11-16 11:58:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:58:11,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:58:11,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 345 transitions. [2022-11-16 11:58:11,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9375 [2022-11-16 11:58:11,797 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 345 transitions. [2022-11-16 11:58:11,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 345 transitions. [2022-11-16 11:58:11,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:11,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 345 transitions. [2022-11-16 11:58:11,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 172.5) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:11,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:11,802 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:11,802 INFO L175 Difference]: Start difference. First operand has 170 places, 184 transitions, 386 flow. Second operand 2 states and 345 transitions. [2022-11-16 11:58:11,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 166 transitions, 358 flow [2022-11-16 11:58:11,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 166 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:58:11,812 INFO L231 Difference]: Finished difference. Result has 170 places, 166 transitions, 350 flow [2022-11-16 11:58:11,812 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=350, PETRI_PLACES=170, PETRI_TRANSITIONS=166} [2022-11-16 11:58:11,814 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 0 predicate places. [2022-11-16 11:58:11,815 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 166 transitions, 350 flow [2022-11-16 11:58:11,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 162.5) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:11,815 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:11,816 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:11,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:58:11,816 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)] === [2022-11-16 11:58:11,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:11,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1771600794, now seen corresponding path program 1 times [2022-11-16 11:58:11,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:11,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473515257] [2022-11-16 11:58:11,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:11,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:11,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:11,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:11,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473515257] [2022-11-16 11:58:11,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473515257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:11,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:11,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:58:11,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882450035] [2022-11-16 11:58:11,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:11,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:58:11,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:11,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:58:11,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:58:11,967 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 184 [2022-11-16 11:58:11,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 166 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:11,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:11,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 184 [2022-11-16 11:58:11,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:12,070 INFO L130 PetriNetUnfolder]: 2/253 cut-off events. [2022-11-16 11:58:12,070 INFO L131 PetriNetUnfolder]: For 32/78 co-relation queries the response was YES. [2022-11-16 11:58:12,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 253 events. 2/253 cut-off events. For 32/78 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 627 event pairs, 0 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 284. Up to 16 conditions per place. [2022-11-16 11:58:12,073 INFO L137 encePairwiseOnDemand]: 181/184 looper letters, 13 selfloop transitions, 2 changer transitions 0/170 dead transitions. [2022-11-16 11:58:12,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 170 transitions, 388 flow [2022-11-16 11:58:12,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:58:12,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:58:12,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2022-11-16 11:58:12,077 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8713768115942029 [2022-11-16 11:58:12,077 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2022-11-16 11:58:12,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2022-11-16 11:58:12,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:12,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2022-11-16 11:58:12,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:12,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:12,083 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:12,083 INFO L175 Difference]: Start difference. First operand has 170 places, 166 transitions, 350 flow. Second operand 3 states and 481 transitions. [2022-11-16 11:58:12,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 170 transitions, 388 flow [2022-11-16 11:58:12,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 170 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:58:12,089 INFO L231 Difference]: Finished difference. Result has 173 places, 167 transitions, 362 flow [2022-11-16 11:58:12,090 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=173, PETRI_TRANSITIONS=167} [2022-11-16 11:58:12,094 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 3 predicate places. [2022-11-16 11:58:12,095 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 167 transitions, 362 flow [2022-11-16 11:58:12,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:12,095 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:12,096 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] [2022-11-16 11:58:12,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:58:12,097 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)] === [2022-11-16 11:58:12,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:12,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1563346516, now seen corresponding path program 1 times [2022-11-16 11:58:12,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:12,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42335963] [2022-11-16 11:58:12,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:12,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:12,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:12,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42335963] [2022-11-16 11:58:12,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42335963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:12,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:12,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:58:12,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168949708] [2022-11-16 11:58:12,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:12,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:58:12,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:12,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:58:12,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:58:12,206 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 184 [2022-11-16 11:58:12,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 167 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:12,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:12,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 184 [2022-11-16 11:58:12,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:13,958 INFO L130 PetriNetUnfolder]: 1377/7346 cut-off events. [2022-11-16 11:58:13,959 INFO L131 PetriNetUnfolder]: For 210/270 co-relation queries the response was YES. [2022-11-16 11:58:13,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9871 conditions, 7346 events. 1377/7346 cut-off events. For 210/270 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 78647 event pairs, 506 based on Foata normal form. 2/6305 useless extension candidates. Maximal degree in co-relation 9864. Up to 1414 conditions per place. [2022-11-16 11:58:14,025 INFO L137 encePairwiseOnDemand]: 165/184 looper letters, 42 selfloop transitions, 14 changer transitions 0/192 dead transitions. [2022-11-16 11:58:14,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 192 transitions, 535 flow [2022-11-16 11:58:14,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:58:14,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:58:14,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2022-11-16 11:58:14,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2022-11-16 11:58:14,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2022-11-16 11:58:14,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2022-11-16 11:58:14,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:14,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2022-11-16 11:58:14,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:14,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:14,039 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:14,039 INFO L175 Difference]: Start difference. First operand has 173 places, 167 transitions, 362 flow. Second operand 3 states and 466 transitions. [2022-11-16 11:58:14,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 192 transitions, 535 flow [2022-11-16 11:58:14,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 192 transitions, 533 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:58:14,052 INFO L231 Difference]: Finished difference. Result has 176 places, 181 transitions, 482 flow [2022-11-16 11:58:14,053 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=176, PETRI_TRANSITIONS=181} [2022-11-16 11:58:14,054 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 6 predicate places. [2022-11-16 11:58:14,056 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 181 transitions, 482 flow [2022-11-16 11:58:14,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:14,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:14,057 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] [2022-11-16 11:58:14,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:58:14,058 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)] === [2022-11-16 11:58:14,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:14,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1047336099, now seen corresponding path program 1 times [2022-11-16 11:58:14,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:14,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641095394] [2022-11-16 11:58:14,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:14,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:14,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:14,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641095394] [2022-11-16 11:58:14,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641095394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:14,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:14,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:58:14,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473313593] [2022-11-16 11:58:14,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:14,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:58:14,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:14,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:58:14,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:58:14,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 184 [2022-11-16 11:58:14,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 181 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:14,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:14,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 184 [2022-11-16 11:58:14,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:15,905 INFO L130 PetriNetUnfolder]: 1713/8185 cut-off events. [2022-11-16 11:58:15,906 INFO L131 PetriNetUnfolder]: For 2622/3054 co-relation queries the response was YES. [2022-11-16 11:58:15,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13944 conditions, 8185 events. 1713/8185 cut-off events. For 2622/3054 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 87696 event pairs, 781 based on Foata normal form. 17/7382 useless extension candidates. Maximal degree in co-relation 13936. Up to 2616 conditions per place. [2022-11-16 11:58:16,002 INFO L137 encePairwiseOnDemand]: 175/184 looper letters, 60 selfloop transitions, 14 changer transitions 0/208 dead transitions. [2022-11-16 11:58:16,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 208 transitions, 746 flow [2022-11-16 11:58:16,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:58:16,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:58:16,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2022-11-16 11:58:16,006 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8188405797101449 [2022-11-16 11:58:16,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2022-11-16 11:58:16,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2022-11-16 11:58:16,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:16,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2022-11-16 11:58:16,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,012 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,012 INFO L175 Difference]: Start difference. First operand has 176 places, 181 transitions, 482 flow. Second operand 3 states and 452 transitions. [2022-11-16 11:58:16,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 208 transitions, 746 flow [2022-11-16 11:58:16,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 208 transitions, 702 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:58:16,027 INFO L231 Difference]: Finished difference. Result has 178 places, 193 transitions, 580 flow [2022-11-16 11:58:16,027 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=580, PETRI_PLACES=178, PETRI_TRANSITIONS=193} [2022-11-16 11:58:16,028 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, 8 predicate places. [2022-11-16 11:58:16,029 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 193 transitions, 580 flow [2022-11-16 11:58:16,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:16,030 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] [2022-11-16 11:58:16,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:58:16,030 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)] === [2022-11-16 