./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/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_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:53:55,350 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:53:55,423 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:53:55,428 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:53:55,429 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:53:55,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:53:55,471 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:53:55,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:53:55,473 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:53:55,478 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:53:55,479 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:53:55,480 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:53:55,480 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:53:55,482 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:53:55,482 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:53:55,483 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:53:55,483 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:53:55,484 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:53:55,484 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:53:55,485 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:53:55,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:53:55,486 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:53:55,486 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:53:55,486 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:53:55,487 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:53:55,488 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:53:55,488 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:53:55,489 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:53:55,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:55,490 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:53:55,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:53:55,491 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:53:55,491 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:53:55,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:53:55,492 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:53:55,492 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:53:55,492 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:53:55,493 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:53:55,493 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:53:55,493 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_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d [2023-11-06 21:53:55,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:53:55,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:53:55,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:53:55,868 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:53:55,869 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:53:55,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2023-11-06 21:53:58,994 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:53:59,303 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:53:59,304 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2023-11-06 21:53:59,329 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/bin/uautomizer-verify-WvqO1wxjHP/data/7a74da06b/e3c92e1dad424a4aacaabfe53efffeff/FLAG22bc8b605 [2023-11-06 21:53:59,344 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/bin/uautomizer-verify-WvqO1wxjHP/data/7a74da06b/e3c92e1dad424a4aacaabfe53efffeff [2023-11-06 21:53:59,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:53:59,349 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:53:59,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:59,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:53:59,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:53:59,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:59" (1/1) ... [2023-11-06 21:53:59,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@371c2690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:59, skipping insertion in model container [2023-11-06 21:53:59,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:59" (1/1) ... [2023-11-06 21:53:59,441 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:54:00,051 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2023-11-06 21:54:00,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:54:00,104 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:54:00,161 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2023-11-06 21:54:00,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:54:00,247 WARN L672 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:54:00,255 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:54:00,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00 WrapperNode [2023-11-06 21:54:00,255 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:54:00,257 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:54:00,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:54:00,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:54:00,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,301 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,343 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 149 [2023-11-06 21:54:00,344 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:54:00,344 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:54:00,345 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:54:00,345 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:54:00,355 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,360 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,368 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,373 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,375 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,377 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,381 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:54:00,383 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:54:00,383 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:54:00,383 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:54:00,384 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:54:00,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:00,439 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:54:00,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:54:00,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:54:00,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:54:00,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:54:00,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:54:00,473 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 21:54:00,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:54:00,473 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 21:54:00,473 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 21:54:00,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:54:00,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:54:00,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:54:00,476 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 21:54:00,619 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:54:00,621 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:54:00,859 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:54:00,868 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:54:00,869 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-06 21:54:00,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:00 BoogieIcfgContainer [2023-11-06 21:54:00,872 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:54:00,874 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:54:00,874 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:54:00,878 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:54:00,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:53:59" (1/3) ... [2023-11-06 21:54:00,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710d30d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:54:00, skipping insertion in model container [2023-11-06 21:54:00,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (2/3) ... [2023-11-06 21:54:00,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710d30d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:54:00, skipping insertion in model container [2023-11-06 21:54:00,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:00" (3/3) ... [2023-11-06 21:54:00,882 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2023-11-06 21:54:00,891 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:54:00,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:54:00,903 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:54:00,903 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:54:01,009 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 21:54:01,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 150 transitions, 307 flow [2023-11-06 21:54:01,143 INFO L124 PetriNetUnfolderBase]: 24/192 cut-off events. [2023-11-06 21:54:01,144 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 21:54:01,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 192 events. 24/192 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 543 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-11-06 21:54:01,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 150 transitions, 307 flow [2023-11-06 21:54:01,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 145 transitions, 294 flow [2023-11-06 21:54:01,164 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:54:01,176 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 145 transitions, 294 flow [2023-11-06 21:54:01,179 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 145 transitions, 294 flow [2023-11-06 21:54:01,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 145 transitions, 294 flow [2023-11-06 21:54:01,239 INFO L124 PetriNetUnfolderBase]: 23/187 cut-off events. [2023-11-06 21:54:01,239 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:54:01,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 187 events. 23/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 525 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-11-06 21:54:01,247 INFO L119 LiptonReduction]: Number of co-enabled transitions 6048 [2023-11-06 21:54:05,624 INFO L134 LiptonReduction]: Checked pairs total: 11368 [2023-11-06 21:54:05,624 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-11-06 21:54:05,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:54:05,648 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;@51569ee3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:54:05,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 21:54:05,679 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:54:05,681 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-06 21:54:05,682 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:54:05,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:05,683 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 21:54:05,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 21:54:05,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:05,688 INFO L85 PathProgramCache]: Analyzing trace with hash 161885836, now seen corresponding path program 1 times [2023-11-06 21:54:05,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:05,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900348542] [2023-11-06 21:54:05,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:05,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:54:05,842 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:54:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:54:05,943 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:54:05,945 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 21:54:05,947 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-11-06 21:54:05,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-06 21:54:05,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:54:05,950 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-06 21:54:05,954 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 21:54:05,954 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 21:54:06,006 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 21:54:06,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 215 transitions, 446 flow [2023-11-06 21:54:06,079 INFO L124 PetriNetUnfolderBase]: 45/325 cut-off events. [2023-11-06 21:54:06,079 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 21:54:06,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 325 events. 45/325 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1164 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 194. Up to 8 conditions per place. [2023-11-06 21:54:06,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 215 transitions, 446 flow [2023-11-06 21:54:06,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 215 transitions, 446 flow [2023-11-06 21:54:06,090 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:54:06,090 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 187 places, 215 transitions, 446 flow [2023-11-06 21:54:06,091 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 187 places, 215 transitions, 446 flow [2023-11-06 21:54:06,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 215 transitions, 446 flow [2023-11-06 21:54:06,149 INFO L124 PetriNetUnfolderBase]: 45/325 cut-off events. [2023-11-06 21:54:06,149 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 21:54:06,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 325 events. 45/325 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1164 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 194. Up to 8 conditions per place. [2023-11-06 21:54:06,173 INFO L119 LiptonReduction]: Number of co-enabled transitions 21420 [2023-11-06 21:54:10,638 INFO L134 LiptonReduction]: Checked pairs total: 56288 [2023-11-06 21:54:10,638 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-11-06 21:54:10,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:54:10,643 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;@51569ee3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:54:10,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 21:54:10,647 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:54:10,648 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2023-11-06 21:54:10,648 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 21:54:10,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:10,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:10,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 21:54:10,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:10,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1247747909, now seen corresponding path program 1 times [2023-11-06 21:54:10,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:10,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046347235] [2023-11-06 21:54:10,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:10,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:10,785 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 21:54:10,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:10,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046347235] [2023-11-06 21:54:10,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046347235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:10,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:10,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:54:10,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015688460] [2023-11-06 21:54:10,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:10,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:10,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:10,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:10,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:10,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 364 [2023-11-06 21:54:10,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 100 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 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 21:54:10,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:10,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 364 [2023-11-06 21:54:10,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:12,785 INFO L124 PetriNetUnfolderBase]: 8206/13668 cut-off events. [2023-11-06 21:54:12,785 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2023-11-06 21:54:12,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26405 conditions, 13668 events. 8206/13668 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 98421 event pairs, 3621 based on Foata normal form. 1612/13527 useless extension candidates. Maximal degree in co-relation 1751. Up to 12614 conditions per place. [2023-11-06 21:54:12,919 INFO L140 encePairwiseOnDemand]: 334/364 looper letters, 65 selfloop transitions, 2 changer transitions 9/93 dead transitions. [2023-11-06 21:54:12,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 93 transitions, 352 flow [2023-11-06 21:54:12,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:12,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:54:12,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2023-11-06 21:54:12,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5860805860805861 [2023-11-06 21:54:12,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2023-11-06 21:54:12,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2023-11-06 21:54:12,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:12,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2023-11-06 21:54:12,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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 21:54:12,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 21:54:12,961 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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 21:54:12,963 INFO L175 Difference]: Start difference. First operand has 74 places, 100 transitions, 216 flow. Second operand 3 states and 640 transitions. [2023-11-06 21:54:12,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 93 transitions, 352 flow [2023-11-06 21:54:12,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 93 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:54:12,974 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 148 flow [2023-11-06 21:54:12,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2023-11-06 21:54:12,980 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 2 predicate places. [2023-11-06 21:54:12,980 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 148 flow [2023-11-06 21:54:12,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 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 21:54:12,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:12,982 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 21:54:12,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:54:12,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 21:54:12,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:12,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1787072220, now seen corresponding path program 1 times [2023-11-06 21:54:12,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:12,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727389557] [2023-11-06 21:54:12,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:12,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:54:13,013 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:54:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:54:13,041 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:54:13,041 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 21:54:13,041 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-11-06 21:54:13,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-06 21:54:13,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:54:13,042 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 21:54:13,043 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 21:54:13,044 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 21:54:13,083 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 21:54:13,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 280 transitions, 587 flow [2023-11-06 21:54:13,181 INFO L124 PetriNetUnfolderBase]: 71/493 cut-off events. [2023-11-06 21:54:13,181 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 21:54:13,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 493 events. 71/493 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1969 event pairs, 1 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 333. Up to 16 conditions per place. [2023-11-06 21:54:13,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 240 places, 280 transitions, 587 flow [2023-11-06 21:54:13,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 240 places, 280 transitions, 587 flow [2023-11-06 21:54:13,199 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:54:13,199 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 240 places, 280 transitions, 587 flow [2023-11-06 21:54:13,200 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 240 places, 280 transitions, 587 flow [2023-11-06 21:54:13,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 280 transitions, 587 flow [2023-11-06 21:54:13,292 INFO L124 PetriNetUnfolderBase]: 71/493 cut-off events. [2023-11-06 21:54:13,292 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 21:54:13,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 493 events. 71/493 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1969 event pairs, 1 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 333. Up to 16 conditions per place. [2023-11-06 21:54:13,336 INFO L119 LiptonReduction]: Number of co-enabled transitions 44604 [2023-11-06 21:54:18,330 INFO L134 LiptonReduction]: Checked pairs total: 125539 [2023-11-06 21:54:18,330 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-11-06 21:54:18,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:54:18,335 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;@51569ee3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:54:18,335 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 21:54:18,339 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:54:18,339 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2023-11-06 21:54:18,340 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 21:54:18,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:18,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:18,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 21:54:18,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:18,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1127187434, now seen corresponding path program 1 times [2023-11-06 21:54:18,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:18,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494034453] [2023-11-06 21:54:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:18,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:18,430 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 21:54:18,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:18,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494034453] [2023-11-06 21:54:18,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494034453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:18,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:18,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:54:18,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841351650] [2023-11-06 21:54:18,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:18,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:18,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:18,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:18,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:18,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 467 [2023-11-06 21:54:18,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 137 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 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 21:54:18,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:18,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 467 [2023-11-06 21:54:18,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:44,736 INFO L124 PetriNetUnfolderBase]: 184540/274802 cut-off events. [2023-11-06 21:54:44,736 INFO L125 PetriNetUnfolderBase]: For 3619/3619 co-relation queries the response was YES. [2023-11-06 21:54:45,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526940 conditions, 274802 events. 184540/274802 cut-off events. For 3619/3619 co-relation queries the response was YES. Maximal size of possible extension queue 7198. Compared 2431129 event pairs, 112506 based on Foata normal form. 33466/277376 useless extension candidates. Maximal degree in co-relation 23915. Up to 249862 conditions per place. [2023-11-06 21:54:46,420 INFO L140 encePairwiseOnDemand]: 426/467 looper letters, 79 selfloop transitions, 2 changer transitions 10/119 dead transitions. [2023-11-06 21:54:46,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 119 transitions, 445 flow [2023-11-06 21:54:46,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:54:46,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 819 transitions. [2023-11-06 21:54:46,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5845824411134903 [2023-11-06 21:54:46,429 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 819 transitions. [2023-11-06 21:54:46,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 819 transitions. [2023-11-06 21:54:46,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:46,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 819 transitions. [2023-11-06 21:54:46,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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 21:54:46,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 21:54:46,443 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 21:54:46,443 INFO L175 Difference]: Start difference. First operand has 100 places, 137 transitions, 301 flow. Second operand 3 states and 819 transitions. [2023-11-06 21:54:46,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 119 transitions, 445 flow [2023-11-06 21:54:46,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 119 transitions, 445 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:54:46,454 INFO L231 Difference]: Finished difference. Result has 103 places, 90 transitions, 208 flow [2023-11-06 21:54:46,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=103, PETRI_TRANSITIONS=90} [2023-11-06 21:54:46,457 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 3 predicate places. [2023-11-06 21:54:46,457 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 90 transitions, 208 flow [2023-11-06 21:54:46,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 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 21:54:46,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:46,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:46,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:54:46,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 21:54:46,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:46,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1551566693, now seen corresponding path program 1 times [2023-11-06 21:54:46,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:46,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071976616] [2023-11-06 21:54:46,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:46,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:46,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:46,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:46,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071976616] [2023-11-06 21:54:46,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071976616] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:46,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150118819] [2023-11-06 21:54:46,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:46,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:46,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:46,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:46,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:54:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:46,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:54:46,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:46,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:46,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:54:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:46,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150118819] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:54:46,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:54:46,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-06 21:54:46,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438775808] [2023-11-06 21:54:46,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:54:46,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:54:46,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:46,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:54:46,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:54:46,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 467 [2023-11-06 21:54:46,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 90 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 227.16666666666666) internal successors, (1363), 6 states have internal predecessors, (1363), 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 21:54:46,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:46,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 467 [2023-11-06 21:54:46,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:52,770 INFO L124 PetriNetUnfolderBase]: 41059/64847 cut-off events. [2023-11-06 21:54:52,770 INFO L125 PetriNetUnfolderBase]: For 20844/20844 co-relation queries the response was YES. [2023-11-06 21:54:52,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128094 conditions, 64847 events. 41059/64847 cut-off events. For 20844/20844 co-relation queries the response was YES. Maximal size of possible extension queue 1990. Compared 546266 event pairs, 0 based on Foata normal form. 5220/67360 useless extension candidates. Maximal degree in co-relation 8847. Up to 39168 conditions per place. [2023-11-06 21:54:53,228 INFO L140 encePairwiseOnDemand]: 464/467 looper letters, 162 selfloop transitions, 4 changer transitions 0/192 dead transitions. [2023-11-06 21:54:53,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 192 transitions, 744 flow [2023-11-06 21:54:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:54:53,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:54:53,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1519 transitions. [2023-11-06 21:54:53,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5421127765881513 [2023-11-06 21:54:53,243 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1519 transitions. [2023-11-06 21:54:53,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1519 transitions. [2023-11-06 21:54:53,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:53,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1519 transitions. [2023-11-06 21:54:53,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 253.16666666666666) internal successors, (1519), 6 states have internal predecessors, (1519), 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 21:54:53,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 467.0) internal successors, (3269), 7 states have internal predecessors, (3269), 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 21:54:53,263 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 467.0) internal successors, (3269), 7 states have internal predecessors, (3269), 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 21:54:53,263 INFO L175 Difference]: Start difference. First operand has 103 places, 90 transitions, 208 flow. Second operand 6 states and 1519 transitions. [2023-11-06 21:54:53,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 192 transitions, 744 flow [2023-11-06 21:54:53,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 192 transitions, 740 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 21:54:53,283 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 202 flow [2023-11-06 21:54:53,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2023-11-06 21:54:53,286 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -6 predicate places. [2023-11-06 21:54:53,286 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 202 flow [2023-11-06 21:54:53,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 227.16666666666666) internal successors, (1363), 6 states have internal predecessors, (1363), 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 21:54:53,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:53,288 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-06 21:54:53,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 21:54:53,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c552edbe-23f7-4c4f-a6d6-1681a8454e6f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:53,494 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 21:54:53,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:53,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1234392651, now seen corresponding path program 1 times [2023-11-06 21:54:53,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:53,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428126733] [2023-11-06 21:54:53,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:53,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:54:53,550 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:54:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:54:53,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:54:53,599 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 21:54:53,599 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-11-06 21:54:53,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-06 21:54:53,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:54:53,601 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-06 21:54:53,602 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 21:54:53,602 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-06 21:54:53,673 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 21:54:53,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 345 transitions, 730 flow [2023-11-06 21:54:53,887 INFO L124 PetriNetUnfolderBase]: 109/733 cut-off events. [2023-11-06 21:54:53,888 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 21:54:53,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 733 events. 109/733 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3180 event pairs, 6 based on Foata normal form. 0/619 useless extension candidates. Maximal degree in co-relation 513. Up to 32 conditions per place. [2023-11-06 21:54:53,906 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 345 transitions, 730 flow [2023-11-06 21:54:53,916 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 345 transitions, 730 flow [2023-11-06 21:54:53,916 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:54:53,916 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 345 transitions, 730 flow [2023-11-06 21:54:53,917 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 345 transitions, 730 flow [2023-11-06 21:54:53,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 345 transitions, 730 flow [2023-11-06 21:54:54,067 INFO L124 PetriNetUnfolderBase]: 109/733 cut-off events. [2023-11-06 21:54:54,068 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 21:54:54,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 733 events. 109/733 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3180 event pairs, 6 based on Foata normal form. 0/619 useless extension candidates. Maximal degree in co-relation 513. Up to 32 conditions per place. [2023-11-06 21:54:54,130 INFO L119 LiptonReduction]: Number of co-enabled transitions 76104 [2023-11-06 21:54:59,394 INFO L134 LiptonReduction]: Checked pairs total: 246724 [2023-11-06 21:54:59,394 INFO L136 LiptonReduction]: Total number of compositions: 226 [2023-11-06 21:54:59,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:54:59,398 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;@51569ee3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:54:59,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 21:54:59,402 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:54:59,402 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2023-11-06 21:54:59,402 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 21:54:59,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:59,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:59,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 21:54:59,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:59,403 INFO L85 PathProgramCache]: Analyzing trace with hash 36729113, now seen corresponding path program 1 times [2023-11-06 21:54:59,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:59,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396288782] [2023-11-06 21:54:59,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:59,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:59,440 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 21:54:59,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:59,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396288782] [2023-11-06 21:54:59,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396288782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:59,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:59,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:54:59,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207277662] [2023-11-06 21:54:59,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:59,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:59,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:59,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:59,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:59,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 571 [2023-11-06 21:54:59,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 176 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 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 21:54:59,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:59,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 571 [2023-11-06 21:54:59,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand