./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_16-ps_add1_rc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b 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_df8ccedf-59af-44e4-af19-553e8691ab6c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8ccedf-59af-44e4-af19-553e8691ab6c/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8ccedf-59af-44e4-af19-553e8691ab6c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8ccedf-59af-44e4-af19-553e8691ab6c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_16-ps_add1_rc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8ccedf-59af-44e4-af19-553e8691ab6c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8ccedf-59af-44e4-af19-553e8691ab6c/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6ac8e3fa6c8942d1934329d4aab2bad69a86bc8873927fe052914d5204c0486 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:00:47,495 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:00:47,589 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8ccedf-59af-44e4-af19-553e8691ab6c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 23:00:47,595 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:00:47,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:00:47,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:00:47,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:00:47,621 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:00:47,622 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:00:47,623 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:00:47,624 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:00:47,624 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:00:47,625 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:00:47,626 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:00:47,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:00:47,627 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:00:47,627 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:00:47,628 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:00:47,628 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:00:47,629 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:00:47,630 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:00:47,630 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:00:47,631 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 23:00:47,632 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:00:47,632 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:00:47,633 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:00:47,633 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:00:47,634 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:00:47,634 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:00:47,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:00:47,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:00:47,636 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:00:47,636 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:00:47,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:00:47,637 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:00:47,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:00:47,638 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:00:47,639 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:00:47,639 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:00:47,640 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:00:47,640 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:00:47,640 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_df8ccedf-59af-44e4-af19-553e8691ab6c/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8ccedf-59af-44e4-af19-553e8691ab6c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6ac8e3fa6c8942d1934329d4aab2bad69a86bc8873927fe052914d5204c0486 [2023-11-06 23:00:47,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:00:47,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:00:47,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:00:47,968 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:00:47,969 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:00:47,970 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8ccedf-59af-44e4-af19-553e8691ab6c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/04-mutex_16-ps_add1_rc.i [2023-11-06 23:00:51,137 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:00:51,520 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:00:51,520 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8ccedf-59af-44e4-af19-553e8691ab6c/sv-benchmarks/c/goblint-regression/04-mutex_16-ps_add1_rc.i [2023-11-06 23:00:51,544 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8ccedf-59af-44e4-af19-553e8691ab6c/bin/uautomizer-verify-WvqO1wxjHP/data/da2a612f9/fbcc942fd59545b6ba681bd5a8946ac4/FLAG2de57bfff [2023-11-06 23:00:51,559 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8ccedf-59af-44e4-af19-553e8691ab6c/bin/uautomizer-verify-WvqO1wxjHP/data/da2a612f9/fbcc942fd59545b6ba681bd5a8946ac4 [2023-11-06 23:00:51,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:00:51,567 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:00:51,575 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:00:51,576 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:00:51,581 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:00:51,582 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:00:51" (1/1) ... [2023-11-06 23:00:51,583 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb17ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:51, skipping insertion in model container [2023-11-06 23:00:51,583 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:00:51" (1/1) ... [2023-11-06 23:00:51,633 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:00:52,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:00:52,133 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:00:52,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:00:52,248 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:00:52,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52 WrapperNode [2023-11-06 23:00:52,248 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:00:52,250 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:00:52,250 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:00:52,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:00:52,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2023-11-06 23:00:52,274 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2023-11-06 23:00:52,296 INFO L138 Inliner]: procedures = 266, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2023-11-06 23:00:52,297 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:00:52,297 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:00:52,298 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:00:52,298 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:00:52,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2023-11-06 23:00:52,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2023-11-06 23:00:52,310 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2023-11-06 23:00:52,311 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2023-11-06 23:00:52,316 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2023-11-06 23:00:52,330 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2023-11-06 23:00:52,332 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2023-11-06 23:00:52,334 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2023-11-06 23:00:52,336 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:00:52,337 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:00:52,337 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:00:52,338 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:00:52,338 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (1/1) ... [2023-11-06 23:00:52,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:00:52,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8ccedf-59af-44e4-af19-553e8691ab6c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:52,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8ccedf-59af-44e4-af19-553e8691ab6c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:52,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8ccedf-59af-44e4-af19-553e8691ab6c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:00:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:00:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:00:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:00:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 23:00:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:00:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 23:00:52,418 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 23:00:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:00:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:00:52,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:00:52,421 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:00:52,626 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:00:52,629 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:00:52,837 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:00:52,846 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:00:52,847 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 23:00:52,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:52 BoogieIcfgContainer [2023-11-06 23:00:52,849 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:00:52,853 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:00:52,853 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:00:52,857 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:00:52,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:00:51" (1/3) ... [2023-11-06 23:00:52,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a481f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:00:52, skipping insertion in model container [2023-11-06 23:00:52,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:52" (2/3) ... [2023-11-06 23:00:52,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a481f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:00:52, skipping insertion in model container [2023-11-06 23:00:52,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:52" (3/3) ... [2023-11-06 23:00:52,864 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_16-ps_add1_rc.i [2023-11-06 23:00:52,877 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:00:52,891 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:00:52,891 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-06 23:00:52,893 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:00:52,966 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 23:00:53,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 76 transitions, 156 flow [2023-11-06 23:00:53,088 INFO L124 PetriNetUnfolderBase]: 3/75 cut-off events. [2023-11-06 23:00:53,088 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:00:53,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 101 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-11-06 23:00:53,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 76 transitions, 156 flow [2023-11-06 23:00:53,098 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 75 transitions, 153 flow [2023-11-06 23:00:53,102 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:00:53,121 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 75 transitions, 153 flow [2023-11-06 23:00:53,124 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 75 transitions, 153 flow [2023-11-06 23:00:53,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 75 transitions, 153 flow [2023-11-06 23:00:53,175 INFO L124 PetriNetUnfolderBase]: 3/75 cut-off events. [2023-11-06 23:00:53,176 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:00:53,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 101 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-11-06 23:00:53,182 INFO L119 LiptonReduction]: Number of co-enabled transitions 1258 [2023-11-06 23:00:55,388 INFO L134 LiptonReduction]: Checked pairs total: 3579 [2023-11-06 23:00:55,388 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-11-06 23:00:55,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:00:55,423 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@264c0453, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:00:55,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-06 23:00:55,427 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:00:55,427 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-06 23:00:55,427 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:00:55,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:00:55,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:00:55,429 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 23:00:55,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:55,434 INFO L85 PathProgramCache]: Analyzing trace with hash 261434545, now seen corresponding path program 1 times [2023-11-06 23:00:55,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:55,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409784503] [2023-11-06 23:00:55,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:55,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:55,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:55,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409784503] [2023-11-06 23:00:55,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409784503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:55,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:00:55,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:00:55,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501544691] [2023-11-06 23:00:55,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:55,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:00:55,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:55,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:00:55,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:00:55,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 140 [2023-11-06 23:00:55,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2023-11-06 23:00:55,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:00:55,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 140 [2023-11-06 23:00:55,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:00:55,895 INFO L124 PetriNetUnfolderBase]: 63/168 cut-off events. [2023-11-06 23:00:55,896 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:00:55,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 168 events. 63/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 673 event pairs, 23 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 305. Up to 82 conditions per place. [2023-11-06 23:00:55,900 INFO L140 encePairwiseOnDemand]: 132/140 looper letters, 26 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2023-11-06 23:00:55,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 37 transitions, 141 flow [2023-11-06 23:00:55,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:00:55,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:00:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-11-06 23:00:55,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2023-11-06 23:00:55,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-11-06 23:00:55,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-11-06 23:00:55,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:55,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-11-06 23:00:55,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2023-11-06 23:00:55,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-11-06 23:00:55,931 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-11-06 23:00:55,933 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 49 flow. Second operand 3 states and 235 transitions. [2023-11-06 23:00:55,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 37 transitions, 141 flow [2023-11-06 23:00:55,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 37 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:00:55,938 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 100 flow [2023-11-06 23:00:55,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-11-06 23:00:55,944 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-11-06 23:00:55,944 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 100 flow [2023-11-06 23:00:55,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2023-11-06 23:00:55,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:00:55,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:00:55,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:00:55,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 23:00:55,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:55,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1287952968, now seen corresponding path program 1 times [2023-11-06 23:00:55,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:55,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057940754] [2023-11-06 23:00:55,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:55,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:56,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:56,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057940754] [2023-11-06 23:00:56,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057940754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:56,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:00:56,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:00:56,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106062871] [2023-11-06 23:00:56,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:56,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:00:56,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:56,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:00:56,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:00:56,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 140 [2023-11-06 23:00:56,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2023-11-06 23:00:56,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:00:56,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 140 [2023-11-06 23:00:56,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:00:56,141 INFO L124 PetriNetUnfolderBase]: 60/168 cut-off events. [2023-11-06 23:00:56,142 INFO L125 PetriNetUnfolderBase]: For 62/68 co-relation queries the response was YES. [2023-11-06 23:00:56,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 168 events. 60/168 cut-off events. For 62/68 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 674 event pairs, 19 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 380. Up to 94 conditions per place. [2023-11-06 23:00:56,147 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 18 selfloop transitions, 7 changer transitions 4/39 dead transitions. [2023-11-06 23:00:56,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 39 transitions, 188 flow [2023-11-06 23:00:56,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:00:56,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:00:56,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2023-11-06 23:00:56,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380952380952381 [2023-11-06 23:00:56,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 226 transitions. [2023-11-06 23:00:56,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 226 transitions. [2023-11-06 23:00:56,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:56,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 226 transitions. [2023-11-06 23:00:56,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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) [2023-11-06 23:00:56,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-11-06 23:00:56,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-11-06 23:00:56,165 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 100 flow. Second operand 3 states and 226 transitions. [2023-11-06 23:00:56,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 39 transitions, 188 flow [2023-11-06 23:00:56,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 39 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:00:56,171 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 142 flow [2023-11-06 23:00:56,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2023-11-06 23:00:56,175 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2023-11-06 23:00:56,175 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 142 flow [2023-11-06 23:00:56,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2023-11-06 23:00:56,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:00:56,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:00:56,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:00:56,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 23:00:56,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:56,183 INFO L85 PathProgramCache]: Analyzing trace with hash -212429894, now seen corresponding path program 1 times [2023-11-06 23:00:56,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:56,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974592794] [2023-11-06 23:00:56,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:56,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:56,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:56,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974592794] [2023-11-06 23:00:56,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974592794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:56,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:00:56,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:00:56,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262647251] [2023-11-06 23:00:56,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:56,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:00:56,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:56,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:00:56,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:00:56,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 140 [2023-11-06 23:00:56,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2023-11-06 23:00:56,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:00:56,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 140 [2023-11-06 23:00:56,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:00:56,468 INFO L124 PetriNetUnfolderBase]: 57/167 cut-off events. [2023-11-06 23:00:56,468 INFO L125 PetriNetUnfolderBase]: For 133/138 co-relation queries the response was YES. [2023-11-06 23:00:56,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 167 events. 57/167 cut-off events. For 133/138 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 685 event pairs, 22 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 458. Up to 114 conditions per place. [2023-11-06 23:00:56,470 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 16 selfloop transitions, 7 changer transitions 8/41 dead transitions. [2023-11-06 23:00:56,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 41 transitions, 244 flow [2023-11-06 23:00:56,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:00:56,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:00:56,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2023-11-06 23:00:56,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2023-11-06 23:00:56,472 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 216 transitions. [2023-11-06 23:00:56,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 216 transitions. [2023-11-06 23:00:56,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:56,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 216 transitions. [2023-11-06 23:00:56,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2023-11-06 23:00:56,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-11-06 23:00:56,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-11-06 23:00:56,476 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 142 flow. Second operand 3 states and 216 transitions. [2023-11-06 23:00:56,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 41 transitions, 244 flow [2023-11-06 23:00:56,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 41 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:00:56,485 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 151 flow [2023-11-06 23:00:56,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2023-11-06 23:00:56,486 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-11-06 23:00:56,486 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 151 flow [2023-11-06 23:00:56,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2023-11-06 23:00:56,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:00:56,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:00:56,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:00:56,487 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-06 23:00:56,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:56,488 INFO L85 PathProgramCache]: Analyzing trace with hash -568453286, now seen corresponding path program 1 times [2023-11-06 23:00:56,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:56,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570480014] [2023-11-06 23:00:56,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:56,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:56,516 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:56,551 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:56,551 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:00:56,552 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 7 remaining) [2023-11-06 23:00:56,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-06 23:00:56,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-06 23:00:56,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-06 23:00:56,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-06 23:00:56,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-06 23:00:56,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-06 23:00:56,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:00:56,556 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-06 23:00:56,564 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 23:00:56,564 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:00:56,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:00:56 BasicIcfg [2023-11-06 23:00:56,591 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:00:56,592 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:00:56,592 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:00:56,592 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:00:56,592 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:52" (3/4) ... [2023-11-06 23:00:56,594 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 23:00:56,595 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:00:56,596 INFO L158 Benchmark]: Toolchain (without parser) took 5029.15ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 117.2MB in the beginning and 133.9MB in the end (delta: -16.7MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2023-11-06 23:00:56,597 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 151.0MB. Free memory is still 125.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:00:56,597 INFO L158 Benchmark]: CACSL2BoogieTranslator took 673.66ms. Allocated memory is still 151.0MB. Free memory was 117.2MB in the beginning and 89.6MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-06 23:00:56,598 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.13ms. Allocated memory is still 151.0MB. Free memory was 89.6MB in the beginning and 87.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:00:56,598 INFO L158 Benchmark]: Boogie Preprocessor took 39.23ms. Allocated memory is still 151.0MB. Free memory was 87.1MB in the beginning and 85.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:00:56,599 INFO L158 Benchmark]: RCFGBuilder took 512.39ms. Allocated memory is still 151.0MB. Free memory was 85.8MB in the beginning and 72.8MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 23:00:56,600 INFO L158 Benchmark]: TraceAbstraction took 3738.34ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 72.5MB in the beginning and 135.0MB in the end (delta: -62.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:00:56,600 INFO L158 Benchmark]: Witness Printer took 3.98ms. Allocated memory is still 182.5MB. Free memory was 135.0MB in the beginning and 133.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:00:56,603 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 151.0MB. Free memory is still 125.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 673.66ms. Allocated memory is still 151.0MB. Free memory was 117.2MB in the beginning and 89.6MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.13ms. Allocated memory is still 151.0MB. Free memory was 89.6MB in the beginning and 87.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.23ms. Allocated memory is still 151.0MB. Free memory was 87.1MB in the beginning and 85.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 512.39ms. Allocated memory is still 151.0MB. Free memory was 85.8MB in the beginning and 72.8MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3738.34ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 72.5MB in the beginning and 135.0MB in the end (delta: -62.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.98ms. Allocated memory is still 182.5MB. Free memory was 135.0MB in the beginning and 133.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 76 PlacesBefore, 26 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1258 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 64 TotalNumberOfCompositions, 3579 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1743, independent: 1552, independent conditional: 0, independent unconditional: 1552, dependent: 191, dependent conditional: 0, dependent unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 712, independent: 667, independent conditional: 0, independent unconditional: 667, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1743, independent: 885, independent conditional: 0, independent unconditional: 885, dependent: 146, dependent conditional: 0, dependent unconditional: 146, unknown: 712, unknown conditional: 0, unknown unconditional: 712] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 946]: Data race detected Data race detected The following path leads to a data race: [L928] 0 int glob; [L929] 0 pthread_mutex_t m = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L937] 0 int i = __VERIFIER_nondet_int(); [L938] 0 pthread_t id; [L939] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, glob=0, i=0, id={2:0}, m={1:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L941] COND FALSE 0 !(\read(i)) [L944] 0 i++ VAL [arg={0:0}, arg={0:0}, glob=0, i++=0, i=1, id={2:0}, m={1:0}, pthread_mutex_lock(&m)=0, pthread_mutex_lock(&m)=25] [L932] 1 glob++ VAL [arg={0:0}, arg={0:0}, glob=0, m={1:0}] [L945] COND TRUE 0 \read(i) [L946] 0 glob++ VAL [arg={0:0}, arg={0:0}, glob=0, i=1, id={2:0}, m={1:0}, pthread_mutex_lock(&m)=25] [L932] 1 glob++ VAL [arg={0:0}, arg={0:0}, glob++=0, glob++=26, glob=1, m={1:0}] [L946] 0 glob++ VAL [arg={0:0}, arg={0:0}, glob++=0, glob++=26, glob=1, i=1, id={2:0}, m={1:0}, pthread_mutex_lock(&m)=25] Now there is a data race on ~glob~0 between C: glob++ [932] and C: glob++ [946] - UnprovableResult [Line: 946]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 939]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 932]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 932]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 93 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 93 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 158 IncrementalHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 17 mSDtfsCounter, 158 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151occurred in iteration=3, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-06 23:00:56,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df8ccedf-59af-44e4-af19-553e8691ab6c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE