./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/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_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/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_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/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 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:39:05,881 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:39:05,977 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:39:05,983 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:39:05,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:39:06,010 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:39:06,011 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:39:06,012 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:39:06,013 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:39:06,013 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:39:06,014 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:39:06,015 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:39:06,016 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:39:06,016 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:39:06,017 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:39:06,017 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:39:06,018 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:39:06,019 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:39:06,019 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:39:06,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:39:06,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:39:06,021 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:39:06,022 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:39:06,022 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:39:06,023 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:39:06,024 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:39:06,024 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:39:06,025 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:39:06,025 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:39:06,026 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:39:06,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:06,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:39:06,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:39:06,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:39:06,028 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:39:06,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:39:06,029 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:39:06,029 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:39:06,030 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:39:06,030 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:39:06,030 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:39:06,032 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_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 [2023-11-19 07:39:06,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:39:06,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:39:06,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:39:06,311 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:39:06,312 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:39:06,313 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-11-19 07:39:09,485 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:39:09,823 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:39:09,826 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-11-19 07:39:09,853 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/bin/uautomizer-verify-uCwYo4JHxu/data/d05c1acd8/aee50a5f0f7749bf9fdc4d59c5f9b1b8/FLAGc60de4f4e [2023-11-19 07:39:09,868 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/bin/uautomizer-verify-uCwYo4JHxu/data/d05c1acd8/aee50a5f0f7749bf9fdc4d59c5f9b1b8 [2023-11-19 07:39:09,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:39:09,872 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:39:09,874 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:09,874 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:39:09,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:39:09,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:09" (1/1) ... [2023-11-19 07:39:09,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f0a63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:09, skipping insertion in model container [2023-11-19 07:39:09,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:09" (1/1) ... [2023-11-19 07:39:09,952 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:10,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:10,619 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:39:10,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:10,738 WARN L675 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:39:10,745 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:39:10,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:10 WrapperNode [2023-11-19 07:39:10,746 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:10,748 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:10,748 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:39:10,748 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:39:10,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:10" (1/1) ... [2023-11-19 07:39:10,775 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:10" (1/1) ... [2023-11-19 07:39:10,821 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 151 [2023-11-19 07:39:10,822 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:10,823 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:39:10,823 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:39:10,823 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:39:10,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:10" (1/1) ... [2023-11-19 07:39:10,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:10" (1/1) ... [2023-11-19 07:39:10,847 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:10" (1/1) ... [2023-11-19 07:39:10,847 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:10" (1/1) ... [2023-11-19 07:39:10,856 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:10" (1/1) ... [2023-11-19 07:39:10,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:10" (1/1) ... [2023-11-19 07:39:10,863 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:10" (1/1) ... [2023-11-19 07:39:10,865 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:10" (1/1) ... [2023-11-19 07:39:10,869 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:39:10,870 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:39:10,870 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:39:10,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:39:10,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:10" (1/1) ... [2023-11-19 07:39:10,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:10,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:10,913 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:39:10,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:39:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:39:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:39:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:39:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:39:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:39:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:39:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:39:10,961 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:39:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:39:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:39:10,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:39:10,963 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 07:39:11,105 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:39:11,107 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:39:11,421 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:39:11,432 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:39:11,432 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-19 07:39:11,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:11 BoogieIcfgContainer [2023-11-19 07:39:11,437 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:39:11,439 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:39:11,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:39:11,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:39:11,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:39:09" (1/3) ... [2023-11-19 07:39:11,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5cfbd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:11, skipping insertion in model container [2023-11-19 07:39:11,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:10" (2/3) ... [2023-11-19 07:39:11,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5cfbd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:11, skipping insertion in model container [2023-11-19 07:39:11,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:11" (3/3) ... [2023-11-19 07:39:11,445 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2023-11-19 07:39:11,452 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:39:11,462 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:39:11,462 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 07:39:11,462 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:39:11,562 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:39:11,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 161 transitions, 329 flow [2023-11-19 07:39:11,740 INFO L124 PetriNetUnfolderBase]: 19/221 cut-off events. [2023-11-19 07:39:11,740 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:39:11,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 221 events. 19/221 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 673 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2023-11-19 07:39:11,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 161 transitions, 329 flow [2023-11-19 07:39:11,764 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 161 transitions, 329 flow [2023-11-19 07:39:11,770 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:39:11,784 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 161 transitions, 329 flow [2023-11-19 07:39:11,787 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 161 transitions, 329 flow [2023-11-19 07:39:11,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 161 transitions, 329 flow [2023-11-19 07:39:11,836 INFO L124 PetriNetUnfolderBase]: 19/221 cut-off events. [2023-11-19 07:39:11,836 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:39:11,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 221 events. 19/221 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 673 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2023-11-19 07:39:11,845 INFO L119 LiptonReduction]: Number of co-enabled transitions 7392 [2023-11-19 07:39:15,850 INFO L134 LiptonReduction]: Checked pairs total: 20756 [2023-11-19 07:39:15,851 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-11-19 07:39:15,867 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:39:15,874 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;@3c23ba88, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:39:15,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-19 07:39:15,878 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:39:15,879 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-19 07:39:15,879 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:15,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:15,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:39:15,880 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-19 07:39:15,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:15,886 INFO L85 PathProgramCache]: Analyzing trace with hash 558473921, now seen corresponding path program 1 times [2023-11-19 07:39:15,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:15,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979666728] [2023-11-19 07:39:15,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:15,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:16,200 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 07:39:16,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:16,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979666728] [2023-11-19 07:39:16,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979666728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:16,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:16,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:39:16,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106185093] [2023-11-19 07:39:16,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:16,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:16,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:16,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:16,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:16,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 279 [2023-11-19 07:39:16,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 63 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 07:39:16,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:16,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 279 [2023-11-19 07:39:16,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:16,463 INFO L124 PetriNetUnfolderBase]: 182/526 cut-off events. [2023-11-19 07:39:16,463 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:39:16,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 526 events. 182/526 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2570 event pairs, 156 based on Foata normal form. 58/513 useless extension candidates. Maximal degree in co-relation 907. Up to 382 conditions per place. [2023-11-19 07:39:16,469 INFO L140 encePairwiseOnDemand]: 265/279 looper letters, 42 selfloop transitions, 2 changer transitions 2/66 dead transitions. [2023-11-19 07:39:16,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 66 transitions, 231 flow [2023-11-19 07:39:16,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:16,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 484 transitions. [2023-11-19 07:39:16,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5782556750298686 [2023-11-19 07:39:16,489 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 484 transitions. [2023-11-19 07:39:16,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 484 transitions. [2023-11-19 07:39:16,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:16,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 484 transitions. [2023-11-19 07:39:16,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:16,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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 07:39:16,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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 07:39:16,509 INFO L175 Difference]: Start difference. First operand has 55 places, 63 transitions, 133 flow. Second operand 3 states and 484 transitions. [2023-11-19 07:39:16,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 66 transitions, 231 flow [2023-11-19 07:39:16,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 231 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:39:16,516 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 110 flow [2023-11-19 07:39:16,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2023-11-19 07:39:16,522 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 1 predicate places. [2023-11-19 07:39:16,522 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 110 flow [2023-11-19 07:39:16,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 07:39:16,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:16,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:39:16,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:39:16,524 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-19 07:39:16,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:16,525 INFO L85 PathProgramCache]: Analyzing trace with hash 125676384, now seen corresponding path program 1 times [2023-11-19 07:39:16,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:16,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217975746] [2023-11-19 07:39:16,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:16,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:16,620 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 07:39:16,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:16,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217975746] [2023-11-19 07:39:16,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217975746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:16,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:16,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:39:16,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133896694] [2023-11-19 07:39:16,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:16,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:16,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:16,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:16,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:16,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 279 [2023-11-19 07:39:16,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 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 07:39:16,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:16,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 279 [2023-11-19 07:39:16,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:16,890 INFO L124 PetriNetUnfolderBase]: 358/1015 cut-off events. [2023-11-19 07:39:16,891 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-19 07:39:16,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 1015 events. 358/1015 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6253 event pairs, 23 based on Foata normal form. 0/903 useless extension candidates. Maximal degree in co-relation 1833. Up to 430 conditions per place. [2023-11-19 07:39:16,899 INFO L140 encePairwiseOnDemand]: 275/279 looper letters, 58 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2023-11-19 07:39:16,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 293 flow [2023-11-19 07:39:16,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:16,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:16,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-11-19 07:39:16,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5830346475507766 [2023-11-19 07:39:16,906 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-11-19 07:39:16,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-11-19 07:39:16,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:16,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-11-19 07:39:16,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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 07:39:16,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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 07:39:16,913 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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 07:39:16,913 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 110 flow. Second operand 3 states and 488 transitions. [2023-11-19 07:39:16,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 293 flow [2023-11-19 07:39:16,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 287 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:39:16,917 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 128 flow [2023-11-19 07:39:16,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-11-19 07:39:16,918 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2023-11-19 07:39:16,918 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 128 flow [2023-11-19 07:39:16,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 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 07:39:16,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:16,919 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:39:16,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:39:16,920 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-11-19 07:39:16,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:16,920 INFO L85 PathProgramCache]: Analyzing trace with hash 125690478, now seen corresponding path program 1 times [2023-11-19 07:39:16,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:16,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087310941] [2023-11-19 07:39:16,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:16,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:39:16,969 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:39:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:39:17,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:39:17,030 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:39:17,032 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2023-11-19 07:39:17,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2023-11-19 07:39:17,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2023-11-19 07:39:17,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2023-11-19 07:39:17,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2023-11-19 07:39:17,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2023-11-19 07:39:17,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2023-11-19 07:39:17,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2023-11-19 07:39:17,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2023-11-19 07:39:17,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2023-11-19 07:39:17,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2023-11-19 07:39:17,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2023-11-19 07:39:17,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2023-11-19 07:39:17,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2023-11-19 07:39:17,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:39:17,047 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:39:17,052 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:39:17,052 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:39:17,098 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:39:17,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 219 transitions, 454 flow [2023-11-19 07:39:17,169 INFO L124 PetriNetUnfolderBase]: 34/371 cut-off events. [2023-11-19 07:39:17,170 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:39:17,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 371 events. 34/371 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1413 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 223. Up to 8 conditions per place. [2023-11-19 07:39:17,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 219 transitions, 454 flow [2023-11-19 07:39:17,178 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 219 transitions, 454 flow [2023-11-19 07:39:17,178 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:39:17,179 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 219 transitions, 454 flow [2023-11-19 07:39:17,179 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 219 transitions, 454 flow [2023-11-19 07:39:17,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 219 transitions, 454 flow [2023-11-19 07:39:17,240 INFO L124 PetriNetUnfolderBase]: 34/371 cut-off events. [2023-11-19 07:39:17,240 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:39:17,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 371 events. 34/371 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1413 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 223. Up to 8 conditions per place. [2023-11-19 07:39:17,264 INFO L119 LiptonReduction]: Number of co-enabled transitions 22288 [2023-11-19 07:39:21,370 INFO L134 LiptonReduction]: Checked pairs total: 79524 [2023-11-19 07:39:21,370 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-11-19 07:39:21,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:39:21,380 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;@3c23ba88, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:39:21,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-19 07:39:21,382 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:39:21,383 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-19 07:39:21,383 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:21,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:21,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:39:21,384 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-19 07:39:21,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:21,385 INFO L85 PathProgramCache]: Analyzing trace with hash 959130410, now seen corresponding path program 1 times [2023-11-19 07:39:21,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:21,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568895668] [2023-11-19 07:39:21,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:21,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:21,472 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 07:39:21,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:21,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568895668] [2023-11-19 07:39:21,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568895668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:21,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:21,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:39:21,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137562486] [2023-11-19 07:39:21,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:21,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:21,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:21,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:21,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:21,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 362 [2023-11-19 07:39:21,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 104 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 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 07:39:21,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:21,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 362 [2023-11-19 07:39:21,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:22,966 INFO L124 PetriNetUnfolderBase]: 4783/10228 cut-off events. [2023-11-19 07:39:22,966 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-11-19 07:39:22,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17890 conditions, 10228 events. 4783/10228 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 85549 event pairs, 4548 based on Foata normal form. 1184/10205 useless extension candidates. Maximal degree in co-relation 14231. Up to 7574 conditions per place. [2023-11-19 07:39:23,050 INFO L140 encePairwiseOnDemand]: 342/362 looper letters, 56 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2023-11-19 07:39:23,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 100 transitions, 332 flow [2023-11-19 07:39:23,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:23,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:23,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 652 transitions. [2023-11-19 07:39:23,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6003683241252302 [2023-11-19 07:39:23,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 652 transitions. [2023-11-19 07:39:23,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 652 transitions. [2023-11-19 07:39:23,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:23,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 652 transitions. [2023-11-19 07:39:23,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 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 07:39:23,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 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 07:39:23,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 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 07:39:23,063 INFO L175 Difference]: Start difference. First operand has 91 places, 104 transitions, 224 flow. Second operand 3 states and 652 transitions. [2023-11-19 07:39:23,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 100 transitions, 332 flow [2023-11-19 07:39:23,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 100 transitions, 332 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:39:23,071 INFO L231 Difference]: Finished difference. Result has 92 places, 87 transitions, 200 flow [2023-11-19 07:39:23,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=362, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=92, PETRI_TRANSITIONS=87} [2023-11-19 07:39:23,075 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 1 predicate places. [2023-11-19 07:39:23,076 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 87 transitions, 200 flow [2023-11-19 07:39:23,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 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 07:39:23,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:23,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:39:23,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:39:23,077 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-19 07:39:23,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:23,079 INFO L85 PathProgramCache]: Analyzing trace with hash -334061320, now seen corresponding path program 1 times [2023-11-19 07:39:23,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:23,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873383411] [2023-11-19 07:39:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:23,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:23,146 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 07:39:23,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:23,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873383411] [2023-11-19 07:39:23,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873383411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:23,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:23,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:39:23,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814392386] [2023-11-19 07:39:23,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:23,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:23,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:23,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:23,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:23,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 362 [2023-11-19 07:39:23,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 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 07:39:23,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:23,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 362 [2023-11-19 07:39:23,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:26,191 INFO L124 PetriNetUnfolderBase]: 11266/23061 cut-off events. [2023-11-19 07:39:26,191 INFO L125 PetriNetUnfolderBase]: For 596/596 co-relation queries the response was YES. [2023-11-19 07:39:26,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41643 conditions, 23061 events. 11266/23061 cut-off events. For 596/596 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 214261 event pairs, 3064 based on Foata normal form. 0/20594 useless extension candidates. Maximal degree in co-relation 41525. Up to 10767 conditions per place. [2023-11-19 07:39:26,350 INFO L140 encePairwiseOnDemand]: 355/362 looper letters, 93 selfloop transitions, 5 changer transitions 0/134 dead transitions. [2023-11-19 07:39:26,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 134 transitions, 508 flow [2023-11-19 07:39:26,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:26,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:26,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 665 transitions. [2023-11-19 07:39:26,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6123388581952118 [2023-11-19 07:39:26,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 665 transitions. [2023-11-19 07:39:26,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 665 transitions. [2023-11-19 07:39:26,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:26,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 665 transitions. [2023-11-19 07:39:26,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 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 07:39:26,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 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 07:39:26,362 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 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 07:39:26,362 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 200 flow. Second operand 3 states and 665 transitions. [2023-11-19 07:39:26,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 134 transitions, 508 flow [2023-11-19 07:39:26,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 134 transitions, 505 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:39:26,372 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 242 flow [2023-11-19 07:39:26,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=362, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2023-11-19 07:39:26,377 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 4 predicate places. [2023-11-19 07:39:26,377 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 242 flow [2023-11-19 07:39:26,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 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 07:39:26,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:26,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:26,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:39:26,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-19 07:39:26,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:26,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1290931043, now seen corresponding path program 1 times [2023-11-19 07:39:26,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:26,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67721641] [2023-11-19 07:39:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:26,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:26,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:26,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67721641] [2023-11-19 07:39:26,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67721641] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:39:26,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992676912] [2023-11-19 07:39:26,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:26,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:26,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:26,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:26,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:39:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:26,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:39:26,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:26,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:39:26,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:39:26,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992676912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:26,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:39:26,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-19 07:39:26,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113130581] [2023-11-19 07:39:26,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:26,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:26,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:26,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:26,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:39:26,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 362 [2023-11-19 07:39:26,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 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 07:39:26,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:26,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 362 [2023-11-19 07:39:26,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:29,415 INFO L124 PetriNetUnfolderBase]: 10933/23396 cut-off events. [2023-11-19 07:39:29,415 INFO L125 PetriNetUnfolderBase]: For 2625/2625 co-relation queries the response was YES. [2023-11-19 07:39:29,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43372 conditions, 23396 events. 10933/23396 cut-off events. For 2625/2625 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 223957 event pairs, 9095 based on Foata normal form. 0/20835 useless extension candidates. Maximal degree in co-relation 19351. Up to 16559 conditions per place. [2023-11-19 07:39:29,571 INFO L140 encePairwiseOnDemand]: 357/362 looper letters, 73 selfloop transitions, 7 changer transitions 0/121 dead transitions. [2023-11-19 07:39:29,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 121 transitions, 472 flow [2023-11-19 07:39:29,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:29,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:29,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-11-19 07:39:29,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.585635359116022 [2023-11-19 07:39:29,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-11-19 07:39:29,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-11-19 07:39:29,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:29,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-11-19 07:39:29,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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 07:39:29,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 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 07:39:29,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 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 07:39:29,584 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 242 flow. Second operand 3 states and 636 transitions. [2023-11-19 07:39:29,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 121 transitions, 472 flow [2023-11-19 07:39:29,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 121 transitions, 458 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:39:29,602 INFO L231 Difference]: Finished difference. Result has 96 places, 97 transitions, 283 flow [2023-11-19 07:39:29,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=362, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=96, PETRI_TRANSITIONS=97} [2023-11-19 07:39:29,606 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2023-11-19 07:39:29,606 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 97 transitions, 283 flow [2023-11-19 07:39:29,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 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 07:39:29,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:29,608 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:39:29,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:29,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e135663-4fe9-4bdf-8016-40bb23a1e8f1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:39:29,829 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-19 07:39:29,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:29,829 INFO L85 PathProgramCache]: Analyzing trace with hash -739204565, now seen corresponding path program 1 times [2023-11-19 07:39:29,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:29,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429260382] [2023-11-19 07:39:29,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:29,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:39:29,867 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:39:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:39:29,898 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:39:29,898 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:39:29,899 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-19 07:39:29,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-11-19 07:39:29,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-11-19 07:39:29,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-11-19 07:39:29,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-11-19 07:39:29,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-11-19 07:39:29,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-11-19 07:39:29,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-11-19 07:39:29,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-11-19 07:39:29,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-11-19 07:39:29,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-11-19 07:39:29,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-11-19 07:39:29,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-11-19 07:39:29,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-11-19 07:39:29,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-11-19 07:39:29,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-11-19 07:39:29,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-11-19 07:39:29,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-11-19 07:39:29,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-11-19 07:39:29,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:39:29,908 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:39:29,909 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:39:29,909 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:39:29,973 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:39:29,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 277 transitions, 581 flow [2023-11-19 07:39:30,134 INFO L124 PetriNetUnfolderBase]: 54/568 cut-off events. [2023-11-19 07:39:30,134 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:39:30,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 568 events. 54/568 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2456 event pairs, 1 based on Foata normal form. 0/479 useless extension candidates. Maximal degree in co-relation 379. Up to 16 conditions per place. [2023-11-19 07:39:30,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 277 transitions, 581 flow [2023-11-19 07:39:30,147 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 257 places, 277 transitions, 581 flow [2023-11-19 07:39:30,147 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:39:30,147 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 257 places, 277 transitions, 581 flow [2023-11-19 07:39:30,148 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 257 places, 277 transitions, 581 flow [2023-11-19 07:39:30,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 277 transitions, 581 flow [2023-11-19 07:39:30,297 INFO L124 PetriNetUnfolderBase]: 54/568 cut-off events. [2023-11-19 07:39:30,298 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:39:30,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 568 events. 54/568 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2456 event pairs, 1 based on Foata normal form. 0/479 useless extension candidates. Maximal degree in co-relation 379. Up to 16 conditions per place. [2023-11-19 07:39:30,339 INFO L119 LiptonReduction]: Number of co-enabled transitions 43344 [2023-11-19 07:39:34,997 INFO L134 LiptonReduction]: Checked pairs total: 187363 [2023-11-19 07:39:34,997 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-11-19 07:39:34,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:39:35,000 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;@3c23ba88, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:39:35,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-19 07:39:35,002 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:39:35,003 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-19 07:39:35,003 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:35,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:35,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:39:35,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-19 07:39:35,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:35,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1440066690, now seen corresponding path program 1 times [2023-11-19 07:39:35,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:35,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227960687] [2023-11-19 07:39:35,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:35,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:35,039 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 07:39:35,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:35,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227960687] [2023-11-19 07:39:35,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227960687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:35,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:35,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:39:35,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663428217] [2023-11-19 07:39:35,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:35,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:35,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:35,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:35,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:35,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 446 [2023-11-19 07:39:35,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 141 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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 07:39:35,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:35,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 446 [2023-11-19 07:39:35,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:52,732 INFO L124 PetriNetUnfolderBase]: 97725/165848 cut-off events. [2023-11-19 07:39:52,732 INFO L125 PetriNetUnfolderBase]: For 2021/2021 co-relation queries the response was YES. [2023-11-19 07:39:53,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302544 conditions, 165848 events. 97725/165848 cut-off events. For 2021/2021 co-relation queries the response was YES. Maximal size of possible extension queue 3352. Compared 1642166 event pairs, 92235 based on Foata normal form. 24110/173755 useless extension candidates. Maximal degree in co-relation 133924. Up to 135288 conditions per place. [2023-11-19 07:39:53,881 INFO L140 encePairwiseOnDemand]: 420/446 looper letters, 71 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2023-11-19 07:39:53,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 132 transitions, 437 flow [2023-11-19 07:39:53,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:53,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 823 transitions. [2023-11-19 07:39:53,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6150971599402093 [2023-11-19 07:39:53,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 823 transitions. [2023-11-19 07:39:53,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 823 transitions. [2023-11-19 07:39:53,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:53,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 823 transitions. [2023-11-19 07:39:53,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 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 07:39:53,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 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 07:39:53,905 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 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 07:39:53,905 INFO L175 Difference]: Start difference. First operand has 123 places, 141 transitions, 309 flow. Second operand 3 states and 823 transitions. [2023-11-19 07:39:53,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 132 transitions, 437 flow [2023-11-19 07:39:53,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 132 transitions, 437 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:39:53,918 INFO L231 Difference]: Finished difference. Result has 124 places, 118 transitions, 273 flow [2023-11-19 07:39:53,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=124, PETRI_TRANSITIONS=118} [2023-11-19 07:39:53,920 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 1 predicate places. [2023-11-19 07:39:53,920 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 118 transitions, 273 flow [2023-11-19 07:39:53,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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 07:39:53,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:53,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:39:53,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:39:53,923 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-19 07:39:53,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:53,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1685634429, now seen corresponding path program 1 times [2023-11-19 07:39:53,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:53,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278054826] [2023-11-19 07:39:53,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:53,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:53,953 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 07:39:53,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:53,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278054826] [2023-11-19 07:39:53,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278054826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:53,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:53,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:39:53,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705537073] [2023-11-19 07:39:53,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:53,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:53,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:53,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:53,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:53,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 446 [2023-11-19 07:39:53,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 118 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 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 07:39:53,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:53,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 446 [2023-11-19 07:39:53,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand