./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/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_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/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_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/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 7a0803bc25bdee4cec741e6286f7294c3704d91bb65e5684830693d517eafafb --- 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 06:48:56,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:48:56,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:48:56,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:48:56,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:48:56,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:48:56,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:48:56,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:48:56,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:48:56,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:48:56,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:48:56,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:48:56,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:48:56,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:48:56,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:48:56,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:48:56,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:48:56,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:48:56,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:48:56,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:48:56,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:48:56,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:48:56,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:48:56,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:48:56,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:48:56,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:48:56,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:48:56,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:48:56,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:48:56,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:48:56,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:48:56,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:48:56,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:48:56,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:48:56,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:48:56,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:48:56,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:48:56,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:48:56,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:48:56,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:48:56,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:48:56,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/bin/utaipan-I9t0OCRTmS/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-19 06:48:56,422 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:48:56,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:48:56,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:48:56,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:48:56,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:48:56,424 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:48:56,424 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:48:56,425 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:48:56,425 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:48:56,425 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:48:56,425 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:48:56,426 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:48:56,426 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:48:56,426 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:48:56,427 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:48:56,427 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:48:56,427 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:48:56,427 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:48:56,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:48:56,428 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:48:56,429 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:48:56,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:48:56,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:48:56,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:48:56,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:48:56,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:48:56,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:48:56,430 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-19 06:48:56,431 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:48:56,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:48:56,431 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:48:56,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:48:56,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:48:56,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:48:56,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:48:56,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:48:56,433 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:48:56,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:48:56,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:48:56,434 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:48:56,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:48:56,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:48:56,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:48:56,434 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_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a0803bc25bdee4cec741e6286f7294c3704d91bb65e5684830693d517eafafb [2022-11-19 06:48:56,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:48:56,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:48:56,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:48:56,768 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:48:56,769 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:48:56,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i [2022-11-19 06:48:56,836 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/bin/utaipan-I9t0OCRTmS/data/8de428ffa/cc86449b773b4c958635e58068d62ff4/FLAGc97fafd30 [2022-11-19 06:48:57,381 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:48:57,382 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i [2022-11-19 06:48:57,399 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/bin/utaipan-I9t0OCRTmS/data/8de428ffa/cc86449b773b4c958635e58068d62ff4/FLAGc97fafd30 [2022-11-19 06:48:57,630 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/bin/utaipan-I9t0OCRTmS/data/8de428ffa/cc86449b773b4c958635e58068d62ff4 [2022-11-19 06:48:57,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:48:57,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:48:57,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:48:57,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:48:57,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:48:57,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:48:57" (1/1) ... [2022-11-19 06:48:57,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f119078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:57, skipping insertion in model container [2022-11-19 06:48:57,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:48:57" (1/1) ... [2022-11-19 06:48:57,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:48:57,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:48:58,146 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_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i[30582,30595] [2022-11-19 06:48:58,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:48:58,163 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:48:58,234 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_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i[30582,30595] [2022-11-19 06:48:58,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:48:58,280 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:48:58,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:58 WrapperNode [2022-11-19 06:48:58,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:48:58,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:48:58,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:48:58,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:48:58,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:58" (1/1) ... [2022-11-19 06:48:58,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:58" (1/1) ... [2022-11-19 06:48:58,364 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 147 [2022-11-19 06:48:58,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:48:58,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:48:58,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:48:58,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:48:58,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:58" (1/1) ... [2022-11-19 06:48:58,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:58" (1/1) ... [2022-11-19 06:48:58,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:58" (1/1) ... [2022-11-19 06:48:58,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:58" (1/1) ... [2022-11-19 06:48:58,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:58" (1/1) ... [2022-11-19 06:48:58,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:58" (1/1) ... [2022-11-19 06:48:58,428 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:58" (1/1) ... [2022-11-19 06:48:58,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:58" (1/1) ... [2022-11-19 06:48:58,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:48:58,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:48:58,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:48:58,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:48:58,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:58" (1/1) ... [2022-11-19 06:48:58,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:48:58,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:58,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:48:58,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87aec6e-2c53-4e55-bda4-65e432c8fe6c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:48:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:48:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-19 06:48:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-19 06:48:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:48:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:48:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:48:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:48:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:48:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:48:58,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:48:58,532 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 06:48:58,664 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:48:58,666 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:48:59,125 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:48:59,342 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:48:59,342 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 06:48:59,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:48:59 BoogieIcfgContainer [2022-11-19 06:48:59,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:48:59,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:48:59,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:48:59,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:48:59,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:48:57" (1/3) ... [2022-11-19 06:48:59,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f97016b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:48:59, skipping insertion in model container [2022-11-19 06:48:59,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:58" (2/3) ... [2022-11-19 06:48:59,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f97016b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:48:59, skipping insertion in model container [2022-11-19 06:48:59,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:48:59" (3/3) ... [2022-11-19 06:48:59,358 INFO L112 eAbstractionObserver]: Analyzing ICFG 12_fmaxsymopt_cas.i [2022-11-19 06:48:59,370 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 06:48:59,380 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:48:59,380 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-19 06:48:59,380 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 06:48:59,516 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 06:48:59,560 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 06:48:59,578 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 129 transitions, 263 flow [2022-11-19 06:48:59,583 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 129 transitions, 263 flow [2022-11-19 06:48:59,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 129 transitions, 263 flow [2022-11-19 06:48:59,665 INFO L130 PetriNetUnfolder]: 12/140 cut-off events. [2022-11-19 06:48:59,665 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-19 06:48:59,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 140 events. 12/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 202 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 103. Up to 4 conditions per place. [2022-11-19 06:48:59,674 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2022-11-19 06:49:27,866 INFO L134 LiptonReduction]: Checked pairs total: 2596 [2022-11-19 06:49:27,867 INFO L136 LiptonReduction]: Total number of compositions: 142 [2022-11-19 06:49:27,875 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 26 transitions, 57 flow [2022-11-19 06:49:27,892 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 82 states, 65 states have (on average 2.523076923076923) internal successors, (164), 81 states have internal predecessors, (164), 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 06:49:27,910 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:49:27,916 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;@5a89b268, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:49:27,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-19 06:49:27,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 65 states have (on average 2.523076923076923) internal successors, (164), 81 states have internal predecessors, (164), 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 06:49:27,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:49:27,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:27,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:49:27,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-11-19 06:49:27,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:27,930 INFO L85 PathProgramCache]: Analyzing trace with hash 624376936, now seen corresponding path program 1 times [2022-11-19 06:49:27,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:27,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088137376] [2022-11-19 06:49:27,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:27,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:28,182 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 06:49:28,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:28,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088137376] [2022-11-19 06:49:28,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088137376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:28,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:28,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:49:28,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326465288] [2022-11-19 06:49:28,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:28,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:49:28,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:28,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:49:28,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:49:28,215 INFO L87 Difference]: Start difference. First operand has 82 states, 65 states have (on average 2.523076923076923) internal successors, (164), 81 states have internal predecessors, (164), 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 5.0) internal successors, (5), 2 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 06:49:28,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:28,341 INFO L93 Difference]: Finished difference Result 39 states and 74 transitions. [2022-11-19 06:49:28,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:49:28,344 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 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 06:49:28,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:28,353 INFO L225 Difference]: With dead ends: 39 [2022-11-19 06:49:28,353 INFO L226 Difference]: Without dead ends: 39 [2022-11-19 06:49:28,354 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 06:49:28,359 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:28,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:49:28,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-19 06:49:28,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-19 06:49:28,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 2.0) internal successors, (74), 38 states have internal predecessors, (74), 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 06:49:28,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 74 transitions. [2022-11-19 06:49:28,401 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 74 transitions. Word has length 5 [2022-11-19 06:49:28,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:28,402 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 74 transitions. [2022-11-19 06:49:28,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 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 06:49:28,407 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 74 transitions. [2022-11-19 06:49:28,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:49:28,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:28,409 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-19 06:49:28,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:49:28,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-11-19 06:49:28,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:28,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2119270074, now seen corresponding path program 1 times [2022-11-19 06:49:28,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:28,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144746683] [2022-11-19 06:49:28,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:28,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:49:28,462 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:49:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:49:28,508 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 06:49:28,508 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:49:28,510 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-19 06:49:28,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-19 06:49:28,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-19 06:49:28,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-19 06:49:28,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-19 06:49:28,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-19 06:49:28,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-19 06:49:28,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-19 06:49:28,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-19 06:49:28,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-19 06:49:28,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-19 06:49:28,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-19 06:49:28,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-19 06:49:28,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-19 06:49:28,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-19 06:49:28,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-19 06:49:28,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-19 06:49:28,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:49:28,519 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 06:49:28,521 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 06:49:28,522 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-19 06:49:28,581 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 06:49:28,585 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 06:49:28,585 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 220 transitions, 452 flow [2022-11-19 06:49:28,586 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 220 transitions, 452 flow [2022-11-19 06:49:28,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 220 transitions, 452 flow [2022-11-19 06:49:28,669 INFO L130 PetriNetUnfolder]: 23/244 cut-off events. [2022-11-19 06:49:28,676 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-19 06:49:28,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 244 events. 23/244 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 661 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 193. Up to 6 conditions per place. [2022-11-19 06:49:28,697 INFO L119 LiptonReduction]: Number of co-enabled transitions 21420 [2022-11-19 06:49:51,064 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 112 DAG size of output: 99 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 06:51:04,342 WARN L233 SmtUtils]: Spent 7.24s on a formula simplification. DAG size of input: 112 DAG size of output: 99 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 06:57:00,900 INFO L134 LiptonReduction]: Checked pairs total: 95407 [2022-11-19 06:57:00,900 INFO L136 LiptonReduction]: Total number of compositions: 250 [2022-11-19 06:57:00,902 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 90 transitions, 192 flow [2022-11-19 06:57:01,247 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7953 states, 7784 states have (on average 3.1544193216855088) internal successors, (24554), 7952 states have internal predecessors, (24554), 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 06:57:01,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:57:01,251 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;@5a89b268, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:57:01,251 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-19 06:57:01,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 7953 states, 7784 states have (on average 3.1544193216855088) internal successors, (24554), 7952 states have internal predecessors, (24554), 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 06:57:01,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:57:01,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:01,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:57:01,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-19 06:57:01,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:01,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1081986314, now seen corresponding path program 1 times [2022-11-19 06:57:01,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:57:01,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720616701] [2022-11-19 06:57:01,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:01,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:57:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:01,355 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 06:57:01,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:57:01,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720616701] [2022-11-19 06:57:01,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720616701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:57:01,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:57:01,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:57:01,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105530528] [2022-11-19 06:57:01,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:01,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:57:01,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:57:01,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:57:01,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:57:01,394 INFO L87 Difference]: Start difference. First operand has 7953 states, 7784 states have (on average 3.1544193216855088) internal successors, (24554), 7952 states have internal predecessors, (24554), 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 6.0) internal successors, (6), 2 states have internal predecessors, (6), 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 06:57:01,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:01,714 INFO L93 Difference]: Finished difference Result 5251 states and 15243 transitions. [2022-11-19 06:57:01,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:57:01,715 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 6.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-11-19 06:57:01,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:01,753 INFO L225 Difference]: With dead ends: 5251 [2022-11-19 06:57:01,753 INFO L226 Difference]: Without dead ends: 5251 [2022-11-19 06:57:01,754 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 06:57:01,765 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:01,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:57:01,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5251 states. [2022-11-19 06:57:02,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5251 to 5251. [2022-11-19 06:57:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5226 states have (on average 2.9167623421354762) internal successors, (15243), 5250 states have internal predecessors, (15243), 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 06:57:02,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 15243 transitions. [2022-11-19 06:57:02,108 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 15243 transitions. Word has length 6 [2022-11-19 06:57:02,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:02,108 INFO L495 AbstractCegarLoop]: Abstraction has 5251 states and 15243 transitions. [2022-11-19 06:57:02,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 6.0) internal successors, (6), 2 states have internal predecessors, (6), 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 06:57:02,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 15243 transitions. [2022-11-19 06:57:02,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 06:57:02,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:02,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:57:02,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:57:02,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-19 06:57:02,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:02,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1342201848, now seen corresponding path program 1 times [2022-11-19 06:57:02,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:57:02,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851926332] [2022-11-19 06:57:02,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:02,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:57:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:02,768 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 06:57:02,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:57:02,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851926332] [2022-11-19 06:57:02,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851926332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:57:02,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:57:02,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:57:02,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203085225] [2022-11-19 06:57:02,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:02,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:57:02,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:57:02,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:57:02,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:57:02,770 INFO L87 Difference]: Start difference. First operand 5251 states and 15243 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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 06:57:06,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:06,120 INFO L93 Difference]: Finished difference Result 5687 states and 16482 transitions. [2022-11-19 06:57:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:57:06,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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 06:57:06,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:06,157 INFO L225 Difference]: With dead ends: 5687 [2022-11-19 06:57:06,157 INFO L226 Difference]: Without dead ends: 5687 [2022-11-19 06:57:06,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:57:06,159 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 88 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:06,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 97 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-19 06:57:06,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5687 states. [2022-11-19 06:57:06,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5687 to 5687. [2022-11-19 06:57:06,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5687 states, 5663 states have (on average 2.910471481546883) internal successors, (16482), 5686 states have internal predecessors, (16482), 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 06:57:06,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5687 states to 5687 states and 16482 transitions. [2022-11-19 06:57:06,523 INFO L78 Accepts]: Start accepts. Automaton has 5687 states and 16482 transitions. Word has length 10 [2022-11-19 06:57:06,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:06,523 INFO L495 AbstractCegarLoop]: Abstraction has 5687 states and 16482 transitions. [2022-11-19 06:57:06,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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 06:57:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5687 states and 16482 transitions. [2022-11-19 06:57:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 06:57:06,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:06,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:57:06,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:57:06,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-19 06:57:06,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:06,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2072353160, now seen corresponding path program 1 times [2022-11-19 06:57:06,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:57:06,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377342379] [2022-11-19 06:57:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:06,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:57:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:06,637 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 06:57:06,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:57:06,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377342379] [2022-11-19 06:57:06,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377342379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:57:06,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:57:06,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:57:06,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130525990] [2022-11-19 06:57:06,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:06,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:57:06,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:57:06,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:57:06,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:57:06,639 INFO L87 Difference]: Start difference. First operand 5687 states and 16482 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 06:57:07,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:07,163 INFO L93 Difference]: Finished difference Result 7271 states and 20983 transitions. [2022-11-19 06:57:07,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:57:07,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-11-19 06:57:07,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:07,209 INFO L225 Difference]: With dead ends: 7271 [2022-11-19 06:57:07,209 INFO L226 Difference]: Without dead ends: 7271 [2022-11-19 06:57:07,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 06:57:07,210 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 45 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:07,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 104 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 06:57:07,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7271 states. [2022-11-19 06:57:07,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7271 to 5851. [2022-11-19 06:57:07,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5851 states, 5827 states have (on average 2.9085292603397974) internal successors, (16948), 5850 states have internal predecessors, (16948), 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 06:57:07,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5851 states to 5851 states and 16948 transitions. [2022-11-19 06:57:07,559 INFO L78 Accepts]: Start accepts. Automaton has 5851 states and 16948 transitions. Word has length 11 [2022-11-19 06:57:07,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:07,560 INFO L495 AbstractCegarLoop]: Abstraction has 5851 states and 16948 transitions. [2022-11-19 06:57:07,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 06:57:07,560 INFO L276 IsEmpty]: Start isEmpty. Operand 5851 states and 16948 transitions. [2022-11-19 06:57:07,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 06:57:07,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:07,561 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 06:57:07,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:57:07,562 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-19 06:57:07,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:57:07,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1152357898, now seen corresponding path program 1 times [2022-11-19 06:57:07,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:57:07,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422907291] [2022-11-19 06:57:07,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:57:07,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:57:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:57:07,609 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:57:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:57:07,672 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 06:57:07,672 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:57:07,672 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-19 06:57:07,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-11-19 06:57:07,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-11-19 06:57:07,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-11-19 06:57:07,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-11-19 06:57:07,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-11-19 06:57:07,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-11-19 06:57:07,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-11-19 06:57:07,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-11-19 06:57:07,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-11-19 06:57:07,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-11-19 06:57:07,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-11-19 06:57:07,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-11-19 06:57:07,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-11-19 06:57:07,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-11-19 06:57:07,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-11-19 06:57:07,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-11-19 06:57:07,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-11-19 06:57:07,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-11-19 06:57:07,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-11-19 06:57:07,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-11-19 06:57:07,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-11-19 06:57:07,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-11-19 06:57:07,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-11-19 06:57:07,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-11-19 06:57:07,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:57:07,687 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-19 06:57:07,687 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 06:57:07,687 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-19 06:57:07,796 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 06:57:07,855 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 06:57:07,855 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 311 transitions, 643 flow [2022-11-19 06:57:07,856 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 311 transitions, 643 flow [2022-11-19 06:57:07,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 311 transitions, 643 flow [2022-11-19 06:57:08,014 INFO L130 PetriNetUnfolder]: 34/348 cut-off events. [2022-11-19 06:57:08,014 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-19 06:57:08,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 348 events. 34/348 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1188 event pairs, 0 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 283. Up to 8 conditions per place. [2022-11-19 06:57:08,064 INFO L119 LiptonReduction]: Number of co-enabled transitions 56700 [2022-11-19 07:01:31,098 WARN L233 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 108 DAG size of output: 95 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 07:01:40,895 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 112 DAG size of output: 99 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 07:02:14,043 WARN L233 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 112 DAG size of output: 99 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)