./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89cf6444-c358-4a33-8076-8481b3b2af2c/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89cf6444-c358-4a33-8076-8481b3b2af2c/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89cf6444-c358-4a33-8076-8481b3b2af2c/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89cf6444-c358-4a33-8076-8481b3b2af2c/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89cf6444-c358-4a33-8076-8481b3b2af2c/bin/utaipan-I9t0OCRTmS/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89cf6444-c358-4a33-8076-8481b3b2af2c/bin/utaipan-I9t0OCRTmS --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 cb0da49952f084f4179c44b957c91689c392bf769782a6b0853667237fdff1db --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:31:43,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:31:43,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:31:43,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:31:43,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:31:43,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:31:43,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:31:43,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:31:43,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:31:43,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:31:43,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:31:43,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:31:43,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:31:43,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:31:43,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:31:43,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:31:43,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:31:43,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:31:43,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:31:43,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:31:43,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:31:43,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:31:43,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:31:43,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:31:43,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:31:43,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:31:43,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:31:43,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:31:43,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:31:43,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:31:43,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:31:43,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:31:43,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:31:43,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:31:43,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:31:43,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:31:43,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:31:43,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:31:43,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:31:43,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:31:43,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:31:43,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89cf6444-c358-4a33-8076-8481b3b2af2c/bin/utaipan-I9t0OCRTmS/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-19 07:31:43,450 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:31:43,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:31:43,451 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:31:43,451 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:31:43,452 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:31:43,452 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:31:43,452 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:31:43,452 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:31:43,452 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:31:43,453 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:31:43,453 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:31:43,453 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:31:43,453 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:31:43,454 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:31:43,454 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:31:43,454 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:31:43,455 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:31:43,466 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:31:43,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:31:43,467 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:31:43,467 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:31:43,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:31:43,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:31:43,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:31:43,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:31:43,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:31:43,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:31:43,470 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-19 07:31:43,471 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:31:43,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:31:43,471 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:31:43,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:31:43,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:31:43,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:31:43,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:31:43,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:31:43,474 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:31:43,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:31:43,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:31:43,474 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:31:43,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:31:43,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:31:43,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:31:43,475 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_89cf6444-c358-4a33-8076-8481b3b2af2c/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89cf6444-c358-4a33-8076-8481b3b2af2c/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb0da49952f084f4179c44b957c91689c392bf769782a6b0853667237fdff1db [2022-11-19 07:31:43,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:31:43,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:31:43,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:31:43,838 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:31:43,839 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:31:43,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89cf6444-c358-4a33-8076-8481b3b2af2c/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs-b.i [2022-11-19 07:31:43,933 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89cf6444-c358-4a33-8076-8481b3b2af2c/bin/utaipan-I9t0OCRTmS/data/b51542b37/07576ab80f964710a8eedb8fd9fca6d6/FLAG374cd1ad5 [2022-11-19 07:31:44,511 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:31:44,515 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89cf6444-c358-4a33-8076-8481b3b2af2c/sv-benchmarks/c/pthread-ext/46_monabsex2_vs-b.i [2022-11-19 07:31:44,531 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89cf6444-c358-4a33-8076-8481b3b2af2c/bin/utaipan-I9t0OCRTmS/data/b51542b37/07576ab80f964710a8eedb8fd9fca6d6/FLAG374cd1ad5 [2022-11-19 07:31:44,757 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89cf6444-c358-4a33-8076-8481b3b2af2c/bin/utaipan-I9t0OCRTmS/data/b51542b37/07576ab80f964710a8eedb8fd9fca6d6 [2022-11-19 07:31:44,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:31:44,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:31:44,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:31:44,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:31:44,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:31:44,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:31:44" (1/1) ... [2022-11-19 07:31:44,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290f5d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:44, skipping insertion in model container [2022-11-19 07:31:44,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:31:44" (1/1) ... [2022-11-19 07:31:44,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:31:44,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:31:45,236 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89cf6444-c358-4a33-8076-8481b3b2af2c/sv-benchmarks/c/pthread-ext/46_monabsex2_vs-b.i[29939,29952] [2022-11-19 07:31:45,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:31:45,257 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:31:45,313 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89cf6444-c358-4a33-8076-8481b3b2af2c/sv-benchmarks/c/pthread-ext/46_monabsex2_vs-b.i[29939,29952] [2022-11-19 07:31:45,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:31:45,363 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:31:45,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:45 WrapperNode [2022-11-19 07:31:45,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:31:45,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:31:45,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:31:45,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:31:45,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:45" (1/1) ... [2022-11-19 07:31:45,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:45" (1/1) ... [2022-11-19 07:31:45,430 INFO L138 Inliner]: procedures = 166, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2022-11-19 07:31:45,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:31:45,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:31:45,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:31:45,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:31:45,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:45" (1/1) ... [2022-11-19 07:31:45,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:45" (1/1) ... [2022-11-19 07:31:45,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:45" (1/1) ... [2022-11-19 07:31:45,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:45" (1/1) ... [2022-11-19 07:31:45,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:45" (1/1) ... [2022-11-19 07:31:45,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:45" (1/1) ... [2022-11-19 07:31:45,456 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:45" (1/1) ... [2022-11-19 07:31:45,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:45" (1/1) ... [2022-11-19 07:31:45,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:31:45,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:31:45,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:31:45,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:31:45,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:45" (1/1) ... [2022-11-19 07:31:45,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:31:45,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89cf6444-c358-4a33-8076-8481b3b2af2c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:31:45,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89cf6444-c358-4a33-8076-8481b3b2af2c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:31:45,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89cf6444-c358-4a33-8076-8481b3b2af2c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:31:45,532 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-19 07:31:45,532 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-19 07:31:45,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:31:45,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:31:45,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:31:45,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:31:45,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:31:45,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:31:45,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:31:45,534 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 07:31:45,649 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:31:45,651 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:31:45,781 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:31:45,788 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:31:45,788 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:31:45,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:31:45 BoogieIcfgContainer [2022-11-19 07:31:45,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:31:45,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:31:45,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:31:45,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:31:45,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:31:44" (1/3) ... [2022-11-19 07:31:45,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ec792a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:31:45, skipping insertion in model container [2022-11-19 07:31:45,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:45" (2/3) ... [2022-11-19 07:31:45,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ec792a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:31:45, skipping insertion in model container [2022-11-19 07:31:45,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:31:45" (3/3) ... [2022-11-19 07:31:45,800 INFO L112 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs-b.i [2022-11-19 07:31:45,808 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 07:31:45,819 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:31:45,820 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-19 07:31:45,820 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 07:31:45,910 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 07:31:45,943 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:31:45,958 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 64 transitions, 133 flow [2022-11-19 07:31:45,961 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 64 transitions, 133 flow [2022-11-19 07:31:45,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 64 transitions, 133 flow [2022-11-19 07:31:46,002 INFO L130 PetriNetUnfolder]: 4/75 cut-off events. [2022-11-19 07:31:46,002 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-19 07:31:46,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 4/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 102 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 47. Up to 4 conditions per place. [2022-11-19 07:31:46,009 INFO L119 LiptonReduction]: Number of co-enabled transitions 952 [2022-11-19 07:31:48,183 INFO L134 LiptonReduction]: Checked pairs total: 763 [2022-11-19 07:31:48,183 INFO L136 LiptonReduction]: Total number of compositions: 69 [2022-11-19 07:31:48,195 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 12 transitions, 29 flow [2022-11-19 07:31:48,213 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 37 states, 26 states have (on average 2.269230769230769) internal successors, (59), 36 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:31:48,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:31:48,248 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;@3824a15e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:31:48,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-19 07:31:48,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 26 states have (on average 2.269230769230769) internal successors, (59), 36 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:31:48,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:31:48,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:48,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:31:48,258 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-19 07:31:48,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:48,267 INFO L85 PathProgramCache]: Analyzing trace with hash 8410728, now seen corresponding path program 1 times [2022-11-19 07:31:48,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:48,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984497633] [2022-11-19 07:31:48,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:48,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:48,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:48,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:48,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984497633] [2022-11-19 07:31:48,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984497633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:48,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:48,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:31:48,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413774188] [2022-11-19 07:31:48,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:48,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:31:48,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:48,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:31:48,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:31:48,546 INFO L87 Difference]: Start difference. First operand has 37 states, 26 states have (on average 2.269230769230769) internal successors, (59), 36 states have internal predecessors, (59), 0 states have call successors, (0), 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, 1 states have (on average 4.0) 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) [2022-11-19 07:31:48,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:48,578 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2022-11-19 07:31:48,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:31:48,581 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) 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 [2022-11-19 07:31:48,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:48,589 INFO L225 Difference]: With dead ends: 11 [2022-11-19 07:31:48,590 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 07:31:48,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:31:48,595 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:48,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:31:48,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 07:31:48,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-19 07:31:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:31:48,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-11-19 07:31:48,633 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2022-11-19 07:31:48,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:48,633 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-11-19 07:31:48,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) 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) [2022-11-19 07:31:48,638 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-11-19 07:31:48,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:31:48,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:48,639 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-19 07:31:48,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:31:48,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-19 07:31:48,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:48,641 INFO L85 PathProgramCache]: Analyzing trace with hash -507223719, now seen corresponding path program 1 times [2022-11-19 07:31:48,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:48,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030699547] [2022-11-19 07:31:48,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:48,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:31:48,689 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:31:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:31:48,744 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:31:48,745 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:31:48,755 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-19 07:31:48,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-19 07:31:48,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-19 07:31:48,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-19 07:31:48,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-19 07:31:48,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-19 07:31:48,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-19 07:31:48,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-19 07:31:48,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-19 07:31:48,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-19 07:31:48,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-19 07:31:48,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:31:48,771 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 07:31:48,773 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 07:31:48,773 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-19 07:31:48,803 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 07:31:48,812 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:31:48,812 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 99 transitions, 210 flow [2022-11-19 07:31:48,813 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 99 transitions, 210 flow [2022-11-19 07:31:48,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 210 flow [2022-11-19 07:31:48,853 INFO L130 PetriNetUnfolder]: 7/123 cut-off events. [2022-11-19 07:31:48,854 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-19 07:31:48,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 123 events. 7/123 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 270 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 81. Up to 6 conditions per place. [2022-11-19 07:31:48,859 INFO L119 LiptonReduction]: Number of co-enabled transitions 4284 [2022-11-19 07:31:50,130 INFO L134 LiptonReduction]: Checked pairs total: 12876 [2022-11-19 07:31:50,130 INFO L136 LiptonReduction]: Total number of compositions: 59 [2022-11-19 07:31:50,131 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 50 places, 47 transitions, 106 flow [2022-11-19 07:31:50,257 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2381 states, 2305 states have (on average 2.8885032537960953) internal successors, (6658), 2380 states have internal predecessors, (6658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:31:50,258 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:31:50,259 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;@3824a15e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:31:50,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-19 07:31:50,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 2381 states, 2305 states have (on average 2.8885032537960953) internal successors, (6658), 2380 states have internal predecessors, (6658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:31:50,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:31:50,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:50,267 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:31:50,268 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2022-11-19 07:31:50,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:50,268 INFO L85 PathProgramCache]: Analyzing trace with hash 450939649, now seen corresponding path program 1 times [2022-11-19 07:31:50,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:50,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205531826] [2022-11-19 07:31:50,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:50,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:50,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:50,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205531826] [2022-11-19 07:31:50,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205531826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:50,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:50,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:31:50,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173049314] [2022-11-19 07:31:50,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:50,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:31:50,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:50,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:31:50,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:50,322 INFO L87 Difference]: Start difference. First operand has 2381 states, 2305 states have (on average 2.8885032537960953) internal successors, (6658), 2380 states have internal predecessors, (6658), 0 states have call successors, (0), 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 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) [2022-11-19 07:31:50,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:50,446 INFO L93 Difference]: Finished difference Result 2254 states and 6120 transitions. [2022-11-19 07:31:50,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:31:50,447 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 [2022-11-19 07:31:50,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:50,475 INFO L225 Difference]: With dead ends: 2254 [2022-11-19 07:31:50,475 INFO L226 Difference]: Without dead ends: 2254 [2022-11-19 07:31:50,475 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 [2022-11-19 07:31:50,476 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 38 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:50,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 46 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:31:50,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2022-11-19 07:31:50,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 1849. [2022-11-19 07:31:50,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1820 states have (on average 2.813736263736264) internal successors, (5121), 1848 states have internal predecessors, (5121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:31:50,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 5121 transitions. [2022-11-19 07:31:50,618 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 5121 transitions. Word has length 5 [2022-11-19 07:31:50,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:50,618 INFO L495 AbstractCegarLoop]: Abstraction has 1849 states and 5121 transitions. [2022-11-19 07:31:50,618 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) [2022-11-19 07:31:50,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 5121 transitions. [2022-11-19 07:31:50,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:31:50,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:50,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:50,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:31:50,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2022-11-19 07:31:50,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:50,621 INFO L85 PathProgramCache]: Analyzing trace with hash -438611939, now seen corresponding path program 1 times [2022-11-19 07:31:50,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:50,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441966608] [2022-11-19 07:31:50,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:50,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:50,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:50,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:50,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441966608] [2022-11-19 07:31:50,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441966608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:50,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:50,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:31:50,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193284108] [2022-11-19 07:31:50,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:50,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:31:50,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:50,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:31:50,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:50,682 INFO L87 Difference]: Start difference. First operand 1849 states and 5121 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:31:50,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:50,773 INFO L93 Difference]: Finished difference Result 2095 states and 5743 transitions. [2022-11-19 07:31:50,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:31:50,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-11-19 07:31:50,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:50,816 INFO L225 Difference]: With dead ends: 2095 [2022-11-19 07:31:50,817 INFO L226 Difference]: Without dead ends: 2095 [2022-11-19 07:31:50,817 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 [2022-11-19 07:31:50,818 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 32 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:50,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 45 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:31:50,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2022-11-19 07:31:50,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1771. [2022-11-19 07:31:50,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1746 states have (on average 2.788659793814433) internal successors, (4869), 1770 states have internal predecessors, (4869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:31:50,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 4869 transitions. [2022-11-19 07:31:50,883 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 4869 transitions. Word has length 7 [2022-11-19 07:31:50,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:50,883 INFO L495 AbstractCegarLoop]: Abstraction has 1771 states and 4869 transitions. [2022-11-19 07:31:50,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:31:50,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 4869 transitions. [2022-11-19 07:31:50,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 07:31:50,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:50,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:50,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:31:50,885 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2022-11-19 07:31:50,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:50,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1397364541, now seen corresponding path program 1 times [2022-11-19 07:31:50,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:50,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753015789] [2022-11-19 07:31:50,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:50,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:50,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:50,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:50,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753015789] [2022-11-19 07:31:50,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753015789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:50,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:50,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:31:50,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134324828] [2022-11-19 07:31:50,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:50,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:31:50,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:50,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:31:50,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:50,921 INFO L87 Difference]: Start difference. First operand 1771 states and 4869 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:31:50,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:50,997 INFO L93 Difference]: Finished difference Result 1787 states and 4907 transitions. [2022-11-19 07:31:50,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:31:50,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-11-19 07:31:50,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:51,007 INFO L225 Difference]: With dead ends: 1787 [2022-11-19 07:31:51,007 INFO L226 Difference]: Without dead ends: 1787 [2022-11-19 07:31:51,008 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 [2022-11-19 07:31:51,008 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:51,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 45 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:31:51,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2022-11-19 07:31:51,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1787. [2022-11-19 07:31:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1787 states, 1764 states have (on average 2.7817460317460316) internal successors, (4907), 1786 states have internal predecessors, (4907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:31:51,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 4907 transitions. [2022-11-19 07:31:51,067 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 4907 transitions. Word has length 10 [2022-11-19 07:31:51,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:51,068 INFO L495 AbstractCegarLoop]: Abstraction has 1787 states and 4907 transitions. [2022-11-19 07:31:51,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:31:51,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 4907 transitions. [2022-11-19 07:31:51,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:31:51,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:51,070 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 07:31:51,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:31:51,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2022-11-19 07:31:51,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:51,071 INFO L85 PathProgramCache]: Analyzing trace with hash -315179547, now seen corresponding path program 1 times [2022-11-19 07:31:51,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:51,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040811065] [2022-11-19 07:31:51,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:51,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:31:51,105 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:31:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:31:51,119 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:31:51,123 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:31:51,123 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2022-11-19 07:31:51,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2022-11-19 07:31:51,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2022-11-19 07:31:51,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2022-11-19 07:31:51,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2022-11-19 07:31:51,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2022-11-19 07:31:51,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2022-11-19 07:31:51,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2022-11-19 07:31:51,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2022-11-19 07:31:51,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2022-11-19 07:31:51,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2022-11-19 07:31:51,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2022-11-19 07:31:51,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2022-11-19 07:31:51,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2022-11-19 07:31:51,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2022-11-19 07:31:51,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2022-11-19 07:31:51,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:31:51,128 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-19 07:31:51,128 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 07:31:51,128 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-19 07:31:51,149 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 07:31:51,152 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:31:51,152 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 134 transitions, 289 flow [2022-11-19 07:31:51,152 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 134 transitions, 289 flow [2022-11-19 07:31:51,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 134 transitions, 289 flow [2022-11-19 07:31:51,186 INFO L130 PetriNetUnfolder]: 10/171 cut-off events. [2022-11-19 07:31:51,187 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-19 07:31:51,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 171 events. 10/171 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 483 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 127. Up to 8 conditions per place. [2022-11-19 07:31:51,196 INFO L119 LiptonReduction]: Number of co-enabled transitions 9996 [2022-11-19 07:31:52,879 INFO L134 LiptonReduction]: Checked pairs total: 32892 [2022-11-19 07:31:52,883 INFO L136 LiptonReduction]: Total number of compositions: 78 [2022-11-19 07:31:52,884 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 66 transitions, 153 flow [2022-11-19 07:31:54,746 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 43054 states, 42583 states have (on average 3.836178756780875) internal successors, (163356), 43053 states have internal predecessors, (163356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:31:54,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:31:54,751 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;@3824a15e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:31:54,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-19 07:31:54,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 43054 states, 42583 states have (on average 3.836178756780875) internal successors, (163356), 43053 states have internal predecessors, (163356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:31:54,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:31:54,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:54,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:31:54,962 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-19 07:31:54,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:54,963 INFO L85 PathProgramCache]: Analyzing trace with hash 686514546, now seen corresponding path program 1 times [2022-11-19 07:31:54,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:54,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674319172] [2022-11-19 07:31:54,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:54,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:55,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:55,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674319172] [2022-11-19 07:31:55,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674319172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:55,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:55,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:31:55,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273733842] [2022-11-19 07:31:55,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:55,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:31:55,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:55,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:31:55,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:55,158 INFO L87 Difference]: Start difference. First operand has 43054 states, 42583 states have (on average 3.836178756780875) internal successors, (163356), 43053 states have internal predecessors, (163356), 0 states have call successors, (0), 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 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) [2022-11-19 07:31:56,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:56,334 INFO L93 Difference]: Finished difference Result 45651 states and 166725 transitions. [2022-11-19 07:31:56,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:31:56,334 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 [2022-11-19 07:31:56,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:57,186 INFO L225 Difference]: With dead ends: 45651 [2022-11-19 07:31:57,203 INFO L226 Difference]: Without dead ends: 45651 [2022-11-19 07:31:57,203 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 [2022-11-19 07:31:57,205 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 54 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:57,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 62 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:31:57,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45651 states. [2022-11-19 07:31:59,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45651 to 33639. [2022-11-19 07:31:59,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33639 states, 33460 states have (on average 3.7982068141063956) internal successors, (127088), 33638 states have internal predecessors, (127088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:31:59,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33639 states to 33639 states and 127088 transitions. [2022-11-19 07:31:59,603 INFO L78 Accepts]: Start accepts. Automaton has 33639 states and 127088 transitions. Word has length 5 [2022-11-19 07:31:59,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:59,605 INFO L495 AbstractCegarLoop]: Abstraction has 33639 states and 127088 transitions. [2022-11-19 07:31:59,605 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) [2022-11-19 07:31:59,606 INFO L276 IsEmpty]: Start isEmpty. Operand 33639 states and 127088 transitions. [2022-11-19 07:31:59,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:31:59,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:59,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:59,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:31:59,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-19 07:31:59,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:59,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1684462594, now seen corresponding path program 1 times [2022-11-19 07:31:59,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:59,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677129316] [2022-11-19 07:31:59,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:59,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:31:59,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:59,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677129316] [2022-11-19 07:31:59,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677129316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:59,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:59,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:31:59,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352682992] [2022-11-19 07:31:59,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:59,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:31:59,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:59,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:31:59,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:59,639 INFO L87 Difference]: Start difference. First operand 33639 states and 127088 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:32:00,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:32:00,491 INFO L93 Difference]: Finished difference Result 46584 states and 171792 transitions. [2022-11-19 07:32:00,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:32:00,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-11-19 07:32:00,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:32:00,879 INFO L225 Difference]: With dead ends: 46584 [2022-11-19 07:32:00,879 INFO L226 Difference]: Without dead ends: 46584 [2022-11-19 07:32:00,880 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 [2022-11-19 07:32:00,880 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 48 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:32:00,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 63 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:32:01,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46584 states. [2022-11-19 07:32:02,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46584 to 36603. [2022-11-19 07:32:02,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36603 states, 36432 states have (on average 3.743741765480896) internal successors, (136392), 36602 states have internal predecessors, (136392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:32:02,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36603 states to 36603 states and 136392 transitions. [2022-11-19 07:32:02,684 INFO L78 Accepts]: Start accepts. Automaton has 36603 states and 136392 transitions. Word has length 7 [2022-11-19 07:32:02,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:32:02,684 INFO L495 AbstractCegarLoop]: Abstraction has 36603 states and 136392 transitions. [2022-11-19 07:32:02,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:32:02,684 INFO L276 IsEmpty]: Start isEmpty. Operand 36603 states and 136392 transitions. [2022-11-19 07:32:02,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 07:32:02,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:32:02,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:32:02,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:32:02,686 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-19 07:32:02,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:32:02,686 INFO L85 PathProgramCache]: Analyzing trace with hash -185288808, now seen corresponding path program 1 times [2022-11-19 07:32:02,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:32:02,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226642247] [2022-11-19 07:32:02,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:02,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:32:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:32:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:32:02,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:32:02,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226642247] [2022-11-19 07:32:02,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226642247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:32:02,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:32:02,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:32:02,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927975698] [2022-11-19 07:32:02,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:32:02,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:32:02,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:32:02,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:32:02,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:32:02,718 INFO L87 Difference]: Start difference. First operand 36603 states and 136392 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:32:03,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:32:03,387 INFO L93 Difference]: Finished difference Result 39472 states and 146765 transitions. [2022-11-19 07:32:03,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:32:03,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-11-19 07:32:03,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:32:03,610 INFO L225 Difference]: With dead ends: 39472 [2022-11-19 07:32:03,611 INFO L226 Difference]: Without dead ends: 39472 [2022-11-19 07:32:03,611 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 [2022-11-19 07:32:03,613 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 39 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:32:03,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 67 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:32:03,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39472 states. [2022-11-19 07:32:04,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39472 to 37725. [2022-11-19 07:32:05,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37725 states, 37558 states have (on average 3.7369401991586346) internal successors, (140352), 37724 states have internal predecessors, (140352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:32:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37725 states to 37725 states and 140352 transitions. [2022-11-19 07:32:05,568 INFO L78 Accepts]: Start accepts. Automaton has 37725 states and 140352 transitions. Word has length 10 [2022-11-19 07:32:05,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:32:05,568 INFO L495 AbstractCegarLoop]: Abstraction has 37725 states and 140352 transitions. [2022-11-19 07:32:05,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:32:05,568 INFO L276 IsEmpty]: Start isEmpty. Operand 37725 states and 140352 transitions. [2022-11-19 07:32:05,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:32:05,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:32:05,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:32:05,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:32:05,573 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-19 07:32:05,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:32:05,575 INFO L85 PathProgramCache]: Analyzing trace with hash -905256848, now seen corresponding path program 1 times [2022-11-19 07:32:05,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:32:05,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949890669] [2022-11-19 07:32:05,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:05,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:32:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:32:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:32:05,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:32:05,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949890669] [2022-11-19 07:32:05,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949890669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:32:05,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:32:05,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:32:05,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108374862] [2022-11-19 07:32:05,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:32:05,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:32:05,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:32:05,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:32:05,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:32:05,656 INFO L87 Difference]: Start difference. First operand 37725 states and 140352 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:32:05,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:32:05,982 INFO L93 Difference]: Finished difference Result 39194 states and 145281 transitions. [2022-11-19 07:32:05,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:32:05,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-19 07:32:05,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:32:06,159 INFO L225 Difference]: With dead ends: 39194 [2022-11-19 07:32:06,159 INFO L226 Difference]: Without dead ends: 39194 [2022-11-19 07:32:06,159 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 [2022-11-19 07:32:06,160 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 40 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:32:06,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 80 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:32:06,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39194 states. [2022-11-19 07:32:07,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39194 to 39194. [2022-11-19 07:32:07,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39194 states, 39036 states have (on average 3.721718413771903) internal successors, (145281), 39193 states have internal predecessors, (145281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:32:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39194 states to 39194 states and 145281 transitions. [2022-11-19 07:32:07,503 INFO L78 Accepts]: Start accepts. Automaton has 39194 states and 145281 transitions. Word has length 13 [2022-11-19 07:32:07,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:32:07,503 INFO L495 AbstractCegarLoop]: Abstraction has 39194 states and 145281 transitions. [2022-11-19 07:32:07,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:32:07,503 INFO L276 IsEmpty]: Start isEmpty. Operand 39194 states and 145281 transitions. [2022-11-19 07:32:07,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:32:07,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:32:07,505 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:32:07,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:32:07,505 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-19 07:32:07,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:32:07,506 INFO L85 PathProgramCache]: Analyzing trace with hash 627155430, now seen corresponding path program 1 times [2022-11-19 07:32:07,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:32:07,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569439822] [2022-11-19 07:32:07,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:07,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:32:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:32:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:32:07,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:32:07,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569439822] [2022-11-19 07:32:07,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569439822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:32:07,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:32:07,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:32:07,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471394128] [2022-11-19 07:32:07,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:32:07,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:32:07,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:32:07,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:32:07,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:32:07,553 INFO L87 Difference]: Start difference. First operand 39194 states and 145281 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:32:08,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:32:08,371 INFO L93 Difference]: Finished difference Result 40112 states and 148456 transitions. [2022-11-19 07:32:08,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:32:08,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 14 [2022-11-19 07:32:08,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:32:08,538 INFO L225 Difference]: With dead ends: 40112 [2022-11-19 07:32:08,538 INFO L226 Difference]: Without dead ends: 40112 [2022-11-19 07:32:08,538 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 [2022-11-19 07:32:08,538 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 37 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:32:08,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 65 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:32:08,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40112 states. [2022-11-19 07:32:09,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40112 to 40112. [2022-11-19 07:32:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40112 states, 39963 states have (on average 3.714836223506744) internal successors, (148456), 40111 states have internal predecessors, (148456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:32:09,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40112 states to 40112 states and 148456 transitions. [2022-11-19 07:32:09,943 INFO L78 Accepts]: Start accepts. Automaton has 40112 states and 148456 transitions. Word has length 14 [2022-11-19 07:32:09,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:32:09,944 INFO L495 AbstractCegarLoop]: Abstraction has 40112 states and 148456 transitions. [2022-11-19 07:32:09,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:32:09,945 INFO L276 IsEmpty]: Start isEmpty. Operand 40112 states and 148456 transitions. [2022-11-19 07:32:09,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:32:09,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:32:09,947 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-19 07:32:09,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:32:09,947 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-19 07:32:09,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:32:09,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1294014533, now seen corresponding path program 1 times [2022-11-19 07:32:09,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:32:09,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646275236] [2022-11-19 07:32:09,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:32:09,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:32:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:32:09,978 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:32:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:32:09,990 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:32:09,990 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:32:09,990 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-19 07:32:09,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2022-11-19 07:32:09,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2022-11-19 07:32:09,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2022-11-19 07:32:09,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2022-11-19 07:32:09,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2022-11-19 07:32:09,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2022-11-19 07:32:09,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2022-11-19 07:32:09,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2022-11-19 07:32:09,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2022-11-19 07:32:09,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2022-11-19 07:32:09,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2022-11-19 07:32:09,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2022-11-19 07:32:09,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2022-11-19 07:32:09,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2022-11-19 07:32:09,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2022-11-19 07:32:09,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2022-11-19 07:32:09,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2022-11-19 07:32:09,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2022-11-19 07:32:09,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2022-11-19 07:32:09,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2022-11-19 07:32:09,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 07:32:09,997 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-19 07:32:09,997 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 07:32:09,997 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-19 07:32:10,039 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 07:32:10,048 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:32:10,048 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 169 transitions, 370 flow [2022-11-19 07:32:10,048 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 169 transitions, 370 flow [2022-11-19 07:32:10,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 169 transitions, 370 flow [2022-11-19 07:32:10,134 INFO L130 PetriNetUnfolder]: 13/219 cut-off events. [2022-11-19 07:32:10,134 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-19 07:32:10,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 219 events. 13/219 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 673 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 179. Up to 10 conditions per place. [2022-11-19 07:32:10,152 INFO L119 LiptonReduction]: Number of co-enabled transitions 18088 [2022-11-19 07:32:11,941 INFO L134 LiptonReduction]: Checked pairs total: 64260 [2022-11-19 07:32:11,941 INFO L136 LiptonReduction]: Total number of compositions: 93 [2022-11-19 07:32:11,942 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 94 places, 89 transitions, 210 flow