./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --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_403d4f67-a487-46a6-832d-3fbf6eea7803/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403d4f67-a487-46a6-832d-3fbf6eea7803/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_403d4f67-a487-46a6-832d-3fbf6eea7803/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403d4f67-a487-46a6-832d-3fbf6eea7803/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403d4f67-a487-46a6-832d-3fbf6eea7803/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_403d4f67-a487-46a6-832d-3fbf6eea7803/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 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:12:02,404 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:12:02,473 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403d4f67-a487-46a6-832d-3fbf6eea7803/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:12:02,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:12:02,490 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:12:02,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:12:02,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:12:02,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:12:02,536 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:12:02,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:12:02,545 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:12:02,545 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:12:02,546 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:12:02,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:12:02,548 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:12:02,548 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:12:02,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:12:02,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:12:02,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:12:02,550 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:12:02,551 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:12:02,551 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:12:02,552 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:12:02,552 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:12:02,553 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:12:02,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:12:02,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:12:02,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:12:02,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:12:02,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:12:02,555 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:12:02,556 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:12:02,556 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:12:02,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:12:02,557 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:12:02,557 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:12:02,557 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:12:02,558 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:12:02,558 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:12:02,558 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_403d4f67-a487-46a6-832d-3fbf6eea7803/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403d4f67-a487-46a6-832d-3fbf6eea7803/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 [2023-11-06 22:12:02,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:12:02,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:12:02,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:12:02,908 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:12:02,909 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:12:02,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403d4f67-a487-46a6-832d-3fbf6eea7803/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2023-11-06 22:12:06,093 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:12:06,330 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:12:06,331 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403d4f67-a487-46a6-832d-3fbf6eea7803/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2023-11-06 22:12:06,341 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403d4f67-a487-46a6-832d-3fbf6eea7803/bin/uautomizer-verify-WvqO1wxjHP/data/db73815fb/fe4275475f1e41879ff911a380577318/FLAGc386f110d [2023-11-06 22:12:06,356 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403d4f67-a487-46a6-832d-3fbf6eea7803/bin/uautomizer-verify-WvqO1wxjHP/data/db73815fb/fe4275475f1e41879ff911a380577318 [2023-11-06 22:12:06,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:12:06,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:12:06,362 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:12:06,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:12:06,369 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:12:06,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:12:06" (1/1) ... [2023-11-06 22:12:06,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fffd12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:06, skipping insertion in model container [2023-11-06 22:12:06,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:12:06" (1/1) ... [2023-11-06 22:12:06,413 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:12:06,653 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_403d4f67-a487-46a6-832d-3fbf6eea7803/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2023-11-06 22:12:06,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:12:06,674 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:12:06,723 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_403d4f67-a487-46a6-832d-3fbf6eea7803/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2023-11-06 22:12:06,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:12:06,735 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:12:06,736 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:12:06,744 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:12:06,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:06 WrapperNode [2023-11-06 22:12:06,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:12:06,748 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:12:06,748 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:12:06,748 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:12:06,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:06" (1/1) ... [2023-11-06 22:12:06,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:06" (1/1) ... [2023-11-06 22:12:06,801 INFO L138 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 264 [2023-11-06 22:12:06,801 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:12:06,802 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:12:06,802 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:12:06,802 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:12:06,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:06" (1/1) ... [2023-11-06 22:12:06,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:06" (1/1) ... [2023-11-06 22:12:06,818 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:06" (1/1) ... [2023-11-06 22:12:06,818 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:06" (1/1) ... [2023-11-06 22:12:06,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:06" (1/1) ... [2023-11-06 22:12:06,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:06" (1/1) ... [2023-11-06 22:12:06,852 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:06" (1/1) ... [2023-11-06 22:12:06,854 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:06" (1/1) ... [2023-11-06 22:12:06,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:12:06,859 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:12:06,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:12:06,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:12:06,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:06" (1/1) ... [2023-11-06 22:12:06,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:12:06,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403d4f67-a487-46a6-832d-3fbf6eea7803/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:06,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403d4f67-a487-46a6-832d-3fbf6eea7803/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:12:06,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_403d4f67-a487-46a6-832d-3fbf6eea7803/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:12:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:12:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:12:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:12:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:12:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:12:06,955 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:12:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:12:06,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:12:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:12:06,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:12:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 22:12:06,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 22:12:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:12:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-06 22:12:06,957 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-06 22:12:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-06 22:12:06,957 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-06 22:12:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:12:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:12:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:12:06,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:12:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:12:06,960 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 22:12:07,113 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:12:07,115 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:12:07,564 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:12:07,643 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:12:07,643 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:12:07,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:12:07 BoogieIcfgContainer [2023-11-06 22:12:07,647 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:12:07,650 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:12:07,650 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:12:07,654 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:12:07,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:12:06" (1/3) ... [2023-11-06 22:12:07,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea9d725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:12:07, skipping insertion in model container [2023-11-06 22:12:07,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:06" (2/3) ... [2023-11-06 22:12:07,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea9d725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:12:07, skipping insertion in model container [2023-11-06 22:12:07,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:12:07" (3/3) ... [2023-11-06 22:12:07,658 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2023-11-06 22:12:07,668 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:12:07,680 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:12:07,681 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:12:07,681 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:12:07,884 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-06 22:12:07,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 243 transitions, 552 flow [2023-11-06 22:12:08,070 INFO L124 PetriNetUnfolderBase]: 8/215 cut-off events. [2023-11-06 22:12:08,071 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:12:08,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 215 events. 8/215 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 233 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 185. Up to 3 conditions per place. [2023-11-06 22:12:08,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 243 transitions, 552 flow [2023-11-06 22:12:08,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 206 transitions, 460 flow [2023-11-06 22:12:08,091 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:12:08,102 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 206 transitions, 460 flow [2023-11-06 22:12:08,105 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 206 transitions, 460 flow [2023-11-06 22:12:08,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 206 transitions, 460 flow [2023-11-06 22:12:08,181 INFO L124 PetriNetUnfolderBase]: 8/206 cut-off events. [2023-11-06 22:12:08,181 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:12:08,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 206 events. 8/206 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 232 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 185. Up to 3 conditions per place. [2023-11-06 22:12:08,191 INFO L119 LiptonReduction]: Number of co-enabled transitions 7736 [2023-11-06 22:12:13,486 INFO L134 LiptonReduction]: Checked pairs total: 49259 [2023-11-06 22:12:13,487 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-11-06 22:12:13,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:12:13,533 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;@6320464f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:12:13,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-06 22:12:13,552 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:12:13,552 INFO L124 PetriNetUnfolderBase]: 5/76 cut-off events. [2023-11-06 22:12:13,552 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:12:13,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:13,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:13,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-06 22:12:13,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:13,560 INFO L85 PathProgramCache]: Analyzing trace with hash -16211834, now seen corresponding path program 1 times [2023-11-06 22:12:13,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:13,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324263919] [2023-11-06 22:12:13,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:13,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:14,009 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 22:12:14,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:14,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324263919] [2023-11-06 22:12:14,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324263919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:14,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:14,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:12:14,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967511888] [2023-11-06 22:12:14,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:14,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:12:14,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:14,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:12:14,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:12:14,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 394 [2023-11-06 22:12:14,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 77 transitions, 202 flow. Second operand has 2 states, 2 states have (on average 232.5) internal successors, (465), 2 states have internal predecessors, (465), 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 22:12:14,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:14,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 394 [2023-11-06 22:12:14,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:15,983 INFO L124 PetriNetUnfolderBase]: 6951/11240 cut-off events. [2023-11-06 22:12:15,984 INFO L125 PetriNetUnfolderBase]: For 1714/1714 co-relation queries the response was YES. [2023-11-06 22:12:16,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22892 conditions, 11240 events. 6951/11240 cut-off events. For 1714/1714 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 77404 event pairs, 6399 based on Foata normal form. 68/9862 useless extension candidates. Maximal degree in co-relation 22444. Up to 9333 conditions per place. [2023-11-06 22:12:16,161 INFO L140 encePairwiseOnDemand]: 393/394 looper letters, 41 selfloop transitions, 0 changer transitions 1/76 dead transitions. [2023-11-06 22:12:16,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 76 transitions, 284 flow [2023-11-06 22:12:16,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:12:16,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:12:16,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 471 transitions. [2023-11-06 22:12:16,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5977157360406091 [2023-11-06 22:12:16,189 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 471 transitions. [2023-11-06 22:12:16,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 471 transitions. [2023-11-06 22:12:16,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:16,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 471 transitions. [2023-11-06 22:12:16,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 235.5) internal successors, (471), 2 states have internal predecessors, (471), 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 22:12:16,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 394.0) internal successors, (1182), 3 states have internal predecessors, (1182), 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 22:12:16,215 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 394.0) internal successors, (1182), 3 states have internal predecessors, (1182), 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 22:12:16,217 INFO L175 Difference]: Start difference. First operand has 91 places, 77 transitions, 202 flow. Second operand 2 states and 471 transitions. [2023-11-06 22:12:16,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 76 transitions, 284 flow [2023-11-06 22:12:16,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 76 transitions, 252 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-06 22:12:16,328 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 166 flow [2023-11-06 22:12:16,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=166, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2023-11-06 22:12:16,336 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -11 predicate places. [2023-11-06 22:12:16,337 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 166 flow [2023-11-06 22:12:16,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 232.5) internal successors, (465), 2 states have internal predecessors, (465), 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 22:12:16,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:16,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:16,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:12:16,340 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-06 22:12:16,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:16,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1103382458, now seen corresponding path program 1 times [2023-11-06 22:12:16,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:16,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79540688] [2023-11-06 22:12:16,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:16,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:17,843 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 22:12:17,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:17,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79540688] [2023-11-06 22:12:17,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79540688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:17,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:17,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-06 22:12:17,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295015787] [2023-11-06 22:12:17,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:17,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:12:17,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:17,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:12:17,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:12:18,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 394 [2023-11-06 22:12:18,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 166 flow. Second operand has 18 states, 18 states have (on average 185.72222222222223) internal successors, (3343), 18 states have internal predecessors, (3343), 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 22:12:18,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:18,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 394 [2023-11-06 22:12:18,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:33,809 INFO L124 PetriNetUnfolderBase]: 95345/130528 cut-off events. [2023-11-06 22:12:33,809 INFO L125 PetriNetUnfolderBase]: For 4154/4154 co-relation queries the response was YES. [2023-11-06 22:12:34,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256319 conditions, 130528 events. 95345/130528 cut-off events. For 4154/4154 co-relation queries the response was YES. Maximal size of possible extension queue 2930. Compared 844887 event pairs, 11224 based on Foata normal form. 1/125307 useless extension candidates. Maximal degree in co-relation 256316. Up to 85668 conditions per place. [2023-11-06 22:12:34,546 INFO L140 encePairwiseOnDemand]: 376/394 looper letters, 544 selfloop transitions, 160 changer transitions 23/749 dead transitions. [2023-11-06 22:12:34,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 749 transitions, 3131 flow [2023-11-06 22:12:34,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-06 22:12:34,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-06 22:12:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7499 transitions. [2023-11-06 22:12:34,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144052682123749 [2023-11-06 22:12:34,585 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 7499 transitions. [2023-11-06 22:12:34,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 7499 transitions. [2023-11-06 22:12:34,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:34,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 7499 transitions. [2023-11-06 22:12:34,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 202.67567567567568) internal successors, (7499), 37 states have internal predecessors, (7499), 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 22:12:34,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 394.0) internal successors, (14972), 38 states have internal predecessors, (14972), 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 22:12:34,673 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 394.0) internal successors, (14972), 38 states have internal predecessors, (14972), 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 22:12:34,673 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 166 flow. Second operand 37 states and 7499 transitions. [2023-11-06 22:12:34,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 749 transitions, 3131 flow [2023-11-06 22:12:34,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 749 transitions, 3131 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:12:34,695 INFO L231 Difference]: Finished difference. Result has 135 places, 234 transitions, 1004 flow [2023-11-06 22:12:34,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1004, PETRI_PLACES=135, PETRI_TRANSITIONS=234} [2023-11-06 22:12:34,697 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 44 predicate places. [2023-11-06 22:12:34,697 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 234 transitions, 1004 flow [2023-11-06 22:12:34,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 185.72222222222223) internal successors, (3343), 18 states have internal predecessors, (3343), 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 22:12:34,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:34,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:34,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:12:34,700 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-06 22:12:34,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:34,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1435724614, now seen corresponding path program 2 times [2023-11-06 22:12:34,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:34,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231897853] [2023-11-06 22:12:34,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:34,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:35,794 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 22:12:35,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:35,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231897853] [2023-11-06 22:12:35,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231897853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:35,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:35,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-06 22:12:35,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105356368] [2023-11-06 22:12:35,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:35,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:12:35,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:35,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:12:35,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:12:36,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 394 [2023-11-06 22:12:36,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 234 transitions, 1004 flow. Second operand has 15 states, 15 states have (on average 186.26666666666668) internal successors, (2794), 15 states have internal predecessors, (2794), 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 22:12:36,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:36,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 394 [2023-11-06 22:12:36,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:00,433 INFO L124 PetriNetUnfolderBase]: 133101/180085 cut-off events. [2023-11-06 22:13:00,433 INFO L125 PetriNetUnfolderBase]: For 214543/214543 co-relation queries the response was YES. [2023-11-06 22:13:01,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500796 conditions, 180085 events. 133101/180085 cut-off events. For 214543/214543 co-relation queries the response was YES. Maximal size of possible extension queue 3870. Compared 1187829 event pairs, 24940 based on Foata normal form. 1/172984 useless extension candidates. Maximal degree in co-relation 500772. Up to 127103 conditions per place. [2023-11-06 22:13:02,303 INFO L140 encePairwiseOnDemand]: 376/394 looper letters, 658 selfloop transitions, 219 changer transitions 1/900 dead transitions. [2023-11-06 22:13:02,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 900 transitions, 5069 flow [2023-11-06 22:13:02,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-06 22:13:02,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-06 22:13:02,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 8928 transitions. [2023-11-06 22:13:02,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035532994923858 [2023-11-06 22:13:02,331 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 8928 transitions. [2023-11-06 22:13:02,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 8928 transitions. [2023-11-06 22:13:02,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:02,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 8928 transitions. [2023-11-06 22:13:02,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 198.4) internal successors, (8928), 45 states have internal predecessors, (8928), 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 22:13:02,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 394.0) internal successors, (18124), 46 states have internal predecessors, (18124), 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 22:13:02,400 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 394.0) internal successors, (18124), 46 states have internal predecessors, (18124), 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 22:13:02,400 INFO L175 Difference]: Start difference. First operand has 135 places, 234 transitions, 1004 flow. Second operand 45 states and 8928 transitions. [2023-11-06 22:13:02,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 900 transitions, 5069 flow [2023-11-06 22:13:08,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 900 transitions, 5069 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:13:08,221 INFO L231 Difference]: Finished difference. Result has 197 places, 459 transitions, 2886 flow [2023-11-06 22:13:08,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=2886, PETRI_PLACES=197, PETRI_TRANSITIONS=459} [2023-11-06 22:13:08,223 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 106 predicate places. [2023-11-06 22:13:08,223 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 459 transitions, 2886 flow [2023-11-06 22:13:08,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 186.26666666666668) internal successors, (2794), 15 states have internal predecessors, (2794), 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 22:13:08,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:08,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:08,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:13:08,226 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-06 22:13:08,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:08,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1250580286, now seen corresponding path program 3 times [2023-11-06 22:13:08,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:08,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546184402] [2023-11-06 22:13:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:08,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:09,330 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 22:13:09,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:09,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546184402] [2023-11-06 22:13:09,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546184402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:09,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:09,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-06 22:13:09,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742113862] [2023-11-06 22:13:09,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:09,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:13:09,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:09,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:13:09,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:13:10,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 394 [2023-11-06 22:13:10,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 459 transitions, 2886 flow. Second operand has 19 states, 19 states have (on average 185.57894736842104) internal successors, (3526), 19 states have internal predecessors, (3526), 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 22:13:10,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:10,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 394 [2023-11-06 22:13:10,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand