./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-nondet/nondet-array-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051b1ea3-c954-4901-b366-d9c0c9cd02aa/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051b1ea3-c954-4901-b366-d9c0c9cd02aa/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051b1ea3-c954-4901-b366-d9c0c9cd02aa/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051b1ea3-c954-4901-b366-d9c0c9cd02aa/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-nondet/nondet-array-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051b1ea3-c954-4901-b366-d9c0c9cd02aa/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051b1ea3-c954-4901-b366-d9c0c9cd02aa/bin/uautomizer-Dbtcem3rbc --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 e22e1beeef18edf77effe210ae0122c1338eccee79cdab905e0b74599361bc08 --- 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-5e519f3 [2022-11-02 20:43:01,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:43:01,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:43:01,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:43:01,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:43:01,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:43:01,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:43:01,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:43:01,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:43:01,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:43:01,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:43:01,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:43:01,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:43:01,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:43:01,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:43:01,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:43:01,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:43:01,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:43:01,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:43:01,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:43:01,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:43:01,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:43:01,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:43:01,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:43:01,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:43:01,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:43:01,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:43:01,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:43:01,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:43:01,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:43:01,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:43:01,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:43:01,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:43:01,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:43:01,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:43:01,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:43:01,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:43:01,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:43:01,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:43:01,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:43:01,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:43:01,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051b1ea3-c954-4901-b366-d9c0c9cd02aa/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:43:01,276 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:43:01,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:43:01,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:43:01,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:43:01,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:43:01,278 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:43:01,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:43:01,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:43:01,279 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:43:01,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:43:01,279 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:43:01,279 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:43:01,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:43:01,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:43:01,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:43:01,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:43:01,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:43:01,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:43:01,281 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:43:01,281 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:43:01,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:43:01,281 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:43:01,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:43:01,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:43:01,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:43:01,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:43:01,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:43:01,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:43:01,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:43:01,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:43:01,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:43:01,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:43:01,287 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:43:01,287 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:43:01,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:43:01,287 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051b1ea3-c954-4901-b366-d9c0c9cd02aa/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051b1ea3-c954-4901-b366-d9c0c9cd02aa/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e22e1beeef18edf77effe210ae0122c1338eccee79cdab905e0b74599361bc08 [2022-11-02 20:43:01,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:43:01,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:43:01,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:43:01,625 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:43:01,626 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:43:01,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051b1ea3-c954-4901-b366-d9c0c9cd02aa/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-nondet/nondet-array-1.i [2022-11-02 20:43:01,692 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051b1ea3-c954-4901-b366-d9c0c9cd02aa/bin/uautomizer-Dbtcem3rbc/data/cfb560537/90e8ac38e5c2411a8364de99722df5b9/FLAG91d39caa2 [2022-11-02 20:43:02,289 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:43:02,293 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051b1ea3-c954-4901-b366-d9c0c9cd02aa/sv-benchmarks/c/pthread-nondet/nondet-array-1.i [2022-11-02 20:43:02,314 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051b1ea3-c954-4901-b366-d9c0c9cd02aa/bin/uautomizer-Dbtcem3rbc/data/cfb560537/90e8ac38e5c2411a8364de99722df5b9/FLAG91d39caa2 [2022-11-02 20:43:02,581 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051b1ea3-c954-4901-b366-d9c0c9cd02aa/bin/uautomizer-Dbtcem3rbc/data/cfb560537/90e8ac38e5c2411a8364de99722df5b9 [2022-11-02 20:43:02,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:43:02,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:43:02,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:43:02,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:43:02,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:43:02,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:43:02" (1/1) ... [2022-11-02 20:43:02,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3877999a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:02, skipping insertion in model container [2022-11-02 20:43:02,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:43:02" (1/1) ... [2022-11-02 20:43:02,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:43:02,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:43:03,089 WARN L230 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_051b1ea3-c954-4901-b366-d9c0c9cd02aa/sv-benchmarks/c/pthread-nondet/nondet-array-1.i[30035,30048] [2022-11-02 20:43:03,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:43:03,121 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:43:03,161 WARN L230 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_051b1ea3-c954-4901-b366-d9c0c9cd02aa/sv-benchmarks/c/pthread-nondet/nondet-array-1.i[30035,30048] [2022-11-02 20:43:03,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:43:03,225 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:43:03,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:03 WrapperNode [2022-11-02 20:43:03,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:43:03,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:43:03,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:43:03,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:43:03,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:03" (1/1) ... [2022-11-02 20:43:03,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:03" (1/1) ... [2022-11-02 20:43:03,291 INFO L138 Inliner]: procedures = 170, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2022-11-02 20:43:03,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:43:03,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:43:03,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:43:03,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:43:03,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:03" (1/1) ... [2022-11-02 20:43:03,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:03" (1/1) ... [2022-11-02 20:43:03,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:03" (1/1) ... [2022-11-02 20:43:03,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:03" (1/1) ... [2022-11-02 20:43:03,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:03" (1/1) ... [2022-11-02 20:43:03,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:03" (1/1) ... [2022-11-02 20:43:03,318 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:03" (1/1) ... [2022-11-02 20:43:03,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:03" (1/1) ... [2022-11-02 20:43:03,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:43:03,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:43:03,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:43:03,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:43:03,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:03" (1/1) ... [2022-11-02 20:43:03,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:43:03,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051b1ea3-c954-4901-b366-d9c0c9cd02aa/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:03,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051b1ea3-c954-4901-b366-d9c0c9cd02aa/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:43:03,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051b1ea3-c954-4901-b366-d9c0c9cd02aa/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:43:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-02 20:43:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:43:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:43:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2022-11-02 20:43:03,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2022-11-02 20:43:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:43:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:43:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:43:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:43:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:43:03,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:43:03,401 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:43:03,629 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:43:03,634 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:43:03,934 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:43:03,942 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:43:03,942 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:43:03,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:43:03 BoogieIcfgContainer [2022-11-02 20:43:03,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:43:03,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:43:03,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:43:03,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:43:03,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:43:02" (1/3) ... [2022-11-02 20:43:03,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b984803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:43:03, skipping insertion in model container [2022-11-02 20:43:03,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:03" (2/3) ... [2022-11-02 20:43:03,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b984803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:43:03, skipping insertion in model container [2022-11-02 20:43:03,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:43:03" (3/3) ... [2022-11-02 20:43:03,954 INFO L112 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2022-11-02 20:43:03,963 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:43:03,974 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:43:03,975 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-02 20:43:03,975 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:43:04,044 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 20:43:04,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 115 transitions, 238 flow [2022-11-02 20:43:04,141 INFO L130 PetriNetUnfolder]: 12/164 cut-off events. [2022-11-02 20:43:04,142 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-02 20:43:04,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 164 events. 12/164 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 424 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2022-11-02 20:43:04,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 115 transitions, 238 flow [2022-11-02 20:43:04,150 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 115 transitions, 238 flow [2022-11-02 20:43:04,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:43:04,167 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;@53698850, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:43:04,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-02 20:43:04,183 INFO L130 PetriNetUnfolder]: 4/62 cut-off events. [2022-11-02 20:43:04,183 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:43:04,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:04,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:04,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-02 20:43:04,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:04,190 INFO L85 PathProgramCache]: Analyzing trace with hash -462468970, now seen corresponding path program 1 times [2022-11-02 20:43:04,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:04,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182267229] [2022-11-02 20:43:04,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:04,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:04,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:04,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:04,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182267229] [2022-11-02 20:43:04,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182267229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:04,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:04,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:43:04,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523344378] [2022-11-02 20:43:04,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:04,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:04,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:04,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:04,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:04,647 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 115 [2022-11-02 20:43:04,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 115 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2022-11-02 20:43:04,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:04,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 115 [2022-11-02 20:43:04,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:04,781 INFO L130 PetriNetUnfolder]: 3/152 cut-off events. [2022-11-02 20:43:04,782 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-02 20:43:04,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 152 events. 3/152 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 395 event pairs, 0 based on Foata normal form. 24/161 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2022-11-02 20:43:04,784 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 5 selfloop transitions, 2 changer transitions 1/108 dead transitions. [2022-11-02 20:43:04,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 108 transitions, 238 flow [2022-11-02 20:43:04,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:04,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:43:04,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2022-11-02 20:43:04,797 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2022-11-02 20:43:04,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2022-11-02 20:43:04,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2022-11-02 20:43:04,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:04,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2022-11-02 20:43:04,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2022-11-02 20:43:04,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2022-11-02 20:43:04,826 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2022-11-02 20:43:04,828 INFO L175 Difference]: Start difference. First operand has 111 places, 115 transitions, 238 flow. Second operand 3 states and 320 transitions. [2022-11-02 20:43:04,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 108 transitions, 238 flow [2022-11-02 20:43:04,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 108 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:43:04,841 INFO L231 Difference]: Finished difference. Result has 111 places, 107 transitions, 226 flow [2022-11-02 20:43:04,843 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=111, PETRI_TRANSITIONS=107} [2022-11-02 20:43:04,847 INFO L287 CegarLoopForPetriNet]: 111 programPoint places, 0 predicate places. [2022-11-02 20:43:04,847 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 107 transitions, 226 flow [2022-11-02 20:43:04,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2022-11-02 20:43:04,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:04,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:04,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:43:04,850 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-02 20:43:04,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:04,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2041175467, now seen corresponding path program 1 times [2022-11-02 20:43:04,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:04,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665842405] [2022-11-02 20:43:04,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:04,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:05,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:05,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665842405] [2022-11-02 20:43:05,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665842405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:05,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:05,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:43:05,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128777225] [2022-11-02 20:43:05,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:05,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:43:05,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:05,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:43:05,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:43:05,138 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 115 [2022-11-02 20:43:05,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 107 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 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) [2022-11-02 20:43:05,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:05,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 115 [2022-11-02 20:43:05,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:05,421 INFO L130 PetriNetUnfolder]: 2/168 cut-off events. [2022-11-02 20:43:05,422 INFO L131 PetriNetUnfolder]: For 3/21 co-relation queries the response was YES. [2022-11-02 20:43:05,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 168 events. 2/168 cut-off events. For 3/21 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 244 event pairs, 0 based on Foata normal form. 2/155 useless extension candidates. Maximal degree in co-relation 151. Up to 31 conditions per place. [2022-11-02 20:43:05,423 INFO L137 encePairwiseOnDemand]: 104/115 looper letters, 50 selfloop transitions, 7 changer transitions 6/134 dead transitions. [2022-11-02 20:43:05,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 134 transitions, 406 flow [2022-11-02 20:43:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:43:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:43:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2022-11-02 20:43:05,426 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7760869565217391 [2022-11-02 20:43:05,426 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2022-11-02 20:43:05,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2022-11-02 20:43:05,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:05,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2022-11-02 20:43:05,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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) [2022-11-02 20:43:05,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 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) [2022-11-02 20:43:05,434 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 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) [2022-11-02 20:43:05,434 INFO L175 Difference]: Start difference. First operand has 111 places, 107 transitions, 226 flow. Second operand 4 states and 357 transitions. [2022-11-02 20:43:05,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 134 transitions, 406 flow [2022-11-02 20:43:05,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 134 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:43:05,439 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 270 flow [2022-11-02 20:43:05,439 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2022-11-02 20:43:05,440 INFO L287 CegarLoopForPetriNet]: 111 programPoint places, 3 predicate places. [2022-11-02 20:43:05,440 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 270 flow [2022-11-02 20:43:05,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 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) [2022-11-02 20:43:05,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:05,441 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:05,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:43:05,442 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-02 20:43:05,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:05,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1690400802, now seen corresponding path program 1 times [2022-11-02 20:43:05,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:05,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435429290] [2022-11-02 20:43:05,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:05,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:43:05,476 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:43:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:43:05,529 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:43:05,529 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:43:05,531 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-02 20:43:05,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-11-02 20:43:05,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-11-02 20:43:05,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-11-02 20:43:05,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-11-02 20:43:05,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2022-11-02 20:43:05,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-11-02 20:43:05,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-11-02 20:43:05,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-11-02 20:43:05,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:43:05,537 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:43:05,542 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:43:05,543 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:43:05,604 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:43:05,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 294 flow [2022-11-02 20:43:05,654 INFO L130 PetriNetUnfolder]: 23/293 cut-off events. [2022-11-02 20:43:05,654 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-11-02 20:43:05,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 293 events. 23/293 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 913 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 166. Up to 8 conditions per place. [2022-11-02 20:43:05,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 138 transitions, 294 flow [2022-11-02 20:43:05,658 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 138 transitions, 294 flow [2022-11-02 20:43:05,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:43:05,661 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;@53698850, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:43:05,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-02 20:43:05,668 INFO L130 PetriNetUnfolder]: 4/63 cut-off events. [2022-11-02 20:43:05,668 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:43:05,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:05,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:05,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-11-02 20:43:05,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:05,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1469495648, now seen corresponding path program 1 times [2022-11-02 20:43:05,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:05,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332973075] [2022-11-02 20:43:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:05,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:05,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:05,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332973075] [2022-11-02 20:43:05,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332973075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:05,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:05,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:43:05,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858232639] [2022-11-02 20:43:05,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:05,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:05,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:05,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:05,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:05,720 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 138 [2022-11-02 20:43:05,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 138 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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) [2022-11-02 20:43:05,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:05,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 138 [2022-11-02 20:43:05,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:05,967 INFO L130 PetriNetUnfolder]: 76/987 cut-off events. [2022-11-02 20:43:05,968 INFO L131 PetriNetUnfolder]: For 121/141 co-relation queries the response was YES. [2022-11-02 20:43:05,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 987 events. 76/987 cut-off events. For 121/141 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 6318 event pairs, 21 based on Foata normal form. 243/1105 useless extension candidates. Maximal degree in co-relation 528. Up to 88 conditions per place. [2022-11-02 20:43:05,981 INFO L137 encePairwiseOnDemand]: 125/138 looper letters, 23 selfloop transitions, 6 changer transitions 1/145 dead transitions. [2022-11-02 20:43:05,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 145 transitions, 377 flow [2022-11-02 20:43:05,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:05,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:43:05,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2022-11-02 20:43:05,984 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9371980676328503 [2022-11-02 20:43:05,984 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2022-11-02 20:43:05,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2022-11-02 20:43:05,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:05,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2022-11-02 20:43:05,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 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) [2022-11-02 20:43:05,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2022-11-02 20:43:05,989 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2022-11-02 20:43:05,989 INFO L175 Difference]: Start difference. First operand has 135 places, 138 transitions, 294 flow. Second operand 3 states and 388 transitions. [2022-11-02 20:43:05,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 145 transitions, 377 flow [2022-11-02 20:43:05,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 145 transitions, 377 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:43:05,993 INFO L231 Difference]: Finished difference. Result has 138 places, 137 transitions, 332 flow [2022-11-02 20:43:05,994 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=138, PETRI_TRANSITIONS=137} [2022-11-02 20:43:05,995 INFO L287 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2022-11-02 20:43:05,995 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 137 transitions, 332 flow [2022-11-02 20:43:05,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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) [2022-11-02 20:43:05,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:05,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:05,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:43:05,996 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-11-02 20:43:05,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:05,997 INFO L85 PathProgramCache]: Analyzing trace with hash 868079275, now seen corresponding path program 1 times [2022-11-02 20:43:05,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:05,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788058009] [2022-11-02 20:43:05,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:05,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:06,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:06,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:06,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788058009] [2022-11-02 20:43:06,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788058009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:06,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:06,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:43:06,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799974760] [2022-11-02 20:43:06,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:06,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:43:06,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:06,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:43:06,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:43:06,135 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 138 [2022-11-02 20:43:06,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 137 transitions, 332 flow. Second operand has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 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) [2022-11-02 20:43:06,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:06,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 138 [2022-11-02 20:43:06,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:06,427 INFO L130 PetriNetUnfolder]: 21/804 cut-off events. [2022-11-02 20:43:06,427 INFO L131 PetriNetUnfolder]: For 169/430 co-relation queries the response was YES. [2022-11-02 20:43:06,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1203 conditions, 804 events. 21/804 cut-off events. For 169/430 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4718 event pairs, 2 based on Foata normal form. 14/730 useless extension candidates. Maximal degree in co-relation 648. Up to 195 conditions per place. [2022-11-02 20:43:06,437 INFO L137 encePairwiseOnDemand]: 127/138 looper letters, 60 selfloop transitions, 8 changer transitions 3/170 dead transitions. [2022-11-02 20:43:06,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 170 transitions, 546 flow [2022-11-02 20:43:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:43:06,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:43:06,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2022-11-02 20:43:06,439 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8134057971014492 [2022-11-02 20:43:06,439 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2022-11-02 20:43:06,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2022-11-02 20:43:06,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:06,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2022-11-02 20:43:06,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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) [2022-11-02 20:43:06,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 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) [2022-11-02 20:43:06,444 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 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) [2022-11-02 20:43:06,444 INFO L175 Difference]: Start difference. First operand has 138 places, 137 transitions, 332 flow. Second operand 4 states and 449 transitions. [2022-11-02 20:43:06,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 170 transitions, 546 flow [2022-11-02 20:43:06,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 170 transitions, 534 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:43:06,451 INFO L231 Difference]: Finished difference. Result has 141 places, 143 transitions, 382 flow [2022-11-02 20:43:06,451 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=382, PETRI_PLACES=141, PETRI_TRANSITIONS=143} [2022-11-02 20:43:06,453 INFO L287 CegarLoopForPetriNet]: 135 programPoint places, 6 predicate places. [2022-11-02 20:43:06,454 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 143 transitions, 382 flow [2022-11-02 20:43:06,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 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) [2022-11-02 20:43:06,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:06,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:06,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:43:06,455 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-11-02 20:43:06,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:06,455 INFO L85 PathProgramCache]: Analyzing trace with hash 199791653, now seen corresponding path program 1 times [2022-11-02 20:43:06,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:06,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247233856] [2022-11-02 20:43:06,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:06,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:06,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:06,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247233856] [2022-11-02 20:43:06,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247233856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:06,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:06,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:43:06,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578957362] [2022-11-02 20:43:06,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:06,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:43:06,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:06,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:43:06,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:43:06,920 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 138 [2022-11-02 20:43:06,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 143 transitions, 382 flow. Second operand has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 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) [2022-11-02 20:43:06,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:06,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 138 [2022-11-02 20:43:06,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:09,452 INFO L130 PetriNetUnfolder]: 3927/11366 cut-off events. [2022-11-02 20:43:09,452 INFO L131 PetriNetUnfolder]: For 391/406 co-relation queries the response was YES. [2022-11-02 20:43:09,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19467 conditions, 11366 events. 3927/11366 cut-off events. For 391/406 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 105184 event pairs, 1618 based on Foata normal form. 0/9959 useless extension candidates. Maximal degree in co-relation 11181. Up to 4733 conditions per place. [2022-11-02 20:43:09,534 INFO L137 encePairwiseOnDemand]: 119/138 looper letters, 95 selfloop transitions, 48 changer transitions 0/248 dead transitions. [2022-11-02 20:43:09,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 248 transitions, 910 flow [2022-11-02 20:43:09,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:43:09,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:43:09,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 708 transitions. [2022-11-02 20:43:09,536 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.855072463768116 [2022-11-02 20:43:09,536 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 708 transitions. [2022-11-02 20:43:09,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 708 transitions. [2022-11-02 20:43:09,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:09,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 708 transitions. [2022-11-02 20:43:09,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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) [2022-11-02 20:43:09,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 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) [2022-11-02 20:43:09,541 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 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) [2022-11-02 20:43:09,542 INFO L175 Difference]: Start difference. First operand has 141 places, 143 transitions, 382 flow. Second operand 6 states and 708 transitions. [2022-11-02 20:43:09,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 248 transitions, 910 flow [2022-11-02 20:43:09,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 248 transitions, 908 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-02 20:43:09,551 INFO L231 Difference]: Finished difference. Result has 150 places, 192 transitions, 684 flow [2022-11-02 20:43:09,552 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=684, PETRI_PLACES=150, PETRI_TRANSITIONS=192} [2022-11-02 20:43:09,552 INFO L287 CegarLoopForPetriNet]: 135 programPoint places, 15 predicate places. [2022-11-02 20:43:09,552 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 192 transitions, 684 flow [2022-11-02 20:43:09,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 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) [2022-11-02 20:43:09,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:09,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:09,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:43:09,553 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-11-02 20:43:09,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:09,554 INFO L85 PathProgramCache]: Analyzing trace with hash -329294290, now seen corresponding path program 1 times [2022-11-02 20:43:09,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:09,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592160656] [2022-11-02 20:43:09,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:09,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:43:09,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:09,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592160656] [2022-11-02 20:43:09,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592160656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:09,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:09,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:43:09,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277676494] [2022-11-02 20:43:09,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:09,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:43:09,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:09,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:43:09,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:43:09,938 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 138 [2022-11-02 20:43:09,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 192 transitions, 684 flow. Second operand has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:09,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:09,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 138 [2022-11-02 20:43:09,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:13,885 INFO L130 PetriNetUnfolder]: 7809/21143 cut-off events. [2022-11-02 20:43:13,885 INFO L131 PetriNetUnfolder]: For 10163/10331 co-relation queries the response was YES. [2022-11-02 20:43:13,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49556 conditions, 21143 events. 7809/21143 cut-off events. For 10163/10331 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 219541 event pairs, 3704 based on Foata normal form. 62/19238 useless extension candidates. Maximal degree in co-relation 43010. Up to 12399 conditions per place. [2022-11-02 20:43:14,080 INFO L137 encePairwiseOnDemand]: 123/138 looper letters, 120 selfloop transitions, 72 changer transitions 0/282 dead transitions. [2022-11-02 20:43:14,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 282 transitions, 1480 flow [2022-11-02 20:43:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:43:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:43:14,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 594 transitions. [2022-11-02 20:43:14,084 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.717391304347826 [2022-11-02 20:43:14,084 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 594 transitions. [2022-11-02 20:43:14,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 594 transitions. [2022-11-02 20:43:14,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:14,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 594 transitions. [2022-11-02 20:43:14,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:14,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 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) [2022-11-02 20:43:14,089 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 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) [2022-11-02 20:43:14,089 INFO L175 Difference]: Start difference. First operand has 150 places, 192 transitions, 684 flow. Second operand 6 states and 594 transitions. [2022-11-02 20:43:14,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 282 transitions, 1480 flow [2022-11-02 20:43:14,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 282 transitions, 1480 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:43:14,238 INFO L231 Difference]: Finished difference. Result has 160 places, 259 transitions, 1362 flow [2022-11-02 20:43:14,239 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1362, PETRI_PLACES=160, PETRI_TRANSITIONS=259} [2022-11-02 20:43:14,240 INFO L287 CegarLoopForPetriNet]: 135 programPoint places, 25 predicate places. [2022-11-02 20:43:14,240 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 259 transitions, 1362 flow [2022-11-02 20:43:14,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:14,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:14,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:14,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:43:14,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-11-02 20:43:14,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:14,242 INFO L85 PathProgramCache]: Analyzing trace with hash 202802194, now seen corresponding path program 1 times [2022-11-02 20:43:14,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:14,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047484232] [2022-11-02 20:43:14,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:14,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:14,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:14,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047484232] [2022-11-02 20:43:14,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047484232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:14,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:14,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:43:14,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261121378] [2022-11-02 20:43:14,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:14,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:14,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:14,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:14,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:14,284 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 138 [2022-11-02 20:43:14,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 259 transitions, 1362 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2022-11-02 20:43:14,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:14,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 138 [2022-11-02 20:43:14,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:15,774 INFO L130 PetriNetUnfolder]: 2447/9957 cut-off events. [2022-11-02 20:43:15,774 INFO L131 PetriNetUnfolder]: For 5004/5374 co-relation queries the response was YES. [2022-11-02 20:43:15,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22309 conditions, 9957 events. 2447/9957 cut-off events. For 5004/5374 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 105222 event pairs, 330 based on Foata normal form. 19/9129 useless extension candidates. Maximal degree in co-relation 19304. Up to 1784 conditions per place. [2022-11-02 20:43:15,849 INFO L137 encePairwiseOnDemand]: 132/138 looper letters, 29 selfloop transitions, 7 changer transitions 0/271 dead transitions. [2022-11-02 20:43:15,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 271 transitions, 1478 flow [2022-11-02 20:43:15,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:15,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:43:15,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2022-11-02 20:43:15,851 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8961352657004831 [2022-11-02 20:43:15,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2022-11-02 20:43:15,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2022-11-02 20:43:15,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:15,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2022-11-02 20:43:15,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 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) [2022-11-02 20:43:15,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2022-11-02 20:43:15,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2022-11-02 20:43:15,854 INFO L175 Difference]: Start difference. First operand has 160 places, 259 transitions, 1362 flow. Second operand 3 states and 371 transitions. [2022-11-02 20:43:15,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 271 transitions, 1478 flow [2022-11-02 20:43:15,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 271 transitions, 1454 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-11-02 20:43:15,896 INFO L231 Difference]: Finished difference. Result has 164 places, 264 transitions, 1394 flow [2022-11-02 20:43:15,897 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1394, PETRI_PLACES=164, PETRI_TRANSITIONS=264} [2022-11-02 20:43:15,898 INFO L287 CegarLoopForPetriNet]: 135 programPoint places, 29 predicate places. [2022-11-02 20:43:15,898 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 264 transitions, 1394 flow [2022-11-02 20:43:15,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2022-11-02 20:43:15,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:15,899 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:15,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:43:15,899 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-11-02 20:43:15,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:15,900 INFO L85 PathProgramCache]: Analyzing trace with hash 707062480, now seen corresponding path program 1 times [2022-11-02 20:43:15,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:15,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098239101] [2022-11-02 20:43:15,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:15,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:43:15,920 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:43:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:43:15,952 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:43:15,953 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:43:15,953 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2022-11-02 20:43:15,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2022-11-02 20:43:15,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2022-11-02 20:43:15,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2022-11-02 20:43:15,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2022-11-02 20:43:15,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2022-11-02 20:43:15,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2022-11-02 20:43:15,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2022-11-02 20:43:15,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2022-11-02 20:43:15,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2022-11-02 20:43:15,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2022-11-02 20:43:15,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2022-11-02 20:43:15,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:43:15,958 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-02 20:43:15,960 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:43:15,961 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:43:15,995 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:43:16,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 161 transitions, 352 flow [2022-11-02 20:43:16,087 INFO L130 PetriNetUnfolder]: 45/519 cut-off events. [2022-11-02 20:43:16,087 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2022-11-02 20:43:16,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 519 events. 45/519 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1971 event pairs, 1 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2022-11-02 20:43:16,091 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 161 transitions, 352 flow [2022-11-02 20:43:16,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 161 transitions, 352 flow [2022-11-02 20:43:16,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:43:16,100 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;@53698850, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:43:16,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-02 20:43:16,105 INFO L130 PetriNetUnfolder]: 4/64 cut-off events. [2022-11-02 20:43:16,105 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:43:16,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:16,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:16,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-02 20:43:16,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:16,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1928681673, now seen corresponding path program 1 times [2022-11-02 20:43:16,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:16,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057660697] [2022-11-02 20:43:16,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:16,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:16,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:16,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:16,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057660697] [2022-11-02 20:43:16,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057660697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:16,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:16,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:43:16,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594989894] [2022-11-02 20:43:16,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:16,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:16,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:16,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:16,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:16,137 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 161 [2022-11-02 20:43:16,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 161 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 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) [2022-11-02 20:43:16,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:16,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 161 [2022-11-02 20:43:16,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:17,585 INFO L130 PetriNetUnfolder]: 1329/8445 cut-off events. [2022-11-02 20:43:17,585 INFO L131 PetriNetUnfolder]: For 1500/1807 co-relation queries the response was YES. [2022-11-02 20:43:17,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10980 conditions, 8445 events. 1329/8445 cut-off events. For 1500/1807 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 96738 event pairs, 536 based on Foata normal form. 2381/9599 useless extension candidates. Maximal degree in co-relation 7974. Up to 1145 conditions per place. [2022-11-02 20:43:17,735 INFO L137 encePairwiseOnDemand]: 144/161 looper letters, 35 selfloop transitions, 9 changer transitions 1/175 dead transitions. [2022-11-02 20:43:17,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 175 transitions, 489 flow [2022-11-02 20:43:17,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:17,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:43:17,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2022-11-02 20:43:17,738 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9296066252587992 [2022-11-02 20:43:17,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2022-11-02 20:43:17,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2022-11-02 20:43:17,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:17,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2022-11-02 20:43:17,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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) [2022-11-02 20:43:17,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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) [2022-11-02 20:43:17,742 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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) [2022-11-02 20:43:17,742 INFO L175 Difference]: Start difference. First operand has 159 places, 161 transitions, 352 flow. Second operand 3 states and 449 transitions. [2022-11-02 20:43:17,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 175 transitions, 489 flow [2022-11-02 20:43:17,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 175 transitions, 489 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:43:17,747 INFO L231 Difference]: Finished difference. Result has 162 places, 163 transitions, 416 flow [2022-11-02 20:43:17,748 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=416, PETRI_PLACES=162, PETRI_TRANSITIONS=163} [2022-11-02 20:43:17,751 INFO L287 CegarLoopForPetriNet]: 159 programPoint places, 3 predicate places. [2022-11-02 20:43:17,751 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 163 transitions, 416 flow [2022-11-02 20:43:17,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 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) [2022-11-02 20:43:17,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:17,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:17,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:43:17,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-02 20:43:17,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:17,753 INFO L85 PathProgramCache]: Analyzing trace with hash -500532949, now seen corresponding path program 1 times [2022-11-02 20:43:17,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:17,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943922615] [2022-11-02 20:43:17,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:17,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:17,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:17,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:17,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943922615] [2022-11-02 20:43:17,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943922615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:17,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:17,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:43:17,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835839344] [2022-11-02 20:43:17,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:17,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:43:17,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:17,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:43:17,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:43:17,858 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 161 [2022-11-02 20:43:17,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 163 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 117.8) internal successors, (589), 5 states have internal predecessors, (589), 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) [2022-11-02 20:43:17,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:17,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 161 [2022-11-02 20:43:17,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:18,975 INFO L130 PetriNetUnfolder]: 200/4517 cut-off events. [2022-11-02 20:43:18,975 INFO L131 PetriNetUnfolder]: For 799/2366 co-relation queries the response was YES. [2022-11-02 20:43:19,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6824 conditions, 4517 events. 200/4517 cut-off events. For 799/2366 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 47234 event pairs, 48 based on Foata normal form. 73/4074 useless extension candidates. Maximal degree in co-relation 4479. Up to 1166 conditions per place. [2022-11-02 20:43:19,029 INFO L137 encePairwiseOnDemand]: 150/161 looper letters, 63 selfloop transitions, 8 changer transitions 3/197 dead transitions. [2022-11-02 20:43:19,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 197 transitions, 641 flow [2022-11-02 20:43:19,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:43:19,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:43:19,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 536 transitions. [2022-11-02 20:43:19,032 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8322981366459627 [2022-11-02 20:43:19,032 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 536 transitions. [2022-11-02 20:43:19,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 536 transitions. [2022-11-02 20:43:19,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:19,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 536 transitions. [2022-11-02 20:43:19,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2022-11-02 20:43:19,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 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) [2022-11-02 20:43:19,036 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 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) [2022-11-02 20:43:19,037 INFO L175 Difference]: Start difference. First operand has 162 places, 163 transitions, 416 flow. Second operand 4 states and 536 transitions. [2022-11-02 20:43:19,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 197 transitions, 641 flow [2022-11-02 20:43:19,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 197 transitions, 623 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:43:19,043 INFO L231 Difference]: Finished difference. Result has 165 places, 169 transitions, 460 flow [2022-11-02 20:43:19,043 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=460, PETRI_PLACES=165, PETRI_TRANSITIONS=169} [2022-11-02 20:43:19,044 INFO L287 CegarLoopForPetriNet]: 159 programPoint places, 6 predicate places. [2022-11-02 20:43:19,044 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 169 transitions, 460 flow [2022-11-02 20:43:19,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.8) internal successors, (589), 5 states have internal predecessors, (589), 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) [2022-11-02 20:43:19,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:19,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:19,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:43:19,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-02 20:43:19,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:19,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1854835780, now seen corresponding path program 1 times [2022-11-02 20:43:19,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:19,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304681026] [2022-11-02 20:43:19,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:19,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:19,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:19,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304681026] [2022-11-02 20:43:19,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304681026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:19,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:19,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:43:19,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578403006] [2022-11-02 20:43:19,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:19,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:43:19,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:19,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:43:19,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:43:19,416 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 161 [2022-11-02 20:43:19,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 169 transitions, 460 flow. Second operand has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 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) [2022-11-02 20:43:19,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:19,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 161 [2022-11-02 20:43:19,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:55,948 INFO L130 PetriNetUnfolder]: 97664/232670 cut-off events. [2022-11-02 20:43:55,948 INFO L131 PetriNetUnfolder]: For 8835/8925 co-relation queries the response was YES. [2022-11-02 20:43:56,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403151 conditions, 232670 events. 97664/232670 cut-off events. For 8835/8925 co-relation queries the response was YES. Maximal size of possible extension queue 3460. Compared 3094136 event pairs, 44056 based on Foata normal form. 0/203278 useless extension candidates. Maximal degree in co-relation 348336. Up to 94224 conditions per place. [2022-11-02 20:43:57,541 INFO L137 encePairwiseOnDemand]: 138/161 looper letters, 130 selfloop transitions, 58 changer transitions 0/310 dead transitions. [2022-11-02 20:43:57,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 310 transitions, 1190 flow [2022-11-02 20:43:57,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:43:57,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:43:57,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 837 transitions. [2022-11-02 20:43:57,544 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8664596273291926 [2022-11-02 20:43:57,544 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 837 transitions. [2022-11-02 20:43:57,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 837 transitions. [2022-11-02 20:43:57,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:57,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 837 transitions. [2022-11-02 20:43:57,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 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) [2022-11-02 20:43:57,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 161.0) internal successors, (1127), 7 states have internal predecessors, (1127), 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) [2022-11-02 20:43:57,548 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 161.0) internal successors, (1127), 7 states have internal predecessors, (1127), 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) [2022-11-02 20:43:57,548 INFO L175 Difference]: Start difference. First operand has 165 places, 169 transitions, 460 flow. Second operand 6 states and 837 transitions. [2022-11-02 20:43:57,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 310 transitions, 1190 flow [2022-11-02 20:43:57,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 310 transitions, 1188 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-02 20:43:57,754 INFO L231 Difference]: Finished difference. Result has 174 places, 229 transitions, 832 flow [2022-11-02 20:43:57,755 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=832, PETRI_PLACES=174, PETRI_TRANSITIONS=229} [2022-11-02 20:43:57,755 INFO L287 CegarLoopForPetriNet]: 159 programPoint places, 15 predicate places. [2022-11-02 20:43:57,755 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 229 transitions, 832 flow [2022-11-02 20:43:57,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 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) [2022-11-02 20:43:57,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:57,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:57,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:43:57,757 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-02 20:43:57,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:57,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1530286941, now seen corresponding path program 1 times [2022-11-02 20:43:57,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:57,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417211707] [2022-11-02 20:43:57,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:57,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:43:57,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:57,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417211707] [2022-11-02 20:43:57,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417211707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:57,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:57,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:43:57,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152894821] [2022-11-02 20:43:57,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:57,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:43:57,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:57,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:43:57,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:43:57,993 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 161 [2022-11-02 20:43:57,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 229 transitions, 832 flow. Second operand has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:57,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:57,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 161 [2022-11-02 20:43:57,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand