./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 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_2034f49c-bebf-41de-ba02-d73641fd4035/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034f49c-bebf-41de-ba02-d73641fd4035/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034f49c-bebf-41de-ba02-d73641fd4035/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034f49c-bebf-41de-ba02-d73641fd4035/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034f49c-bebf-41de-ba02-d73641fd4035/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034f49c-bebf-41de-ba02-d73641fd4035/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --- 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-2329fc7 [2022-12-14 07:39:35,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:39:35,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:39:35,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:39:35,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:39:35,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:39:35,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:39:35,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:39:35,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:39:35,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:39:35,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:39:35,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:39:35,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:39:35,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:39:35,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:39:35,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:39:35,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:39:35,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:39:35,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:39:35,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:39:35,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:39:35,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:39:35,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:39:35,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:39:35,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:39:35,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:39:35,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:39:35,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:39:35,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:39:35,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:39:35,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:39:35,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:39:35,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:39:35,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:39:35,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:39:35,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:39:35,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:39:35,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:39:35,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:39:35,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:39:35,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:39:35,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034f49c-bebf-41de-ba02-d73641fd4035/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-12-14 07:39:35,318 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:39:35,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:39:35,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:39:35,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:39:35,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:39:35,319 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:39:35,319 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:39:35,319 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:39:35,319 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:39:35,319 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:39:35,320 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:39:35,320 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:39:35,320 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:39:35,320 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:39:35,320 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:39:35,320 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:39:35,320 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:39:35,320 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:39:35,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:39:35,321 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:39:35,321 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 07:39:35,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:39:35,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:39:35,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:39:35,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:39:35,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:39:35,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:39:35,322 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-14 07:39:35,322 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:39:35,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:39:35,322 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:39:35,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:39:35,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:39:35,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:39:35,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:39:35,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:39:35,322 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:39:35,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:39:35,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:39:35,323 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:39:35,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:39:35,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:39:35,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:39:35,323 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_2034f49c-bebf-41de-ba02-d73641fd4035/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034f49c-bebf-41de-ba02-d73641fd4035/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 [2022-12-14 07:39:35,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:39:35,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:39:35,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:39:35,552 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:39:35,552 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:39:35,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034f49c-bebf-41de-ba02-d73641fd4035/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2022-12-14 07:39:38,193 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:39:38,370 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:39:38,371 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034f49c-bebf-41de-ba02-d73641fd4035/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2022-12-14 07:39:38,382 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034f49c-bebf-41de-ba02-d73641fd4035/bin/utaipan-gh47qXpMRh/data/92abff1d3/3e5b437e57e34b07817c5f581c3cfa39/FLAGc2f80fbe3 [2022-12-14 07:39:38,395 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034f49c-bebf-41de-ba02-d73641fd4035/bin/utaipan-gh47qXpMRh/data/92abff1d3/3e5b437e57e34b07817c5f581c3cfa39 [2022-12-14 07:39:38,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:39:38,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:39:38,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:39:38,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:39:38,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:39:38,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:39:38" (1/1) ... [2022-12-14 07:39:38,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8f98d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:38, skipping insertion in model container [2022-12-14 07:39:38,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:39:38" (1/1) ... [2022-12-14 07:39:38,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:39:38,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:39:38,695 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034f49c-bebf-41de-ba02-d73641fd4035/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i[30176,30189] [2022-12-14 07:39:38,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:39:38,724 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:39:38,752 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034f49c-bebf-41de-ba02-d73641fd4035/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i[30176,30189] [2022-12-14 07:39:38,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:39:38,786 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:39:38,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:38 WrapperNode [2022-12-14 07:39:38,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:39:38,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:39:38,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:39:38,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:39:38,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:38" (1/1) ... [2022-12-14 07:39:38,805 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:38" (1/1) ... [2022-12-14 07:39:38,824 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2022-12-14 07:39:38,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:39:38,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:39:38,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:39:38,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:39:38,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:38" (1/1) ... [2022-12-14 07:39:38,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:38" (1/1) ... [2022-12-14 07:39:38,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:38" (1/1) ... [2022-12-14 07:39:38,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:38" (1/1) ... [2022-12-14 07:39:38,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:38" (1/1) ... [2022-12-14 07:39:38,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:38" (1/1) ... [2022-12-14 07:39:38,850 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:38" (1/1) ... [2022-12-14 07:39:38,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:38" (1/1) ... [2022-12-14 07:39:38,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:39:38,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:39:38,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:39:38,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:39:38,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:38" (1/1) ... [2022-12-14 07:39:38,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:39:38,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034f49c-bebf-41de-ba02-d73641fd4035/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:39:38,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034f49c-bebf-41de-ba02-d73641fd4035/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:39:38,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2034f49c-bebf-41de-ba02-d73641fd4035/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:39:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 07:39:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 07:39:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 07:39:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:39:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 07:39:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-14 07:39:38,910 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-14 07:39:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 07:39:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:39:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:39:38,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:39:38,912 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 07:39:39,016 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:39:39,017 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:39:39,226 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:39:39,232 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:39:39,232 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-14 07:39:39,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:39:39 BoogieIcfgContainer [2022-12-14 07:39:39,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:39:39,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:39:39,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:39:39,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:39:39,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:39:38" (1/3) ... [2022-12-14 07:39:39,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b261ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:39:39, skipping insertion in model container [2022-12-14 07:39:39,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:39:38" (2/3) ... [2022-12-14 07:39:39,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b261ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:39:39, skipping insertion in model container [2022-12-14 07:39:39,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:39:39" (3/3) ... [2022-12-14 07:39:39,240 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2022-12-14 07:39:39,246 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 07:39:39,254 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:39:39,254 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 07:39:39,254 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 07:39:39,296 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-14 07:39:39,320 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 07:39:39,331 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 143 transitions, 294 flow [2022-12-14 07:39:39,333 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 143 transitions, 294 flow [2022-12-14 07:39:39,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 143 transitions, 294 flow [2022-12-14 07:39:39,395 INFO L130 PetriNetUnfolder]: 18/187 cut-off events. [2022-12-14 07:39:39,396 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-14 07:39:39,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 187 events. 18/187 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 522 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2022-12-14 07:39:39,406 INFO L119 LiptonReduction]: Number of co-enabled transitions 4400 [2022-12-14 07:39:43,534 INFO L134 LiptonReduction]: Checked pairs total: 10377 [2022-12-14 07:39:43,534 INFO L136 LiptonReduction]: Total number of compositions: 138 [2022-12-14 07:39:43,539 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 45 transitions, 98 flow [2022-12-14 07:39:43,561 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 314 states, 287 states have (on average 2.480836236933798) internal successors, (712), 313 states have internal predecessors, (712), 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) [2022-12-14 07:39:43,573 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:39:43,578 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=FINITE_AUTOMATA, 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;@554caf28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:39:43,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-14 07:39:43,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 314 states, 287 states have (on average 2.480836236933798) internal successors, (712), 313 states have internal predecessors, (712), 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) [2022-12-14 07:39:43,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 07:39:43,583 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:43,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 07:39:43,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-12-14 07:39:43,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:43,587 INFO L85 PathProgramCache]: Analyzing trace with hash 17070160, now seen corresponding path program 1 times [2022-12-14 07:39:43,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:43,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081778243] [2022-12-14 07:39:43,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:43,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:43,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:43,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081778243] [2022-12-14 07:39:43,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081778243] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:43,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:43,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:39:43,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496414176] [2022-12-14 07:39:43,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:43,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 07:39:43,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:43,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 07:39:43,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:39:43,732 INFO L87 Difference]: Start difference. First operand has 314 states, 287 states have (on average 2.480836236933798) internal successors, (712), 313 states have internal predecessors, (712), 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) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-12-14 07:39:43,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:43,776 INFO L93 Difference]: Finished difference Result 265 states and 486 transitions. [2022-12-14 07:39:43,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 07:39:43,778 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2022-12-14 07:39:43,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:43,788 INFO L225 Difference]: With dead ends: 265 [2022-12-14 07:39:43,788 INFO L226 Difference]: Without dead ends: 241 [2022-12-14 07:39:43,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:39:43,792 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:43,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:39:43,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-12-14 07:39:43,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-12-14 07:39:43,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 230 states have (on average 1.9260869565217391) internal successors, (443), 240 states have internal predecessors, (443), 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) [2022-12-14 07:39:43,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 443 transitions. [2022-12-14 07:39:43,837 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 443 transitions. Word has length 4 [2022-12-14 07:39:43,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:43,838 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 443 transitions. [2022-12-14 07:39:43,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-12-14 07:39:43,838 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 443 transitions. [2022-12-14 07:39:43,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 07:39:43,838 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:43,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 07:39:43,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:39:43,839 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)] === [2022-12-14 07:39:43,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:43,840 INFO L85 PathProgramCache]: Analyzing trace with hash 529053680, now seen corresponding path program 1 times [2022-12-14 07:39:43,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:43,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170146848] [2022-12-14 07:39:43,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:43,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:43,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:43,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:43,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170146848] [2022-12-14 07:39:43,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170146848] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:43,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:43,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:39:43,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44235500] [2022-12-14 07:39:43,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:43,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:39:43,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:43,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:39:43,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:39:43,911 INFO L87 Difference]: Start difference. First operand 241 states and 443 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-12-14 07:39:43,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:43,960 INFO L93 Difference]: Finished difference Result 286 states and 515 transitions. [2022-12-14 07:39:43,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:39:43,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2022-12-14 07:39:43,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:43,961 INFO L225 Difference]: With dead ends: 286 [2022-12-14 07:39:43,961 INFO L226 Difference]: Without dead ends: 274 [2022-12-14 07:39:43,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:39:43,962 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:43,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 19 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:39:43,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-12-14 07:39:43,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 232. [2022-12-14 07:39:43,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 222 states have (on average 1.9054054054054055) internal successors, (423), 231 states have internal predecessors, (423), 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) [2022-12-14 07:39:43,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 423 transitions. [2022-12-14 07:39:43,971 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 423 transitions. Word has length 5 [2022-12-14 07:39:43,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:43,971 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 423 transitions. [2022-12-14 07:39:43,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-12-14 07:39:43,971 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 423 transitions. [2022-12-14 07:39:43,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 07:39:43,972 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:43,972 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 07:39:43,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:39:43,972 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-12-14 07:39:43,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:43,972 INFO L85 PathProgramCache]: Analyzing trace with hash -761494139, now seen corresponding path program 1 times [2022-12-14 07:39:43,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:43,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210033293] [2022-12-14 07:39:43,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:43,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:39:43,994 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:39:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:39:44,020 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 07:39:44,021 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 07:39:44,021 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-12-14 07:39:44,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-12-14 07:39:44,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-12-14 07:39:44,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-12-14 07:39:44,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-12-14 07:39:44,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-12-14 07:39:44,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-12-14 07:39:44,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-12-14 07:39:44,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-12-14 07:39:44,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-12-14 07:39:44,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-12-14 07:39:44,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:39:44,025 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 07:39:44,027 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 07:39:44,027 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-14 07:39:44,042 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 07:39:44,044 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 07:39:44,044 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 189 transitions, 396 flow [2022-12-14 07:39:44,044 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 189 transitions, 396 flow [2022-12-14 07:39:44,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 189 transitions, 396 flow [2022-12-14 07:39:44,080 INFO L130 PetriNetUnfolder]: 32/308 cut-off events. [2022-12-14 07:39:44,080 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-14 07:39:44,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 308 events. 32/308 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1047 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2022-12-14 07:39:44,089 INFO L119 LiptonReduction]: Number of co-enabled transitions 13640 [2022-12-14 07:39:48,402 INFO L134 LiptonReduction]: Checked pairs total: 58546 [2022-12-14 07:39:48,402 INFO L136 LiptonReduction]: Total number of compositions: 165 [2022-12-14 07:39:48,403 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 82 transitions, 182 flow [2022-12-14 07:39:48,593 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9783 states, 9631 states have (on average 3.4652684041117228) internal successors, (33374), 9782 states have internal predecessors, (33374), 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) [2022-12-14 07:39:48,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:39:48,595 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=FINITE_AUTOMATA, 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;@554caf28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:39:48,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-14 07:39:48,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 9783 states, 9631 states have (on average 3.4652684041117228) internal successors, (33374), 9782 states have internal predecessors, (33374), 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) [2022-12-14 07:39:48,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 07:39:48,617 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:48,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 07:39:48,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-14 07:39:48,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:48,618 INFO L85 PathProgramCache]: Analyzing trace with hash 29131529, now seen corresponding path program 1 times [2022-12-14 07:39:48,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:48,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032844851] [2022-12-14 07:39:48,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:48,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:48,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:48,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:48,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032844851] [2022-12-14 07:39:48,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032844851] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:48,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:48,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:39:48,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861044120] [2022-12-14 07:39:48,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:48,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 07:39:48,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:48,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 07:39:48,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:39:48,671 INFO L87 Difference]: Start difference. First operand has 9783 states, 9631 states have (on average 3.4652684041117228) internal successors, (33374), 9782 states have internal predecessors, (33374), 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) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-12-14 07:39:48,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:48,810 INFO L93 Difference]: Finished difference Result 9158 states and 25651 transitions. [2022-12-14 07:39:48,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 07:39:48,810 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2022-12-14 07:39:48,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:48,861 INFO L225 Difference]: With dead ends: 9158 [2022-12-14 07:39:48,862 INFO L226 Difference]: Without dead ends: 9058 [2022-12-14 07:39:48,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:39:48,862 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:48,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:39:48,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9058 states. [2022-12-14 07:39:49,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9058 to 9058. [2022-12-14 07:39:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9058 states, 8946 states have (on average 2.839145987033311) internal successors, (25399), 9057 states have internal predecessors, (25399), 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) [2022-12-14 07:39:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9058 states to 9058 states and 25399 transitions. [2022-12-14 07:39:49,131 INFO L78 Accepts]: Start accepts. Automaton has 9058 states and 25399 transitions. Word has length 4 [2022-12-14 07:39:49,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:49,131 INFO L495 AbstractCegarLoop]: Abstraction has 9058 states and 25399 transitions. [2022-12-14 07:39:49,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-12-14 07:39:49,132 INFO L276 IsEmpty]: Start isEmpty. Operand 9058 states and 25399 transitions. [2022-12-14 07:39:49,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 07:39:49,132 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:49,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 07:39:49,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 07:39:49,132 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)] === [2022-12-14 07:39:49,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:49,133 INFO L85 PathProgramCache]: Analyzing trace with hash 902899437, now seen corresponding path program 1 times [2022-12-14 07:39:49,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:49,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10959499] [2022-12-14 07:39:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:49,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:49,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:49,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10959499] [2022-12-14 07:39:49,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10959499] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:49,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:49,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:39:49,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529122822] [2022-12-14 07:39:49,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:49,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:39:49,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:49,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:39:49,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:39:49,155 INFO L87 Difference]: Start difference. First operand 9058 states and 25399 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-12-14 07:39:49,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:39:49,313 INFO L93 Difference]: Finished difference Result 12550 states and 34039 transitions. [2022-12-14 07:39:49,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:39:49,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2022-12-14 07:39:49,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:39:49,361 INFO L225 Difference]: With dead ends: 12550 [2022-12-14 07:39:49,361 INFO L226 Difference]: Without dead ends: 12511 [2022-12-14 07:39:49,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:39:49,362 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 51 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:39:49,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 49 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:39:49,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12511 states. [2022-12-14 07:39:49,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12511 to 9354. [2022-12-14 07:39:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9354 states, 9261 states have (on average 2.7816650469711695) internal successors, (25761), 9353 states have internal predecessors, (25761), 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) [2022-12-14 07:39:49,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9354 states to 9354 states and 25761 transitions. [2022-12-14 07:39:49,679 INFO L78 Accepts]: Start accepts. Automaton has 9354 states and 25761 transitions. Word has length 5 [2022-12-14 07:39:49,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:39:49,679 INFO L495 AbstractCegarLoop]: Abstraction has 9354 states and 25761 transitions. [2022-12-14 07:39:49,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-12-14 07:39:49,679 INFO L276 IsEmpty]: Start isEmpty. Operand 9354 states and 25761 transitions. [2022-12-14 07:39:49,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 07:39:49,680 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:49,680 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 07:39:49,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 07:39:49,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-14 07:39:49,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:49,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2058098233, now seen corresponding path program 1 times [2022-12-14 07:39:49,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:49,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391236527] [2022-12-14 07:39:49,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:49,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:39:49,699 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:39:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:39:49,717 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 07:39:49,717 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 07:39:49,718 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-12-14 07:39:49,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-12-14 07:39:49,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-12-14 07:39:49,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-12-14 07:39:49,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-12-14 07:39:49,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-12-14 07:39:49,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-12-14 07:39:49,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-12-14 07:39:49,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-12-14 07:39:49,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-12-14 07:39:49,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-12-14 07:39:49,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-12-14 07:39:49,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-12-14 07:39:49,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-12-14 07:39:49,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-12-14 07:39:49,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 07:39:49,720 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 07:39:49,721 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 07:39:49,721 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-14 07:39:49,754 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-14 07:39:49,757 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 07:39:49,757 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 235 transitions, 500 flow [2022-12-14 07:39:49,757 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 235 transitions, 500 flow [2022-12-14 07:39:49,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 235 transitions, 500 flow [2022-12-14 07:39:49,848 INFO L130 PetriNetUnfolder]: 51/474 cut-off events. [2022-12-14 07:39:49,848 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-14 07:39:49,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 474 events. 51/474 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1808 event pairs, 1 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 316. Up to 16 conditions per place. [2022-12-14 07:39:49,873 INFO L119 LiptonReduction]: Number of co-enabled transitions 26664 [2022-12-14 07:39:54,156 INFO L134 LiptonReduction]: Checked pairs total: 128547 [2022-12-14 07:39:54,156 INFO L136 LiptonReduction]: Total number of compositions: 196 [2022-12-14 07:39:54,157 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 97 places, 113 transitions, 256 flow [2022-12-14 07:39:58,613 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 238599 states, 237762 states have (on average 4.615123526888233) internal successors, (1097301), 238598 states have internal predecessors, (1097301), 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) [2022-12-14 07:39:58,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:39:58,614 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=FINITE_AUTOMATA, 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;@554caf28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:39:58,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-12-14 07:39:58,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 238599 states, 237762 states have (on average 4.615123526888233) internal successors, (1097301), 238598 states have internal predecessors, (1097301), 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) [2022-12-14 07:39:58,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 07:39:58,911 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:39:58,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 07:39:58,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-14 07:39:58,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:39:58,912 INFO L85 PathProgramCache]: Analyzing trace with hash 43685341, now seen corresponding path program 1 times [2022-12-14 07:39:58,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:39:58,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895585573] [2022-12-14 07:39:58,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:39:58,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:39:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:39:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:39:58,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:39:58,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895585573] [2022-12-14 07:39:58,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895585573] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:39:58,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:39:58,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:39:58,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084576197] [2022-12-14 07:39:58,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:39:58,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 07:39:58,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:39:58,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 07:39:58,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:39:59,217 INFO L87 Difference]: Start difference. First operand has 238599 states, 237762 states have (on average 4.615123526888233) internal successors, (1097301), 238598 states have internal predecessors, (1097301), 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) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-12-14 07:40:01,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:40:01,523 INFO L93 Difference]: Finished difference Result 222974 states and 835287 transitions. [2022-12-14 07:40:01,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 07:40:01,524 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2022-12-14 07:40:01,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:40:02,839 INFO L225 Difference]: With dead ends: 222974 [2022-12-14 07:40:02,839 INFO L226 Difference]: Without dead ends: 222589 [2022-12-14 07:40:02,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:40:02,840 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:40:02,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:40:03,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222589 states. [2022-12-14 07:40:08,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222589 to 222589. [2022-12-14 07:40:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222589 states, 221976 states have (on average 3.7572260064151077) internal successors, (834014), 222588 states have internal predecessors, (834014), 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) [2022-12-14 07:40:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222589 states to 222589 states and 834014 transitions. [2022-12-14 07:40:10,136 INFO L78 Accepts]: Start accepts. Automaton has 222589 states and 834014 transitions. Word has length 4 [2022-12-14 07:40:10,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:40:10,137 INFO L495 AbstractCegarLoop]: Abstraction has 222589 states and 834014 transitions. [2022-12-14 07:40:10,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-12-14 07:40:10,137 INFO L276 IsEmpty]: Start isEmpty. Operand 222589 states and 834014 transitions. [2022-12-14 07:40:10,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 07:40:10,137 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:40:10,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 07:40:10,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 07:40:10,138 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)] === [2022-12-14 07:40:10,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:40:10,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1354195791, now seen corresponding path program 1 times [2022-12-14 07:40:10,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:40:10,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507054968] [2022-12-14 07:40:10,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:40:10,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:40:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:40:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:40:10,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:40:10,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507054968] [2022-12-14 07:40:10,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507054968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:40:10,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:40:10,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:40:10,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859196850] [2022-12-14 07:40:10,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:40:10,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:40:10,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:40:10,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:40:10,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:40:10,167 INFO L87 Difference]: Start difference. First operand 222589 states and 834014 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-12-14 07:40:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:40:13,424 INFO L93 Difference]: Finished difference Result 360728 states and 1300755 transitions. [2022-12-14 07:40:13,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:40:13,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2022-12-14 07:40:13,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:40:15,396 INFO L225 Difference]: With dead ends: 360728 [2022-12-14 07:40:15,396 INFO L226 Difference]: Without dead ends: 360608 [2022-12-14 07:40:15,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:40:15,397 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 70 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:40:15,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 67 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:40:16,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360608 states. [2022-12-14 07:40:22,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360608 to 257666. [2022-12-14 07:40:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257666 states, 257092 states have (on average 3.6817753955782364) internal successors, (946555), 257665 states have internal predecessors, (946555), 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) [2022-12-14 07:40:24,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257666 states to 257666 states and 946555 transitions. [2022-12-14 07:40:24,312 INFO L78 Accepts]: Start accepts. Automaton has 257666 states and 946555 transitions. Word has length 5 [2022-12-14 07:40:24,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:40:24,312 INFO L495 AbstractCegarLoop]: Abstraction has 257666 states and 946555 transitions. [2022-12-14 07:40:24,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-12-14 07:40:24,312 INFO L276 IsEmpty]: Start isEmpty. Operand 257666 states and 946555 transitions. [2022-12-14 07:40:24,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 07:40:24,313 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:40:24,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:40:24,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 07:40:24,314 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-14 07:40:24,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:40:24,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1981119945, now seen corresponding path program 1 times [2022-12-14 07:40:24,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:40:24,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077180694] [2022-12-14 07:40:24,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:40:24,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:40:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:40:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:40:24,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:40:24,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077180694] [2022-12-14 07:40:24,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077180694] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:40:24,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:40:24,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:40:24,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009790618] [2022-12-14 07:40:24,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:40:24,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:40:24,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:40:24,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:40:24,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:40:24,344 INFO L87 Difference]: Start difference. First operand 257666 states and 946555 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-12-14 07:40:26,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:40:26,406 INFO L93 Difference]: Finished difference Result 275055 states and 1010241 transitions. [2022-12-14 07:40:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:40:26,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) Word has length 12 [2022-12-14 07:40:26,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:40:27,838 INFO L225 Difference]: With dead ends: 275055 [2022-12-14 07:40:27,839 INFO L226 Difference]: Without dead ends: 275055 [2022-12-14 07:40:27,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:40:27,839 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 58 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:40:27,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 74 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:40:28,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275055 states. [2022-12-14 07:40:33,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275055 to 265262. [2022-12-14 07:40:34,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265262 states, 264699 states have (on average 3.679371663663255) internal successors, (973926), 265261 states have internal predecessors, (973926), 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) [2022-12-14 07:40:35,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265262 states to 265262 states and 973926 transitions. [2022-12-14 07:40:35,922 INFO L78 Accepts]: Start accepts. Automaton has 265262 states and 973926 transitions. Word has length 12 [2022-12-14 07:40:35,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:40:35,922 INFO L495 AbstractCegarLoop]: Abstraction has 265262 states and 973926 transitions. [2022-12-14 07:40:35,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-12-14 07:40:35,923 INFO L276 IsEmpty]: Start isEmpty. Operand 265262 states and 973926 transitions. [2022-12-14 07:40:35,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 07:40:35,925 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:40:35,926 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-14 07:40:35,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 07:40:35,926 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 16 more)] === [2022-12-14 07:40:35,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:40:35,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1603189627, now seen corresponding path program 1 times [2022-12-14 07:40:35,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:40:35,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472851777] [2022-12-14 07:40:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:40:35,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:40:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:40:35,944 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:40:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:40:35,961 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 07:40:35,961 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 07:40:35,961 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-12-14 07:40:35,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-12-14 07:40:35,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-12-14 07:40:35,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-12-14 07:40:35,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-12-14 07:40:35,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-12-14 07:40:35,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-12-14 07:40:35,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-12-14 07:40:35,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-12-14 07:40:35,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-12-14 07:40:35,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-12-14 07:40:35,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-12-14 07:40:35,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-12-14 07:40:35,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-12-14 07:40:35,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-12-14 07:40:35,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-12-14 07:40:35,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-12-14 07:40:35,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-12-14 07:40:35,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-12-14 07:40:35,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 07:40:35,963 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-14 07:40:35,964 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 07:40:35,964 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-14 07:40:35,979 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-14 07:40:35,982 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 07:40:35,982 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 281 transitions, 606 flow [2022-12-14 07:40:35,982 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 281 transitions, 606 flow [2022-12-14 07:40:35,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 281 transitions, 606 flow [2022-12-14 07:40:36,075 INFO L130 PetriNetUnfolder]: 82/732 cut-off events. [2022-12-14 07:40:36,075 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-14 07:40:36,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 732 events. 82/732 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3186 event pairs, 6 based on Foata normal form. 0/613 useless extension candidates. Maximal degree in co-relation 494. Up to 32 conditions per place. [2022-12-14 07:40:36,101 INFO L119 LiptonReduction]: Number of co-enabled transitions 43824 [2022-12-14 07:40:40,622 INFO L134 LiptonReduction]: Checked pairs total: 220998 [2022-12-14 07:40:40,622 INFO L136 LiptonReduction]: Total number of compositions: 228 [2022-12-14 07:40:40,623 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 123 places, 144 transitions, 332 flow