11:58:16,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:16,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1527158240, now seen corresponding path program 1 times [2022-11-16 11:58:16,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:16,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026593726] [2022-11-16 11:58:16,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:16,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:58:16,061 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:58:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:58:16,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:58:16,115 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:58:16,116 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-16 11:58:16,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-16 11:58:16,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-16 11:58:16,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-16 11:58:16,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-16 11:58:16,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-16 11:58:16,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-16 11:58:16,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-16 11:58:16,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-16 11:58:16,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-16 11:58:16,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-16 11:58:16,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-16 11:58:16,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-16 11:58:16,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-16 11:58:16,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-16 11:58:16,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:58:16,121 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-16 11:58:16,125 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:58:16,125 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 11:58:16,187 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:58:16,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 230 transitions, 490 flow [2022-11-16 11:58:16,310 INFO L130 PetriNetUnfolder]: 50/469 cut-off events. [2022-11-16 11:58:16,311 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 11:58:16,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 469 events. 50/469 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1778 event pairs, 1 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 311. Up to 16 conditions per place. [2022-11-16 11:58:16,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 230 transitions, 490 flow [2022-11-16 11:58:16,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 230 transitions, 490 flow [2022-11-16 11:58:16,324 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:58:16,325 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;@2fd38473, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:58:16,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-16 11:58:16,333 INFO L130 PetriNetUnfolder]: 2/56 cut-off events. [2022-11-16 11:58:16,334 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:58:16,334 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:16,334 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:16,335 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)] === [2022-11-16 11:58:16,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:16,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1029953345, now seen corresponding path program 1 times [2022-11-16 11:58:16,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:16,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363078429] [2022-11-16 11:58:16,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:16,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:16,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:16,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363078429] [2022-11-16 11:58:16,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363078429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:16,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:16,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:58:16,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769305117] [2022-11-16 11:58:16,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:16,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:58:16,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:16,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:58:16,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:58:16,380 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 230 [2022-11-16 11:58:16,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 230 transitions, 490 flow. Second operand has 2 states, 2 states have (on average 200.5) internal successors, (401), 2 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:16,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 230 [2022-11-16 11:58:16,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:16,510 INFO L130 PetriNetUnfolder]: 8/423 cut-off events. [2022-11-16 11:58:16,510 INFO L131 PetriNetUnfolder]: For 50/59 co-relation queries the response was YES. [2022-11-16 11:58:16,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 423 events. 8/423 cut-off events. For 50/59 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1482 event pairs, 1 based on Foata normal form. 104/487 useless extension candidates. Maximal degree in co-relation 286. Up to 16 conditions per place. [2022-11-16 11:58:16,515 INFO L137 encePairwiseOnDemand]: 207/230 looper letters, 6 selfloop transitions, 0 changer transitions 0/206 dead transitions. [2022-11-16 11:58:16,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 206 transitions, 454 flow [2022-11-16 11:58:16,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:58:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:58:16,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 429 transitions. [2022-11-16 11:58:16,518 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9326086956521739 [2022-11-16 11:58:16,518 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 429 transitions. [2022-11-16 11:58:16,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 429 transitions. [2022-11-16 11:58:16,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:16,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 429 transitions. [2022-11-16 11:58:16,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 214.5) internal successors, (429), 2 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,523 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,524 INFO L175 Difference]: Start difference. First operand has 211 places, 230 transitions, 490 flow. Second operand 2 states and 429 transitions. [2022-11-16 11:58:16,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 206 transitions, 454 flow [2022-11-16 11:58:16,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 206 transitions, 454 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:58:16,530 INFO L231 Difference]: Finished difference. Result has 211 places, 206 transitions, 442 flow [2022-11-16 11:58:16,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=442, PETRI_PLACES=211, PETRI_TRANSITIONS=206} [2022-11-16 11:58:16,532 INFO L288 CegarLoopForPetriNet]: 211 programPoint places, 0 predicate places. [2022-11-16 11:58:16,533 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 206 transitions, 442 flow [2022-11-16 11:58:16,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 200.5) internal successors, (401), 2 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:16,534 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:16,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:58:16,534 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)] === [2022-11-16 11:58:16,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:16,535 INFO L85 PathProgramCache]: Analyzing trace with hash -142449664, now seen corresponding path program 1 times [2022-11-16 11:58:16,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:16,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251702550] [2022-11-16 11:58:16,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:16,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:16,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:16,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:16,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251702550] [2022-11-16 11:58:16,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251702550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:16,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:16,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:58:16,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000749223] [2022-11-16 11:58:16,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:16,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:58:16,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:16,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:58:16,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:58:16,629 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 230 [2022-11-16 11:58:16,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 206 transitions, 442 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:16,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 230 [2022-11-16 11:58:16,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:16,815 INFO L130 PetriNetUnfolder]: 7/404 cut-off events. [2022-11-16 11:58:16,815 INFO L131 PetriNetUnfolder]: For 43/82 co-relation queries the response was YES. [2022-11-16 11:58:16,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 404 events. 7/404 cut-off events. For 43/82 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1365 event pairs, 1 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 462. Up to 30 conditions per place. [2022-11-16 11:58:16,819 INFO L137 encePairwiseOnDemand]: 227/230 looper letters, 15 selfloop transitions, 2 changer transitions 0/210 dead transitions. [2022-11-16 11:58:16,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 210 transitions, 484 flow [2022-11-16 11:58:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:58:16,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:58:16,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2022-11-16 11:58:16,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8652173913043478 [2022-11-16 11:58:16,822 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2022-11-16 11:58:16,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2022-11-16 11:58:16,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:16,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2022-11-16 11:58:16,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,828 INFO L175 Difference]: Start difference. First operand has 211 places, 206 transitions, 442 flow. Second operand 3 states and 597 transitions. [2022-11-16 11:58:16,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 210 transitions, 484 flow [2022-11-16 11:58:16,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 210 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:58:16,833 INFO L231 Difference]: Finished difference. Result has 214 places, 207 transitions, 454 flow [2022-11-16 11:58:16,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=214, PETRI_TRANSITIONS=207} [2022-11-16 11:58:16,835 INFO L288 CegarLoopForPetriNet]: 211 programPoint places, 3 predicate places. [2022-11-16 11:58:16,835 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 207 transitions, 454 flow [2022-11-16 11:58:16,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:16,836 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] [2022-11-16 11:58:16,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:58:16,836 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)] === [2022-11-16 11:58:16,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1657852070, now seen corresponding path program 1 times [2022-11-16 11:58:16,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:16,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168367830] [2022-11-16 11:58:16,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:16,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:16,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:16,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168367830] [2022-11-16 11:58:16,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168367830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:16,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:16,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:58:16,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016621808] [2022-11-16 11:58:16,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:16,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:58:16,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:16,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:58:16,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:58:16,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 230 [2022-11-16 11:58:16,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 207 transitions, 454 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:16,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:16,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 230 [2022-11-16 11:58:16,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:35,849 INFO L130 PetriNetUnfolder]: 35177/112133 cut-off events. [2022-11-16 11:58:35,850 INFO L131 PetriNetUnfolder]: For 4871/5255 co-relation queries the response was YES. [2022-11-16 11:58:36,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165752 conditions, 112133 events. 35177/112133 cut-off events. For 4871/5255 co-relation queries the response was YES. Maximal size of possible extension queue 2846. Compared 1615303 event pairs, 13760 based on Foata normal form. 2/94166 useless extension candidates. Maximal degree in co-relation 165744. Up to 29484 conditions per place. [2022-11-16 11:58:36,879 INFO L137 encePairwiseOnDemand]: 203/230 looper letters, 62 selfloop transitions, 20 changer transitions 0/244 dead transitions. [2022-11-16 11:58:36,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 244 transitions, 713 flow [2022-11-16 11:58:36,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:58:36,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:58:36,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2022-11-16 11:58:36,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8289855072463768 [2022-11-16 11:58:36,884 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 572 transitions. [2022-11-16 11:58:36,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 572 transitions. [2022-11-16 11:58:36,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:36,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 572 transitions. [2022-11-16 11:58:36,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:36,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:36,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:36,890 INFO L175 Difference]: Start difference. First operand has 214 places, 207 transitions, 454 flow. Second operand 3 states and 572 transitions. [2022-11-16 11:58:36,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 244 transitions, 713 flow [2022-11-16 11:58:36,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 244 transitions, 711 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:58:36,910 INFO L231 Difference]: Finished difference. Result has 217 places, 227 transitions, 626 flow [2022-11-16 11:58:36,912 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=626, PETRI_PLACES=217, PETRI_TRANSITIONS=227} [2022-11-16 11:58:36,913 INFO L288 CegarLoopForPetriNet]: 211 programPoint places, 6 predicate places. [2022-11-16 11:58:36,913 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 227 transitions, 626 flow [2022-11-16 11:58:36,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:36,914 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:36,914 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:36,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:58:36,915 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)] === [2022-11-16 11:58:36,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:36,916 INFO L85 PathProgramCache]: Analyzing trace with hash 478494543, now seen corresponding path program 1 times [2022-11-16 11:58:36,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:36,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506695341] [2022-11-16 11:58:36,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:36,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:36,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:58:36,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:36,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506695341] [2022-11-16 11:58:36,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506695341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:36,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:36,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:58:36,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349571868] [2022-11-16 11:58:36,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:36,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:58:36,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:36,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:58:36,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:58:36,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 230 [2022-11-16 11:58:36,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 227 transitions, 626 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:36,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:36,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 230 [2022-11-16 11:58:36,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:59,517 INFO L130 PetriNetUnfolder]: 44862/140873 cut-off events. [2022-11-16 11:58:59,517 INFO L131 PetriNetUnfolder]: For 59713/68021 co-relation queries the response was YES. [2022-11-16 11:58:59,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267885 conditions, 140873 events. 44862/140873 cut-off events. For 59713/68021 co-relation queries the response was YES. Maximal size of possible extension queue 3266. Compared 2074678 event pairs, 21238 based on Foata normal form. 228/125514 useless extension candidates. Maximal degree in co-relation 267876. Up to 58507 conditions per place. [2022-11-16 11:59:00,750 INFO L137 encePairwiseOnDemand]: 217/230 looper letters, 92 selfloop transitions, 22 changer transitions 0/274 dead transitions. [2022-11-16 11:59:00,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 274 transitions, 1060 flow [2022-11-16 11:59:00,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:59:00,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:59:00,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2022-11-16 11:59:00,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.808695652173913 [2022-11-16 11:59:00,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2022-11-16 11:59:00,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2022-11-16 11:59:00,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:00,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2022-11-16 11:59:00,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:00,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:00,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:00,761 INFO L175 Difference]: Start difference. First operand has 217 places, 227 transitions, 626 flow. Second operand 3 states and 558 transitions. [2022-11-16 11:59:00,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 274 transitions, 1060 flow [2022-11-16 11:59:00,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 274 transitions, 992 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:59:00,861 INFO L231 Difference]: Finished difference. Result has 219 places, 247 transitions, 792 flow [2022-11-16 11:59:00,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=792, PETRI_PLACES=219, PETRI_TRANSITIONS=247} [2022-11-16 11:59:00,862 INFO L288 CegarLoopForPetriNet]: 211 programPoint places, 8 predicate places. [2022-11-16 11:59:00,863 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 247 transitions, 792 flow [2022-11-16 11:59:00,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:00,863 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:59:00,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:00,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:59:00,864 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:59:00,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:00,865 INFO L85 PathProgramCache]: Analyzing trace with hash 2009072655, now seen corresponding path program 1 times [2022-11-16 11:59:00,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:00,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270290177] [2022-11-16 11:59:00,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:00,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:59:00,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:00,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270290177] [2022-11-16 11:59:00,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270290177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:00,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:00,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:59:00,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629410224] [2022-11-16 11:59:00,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:00,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:59:00,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:00,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:59:00,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:59:00,914 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 230 [2022-11-16 11:59:00,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 247 transitions, 792 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:00,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:59:00,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 230 [2022-11-16 11:59:00,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand