./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-nondet/nondet-loop-bound-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff 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_50ef1c3c-c5a1-4c1d-b397-e3c1f86ff98e/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ef1c3c-c5a1-4c1d-b397-e3c1f86ff98e/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ef1c3c-c5a1-4c1d-b397-e3c1f86ff98e/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ef1c3c-c5a1-4c1d-b397-e3c1f86ff98e/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-nondet/nondet-loop-bound-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ef1c3c-c5a1-4c1d-b397-e3c1f86ff98e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ef1c3c-c5a1-4c1d-b397-e3c1f86ff98e/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 9d7936e5b6ec9509cab6289f8b3da6dd07c923c681ccf9d629892aaea9fa54f9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:53:32,672 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:53:32,793 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ef1c3c-c5a1-4c1d-b397-e3c1f86ff98e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:53:32,799 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:53:32,800 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:53:32,850 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:53:32,852 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:53:32,852 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:53:32,854 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:53:32,855 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:53:32,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:53:32,857 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:53:32,858 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:53:32,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:53:32,860 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:53:32,861 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:53:32,861 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:53:32,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:53:32,863 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:53:32,864 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:53:32,865 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:53:32,866 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:53:32,866 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:53:32,867 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:53:32,868 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:53:32,868 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:53:32,869 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:53:32,870 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:53:32,870 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:53:32,871 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:53:32,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:53:32,872 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:53:32,873 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:53:32,874 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:53:32,874 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:53:32,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:53:32,875 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:53:32,876 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:53:32,877 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:53:32,877 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:53:32,878 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:53:32,879 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ef1c3c-c5a1-4c1d-b397-e3c1f86ff98e/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ef1c3c-c5a1-4c1d-b397-e3c1f86ff98e/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d7936e5b6ec9509cab6289f8b3da6dd07c923c681ccf9d629892aaea9fa54f9 [2023-11-19 07:53:33,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:53:33,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:53:33,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:53:33,229 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:53:33,229 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:53:33,230 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ef1c3c-c5a1-4c1d-b397-e3c1f86ff98e/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-nondet/nondet-loop-bound-2.i [2023-11-19 07:53:36,274 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:53:36,610 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:53:36,611 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ef1c3c-c5a1-4c1d-b397-e3c1f86ff98e/sv-benchmarks/c/pthread-nondet/nondet-loop-bound-2.i [2023-11-19 07:53:36,633 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ef1c3c-c5a1-4c1d-b397-e3c1f86ff98e/bin/uautomizer-verify-uCwYo4JHxu/data/69a155fbd/18a9b65297994c20b8ac6449d5f5a0a1/FLAG6f68429ff [2023-11-19 07:53:36,650 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ef1c3c-c5a1-4c1d-b397-e3c1f86ff98e/bin/uautomizer-verify-uCwYo4JHxu/data/69a155fbd/18a9b65297994c20b8ac6449d5f5a0a1 [2023-11-19 07:53:36,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:53:36,655 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:53:36,656 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:53:36,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:53:36,661 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:53:36,662 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:36" (1/1) ... [2023-11-19 07:53:36,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea78fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:36, skipping insertion in model container [2023-11-19 07:53:36,663 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:36" (1/1) ... [2023-11-19 07:53:36,723 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:53:37,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:53:37,156 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:53:37,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:53:37,283 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:53:37,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37 WrapperNode [2023-11-19 07:53:37,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:53:37,286 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:53:37,286 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:53:37,287 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:53:37,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,354 INFO L138 Inliner]: procedures = 170, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 85 [2023-11-19 07:53:37,354 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:53:37,355 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:53:37,355 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:53:37,355 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:53:37,365 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,381 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,384 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,390 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,401 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,402 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,406 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:53:37,407 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:53:37,407 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:53:37,407 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:53:37,408 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (1/1) ... [2023-11-19 07:53:37,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:53:37,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ef1c3c-c5a1-4c1d-b397-e3c1f86ff98e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:37,453 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ef1c3c-c5a1-4c1d-b397-e3c1f86ff98e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:53:37,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ef1c3c-c5a1-4c1d-b397-e3c1f86ff98e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:53:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-19 07:53:37,492 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-19 07:53:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 07:53:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 07:53:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:53:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:53:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:53:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:53:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:53:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:53:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:53:37,496 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:53:37,632 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:53:37,635 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:53:37,862 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:53:37,879 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:53:37,880 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:53:37,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:37 BoogieIcfgContainer [2023-11-19 07:53:37,884 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:53:37,887 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:53:37,887 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:53:37,891 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:53:37,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:53:36" (1/3) ... [2023-11-19 07:53:37,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5c6520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:37, skipping insertion in model container [2023-11-19 07:53:37,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:37" (2/3) ... [2023-11-19 07:53:37,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5c6520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:37, skipping insertion in model container [2023-11-19 07:53:37,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:37" (3/3) ... [2023-11-19 07:53:37,894 INFO L112 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-2.i [2023-11-19 07:53:37,904 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:53:37,913 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:53:37,913 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-19 07:53:37,913 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:53:37,981 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:53:38,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 117 transitions, 242 flow [2023-11-19 07:53:38,088 INFO L124 PetriNetUnfolderBase]: 6/134 cut-off events. [2023-11-19 07:53:38,089 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:53:38,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 134 events. 6/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 207 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 98. Up to 4 conditions per place. [2023-11-19 07:53:38,138 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 117 transitions, 242 flow [2023-11-19 07:53:38,144 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 116 transitions, 239 flow [2023-11-19 07:53:38,160 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:53:38,205 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 116 transitions, 239 flow [2023-11-19 07:53:38,208 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 116 transitions, 239 flow [2023-11-19 07:53:38,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 116 transitions, 239 flow [2023-11-19 07:53:38,259 INFO L124 PetriNetUnfolderBase]: 6/134 cut-off events. [2023-11-19 07:53:38,262 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:53:38,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 134 events. 6/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 207 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 98. Up to 4 conditions per place. [2023-11-19 07:53:38,270 INFO L119 LiptonReduction]: Number of co-enabled transitions 2428 [2023-11-19 07:53:42,296 INFO L134 LiptonReduction]: Checked pairs total: 7160 [2023-11-19 07:53:42,296 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-11-19 07:53:42,312 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:53:42,319 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=LoopHeads, 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;@553b0671, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:53:42,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-19 07:53:42,321 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:53:42,321 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:53:42,321 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:53:42,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:42,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:53:42,322 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-19 07:53:42,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:42,328 INFO L85 PathProgramCache]: Analyzing trace with hash 444, now seen corresponding path program 1 times [2023-11-19 07:53:42,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:42,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239962008] [2023-11-19 07:53:42,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:42,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:42,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:42,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:42,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239962008] [2023-11-19 07:53:42,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239962008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:42,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:42,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:53:42,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518618350] [2023-11-19 07:53:42,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:42,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:53:42,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:42,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:53:42,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:53:42,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 244 [2023-11-19 07:53:42,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 67 flow. Second operand has 2 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 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) [2023-11-19 07:53:42,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:42,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 244 [2023-11-19 07:53:42,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:42,581 INFO L124 PetriNetUnfolderBase]: 82/211 cut-off events. [2023-11-19 07:53:42,581 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:53:42,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 211 events. 82/211 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1045 event pairs, 82 based on Foata normal form. 41/229 useless extension candidates. Maximal degree in co-relation 368. Up to 156 conditions per place. [2023-11-19 07:53:42,586 INFO L140 encePairwiseOnDemand]: 238/244 looper letters, 13 selfloop transitions, 0 changer transitions 0/24 dead transitions. [2023-11-19 07:53:42,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 81 flow [2023-11-19 07:53:42,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:53:42,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:53:42,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 239 transitions. [2023-11-19 07:53:42,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48975409836065575 [2023-11-19 07:53:42,602 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 239 transitions. [2023-11-19 07:53:42,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 239 transitions. [2023-11-19 07:53:42,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:42,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 239 transitions. [2023-11-19 07:53:42,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 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) [2023-11-19 07:53:42,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 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) [2023-11-19 07:53:42,623 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 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) [2023-11-19 07:53:42,625 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 67 flow. Second operand 2 states and 239 transitions. [2023-11-19 07:53:42,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 81 flow [2023-11-19 07:53:42,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 80 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:53:42,630 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 54 flow [2023-11-19 07:53:42,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-11-19 07:53:42,637 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-11-19 07:53:42,637 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 54 flow [2023-11-19 07:53:42,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 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) [2023-11-19 07:53:42,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:42,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:53:42,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:53:42,639 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-19 07:53:42,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:42,642 INFO L85 PathProgramCache]: Analyzing trace with hash 13817190, now seen corresponding path program 1 times [2023-11-19 07:53:42,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:42,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263897891] [2023-11-19 07:53:42,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:42,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:42,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:42,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:42,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263897891] [2023-11-19 07:53:42,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263897891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:42,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:42,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:53:42,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425296667] [2023-11-19 07:53:42,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:42,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:42,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:42,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:42,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:42,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 244 [2023-11-19 07:53:42,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2023-11-19 07:53:42,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:42,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 244 [2023-11-19 07:53:42,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:42,962 INFO L124 PetriNetUnfolderBase]: 173/387 cut-off events. [2023-11-19 07:53:42,962 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:53:42,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 387 events. 173/387 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2105 event pairs, 58 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 715. Up to 227 conditions per place. [2023-11-19 07:53:42,971 INFO L140 encePairwiseOnDemand]: 238/244 looper letters, 22 selfloop transitions, 4 changer transitions 0/33 dead transitions. [2023-11-19 07:53:42,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 33 transitions, 127 flow [2023-11-19 07:53:42,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:42,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:42,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 334 transitions. [2023-11-19 07:53:42,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562841530054645 [2023-11-19 07:53:42,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 334 transitions. [2023-11-19 07:53:42,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 334 transitions. [2023-11-19 07:53:42,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:42,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 334 transitions. [2023-11-19 07:53:42,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2023-11-19 07:53:42,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2023-11-19 07:53:42,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2023-11-19 07:53:42,987 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 54 flow. Second operand 3 states and 334 transitions. [2023-11-19 07:53:42,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 33 transitions, 127 flow [2023-11-19 07:53:42,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 127 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:53:42,994 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 82 flow [2023-11-19 07:53:42,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-11-19 07:53:42,996 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-11-19 07:53:42,996 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 82 flow [2023-11-19 07:53:42,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2023-11-19 07:53:42,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:42,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:53:42,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:53:42,999 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-19 07:53:43,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:43,010 INFO L85 PathProgramCache]: Analyzing trace with hash 428397481, now seen corresponding path program 1 times [2023-11-19 07:53:43,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:43,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836914288] [2023-11-19 07:53:43,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:43,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:43,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:43,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:43,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836914288] [2023-11-19 07:53:43,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836914288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:43,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:43,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:53:43,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338431566] [2023-11-19 07:53:43,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:43,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:43,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:43,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:43,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:43,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 244 [2023-11-19 07:53:43,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2023-11-19 07:53:43,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:43,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 244 [2023-11-19 07:53:43,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:43,185 INFO L124 PetriNetUnfolderBase]: 257/535 cut-off events. [2023-11-19 07:53:43,185 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-11-19 07:53:43,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1177 conditions, 535 events. 257/535 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2657 event pairs, 237 based on Foata normal form. 0/485 useless extension candidates. Maximal degree in co-relation 1171. Up to 448 conditions per place. [2023-11-19 07:53:43,190 INFO L140 encePairwiseOnDemand]: 241/244 looper letters, 17 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-11-19 07:53:43,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 114 flow [2023-11-19 07:53:43,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:43,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:43,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-11-19 07:53:43,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42213114754098363 [2023-11-19 07:53:43,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-11-19 07:53:43,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-11-19 07:53:43,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:43,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-11-19 07:53:43,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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) [2023-11-19 07:53:43,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2023-11-19 07:53:43,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2023-11-19 07:53:43,199 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 82 flow. Second operand 3 states and 309 transitions. [2023-11-19 07:53:43,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 114 flow [2023-11-19 07:53:43,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:53:43,202 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 72 flow [2023-11-19 07:53:43,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-11-19 07:53:43,203 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-11-19 07:53:43,204 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 72 flow [2023-11-19 07:53:43,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2023-11-19 07:53:43,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:43,204 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:43,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:53:43,205 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-19 07:53:43,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:43,206 INFO L85 PathProgramCache]: Analyzing trace with hash -414277043, now seen corresponding path program 1 times [2023-11-19 07:53:43,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:43,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441096576] [2023-11-19 07:53:43,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:43,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:53:43,264 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:53:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:53:43,328 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:53:43,329 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:53:43,330 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-11-19 07:53:43,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-11-19 07:53:43,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-11-19 07:53:43,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-11-19 07:53:43,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-11-19 07:53:43,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2023-11-19 07:53:43,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-11-19 07:53:43,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-11-19 07:53:43,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-11-19 07:53:43,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2023-11-19 07:53:43,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 15 remaining) [2023-11-19 07:53:43,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-11-19 07:53:43,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-11-19 07:53:43,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-11-19 07:53:43,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-11-19 07:53:43,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:53:43,351 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:53:43,354 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:53:43,355 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:53:43,394 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:53:43,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 154 transitions, 328 flow [2023-11-19 07:53:43,438 INFO L124 PetriNetUnfolderBase]: 7/171 cut-off events. [2023-11-19 07:53:43,438 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:53:43,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 171 events. 7/171 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 279 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 178. Up to 6 conditions per place. [2023-11-19 07:53:43,441 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 154 transitions, 328 flow [2023-11-19 07:53:43,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 130 transitions, 273 flow [2023-11-19 07:53:43,443 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:53:43,443 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 130 transitions, 273 flow [2023-11-19 07:53:43,444 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 130 transitions, 273 flow [2023-11-19 07:53:43,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 130 transitions, 273 flow [2023-11-19 07:53:43,476 INFO L124 PetriNetUnfolderBase]: 7/171 cut-off events. [2023-11-19 07:53:43,476 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:53:43,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 171 events. 7/171 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 279 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 137. Up to 6 conditions per place. [2023-11-19 07:53:43,482 INFO L119 LiptonReduction]: Number of co-enabled transitions 4032 [2023-11-19 07:53:47,146 INFO L134 LiptonReduction]: Checked pairs total: 16406 [2023-11-19 07:53:47,147 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-11-19 07:53:47,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:53:47,158 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=LoopHeads, 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;@553b0671, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:53:47,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-19 07:53:47,160 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:53:47,160 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:53:47,161 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:53:47,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:47,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:53:47,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 07:53:47,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:47,162 INFO L85 PathProgramCache]: Analyzing trace with hash 764, now seen corresponding path program 1 times [2023-11-19 07:53:47,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:47,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250565417] [2023-11-19 07:53:47,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:47,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:47,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:47,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250565417] [2023-11-19 07:53:47,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250565417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:47,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:47,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:53:47,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977090654] [2023-11-19 07:53:47,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:47,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:53:47,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:47,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:53:47,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:53:47,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 284 [2023-11-19 07:53:47,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 95 flow. Second operand has 2 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 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) [2023-11-19 07:53:47,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:47,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 284 [2023-11-19 07:53:47,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:47,340 INFO L124 PetriNetUnfolderBase]: 445/1066 cut-off events. [2023-11-19 07:53:47,340 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-19 07:53:47,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1813 conditions, 1066 events. 445/1066 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7474 event pairs, 445 based on Foata normal form. 146/1078 useless extension candidates. Maximal degree in co-relation 1802. Up to 699 conditions per place. [2023-11-19 07:53:47,351 INFO L140 encePairwiseOnDemand]: 278/284 looper letters, 16 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2023-11-19 07:53:47,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 115 flow [2023-11-19 07:53:47,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:53:47,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:53:47,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 306 transitions. [2023-11-19 07:53:47,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5387323943661971 [2023-11-19 07:53:47,353 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 306 transitions. [2023-11-19 07:53:47,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 306 transitions. [2023-11-19 07:53:47,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:47,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 306 transitions. [2023-11-19 07:53:47,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 153.0) internal successors, (306), 2 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) [2023-11-19 07:53:47,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 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) [2023-11-19 07:53:47,358 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 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) [2023-11-19 07:53:47,358 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 95 flow. Second operand 2 states and 306 transitions. [2023-11-19 07:53:47,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 115 flow [2023-11-19 07:53:47,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 35 transitions, 114 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:53:47,360 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 82 flow [2023-11-19 07:53:47,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2023-11-19 07:53:47,361 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -4 predicate places. [2023-11-19 07:53:47,361 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 82 flow [2023-11-19 07:53:47,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 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) [2023-11-19 07:53:47,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:47,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:53:47,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:53:47,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 07:53:47,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:47,363 INFO L85 PathProgramCache]: Analyzing trace with hash 23664656, now seen corresponding path program 1 times [2023-11-19 07:53:47,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:47,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221784674] [2023-11-19 07:53:47,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:47,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:47,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:47,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:47,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221784674] [2023-11-19 07:53:47,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221784674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:47,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:47,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:53:47,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236352050] [2023-11-19 07:53:47,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:47,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:47,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:47,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:47,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:47,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 284 [2023-11-19 07:53:47,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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) [2023-11-19 07:53:47,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:47,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 284 [2023-11-19 07:53:47,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:47,898 INFO L124 PetriNetUnfolderBase]: 2121/3936 cut-off events. [2023-11-19 07:53:47,899 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2023-11-19 07:53:47,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7289 conditions, 3936 events. 2121/3936 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 29351 event pairs, 839 based on Foata normal form. 0/3405 useless extension candidates. Maximal degree in co-relation 7284. Up to 1979 conditions per place. [2023-11-19 07:53:47,937 INFO L140 encePairwiseOnDemand]: 273/284 looper letters, 33 selfloop transitions, 8 changer transitions 0/53 dead transitions. [2023-11-19 07:53:47,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 208 flow [2023-11-19 07:53:47,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:47,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:47,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2023-11-19 07:53:47,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988262910798122 [2023-11-19 07:53:47,941 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2023-11-19 07:53:47,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2023-11-19 07:53:47,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:47,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2023-11-19 07:53:47,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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) [2023-11-19 07:53:47,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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) [2023-11-19 07:53:47,946 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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) [2023-11-19 07:53:47,946 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 82 flow. Second operand 3 states and 425 transitions. [2023-11-19 07:53:47,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 208 flow [2023-11-19 07:53:47,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 208 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:53:47,951 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 152 flow [2023-11-19 07:53:47,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2023-11-19 07:53:47,955 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2023-11-19 07:53:47,955 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 152 flow [2023-11-19 07:53:47,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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) [2023-11-19 07:53:47,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:47,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:53:47,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:53:47,956 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 07:53:47,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:47,957 INFO L85 PathProgramCache]: Analyzing trace with hash 733646981, now seen corresponding path program 1 times [2023-11-19 07:53:47,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:47,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350740623] [2023-11-19 07:53:47,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:47,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:48,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:48,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:48,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350740623] [2023-11-19 07:53:48,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350740623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:48,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:48,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:53:48,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989190892] [2023-11-19 07:53:48,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:48,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:48,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:48,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:48,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:48,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 284 [2023-11-19 07:53:48,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-11-19 07:53:48,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:48,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 284 [2023-11-19 07:53:48,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:48,629 INFO L124 PetriNetUnfolderBase]: 2673/5021 cut-off events. [2023-11-19 07:53:48,629 INFO L125 PetriNetUnfolderBase]: For 2062/2090 co-relation queries the response was YES. [2023-11-19 07:53:48,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11365 conditions, 5021 events. 2673/5021 cut-off events. For 2062/2090 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 38064 event pairs, 2188 based on Foata normal form. 0/4475 useless extension candidates. Maximal degree in co-relation 11358. Up to 3664 conditions per place. [2023-11-19 07:53:48,684 INFO L140 encePairwiseOnDemand]: 281/284 looper letters, 22 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-11-19 07:53:48,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 194 flow [2023-11-19 07:53:48,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:48,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:48,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-11-19 07:53:48,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46830985915492956 [2023-11-19 07:53:48,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-11-19 07:53:48,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-11-19 07:53:48,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:48,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-11-19 07:53:48,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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) [2023-11-19 07:53:48,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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) [2023-11-19 07:53:48,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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) [2023-11-19 07:53:48,692 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 152 flow. Second operand 3 states and 399 transitions. [2023-11-19 07:53:48,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 194 flow [2023-11-19 07:53:48,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:53:48,784 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 134 flow [2023-11-19 07:53:48,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2023-11-19 07:53:48,785 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2023-11-19 07:53:48,785 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 134 flow [2023-11-19 07:53:48,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-11-19 07:53:48,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:48,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:48,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:53:48,786 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 07:53:48,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:48,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1443151054, now seen corresponding path program 1 times [2023-11-19 07:53:48,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:48,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304283310] [2023-11-19 07:53:48,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:48,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:48,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:48,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304283310] [2023-11-19 07:53:48,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304283310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:48,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:48,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:53:48,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262472483] [2023-11-19 07:53:48,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:48,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:48,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:48,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:48,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:48,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 284 [2023-11-19 07:53:48,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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) [2023-11-19 07:53:48,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:48,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 284 [2023-11-19 07:53:48,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:49,310 INFO L124 PetriNetUnfolderBase]: 1795/3582 cut-off events. [2023-11-19 07:53:49,311 INFO L125 PetriNetUnfolderBase]: For 739/792 co-relation queries the response was YES. [2023-11-19 07:53:49,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7566 conditions, 3582 events. 1795/3582 cut-off events. For 739/792 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 28193 event pairs, 1104 based on Foata normal form. 12/3006 useless extension candidates. Maximal degree in co-relation 7559. Up to 2226 conditions per place. [2023-11-19 07:53:49,361 INFO L140 encePairwiseOnDemand]: 278/284 looper letters, 27 selfloop transitions, 9 changer transitions 0/54 dead transitions. [2023-11-19 07:53:49,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 249 flow [2023-11-19 07:53:49,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:49,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-11-19 07:53:49,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4953051643192488 [2023-11-19 07:53:49,365 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-11-19 07:53:49,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-11-19 07:53:49,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:49,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-11-19 07:53:49,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2023-11-19 07:53:49,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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) [2023-11-19 07:53:49,372 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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) [2023-11-19 07:53:49,372 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 134 flow. Second operand 3 states and 422 transitions. [2023-11-19 07:53:49,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 249 flow [2023-11-19 07:53:49,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:53:49,376 INFO L231 Difference]: Finished difference. Result has 47 places, 48 transitions, 202 flow [2023-11-19 07:53:49,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=47, PETRI_TRANSITIONS=48} [2023-11-19 07:53:49,378 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2023-11-19 07:53:49,378 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 48 transitions, 202 flow [2023-11-19 07:53:49,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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) [2023-11-19 07:53:49,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:49,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:49,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:53:49,380 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-19 07:53:49,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:49,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1021250511, now seen corresponding path program 1 times [2023-11-19 07:53:49,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:49,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411727803] [2023-11-19 07:53:49,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:49,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:53:49,413 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:53:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:53:49,443 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:53:49,443 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:53:49,444 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 19 remaining) [2023-11-19 07:53:49,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-11-19 07:53:49,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-11-19 07:53:49,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-11-19 07:53:49,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-11-19 07:53:49,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-11-19 07:53:49,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-11-19 07:53:49,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-11-19 07:53:49,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-11-19 07:53:49,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-11-19 07:53:49,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2023-11-19 07:53:49,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 19 remaining) [2023-11-19 07:53:49,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-11-19 07:53:49,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-11-19 07:53:49,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-11-19 07:53:49,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-11-19 07:53:49,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-11-19 07:53:49,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-11-19 07:53:49,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-11-19 07:53:49,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:53:49,458 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-19 07:53:49,464 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-11-19 07:53:49,465 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:53:49,521 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-11-19 07:53:49,523 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-19 07:53:49,524 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated [2023-11-19 07:53:49,524 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated [2023-11-19 07:53:49,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:53:49 BasicIcfg [2023-11-19 07:53:49,534 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:53:49,534 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:53:49,534 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:53:49,535 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:53:49,535 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:37" (3/4) ... [2023-11-19 07:53:49,537 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:53:49,538 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:53:49,539 INFO L158 Benchmark]: Toolchain (without parser) took 12884.24ms. Allocated memory was 142.6MB in the beginning and 257.9MB in the end (delta: 115.3MB). Free memory was 110.6MB in the beginning and 178.1MB in the end (delta: -67.4MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2023-11-19 07:53:49,539 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 142.6MB. Free memory is still 99.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:53:49,540 INFO L158 Benchmark]: CACSL2BoogieTranslator took 628.68ms. Allocated memory is still 142.6MB. Free memory was 110.3MB in the beginning and 91.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 07:53:49,540 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.48ms. Allocated memory is still 142.6MB. Free memory was 91.0MB in the beginning and 88.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:53:49,540 INFO L158 Benchmark]: Boogie Preprocessor took 51.13ms. Allocated memory is still 142.6MB. Free memory was 88.9MB in the beginning and 87.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:53:49,541 INFO L158 Benchmark]: RCFGBuilder took 477.46ms. Allocated memory is still 142.6MB. Free memory was 87.2MB in the beginning and 72.8MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:53:49,541 INFO L158 Benchmark]: TraceAbstraction took 11646.65ms. Allocated memory was 142.6MB in the beginning and 257.9MB in the end (delta: 115.3MB). Free memory was 72.1MB in the beginning and 178.1MB in the end (delta: -105.9MB). Peak memory consumption was 107.4MB. Max. memory is 16.1GB. [2023-11-19 07:53:49,541 INFO L158 Benchmark]: Witness Printer took 4.24ms. Allocated memory is still 257.9MB. Free memory is still 178.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:53:49,543 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 142.6MB. Free memory is still 99.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 628.68ms. Allocated memory is still 142.6MB. Free memory was 110.3MB in the beginning and 91.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.48ms. Allocated memory is still 142.6MB. Free memory was 91.0MB in the beginning and 88.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.13ms. Allocated memory is still 142.6MB. Free memory was 88.9MB in the beginning and 87.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 477.46ms. Allocated memory is still 142.6MB. Free memory was 87.2MB in the beginning and 72.8MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 11646.65ms. Allocated memory was 142.6MB in the beginning and 257.9MB in the end (delta: 115.3MB). Free memory was 72.1MB in the beginning and 178.1MB in the end (delta: -105.9MB). Peak memory consumption was 107.4MB. Max. memory is 16.1GB. * Witness Printer took 4.24ms. Allocated memory is still 257.9MB. Free memory is still 178.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 117 PlacesBefore, 34 PlacesAfterwards, 116 TransitionsBefore, 30 TransitionsAfterwards, 2428 CoEnabledTransitionPairs, 7 FixpointIterations, 63 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 127 TotalNumberOfCompositions, 7160 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4022, independent: 3765, independent conditional: 0, independent unconditional: 3765, dependent: 257, dependent conditional: 0, dependent unconditional: 257, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1466, independent: 1433, independent conditional: 0, independent unconditional: 1433, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4022, independent: 2332, independent conditional: 0, independent unconditional: 2332, dependent: 224, dependent conditional: 0, dependent unconditional: 224, unknown: 1466, unknown conditional: 0, unknown unconditional: 1466] , Statistics on independence cache: Total cache size (in pairs): 157, Positive cache size: 141, Positive conditional cache size: 0, Positive unconditional cache size: 141, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 133 PlacesBefore, 47 PlacesAfterwards, 130 TransitionsBefore, 41 TransitionsAfterwards, 4032 CoEnabledTransitionPairs, 8 FixpointIterations, 61 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 130 TotalNumberOfCompositions, 16406 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6831, independent: 6404, independent conditional: 0, independent unconditional: 6404, dependent: 427, dependent conditional: 0, dependent unconditional: 427, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2271, independent: 2219, independent conditional: 0, independent unconditional: 2219, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6831, independent: 4185, independent conditional: 0, independent unconditional: 4185, dependent: 375, dependent conditional: 0, dependent unconditional: 375, unknown: 2271, unknown conditional: 0, unknown unconditional: 2271] , Statistics on independence cache: Total cache size (in pairs): 218, Positive cache size: 194, Positive conditional cache size: 0, Positive unconditional cache size: 194, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 693]: Data race detected [2023-11-19 07:53:49,579 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-11-19 07:53:49,584 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-19 07:53:49,585 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated [2023-11-19 07:53:49,586 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated [2023-11-19 07:53:49,608 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-11-19 07:53:49,610 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-19 07:53:49,618 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated [2023-11-19 07:53:49,619 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated Data race detected The following path leads to a data race: [L690] 0 volatile int x; [L691] 0 volatile int n; [L701] 0 pthread_t t1, t2; [L702] 0 int i; [L703] 0 x = 0 [L704] 0 n = __VERIFIER_nondet_uint() [L705] EXPR 0 n >= 20 [L705] EXPR 0 n >= 20 && n < 40 [L705] EXPR 0 n < 40 [L705] EXPR 0 n >= 20 && n < 40 [L705] CALL 0 assume_abort_if_not(n >= 20 && n < 40) [L687] COND FALSE 0 !(!cond) [L705] RET 0 assume_abort_if_not(n >= 20 && n < 40) [L706] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [\old(argc)=52, argc=52, argv={51:50}, argv={51:50}, n=20, t1={3:0}, t2={5:0}, x=0] [L693] 1 x <= n VAL [arg={0:0}, arg={0:0}, n=20, x=0] [L707] 0 i = 0 VAL [\old(argc)=52, argc=52, argv={51:50}, argv={51:50}, i=0, n=20, t1={3:0}, t2={5:0}, x=0] [L707] 0 i < n [L707] COND TRUE 0 i < n [L708] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [\old(argc)=52, arg={0:0}, argc=52, argv={51:50}, argv={51:50}, i=0, n=20, t1={3:0}, t2={5:0}, x=0] [L696] 2 int t; [L697] 2 t = x VAL [arg={0:0}, arg={0:0}, n=20, t=0, x=0] [L698] 2 x = t + 1 VAL [arg={0:0}, arg={0:0}, n=20, t=0, x=1] [L693] 1 x <= n VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, n=20, t=0, x=1] Now there is a data race on ~x~0 between C: x = t + 1 [698] and C: x <= n [693] - UnprovableResult [Line: 697]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 705]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 705]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 708]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 149 locations, 15 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.3s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 63 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 2 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=2, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 184 locations, 19 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.1s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 149 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 181 IncrementalHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 13 mSDtfsCounter, 181 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=4, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-19 07:53:49,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ef1c3c-c5a1-4c1d-b397-e3c1f86ff98e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE