./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b 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_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro --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 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --- 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-8393723 [2022-11-18 18:47:12,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:47:12,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:47:12,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:47:12,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:47:12,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:47:12,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:47:12,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:47:12,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:47:12,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:47:12,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:47:12,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:47:12,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:47:12,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:47:12,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:47:12,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:47:12,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:47:12,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:47:12,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:47:12,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:47:12,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:47:12,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:47:12,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:47:12,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:47:12,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:47:12,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:47:12,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:47:12,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:47:12,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:47:12,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:47:12,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:47:12,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:47:12,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:47:12,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:47:12,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:47:12,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:47:12,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:47:12,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:47:12,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:47:12,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:47:12,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:47:12,273 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 18:47:12,314 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:47:12,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:47:12,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:47:12,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:47:12,317 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:47:12,317 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:47:12,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:47:12,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:47:12,318 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:47:12,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:47:12,319 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:47:12,320 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:47:12,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:47:12,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:47:12,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:47:12,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:47:12,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:47:12,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:47:12,321 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 18:47:12,321 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:47:12,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:47:12,322 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:47:12,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:47:12,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:47:12,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:47:12,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:47:12,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:47:12,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:47:12,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:47:12,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:47:12,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:47:12,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:47:12,326 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:47:12,327 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:47:12,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:47:12,327 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_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef [2022-11-18 18:47:12,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:47:12,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:47:12,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:47:12,715 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:47:12,716 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:47:12,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2022-11-18 18:47:12,799 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro/data/b5db8ad3d/ae8ee4a7da1641d9bc9e7d9dd5a5ebf6/FLAG07c56d4c2 [2022-11-18 18:47:13,411 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:47:13,412 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2022-11-18 18:47:13,429 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro/data/b5db8ad3d/ae8ee4a7da1641d9bc9e7d9dd5a5ebf6/FLAG07c56d4c2 [2022-11-18 18:47:13,689 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro/data/b5db8ad3d/ae8ee4a7da1641d9bc9e7d9dd5a5ebf6 [2022-11-18 18:47:13,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:47:13,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:47:13,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:47:13,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:47:13,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:47:13,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:47:13" (1/1) ... [2022-11-18 18:47:13,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d47688a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:13, skipping insertion in model container [2022-11-18 18:47:13,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:47:13" (1/1) ... [2022-11-18 18:47:13,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:47:13,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:47:14,387 WARN L234 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_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2022-11-18 18:47:14,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:47:14,437 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:47:14,474 WARN L234 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_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2022-11-18 18:47:14,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:47:14,536 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:47:14,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:14 WrapperNode [2022-11-18 18:47:14,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:47:14,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:47:14,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:47:14,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:47:14,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:14" (1/1) ... [2022-11-18 18:47:14,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:14" (1/1) ... [2022-11-18 18:47:14,601 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2022-11-18 18:47:14,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:47:14,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:47:14,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:47:14,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:47:14,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:14" (1/1) ... [2022-11-18 18:47:14,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:14" (1/1) ... [2022-11-18 18:47:14,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:14" (1/1) ... [2022-11-18 18:47:14,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:14" (1/1) ... [2022-11-18 18:47:14,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:14" (1/1) ... [2022-11-18 18:47:14,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:14" (1/1) ... [2022-11-18 18:47:14,631 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:14" (1/1) ... [2022-11-18 18:47:14,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:14" (1/1) ... [2022-11-18 18:47:14,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:47:14,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:47:14,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:47:14,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:47:14,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:14" (1/1) ... [2022-11-18 18:47:14,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:47:14,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:47:14,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:47:14,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:47:14,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:47:14,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:47:14,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:47:14,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:47:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 18:47:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:47:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 18:47:14,723 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 18:47:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:47:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:47:14,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:47:14,725 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:47:14,983 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:47:14,985 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:47:15,350 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:47:15,360 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:47:15,361 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-18 18:47:15,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:47:15 BoogieIcfgContainer [2022-11-18 18:47:15,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:47:15,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:47:15,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:47:15,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:47:15,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:47:13" (1/3) ... [2022-11-18 18:47:15,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e948ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:47:15, skipping insertion in model container [2022-11-18 18:47:15,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:14" (2/3) ... [2022-11-18 18:47:15,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e948ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:47:15, skipping insertion in model container [2022-11-18 18:47:15,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:47:15" (3/3) ... [2022-11-18 18:47:15,380 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2022-11-18 18:47:15,395 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:47:15,407 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:47:15,408 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 18:47:15,408 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:47:15,547 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 18:47:15,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 150 transitions, 308 flow [2022-11-18 18:47:15,764 INFO L130 PetriNetUnfolder]: 23/203 cut-off events. [2022-11-18 18:47:15,764 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 18:47:15,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 203 events. 23/203 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 571 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2022-11-18 18:47:15,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 150 transitions, 308 flow [2022-11-18 18:47:15,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 150 transitions, 308 flow [2022-11-18 18:47:15,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:47:15,795 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;@2961136c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:47:15,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-18 18:47:15,813 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2022-11-18 18:47:15,814 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:47:15,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:15,815 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:15,815 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)] === [2022-11-18 18:47:15,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:15,821 INFO L85 PathProgramCache]: Analyzing trace with hash -954926303, now seen corresponding path program 1 times [2022-11-18 18:47:15,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:15,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263140022] [2022-11-18 18:47:15,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:15,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:16,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:16,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263140022] [2022-11-18 18:47:16,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263140022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:16,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:16,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:47:16,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761441098] [2022-11-18 18:47:16,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:16,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:47:16,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:16,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:47:16,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:47:16,229 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 150 [2022-11-18 18:47:16,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 150 transitions, 308 flow. Second operand has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:16,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:16,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 150 [2022-11-18 18:47:16,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:16,338 INFO L130 PetriNetUnfolder]: 7/185 cut-off events. [2022-11-18 18:47:16,339 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-18 18:47:16,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 185 events. 7/185 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 422 event pairs, 0 based on Foata normal form. 16/181 useless extension candidates. Maximal degree in co-relation 92. Up to 4 conditions per place. [2022-11-18 18:47:16,344 INFO L137 encePairwiseOnDemand]: 139/150 looper letters, 2 selfloop transitions, 0 changer transitions 0/138 dead transitions. [2022-11-18 18:47:16,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 138 transitions, 288 flow [2022-11-18 18:47:16,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:47:16,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 18:47:16,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 285 transitions. [2022-11-18 18:47:16,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.95 [2022-11-18 18:47:16,367 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 285 transitions. [2022-11-18 18:47:16,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 285 transitions. [2022-11-18 18:47:16,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:16,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 285 transitions. [2022-11-18 18:47:16,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:16,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:16,388 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:16,390 INFO L175 Difference]: Start difference. First operand has 138 places, 150 transitions, 308 flow. Second operand 2 states and 285 transitions. [2022-11-18 18:47:16,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 138 transitions, 288 flow [2022-11-18 18:47:16,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 138 transitions, 288 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:47:16,401 INFO L231 Difference]: Finished difference. Result has 138 places, 138 transitions, 284 flow [2022-11-18 18:47:16,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=284, PETRI_PLACES=138, PETRI_TRANSITIONS=138} [2022-11-18 18:47:16,407 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 0 predicate places. [2022-11-18 18:47:16,408 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 138 transitions, 284 flow [2022-11-18 18:47:16,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:16,409 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:16,409 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:16,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:47:16,410 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)] === [2022-11-18 18:47:16,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:16,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1532586530, now seen corresponding path program 1 times [2022-11-18 18:47:16,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:16,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179909517] [2022-11-18 18:47:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:16,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:16,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:16,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179909517] [2022-11-18 18:47:16,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179909517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:16,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:16,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:16,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027420075] [2022-11-18 18:47:16,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:16,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:16,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:16,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:16,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:16,612 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 150 [2022-11-18 18:47:16,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 138 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:16,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:16,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 150 [2022-11-18 18:47:16,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:16,680 INFO L130 PetriNetUnfolder]: 3/157 cut-off events. [2022-11-18 18:47:16,680 INFO L131 PetriNetUnfolder]: For 9/20 co-relation queries the response was YES. [2022-11-18 18:47:16,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 157 events. 3/157 cut-off events. For 9/20 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 212 event pairs, 0 based on Foata normal form. 1/144 useless extension candidates. Maximal degree in co-relation 172. Up to 7 conditions per place. [2022-11-18 18:47:16,682 INFO L137 encePairwiseOnDemand]: 147/150 looper letters, 9 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2022-11-18 18:47:16,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 140 transitions, 310 flow [2022-11-18 18:47:16,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:47:16,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:47:16,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2022-11-18 18:47:16,686 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8866666666666667 [2022-11-18 18:47:16,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2022-11-18 18:47:16,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2022-11-18 18:47:16,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:16,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2022-11-18 18:47:16,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:16,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:16,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:16,695 INFO L175 Difference]: Start difference. First operand has 138 places, 138 transitions, 284 flow. Second operand 3 states and 399 transitions. [2022-11-18 18:47:16,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 140 transitions, 310 flow [2022-11-18 18:47:16,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 140 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:47:16,717 INFO L231 Difference]: Finished difference. Result has 141 places, 138 transitions, 292 flow [2022-11-18 18:47:16,717 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=141, PETRI_TRANSITIONS=138} [2022-11-18 18:47:16,718 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 3 predicate places. [2022-11-18 18:47:16,718 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 138 transitions, 292 flow [2022-11-18 18:47:16,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:16,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:16,720 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:16,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:47:16,721 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)] === [2022-11-18 18:47:16,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:16,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1981806186, now seen corresponding path program 1 times [2022-11-18 18:47:16,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:16,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590251783] [2022-11-18 18:47:16,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:16,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:16,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:16,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590251783] [2022-11-18 18:47:16,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590251783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:16,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:16,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:47:16,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354756036] [2022-11-18 18:47:16,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:16,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:16,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:16,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:16,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:16,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 150 [2022-11-18 18:47:16,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 138 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:16,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:16,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 150 [2022-11-18 18:47:16,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:16,931 INFO L130 PetriNetUnfolder]: 42/573 cut-off events. [2022-11-18 18:47:16,932 INFO L131 PetriNetUnfolder]: For 13/18 co-relation queries the response was YES. [2022-11-18 18:47:16,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 573 events. 42/573 cut-off events. For 13/18 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2853 event pairs, 11 based on Foata normal form. 1/504 useless extension candidates. Maximal degree in co-relation 668. Up to 53 conditions per place. [2022-11-18 18:47:16,937 INFO L137 encePairwiseOnDemand]: 141/150 looper letters, 18 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2022-11-18 18:47:16,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 145 transitions, 357 flow [2022-11-18 18:47:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:47:16,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:47:16,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2022-11-18 18:47:16,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-11-18 18:47:16,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2022-11-18 18:47:16,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2022-11-18 18:47:16,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:16,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2022-11-18 18:47:16,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:16,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:16,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:16,945 INFO L175 Difference]: Start difference. First operand has 141 places, 138 transitions, 292 flow. Second operand 3 states and 390 transitions. [2022-11-18 18:47:16,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 145 transitions, 357 flow [2022-11-18 18:47:16,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 145 transitions, 353 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:47:16,950 INFO L231 Difference]: Finished difference. Result has 141 places, 140 transitions, 326 flow [2022-11-18 18:47:16,950 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=141, PETRI_TRANSITIONS=140} [2022-11-18 18:47:16,951 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 3 predicate places. [2022-11-18 18:47:16,951 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 140 transitions, 326 flow [2022-11-18 18:47:16,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:16,952 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:16,953 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:16,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:47:16,953 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)] === [2022-11-18 18:47:16,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:16,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1776770139, now seen corresponding path program 1 times [2022-11-18 18:47:16,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:16,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851371406] [2022-11-18 18:47:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:16,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:47:16,987 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:47:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:47:17,068 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:47:17,068 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:47:17,070 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-18 18:47:17,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-18 18:47:17,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-18 18:47:17,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-18 18:47:17,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-18 18:47:17,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-18 18:47:17,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-18 18:47:17,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-18 18:47:17,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-18 18:47:17,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-18 18:47:17,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-18 18:47:17,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:47:17,083 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-18 18:47:17,089 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:47:17,089 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 18:47:17,151 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 18:47:17,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 196 transitions, 410 flow [2022-11-18 18:47:17,259 INFO L130 PetriNetUnfolder]: 40/333 cut-off events. [2022-11-18 18:47:17,259 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 18:47:17,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 333 events. 40/333 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1147 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 205. Up to 9 conditions per place. [2022-11-18 18:47:17,263 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 196 transitions, 410 flow [2022-11-18 18:47:17,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 196 transitions, 410 flow [2022-11-18 18:47:17,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:47:17,281 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;@2961136c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:47:17,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-18 18:47:17,294 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2022-11-18 18:47:17,295 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:47:17,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:17,299 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:17,300 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)] === [2022-11-18 18:47:17,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:17,301 INFO L85 PathProgramCache]: Analyzing trace with hash -996024415, now seen corresponding path program 1 times [2022-11-18 18:47:17,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:17,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911185586] [2022-11-18 18:47:17,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:17,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:17,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:17,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:17,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911185586] [2022-11-18 18:47:17,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911185586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:17,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:17,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:47:17,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475626123] [2022-11-18 18:47:17,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:17,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:47:17,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:17,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:47:17,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:47:17,345 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 196 [2022-11-18 18:47:17,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 196 transitions, 410 flow. Second operand has 2 states, 2 states have (on average 174.5) internal successors, (349), 2 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:17,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:17,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 196 [2022-11-18 18:47:17,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:17,412 INFO L130 PetriNetUnfolder]: 12/302 cut-off events. [2022-11-18 18:47:17,413 INFO L131 PetriNetUnfolder]: For 19/26 co-relation queries the response was YES. [2022-11-18 18:47:17,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 302 events. 12/302 cut-off events. For 19/26 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 924 event pairs, 0 based on Foata normal form. 42/309 useless extension candidates. Maximal degree in co-relation 189. Up to 7 conditions per place. [2022-11-18 18:47:17,416 INFO L137 encePairwiseOnDemand]: 179/196 looper letters, 4 selfloop transitions, 0 changer transitions 0/178 dead transitions. [2022-11-18 18:47:17,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 178 transitions, 382 flow [2022-11-18 18:47:17,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:47:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 18:47:17,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 369 transitions. [2022-11-18 18:47:17,418 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9413265306122449 [2022-11-18 18:47:17,418 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 369 transitions. [2022-11-18 18:47:17,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 369 transitions. [2022-11-18 18:47:17,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:17,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 369 transitions. [2022-11-18 18:47:17,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 184.5) internal successors, (369), 2 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:17,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:17,422 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:17,422 INFO L175 Difference]: Start difference. First operand has 179 places, 196 transitions, 410 flow. Second operand 2 states and 369 transitions. [2022-11-18 18:47:17,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 178 transitions, 382 flow [2022-11-18 18:47:17,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 178 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:47:17,426 INFO L231 Difference]: Finished difference. Result has 179 places, 178 transitions, 374 flow [2022-11-18 18:47:17,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=374, PETRI_PLACES=179, PETRI_TRANSITIONS=178} [2022-11-18 18:47:17,428 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 0 predicate places. [2022-11-18 18:47:17,428 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 178 transitions, 374 flow [2022-11-18 18:47:17,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 174.5) internal successors, (349), 2 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:17,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:17,429 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:17,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:47:17,429 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)] === [2022-11-18 18:47:17,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:17,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1491488418, now seen corresponding path program 1 times [2022-11-18 18:47:17,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:17,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063454785] [2022-11-18 18:47:17,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:17,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:17,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:17,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:17,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063454785] [2022-11-18 18:47:17,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063454785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:17,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:17,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:17,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120524986] [2022-11-18 18:47:17,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:17,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:17,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:17,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:17,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:17,500 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 196 [2022-11-18 18:47:17,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 178 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:17,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:17,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 196 [2022-11-18 18:47:17,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:17,586 INFO L130 PetriNetUnfolder]: 8/274 cut-off events. [2022-11-18 18:47:17,586 INFO L131 PetriNetUnfolder]: For 14/46 co-relation queries the response was YES. [2022-11-18 18:47:17,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 274 events. 