./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a 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_d191ba85-14ff-4359-a4cd-5b7500790976/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d191ba85-14ff-4359-a4cd-5b7500790976/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d191ba85-14ff-4359-a4cd-5b7500790976/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d191ba85-14ff-4359-a4cd-5b7500790976/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d191ba85-14ff-4359-a4cd-5b7500790976/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d191ba85-14ff-4359-a4cd-5b7500790976/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a11d0cba01cb66911cac56797cb36d325dc008752ffb55c25c965bd0644c21c3 --- 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-38b53e6 [2022-11-25 18:05:46,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:05:46,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:05:46,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:05:46,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:05:46,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:05:46,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:05:46,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:05:46,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:05:46,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:05:46,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:05:46,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:05:46,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:05:46,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:05:46,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:05:46,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:05:46,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:05:46,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:05:46,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:05:46,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:05:46,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:05:46,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:05:46,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:05:46,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:05:46,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:05:46,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:05:46,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:05:46,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:05:46,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:05:46,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:05:46,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:05:46,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:05:46,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:05:46,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:05:46,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:05:46,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:05:46,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:05:46,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:05:46,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:05:46,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:05:46,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:05:46,358 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d191ba85-14ff-4359-a4cd-5b7500790976/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 18:05:46,397 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:05:46,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:05:46,398 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:05:46,398 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:05:46,399 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:05:46,400 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:05:46,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:05:46,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:05:46,401 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:05:46,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:05:46,402 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:05:46,403 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:05:46,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:05:46,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:05:46,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:05:46,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:05:46,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:05:46,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:05:46,404 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 18:05:46,404 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:05:46,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:05:46,405 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:05:46,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:05:46,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:05:46,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:05:46,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:05:46,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:05:46,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:05:46,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:05:46,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:05:46,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:05:46,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:05:46,408 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:05:46,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:05:46,408 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:05:46,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:05:46,409 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d191ba85-14ff-4359-a4cd-5b7500790976/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d191ba85-14ff-4359-a4cd-5b7500790976/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a11d0cba01cb66911cac56797cb36d325dc008752ffb55c25c965bd0644c21c3 [2022-11-25 18:05:46,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:05:46,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:05:46,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:05:46,801 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:05:46,802 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:05:46,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d191ba85-14ff-4359-a4cd-5b7500790976/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i [2022-11-25 18:05:50,052 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:05:50,396 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:05:50,397 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d191ba85-14ff-4359-a4cd-5b7500790976/sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i [2022-11-25 18:05:50,412 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d191ba85-14ff-4359-a4cd-5b7500790976/bin/uautomizer-ZsLfNo2U6R/data/a1212786b/f18e2a92c4794889ab5f8fe4a546dc3d/FLAG657d5e462 [2022-11-25 18:05:50,431 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d191ba85-14ff-4359-a4cd-5b7500790976/bin/uautomizer-ZsLfNo2U6R/data/a1212786b/f18e2a92c4794889ab5f8fe4a546dc3d [2022-11-25 18:05:50,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:05:50,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:05:50,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:05:50,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:05:50,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:05:50,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:05:50" (1/1) ... [2022-11-25 18:05:50,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11aec78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:50, skipping insertion in model container [2022-11-25 18:05:50,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:05:50" (1/1) ... [2022-11-25 18:05:50,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:05:50,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:05:50,993 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d191ba85-14ff-4359-a4cd-5b7500790976/sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i[30467,30480] [2022-11-25 18:05:51,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:05:51,014 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:05:51,073 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d191ba85-14ff-4359-a4cd-5b7500790976/sv-benchmarks/c/pthread-ext/10_fmaxsym_cas.i[30467,30480] [2022-11-25 18:05:51,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:05:51,109 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:05:51,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:51 WrapperNode [2022-11-25 18:05:51,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:05:51,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:05:51,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:05:51,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:05:51,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:51" (1/1) ... [2022-11-25 18:05:51,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:51" (1/1) ... [2022-11-25 18:05:51,161 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 142 [2022-11-25 18:05:51,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:05:51,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:05:51,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:05:51,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:05:51,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:51" (1/1) ... [2022-11-25 18:05:51,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:51" (1/1) ... [2022-11-25 18:05:51,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:51" (1/1) ... [2022-11-25 18:05:51,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:51" (1/1) ... [2022-11-25 18:05:51,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:51" (1/1) ... [2022-11-25 18:05:51,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:51" (1/1) ... [2022-11-25 18:05:51,195 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:51" (1/1) ... [2022-11-25 18:05:51,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:51" (1/1) ... [2022-11-25 18:05:51,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:05:51,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:05:51,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:05:51,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:05:51,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:51" (1/1) ... [2022-11-25 18:05:51,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:05:51,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d191ba85-14ff-4359-a4cd-5b7500790976/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:51,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d191ba85-14ff-4359-a4cd-5b7500790976/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:05:51,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d191ba85-14ff-4359-a4cd-5b7500790976/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:05:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:05:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-25 18:05:51,290 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-25 18:05:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:05:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:05:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:05:51,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:05:51,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:05:51,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:05:51,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:05:51,293 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:05:51,438 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:05:51,459 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:05:51,849 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:05:52,088 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:05:52,091 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 18:05:52,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:05:52 BoogieIcfgContainer [2022-11-25 18:05:52,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:05:52,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:05:52,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:05:52,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:05:52,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:05:50" (1/3) ... [2022-11-25 18:05:52,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b0e0fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:05:52, skipping insertion in model container [2022-11-25 18:05:52,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:51" (2/3) ... [2022-11-25 18:05:52,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b0e0fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:05:52, skipping insertion in model container [2022-11-25 18:05:52,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:05:52" (3/3) ... [2022-11-25 18:05:52,105 INFO L112 eAbstractionObserver]: Analyzing ICFG 10_fmaxsym_cas.i [2022-11-25 18:05:52,131 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:05:52,141 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:05:52,141 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-25 18:05:52,142 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:05:52,260 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:05:52,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 251 flow [2022-11-25 18:05:52,374 INFO L130 PetriNetUnfolder]: 10/134 cut-off events. [2022-11-25 18:05:52,374 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:05:52,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 134 events. 10/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 137 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2022-11-25 18:05:52,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 123 transitions, 251 flow [2022-11-25 18:05:52,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 123 transitions, 251 flow [2022-11-25 18:05:52,390 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:05:52,408 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 123 transitions, 251 flow [2022-11-25 18:05:52,419 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 123 transitions, 251 flow [2022-11-25 18:05:52,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 251 flow [2022-11-25 18:05:52,494 INFO L130 PetriNetUnfolder]: 10/134 cut-off events. [2022-11-25 18:05:52,494 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:05:52,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 134 events. 10/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 137 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2022-11-25 18:05:52,500 INFO L119 LiptonReduction]: Number of co-enabled transitions 2352 [2022-11-25 18:06:23,026 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 18:06:28,115 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 116 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 18:06:33,777 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 113 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 18:06:42,619 INFO L134 LiptonReduction]: Checked pairs total: 2510 [2022-11-25 18:06:42,620 INFO L136 LiptonReduction]: Total number of compositions: 136 [2022-11-25 18:06:42,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:06:42,639 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6ebfb0b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:06:42,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-25 18:06:42,644 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2022-11-25 18:06:42,644 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:06:42,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:06:42,645 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:06:42,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-11-25 18:06:42,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:42,651 INFO L85 PathProgramCache]: Analyzing trace with hash 602427992, now seen corresponding path program 1 times [2022-11-25 18:06:42,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:42,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120207834] [2022-11-25 18:06:42,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:42,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:42,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:06:42,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:42,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120207834] [2022-11-25 18:06:42,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120207834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:42,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:42,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:06:42,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541658712] [2022-11-25 18:06:42,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:42,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:06:42,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:42,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:06:42,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:06:42,950 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 259 [2022-11-25 18:06:42,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 25 transitions, 55 flow. Second operand has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 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) [2022-11-25 18:06:42,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:06:42,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 259 [2022-11-25 18:06:42,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:06:43,143 INFO L130 PetriNetUnfolder]: 25/55 cut-off events. [2022-11-25 18:06:43,143 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:06:43,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 55 events. 25/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 16 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 102. Up to 55 conditions per place. [2022-11-25 18:06:43,145 INFO L137 encePairwiseOnDemand]: 250/259 looper letters, 15 selfloop transitions, 0 changer transitions 0/16 dead transitions. [2022-11-25 18:06:43,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 16 transitions, 67 flow [2022-11-25 18:06:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:06:43,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 18:06:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 242 transitions. [2022-11-25 18:06:43,159 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4671814671814672 [2022-11-25 18:06:43,160 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 242 transitions. [2022-11-25 18:06:43,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 242 transitions. [2022-11-25 18:06:43,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:06:43,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 242 transitions. [2022-11-25 18:06:43,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 121.0) internal successors, (242), 2 states have internal predecessors, (242), 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) [2022-11-25 18:06:43,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 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) [2022-11-25 18:06:43,173 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 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) [2022-11-25 18:06:43,175 INFO L175 Difference]: Start difference. First operand has 24 places, 25 transitions, 55 flow. Second operand 2 states and 242 transitions. [2022-11-25 18:06:43,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 16 transitions, 67 flow [2022-11-25 18:06:43,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 16 transitions, 67 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:06:43,180 INFO L231 Difference]: Finished difference. Result has 17 places, 16 transitions, 37 flow [2022-11-25 18:06:43,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=37, PETRI_PLACES=17, PETRI_TRANSITIONS=16} [2022-11-25 18:06:43,186 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -7 predicate places. [2022-11-25 18:06:43,186 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 16 transitions, 37 flow [2022-11-25 18:06:43,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 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) [2022-11-25 18:06:43,187 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:06:43,187 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 18:06:43,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:06:43,188 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)] === [2022-11-25 18:06:43,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:43,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1495270046, now seen corresponding path program 1 times [2022-11-25 18:06:43,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:43,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960429608] [2022-11-25 18:06:43,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:43,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:06:43,216 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:06:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:06:43,246 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:06:43,246 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:06:43,248 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-25 18:06:43,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-25 18:06:43,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-25 18:06:43,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-25 18:06:43,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-25 18:06:43,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-25 18:06:43,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-25 18:06:43,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-25 18:06:43,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-25 18:06:43,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-25 18:06:43,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-25 18:06:43,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-25 18:06:43,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-25 18:06:43,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-25 18:06:43,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-25 18:06:43,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-25 18:06:43,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-25 18:06:43,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:06:43,255 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 18:06:43,258 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 18:06:43,258 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 18:06:43,320 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:06:43,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 208 transitions, 428 flow [2022-11-25 18:06:43,375 INFO L130 PetriNetUnfolder]: 19/232 cut-off events. [2022-11-25 18:06:43,375 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:06:43,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 232 events. 19/232 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 496 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 181. Up to 6 conditions per place. [2022-11-25 18:06:43,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 208 transitions, 428 flow [2022-11-25 18:06:43,382 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 208 transitions, 428 flow [2022-11-25 18:06:43,383 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:06:43,383 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 208 transitions, 428 flow [2022-11-25 18:06:43,383 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 208 transitions, 428 flow [2022-11-25 18:06:43,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 208 transitions, 428 flow [2022-11-25 18:06:43,427 INFO L130 PetriNetUnfolder]: 19/232 cut-off events. [2022-11-25 18:06:43,428 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:06:43,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 232 events. 19/232 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 496 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 181. Up to 6 conditions per place. [2022-11-25 18:06:43,440 INFO L119 LiptonReduction]: Number of co-enabled transitions 18984 [2022-11-25 18:07:56,101 WARN L233 SmtUtils]: Spent 6.31s 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) [2022-11-25 18:11:03,021 INFO L134 LiptonReduction]: Checked pairs total: 75358 [2022-11-25 18:11:03,021 INFO L136 LiptonReduction]: Total number of compositions: 210 [2022-11-25 18:11:03,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:11:03,025 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6ebfb0b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:11:03,026 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-25 18:11:03,038 INFO L130 PetriNetUnfolder]: 0/24 cut-off events. [2022-11-25 18:11:03,038 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:11:03,038 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:03,039 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:03,039 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-25 18:11:03,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:03,040 INFO L85 PathProgramCache]: Analyzing trace with hash 211936912, now seen corresponding path program 1 times [2022-11-25 18:11:03,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:03,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082489415] [2022-11-25 18:11:03,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:03,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:03,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:03,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082489415] [2022-11-25 18:11:03,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082489415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:03,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:03,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:11:03,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169147627] [2022-11-25 18:11:03,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:03,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:11:03,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:03,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:11:03,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:11:05,803 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 418 [2022-11-25 18:11:05,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 85 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 172.66666666666666) internal successors, (1036), 6 states have internal predecessors, (1036), 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) [2022-11-25 18:11:05,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:05,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 418 [2022-11-25 18:11:05,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:07,695 INFO L130 PetriNetUnfolder]: 942/2459 cut-off events. [2022-11-25 18:11:07,696 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-11-25 18:11:07,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4013 conditions, 2459 events. 942/2459 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 18465 event pairs, 342 based on Foata normal form. 0/2169 useless extension candidates. Maximal degree in co-relation 2314. Up to 953 conditions per place. [2022-11-25 18:11:07,711 INFO L137 encePairwiseOnDemand]: 398/418 looper letters, 89 selfloop transitions, 11 changer transitions 0/140 dead transitions. [2022-11-25 18:11:07,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 140 transitions, 512 flow [2022-11-25 18:11:07,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:11:07,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:11:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1167 transitions. [2022-11-25 18:11:07,720 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.465311004784689 [2022-11-25 18:11:07,720 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1167 transitions. [2022-11-25 18:11:07,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1167 transitions. [2022-11-25 18:11:07,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:07,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1167 transitions. [2022-11-25 18:11:07,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 194.5) internal successors, (1167), 6 states have internal predecessors, (1167), 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) [2022-11-25 18:11:07,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 418.0) internal successors, (2926), 7 states have internal predecessors, (2926), 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) [2022-11-25 18:11:07,736 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 418.0) internal successors, (2926), 7 states have internal predecessors, (2926), 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) [2022-11-25 18:11:07,737 INFO L175 Difference]: Start difference. First operand has 82 places, 85 transitions, 182 flow. Second operand 6 states and 1167 transitions. [2022-11-25 18:11:07,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 140 transitions, 512 flow [2022-11-25 18:11:07,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 140 transitions, 510 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-25 18:11:07,743 INFO L231 Difference]: Finished difference. Result has 83 places, 84 transitions, 238 flow [2022-11-25 18:11:07,743 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=238, PETRI_PLACES=83, PETRI_TRANSITIONS=84} [2022-11-25 18:11:07,744 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 1 predicate places. [2022-11-25 18:11:07,744 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 84 transitions, 238 flow [2022-11-25 18:11:07,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 172.66666666666666) internal successors, (1036), 6 states have internal predecessors, (1036), 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) [2022-11-25 18:11:07,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:07,746 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 18:11:07,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:11:07,747 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-25 18:11:07,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:07,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1648927952, now seen corresponding path program 1 times [2022-11-25 18:11:07,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:07,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381009140] [2022-11-25 18:11:07,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:07,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:11:07,788 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:11:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:11:07,812 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:11:07,820 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:11:07,820 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-25 18:11:07,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-11-25 18:11:07,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-11-25 18:11:07,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-11-25 18:11:07,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-11-25 18:11:07,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-11-25 18:11:07,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-11-25 18:11:07,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-11-25 18:11:07,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-11-25 18:11:07,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-11-25 18:11:07,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-11-25 18:11:07,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-11-25 18:11:07,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-11-25 18:11:07,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-11-25 18:11:07,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-11-25 18:11:07,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-11-25 18:11:07,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-11-25 18:11:07,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-11-25 18:11:07,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-11-25 18:11:07,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-11-25 18:11:07,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-11-25 18:11:07,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-11-25 18:11:07,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-11-25 18:11:07,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-11-25 18:11:07,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-11-25 18:11:07,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:11:07,839 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 18:11:07,840 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 18:11:07,840 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 18:11:07,906 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:11:07,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 293 transitions, 607 flow [2022-11-25 18:11:07,983 INFO L130 PetriNetUnfolder]: 28/330 cut-off events. [2022-11-25 18:11:07,983 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 18:11:07,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 330 events. 28/330 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 982 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 265. Up to 8 conditions per place. [2022-11-25 18:11:07,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 293 transitions, 607 flow [2022-11-25 18:11:07,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 293 transitions, 607 flow [2022-11-25 18:11:07,995 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:11:07,995 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 293 transitions, 607 flow [2022-11-25 18:11:07,996 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 293 transitions, 607 flow [2022-11-25 18:11:07,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 293 transitions, 607 flow [2022-11-25 18:11:08,062 INFO L130 PetriNetUnfolder]: 28/330 cut-off events. [2022-11-25 18:11:08,062 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 18:11:08,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 330 events. 28/330 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 982 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 265. Up to 8 conditions per place. [2022-11-25 18:11:08,090 INFO L119 LiptonReduction]: Number of co-enabled transitions 49896 [2022-11-25 18:11:26,433 WARN L233 SmtUtils]: Spent 5.91s 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) [2022-11-25 18:11:35,424 WARN L233 SmtUtils]: Spent 5.99s 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) [2022-11-25 18:11:55,426 WARN L233 SmtUtils]: Spent 5.43s 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) [2022-11-25 18:12:04,009 WARN L233 SmtUtils]: Spent 5.62s 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) [2022-11-25 18:14:07,019 WARN L233 SmtUtils]: Spent 5.32s 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) [2022-11-25 18:14:16,230 WARN L233 SmtUtils]: Spent 6.40s 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) [2022-11-25 18:17:54,288 INFO L134 LiptonReduction]: Checked pairs total: 208200 [2022-11-25 18:17:54,289 INFO L136 LiptonReduction]: Total number of compositions: 311 [2022-11-25 18:17:54,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:17:54,292 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6ebfb0b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:17:54,292 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-11-25 18:17:54,296 INFO L130 PetriNetUnfolder]: 0/24 cut-off events. [2022-11-25 18:17:54,296 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 18:17:54,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:17:54,296 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:17:54,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-25 18:17:54,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:17:54,297 INFO L85 PathProgramCache]: Analyzing trace with hash 757517436, now seen corresponding path program 1 times [2022-11-25 18:17:54,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:17:54,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528871454] [2022-11-25 18:17:54,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:17:54,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:17:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:17:54,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:17:54,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:17:54,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528871454] [2022-11-25 18:17:54,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528871454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:17:54,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:17:54,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:17:54,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312761785] [2022-11-25 18:17:54,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:17:54,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:17:54,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:17:54,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:17:54,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:17:57,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 604 [2022-11-25 18:17:57,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 126 transitions, 273 flow. Second operand has 6 states, 6 states have (on average 245.66666666666666) internal successors, (1474), 6 states have internal predecessors, (1474), 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) [2022-11-25 18:17:57,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:17:57,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 604 [2022-11-25 18:17:57,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:18:04,820 INFO L130 PetriNetUnfolder]: 15010/31467 cut-off events. [2022-11-25 18:18:04,820 INFO L131 PetriNetUnfolder]: For 1486/1486 co-relation queries the response was YES. [2022-11-25 18:18:04,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52621 conditions, 31467 events. 15010/31467 cut-off events. For 1486/1486 co-relation queries the response was YES. Maximal size of possible extension queue 1138. Compared 317648 event pairs, 5920 based on Foata normal form. 1346/28242 useless extension candidates. Maximal degree in co-relation 21852. Up to 13425 conditions per place. [2022-11-25 18:18:05,098 INFO L137 encePairwiseOnDemand]: 575/604 looper letters, 148 selfloop transitions, 15 changer transitions 0/224 dead transitions. [2022-11-25 18:18:05,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 224 transitions, 843 flow [2022-11-25 18:18:05,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:18:05,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:18:05,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1705 transitions. [2022-11-25 18:18:05,104 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4704746136865342 [2022-11-25 18:18:05,104 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1705 transitions. [2022-11-25 18:18:05,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1705 transitions. [2022-11-25 18:18:05,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:18:05,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1705 transitions. [2022-11-25 18:18:05,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.1666666666667) internal successors, (1705), 6 states have internal predecessors, (1705), 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) [2022-11-25 18:18:05,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 604.0) internal successors, (4228), 7 states have internal predecessors, (4228), 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) [2022-11-25 18:18:05,119 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 604.0) internal successors, (4228), 7 states have internal predecessors, (4228), 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) [2022-11-25 18:18:05,119 INFO L175 Difference]: Start difference. First operand has 118 places, 126 transitions, 273 flow. Second operand 6 states and 1705 transitions. [2022-11-25 18:18:05,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 224 transitions, 843 flow [2022-11-25 18:18:05,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 224 transitions, 829 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-11-25 18:18:05,125 INFO L231 Difference]: Finished difference. Result has 115 places, 121 transitions, 335 flow [2022-11-25 18:18:05,126 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=604, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=335, PETRI_PLACES=115, PETRI_TRANSITIONS=121} [2022-11-25 18:18:05,127 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, -3 predicate places. [2022-11-25 18:18:05,127 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 121 transitions, 335 flow [2022-11-25 18:18:05,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 245.66666666666666) internal successors, (1474), 6 states have internal predecessors, (1474), 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) [2022-11-25 18:18:05,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:18:05,128 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:18:05,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:18:05,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-25 18:18:05,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:18:05,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1278194981, now seen corresponding path program 1 times [2022-11-25 18:18:05,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:18:05,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539367860] [2022-11-25 18:18:05,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:18:05,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:18:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:18:05,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:18:05,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539367860] [2022-11-25 18:18:05,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539367860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:18:05,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:18:05,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:18:05,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707644880] [2022-11-25 18:18:05,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:18:05,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:18:05,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:18:05,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:18:05,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:18:08,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 604 [2022-11-25 18:18:08,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 121 transitions, 335 flow. Second operand has 6 states, 6 states have (on average 245.83333333333334) internal successors, (1475), 6 states have internal predecessors, (1475), 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) [2022-11-25 18:18:08,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:18:08,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 604 [2022-11-25 18:18:08,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:18:17,856 INFO L130 PetriNetUnfolder]: 25496/53371 cut-off events. [2022-11-25 18:18:17,856 INFO L131 PetriNetUnfolder]: For 8449/9304 co-relation queries the response was YES. [2022-11-25 18:18:18,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96973 conditions, 53371 events. 25496/53371 cut-off events. For 8449/9304 co-relation queries the response was YES. Maximal size of possible extension queue 2150. Compared 587684 event pairs, 9318 based on Foata normal form. 408/48980 useless extension candidates. Maximal degree in co-relation 59862. Up to 23173 conditions per place. [2022-11-25 18:18:18,313 INFO L137 encePairwiseOnDemand]: 594/604 looper letters, 163 selfloop transitions, 39 changer transitions 0/266 dead transitions. [2022-11-25 18:18:18,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 266 transitions, 1211 flow [2022-11-25 18:18:18,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:18:18,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:18:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1624 transitions. [2022-11-25 18:18:18,326 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4481236203090508 [2022-11-25 18:18:18,326 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1624 transitions. [2022-11-25 18:18:18,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1624 transitions. [2022-11-25 18:18:18,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:18:18,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1624 transitions. [2022-11-25 18:18:18,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 270.6666666666667) internal successors, (1624), 6 states have internal predecessors, (1624), 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) [2022-11-25 18:18:18,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 604.0) internal successors, (4228), 7 states have internal predecessors, (4228), 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) [2022-11-25 18:18:18,347 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 604.0) internal successors, (4228), 7 states have internal predecessors, (4228), 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) [2022-11-25 18:18:18,348 INFO L175 Difference]: Start difference. First operand has 115 places, 121 transitions, 335 flow. Second operand 6 states and 1624 transitions. [2022-11-25 18:18:18,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 266 transitions, 1211 flow [2022-11-25 18:18:18,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 266 transitions, 1211 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:18:18,376 INFO L231 Difference]: Finished difference. Result has 125 places, 159 transitions, 717 flow [2022-11-25 18:18:18,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=604, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=717, PETRI_PLACES=125, PETRI_TRANSITIONS=159} [2022-11-25 18:18:18,380 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 7 predicate places. [2022-11-25 18:18:18,381 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 159 transitions, 717 flow [2022-11-25 18:18:18,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 245.83333333333334) internal successors, (1475), 6 states have internal predecessors, (1475), 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) [2022-11-25 18:18:18,382 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:18:18,383 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-25 18:18:18,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:18:18,383 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-25 18:18:18,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:18:18,384 INFO L85 PathProgramCache]: Analyzing trace with hash -781434618, now seen corresponding path program 1 times [2022-11-25 18:18:18,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:18:18,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526094082] [2022-11-25 18:18:18,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:18:18,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:18:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:18:18,410 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:18:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:18:18,438 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:18:18,438 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:18:18,439 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2022-11-25 18:18:18,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2022-11-25 18:18:18,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2022-11-25 18:18:18,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2022-11-25 18:18:18,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2022-11-25 18:18:18,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2022-11-25 18:18:18,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2022-11-25 18:18:18,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2022-11-25 18:18:18,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2022-11-25 18:18:18,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2022-11-25 18:18:18,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2022-11-25 18:18:18,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2022-11-25 18:18:18,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2022-11-25 18:18:18,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2022-11-25 18:18:18,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2022-11-25 18:18:18,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2022-11-25 18:18:18,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2022-11-25 18:18:18,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2022-11-25 18:18:18,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2022-11-25 18:18:18,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2022-11-25 18:18:18,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2022-11-25 18:18:18,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2022-11-25 18:18:18,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2022-11-25 18:18:18,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2022-11-25 18:18:18,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2022-11-25 18:18:18,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2022-11-25 18:18:18,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2022-11-25 18:18:18,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2022-11-25 18:18:18,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2022-11-25 18:18:18,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2022-11-25 18:18:18,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2022-11-25 18:18:18,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2022-11-25 18:18:18,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2022-11-25 18:18:18,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:18:18,450 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-25 18:18:18,451 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 18:18:18,452 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-25 18:18:18,537 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 18:18:18,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 378 transitions, 788 flow [2022-11-25 18:18:18,788 INFO L130 PetriNetUnfolder]: 37/428 cut-off events. [2022-11-25 18:18:18,788 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-25 18:18:18,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 428 events. 37/428 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1512 event pairs, 0 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 349. Up to 10 conditions per place. [2022-11-25 18:18:18,797 INFO L82 GeneralOperation]: Start removeDead. Operand has 354 places, 378 transitions, 788 flow [2022-11-25 18:18:18,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 354 places, 378 transitions, 788 flow [2022-11-25 18:18:18,807 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:18:18,808 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 354 places, 378 transitions, 788 flow [2022-11-25 18:18:18,808 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 354 places, 378 transitions, 788 flow [2022-11-25 18:18:18,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 378 transitions, 788 flow [2022-11-25 18:18:18,938 INFO L130 PetriNetUnfolder]: 37/428 cut-off events. [2022-11-25 18:18:18,938 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-25 18:18:18,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 428 events. 37/428 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1512 event pairs, 0 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 349. Up to 10 conditions per place. [2022-11-25 18:18:18,987 INFO L119 LiptonReduction]: Number of co-enabled transitions 95088 [2022-11-25 18:19:53,444 WARN L233 SmtUtils]: Spent 5.42s 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) [2022-11-25 18:20:02,842 WARN L233 SmtUtils]: Spent 7.02s 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) [2022-11-25 18:20:43,765 WARN L233 SmtUtils]: Spent 5.42s 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)