8/274 cut-off events. For 14/46 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 759 event pairs, 0 based on Foata normal form. 1/246 useless extension candidates. Maximal degree in co-relation 305. Up to 16 conditions per place. [2022-11-18 18:47:17,590 INFO L137 encePairwiseOnDemand]: 193/196 looper letters, 13 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2022-11-18 18:47:17,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 182 transitions, 412 flow [2022-11-18 18:47:17,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:47:17,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:47:17,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2022-11-18 18:47:17,593 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8792517006802721 [2022-11-18 18:47:17,593 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2022-11-18 18:47:17,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2022-11-18 18:47:17,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:17,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2022-11-18 18:47:17,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:17,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:17,597 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:17,598 INFO L175 Difference]: Start difference. First operand has 179 places, 178 transitions, 374 flow. Second operand 3 states and 517 transitions. [2022-11-18 18:47:17,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 182 transitions, 412 flow [2022-11-18 18:47:17,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 182 transitions, 412 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:47:17,602 INFO L231 Difference]: Finished difference. Result has 182 places, 179 transitions, 386 flow [2022-11-18 18:47:17,603 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=386, PETRI_PLACES=182, PETRI_TRANSITIONS=179} [2022-11-18 18:47:17,606 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 3 predicate places. [2022-11-18 18:47:17,606 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 179 transitions, 386 flow [2022-11-18 18:47:17,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:17,607 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:17,607 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:17,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:47:17,608 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)] === [2022-11-18 18:47:17,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:17,608 INFO L85 PathProgramCache]: Analyzing trace with hash -242887870, now seen corresponding path program 1 times [2022-11-18 18:47:17,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:17,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875944140] [2022-11-18 18:47:17,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:17,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:17,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:17,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875944140] [2022-11-18 18:47:17,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875944140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:17,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:17,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:47:17,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19688962] [2022-11-18 18:47:17,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:17,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:17,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:17,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:17,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:17,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 196 [2022-11-18 18:47:17,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 179 transitions, 386 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:17,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:17,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 196 [2022-11-18 18:47:17,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:19,470 INFO L130 PetriNetUnfolder]: 1530/8073 cut-off events. [2022-11-18 18:47:19,470 INFO L131 PetriNetUnfolder]: For 394/581 co-relation queries the response was YES. [2022-11-18 18:47:19,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10664 conditions, 8073 events. 1530/8073 cut-off events. For 394/581 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 88474 event pairs, 513 based on Foata normal form. 9/6867 useless extension candidates. Maximal degree in co-relation 10657. Up to 1422 conditions per place. [2022-11-18 18:47:19,555 INFO L137 encePairwiseOnDemand]: 177/196 looper letters, 42 selfloop transitions, 14 changer transitions 0/204 dead transitions. [2022-11-18 18:47:19,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 204 transitions, 559 flow [2022-11-18 18:47:19,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:47:19,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:47:19,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2022-11-18 18:47:19,560 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8537414965986394 [2022-11-18 18:47:19,560 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2022-11-18 18:47:19,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2022-11-18 18:47:19,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:19,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2022-11-18 18:47:19,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:19,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:19,565 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:19,565 INFO L175 Difference]: Start difference. First operand has 182 places, 179 transitions, 386 flow. Second operand 3 states and 502 transitions. [2022-11-18 18:47:19,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 204 transitions, 559 flow [2022-11-18 18:47:19,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 204 transitions, 557 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:47:19,572 INFO L231 Difference]: Finished difference. Result has 185 places, 193 transitions, 506 flow [2022-11-18 18:47:19,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=506, PETRI_PLACES=185, PETRI_TRANSITIONS=193} [2022-11-18 18:47:19,575 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 6 predicate places. [2022-11-18 18:47:19,575 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 193 transitions, 506 flow [2022-11-18 18:47:19,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:19,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:19,576 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:19,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:47:19,577 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)] === [2022-11-18 18:47:19,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:19,577 INFO L85 PathProgramCache]: Analyzing trace with hash -612769627, now seen corresponding path program 1 times [2022-11-18 18:47:19,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:19,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743071456] [2022-11-18 18:47:19,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:19,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:19,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:19,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743071456] [2022-11-18 18:47:19,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743071456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:19,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:19,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:47:19,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113679983] [2022-11-18 18:47:19,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:19,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:19,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:19,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:19,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:19,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 196 [2022-11-18 18:47:19,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 193 transitions, 506 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:19,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:19,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 196 [2022-11-18 18:47:19,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:21,379 INFO L130 PetriNetUnfolder]: 1844/8642 cut-off events. [2022-11-18 18:47:21,379 INFO L131 PetriNetUnfolder]: For 2774/3065 co-relation queries the response was YES. [2022-11-18 18:47:21,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14479 conditions, 8642 events. 1844/8642 cut-off events. For 2774/3065 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 94200 event pairs, 805 based on Foata normal form. 19/7722 useless extension candidates. Maximal degree in co-relation 14471. Up to 2653 conditions per place. [2022-11-18 18:47:21,487 INFO L137 encePairwiseOnDemand]: 187/196 looper letters, 60 selfloop transitions, 14 changer transitions 0/220 dead transitions. [2022-11-18 18:47:21,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 220 transitions, 770 flow [2022-11-18 18:47:21,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:47:21,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:47:21,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2022-11-18 18:47:21,490 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8299319727891157 [2022-11-18 18:47:21,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2022-11-18 18:47:21,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2022-11-18 18:47:21,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:21,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2022-11-18 18:47:21,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:21,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:21,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:21,495 INFO L175 Difference]: Start difference. First operand has 185 places, 193 transitions, 506 flow. Second operand 3 states and 488 transitions. [2022-11-18 18:47:21,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 220 transitions, 770 flow [2022-11-18 18:47:21,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 220 transitions, 726 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:47:21,509 INFO L231 Difference]: Finished difference. Result has 187 places, 205 transitions, 604 flow [2022-11-18 18:47:21,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=604, PETRI_PLACES=187, PETRI_TRANSITIONS=205} [2022-11-18 18:47:21,510 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 8 predicate places. [2022-11-18 18:47:21,510 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 205 transitions, 604 flow [2022-11-18 18:47:21,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:21,511 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:21,511 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:21,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:47:21,512 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)] === [2022-11-18 18:47:21,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:21,512 INFO L85 PathProgramCache]: Analyzing trace with hash -657859504, now seen corresponding path program 1 times [2022-11-18 18:47:21,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:21,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975119502] [2022-11-18 18:47:21,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:21,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:47:21,539 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:47:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:47:21,566 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:47:21,566 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:47:21,566 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-18 18:47:21,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-18 18:47:21,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-18 18:47:21,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-18 18:47:21,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-18 18:47:21,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-18 18:47:21,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-18 18:47:21,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-18 18:47:21,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-18 18:47:21,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-18 18:47:21,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-18 18:47:21,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-18 18:47:21,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-18 18:47:21,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-18 18:47:21,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-18 18:47:21,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:47:21,570 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 18:47:21,571 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:47:21,571 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 18:47:21,608 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 18:47:21,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 242 transitions, 514 flow [2022-11-18 18:47:21,710 INFO L130 PetriNetUnfolder]: 62/508 cut-off events. [2022-11-18 18:47:21,710 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 18:47:21,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 508 events. 62/508 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1938 event pairs, 1 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 341. Up to 16 conditions per place. [2022-11-18 18:47:21,717 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 242 transitions, 514 flow [2022-11-18 18:47:21,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 242 transitions, 514 flow [2022-11-18 18:47:21,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:47:21,725 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;@2961136c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:47:21,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-18 18:47:21,732 INFO L130 PetriNetUnfolder]: 5/72 cut-off events. [2022-11-18 18:47:21,732 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:47:21,732 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:21,732 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:21,732 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)] === [2022-11-18 18:47:21,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:21,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1845760993, now seen corresponding path program 1 times [2022-11-18 18:47:21,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:21,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417684867] [2022-11-18 18:47:21,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:21,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:21,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:21,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:21,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417684867] [2022-11-18 18:47:21,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417684867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:21,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:21,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:47:21,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963329576] [2022-11-18 18:47:21,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:21,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:47:21,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:21,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:47:21,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:47:21,765 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 242 [2022-11-18 18:47:21,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 242 transitions, 514 flow. Second operand has 2 states, 2 states have (on average 212.5) internal successors, (425), 2 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:21,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:21,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 242 [2022-11-18 18:47:21,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:21,879 INFO L130 PetriNetUnfolder]: 20/462 cut-off events. [2022-11-18 18:47:21,879 INFO L131 PetriNetUnfolder]: For 55/77 co-relation queries the response was YES. [2022-11-18 18:47:21,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 462 events. 20/462 cut-off events. For 55/77 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1724 event pairs, 1 based on Foata normal form. 104/512 useless extension candidates. Maximal degree in co-relation 316. Up to 16 conditions per place. [2022-11-18 18:47:21,885 INFO L137 encePairwiseOnDemand]: 219/242 looper letters, 6 selfloop transitions, 0 changer transitions 0/218 dead transitions. [2022-11-18 18:47:21,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 218 transitions, 478 flow [2022-11-18 18:47:21,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:47:21,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 18:47:21,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 453 transitions. [2022-11-18 18:47:21,888 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9359504132231405 [2022-11-18 18:47:21,888 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 453 transitions. [2022-11-18 18:47:21,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 453 transitions. [2022-11-18 18:47:21,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:21,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 453 transitions. [2022-11-18 18:47:21,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 226.5) internal successors, (453), 2 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:21,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:21,892 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:21,892 INFO L175 Difference]: Start difference. First operand has 220 places, 242 transitions, 514 flow. Second operand 2 states and 453 transitions. [2022-11-18 18:47:21,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 218 transitions, 478 flow [2022-11-18 18:47:21,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 218 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:47:21,898 INFO L231 Difference]: Finished difference. Result has 220 places, 218 transitions, 466 flow [2022-11-18 18:47:21,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=466, PETRI_PLACES=220, PETRI_TRANSITIONS=218} [2022-11-18 18:47:21,899 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 0 predicate places. [2022-11-18 18:47:21,900 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 218 transitions, 466 flow [2022-11-18 18:47:21,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 212.5) internal successors, (425), 2 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:21,900 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:21,900 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:21,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:47:21,901 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)] === [2022-11-18 18:47:21,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:21,901 INFO L85 PathProgramCache]: Analyzing trace with hash 38306530, now seen corresponding path program 1 times [2022-11-18 18:47:21,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:21,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417095121] [2022-11-18 18:47:21,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:21,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:21,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:21,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:21,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417095121] [2022-11-18 18:47:21,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417095121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:21,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:21,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:21,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235210323] [2022-11-18 18:47:21,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:21,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:21,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:21,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:21,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:21,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 242 [2022-11-18 18:47:21,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 218 transitions, 466 flow. Second operand has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:21,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:21,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 242 [2022-11-18 18:47:21,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:22,135 INFO L130 PetriNetUnfolder]: 16/434 cut-off events. [2022-11-18 18:47:22,135 INFO L131 PetriNetUnfolder]: For 77/224 co-relation queries the response was YES. [2022-11-18 18:47:22,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 434 events. 16/434 cut-off events. For 77/224 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1578 event pairs, 1 based on Foata normal form. 1/387 useless extension candidates. Maximal degree in co-relation 492. Up to 30 conditions per place. [2022-11-18 18:47:22,141 INFO L137 encePairwiseOnDemand]: 239/242 looper letters, 15 selfloop transitions, 2 changer transitions 0/222 dead transitions. [2022-11-18 18:47:22,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 222 transitions, 508 flow [2022-11-18 18:47:22,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:47:22,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:47:22,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 633 transitions. [2022-11-18 18:47:22,144 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.871900826446281 [2022-11-18 18:47:22,144 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 633 transitions. [2022-11-18 18:47:22,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 633 transitions. [2022-11-18 18:47:22,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:22,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 633 transitions. [2022-11-18 18:47:22,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:22,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:22,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:22,149 INFO L175 Difference]: Start difference. First operand has 220 places, 218 transitions, 466 flow. Second operand 3 states and 633 transitions. [2022-11-18 18:47:22,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 222 transitions, 508 flow [2022-11-18 18:47:22,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 222 transitions, 508 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:47:22,160 INFO L231 Difference]: Finished difference. Result has 223 places, 219 transitions, 478 flow [2022-11-18 18:47:22,161 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=478, PETRI_PLACES=223, PETRI_TRANSITIONS=219} [2022-11-18 18:47:22,162 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 3 predicate places. [2022-11-18 18:47:22,162 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 219 transitions, 478 flow [2022-11-18 18:47:22,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:22,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:22,163 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:22,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:47:22,163 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)] === [2022-11-18 18:47:22,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:22,164 INFO L85 PathProgramCache]: Analyzing trace with hash -165653458, now seen corresponding path program 1 times [2022-11-18 18:47:22,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:22,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895441455] [2022-11-18 18:47:22,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:22,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:22,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:22,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895441455] [2022-11-18 18:47:22,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895441455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:22,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:22,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:47:22,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480806243] [2022-11-18 18:47:22,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:22,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:22,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:22,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:22,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:22,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 242 [2022-11-18 18:47:22,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 219 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:22,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:22,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 242 [2022-11-18 18:47:22,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:41,338 INFO L130 PetriNetUnfolder]: 37205/124918 cut-off events. [2022-11-18 18:47:41,338 INFO L131 PetriNetUnfolder]: For 9774/13519 co-relation queries the response was YES. [2022-11-18 18:47:42,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180145 conditions, 124918 events. 37205/124918 cut-off events. For 9774/13519 co-relation queries the response was YES. Maximal size of possible extension queue 3377. Compared 1882181 event pairs, 14620 based on Foata normal form. 59/104275 useless extension candidates. Maximal degree in co-relation 180137. Up to 29758 conditions per place. [2022-11-18 18:47:42,908 INFO L137 encePairwiseOnDemand]: 215/242 looper letters, 62 selfloop transitions, 20 changer transitions 0/256 dead transitions. [2022-11-18 18:47:42,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 256 transitions, 737 flow [2022-11-18 18:47:42,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:47:42,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:47:42,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2022-11-18 18:47:42,912 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.837465564738292 [2022-11-18 18:47:42,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2022-11-18 18:47:42,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2022-11-18 18:47:42,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:42,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2022-11-18 18:47:42,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:42,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:42,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:42,920 INFO L175 Difference]: Start difference. First operand has 223 places, 219 transitions, 478 flow. Second operand 3 states and 608 transitions. [2022-11-18 18:47:42,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 256 transitions, 737 flow [2022-11-18 18:47:42,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 256 transitions, 735 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:47:42,957 INFO L231 Difference]: Finished difference. Result has 226 places, 239 transitions, 650 flow [2022-11-18 18:47:42,957 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=226, PETRI_TRANSITIONS=239} [2022-11-18 18:47:42,958 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 6 predicate places. [2022-11-18 18:47:42,958 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 239 transitions, 650 flow [2022-11-18 18:47:42,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:42,959 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:42,959 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:42,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:47:42,960 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)] === [2022-11-18 18:47:42,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:42,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1192467965, now seen corresponding path program 1 times [2022-11-18 18:47:42,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:42,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887439791] [2022-11-18 18:47:42,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:42,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:43,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:43,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887439791] [2022-11-18 18:47:43,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887439791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:43,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:43,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:47:43,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212732678] [2022-11-18 18:47:43,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:43,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:43,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:43,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:43,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:43,058 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 242 [2022-11-18 18:47:43,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 239 transitions, 650 flow. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:43,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:43,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 242 [2022-11-18 18:47:43,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:48:04,088 INFO L130 PetriNetUnfolder]: 46616/146797 cut-off events. [2022-11-18 18:48:04,088 INFO L131 PetriNetUnfolder]: For 65423/75854 co-relation queries the response was YES. [2022-11-18 18:48:05,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275729 conditions, 146797 events. 46616/146797 cut-off events. For 65423/75854 co-relation queries the response was YES. Maximal size of possible extension queue 3894. Compared 2205196 event pairs, 21379 based on Foata normal form. 228/130100 useless extension candidates. Maximal degree in co-relation 275720. Up to 59402 conditions per place. [2022-11-18 18:48:05,963 INFO L137 encePairwiseOnDemand]: 229/242 looper letters, 92 selfloop transitions, 22 changer transitions 0/286 dead transitions. [2022-11-18 18:48:05,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 286 transitions, 1084 flow [2022-11-18 18:48:05,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:05,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:48:05,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2022-11-18 18:48:05,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-11-18 18:48:05,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2022-11-18 18:48:05,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2022-11-18 18:48:05,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:05,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2022-11-18 18:48:05,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:05,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:05,971 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:05,971 INFO L175 Difference]: Start difference. First operand has 226 places, 239 transitions, 650 flow. Second operand 3 states and 594 transitions. [2022-11-18 18:48:05,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 286 transitions, 1084 flow [2022-11-18 18:48:06,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 286 transitions, 1016 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:48:06,063 INFO L231 Difference]: Finished difference. Result has 228 places, 259 transitions, 816 flow [2022-11-18 18:48:06,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=816, PETRI_PLACES=228, PETRI_TRANSITIONS=259} [2022-11-18 18:48:06,065 INFO L288 CegarLoopForPetriNet]: 220 programPoint places, 8 predicate places. [2022-11-18 18:48:06,065 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 259 transitions, 816 flow [2022-11-18 18:48:06,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:06,065 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:06,066 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:06,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:48:06,066 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:48:06,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:06,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1283263491, now seen corresponding path program 1 times [2022-11-18 18:48:06,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:06,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869626360] [2022-11-18 18:48:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:06,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:06,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:06,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869626360] [2022-11-18 18:48:06,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869626360] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:48:06,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119669274] [2022-11-18 18:48:06,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:06,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:06,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:06,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:06,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba89037-2e6e-419a-8b7b-37b1c8bb1b91/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:48:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:06,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:48:06,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:48:06,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:48:06,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119669274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:06,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:48:06,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 18:48:06,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193915897] [2022-11-18 18:48:06,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:06,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:06,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:06,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:06,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:48:06,348 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 242 [2022-11-18 18:48:06,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 259 transitions, 816 flow. Second operand has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:06,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:06,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 242 [2022-11-18 18:48:06,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand