./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:09:41,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:09:41,413 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:09:41,418 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:09:41,418 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:09:41,444 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:09:41,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:09:41,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:09:41,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:09:41,447 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:09:41,447 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:09:41,448 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:09:41,449 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:09:41,450 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:09:41,450 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:09:41,451 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:09:41,451 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:09:41,452 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:09:41,452 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:09:41,453 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:09:41,453 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:09:41,454 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:09:41,454 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:09:41,455 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:09:41,455 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:09:41,456 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:09:41,456 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:09:41,456 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:09:41,457 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:09:41,457 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:09:41,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:09:41,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:09:41,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:09:41,459 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:09:41,459 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:09:41,459 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:09:41,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:09:41,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:09:41,460 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:09:41,460 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:09:41,460 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:09:41,461 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:09:41,461 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_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 [2023-11-29 06:09:41,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:09:41,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:09:41,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:09:41,762 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:09:41,763 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:09:41,764 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2023-11-29 06:09:45,073 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:09:45,275 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:09:45,276 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2023-11-29 06:09:45,283 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/data/2aea5e19f/507b5514b58144babf96eb2ff81a11cc/FLAGb5de7ae3d [2023-11-29 06:09:45,298 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/data/2aea5e19f/507b5514b58144babf96eb2ff81a11cc [2023-11-29 06:09:45,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:09:45,302 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:09:45,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:09:45,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:09:45,310 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:09:45,311 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:09:45" (1/1) ... [2023-11-29 06:09:45,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eeff854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:45, skipping insertion in model container [2023-11-29 06:09:45,312 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:09:45" (1/1) ... [2023-11-29 06:09:45,347 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:09:45,560 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_452bc496-c3bd-4188-a6c9-b332a7056e2d/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3096,3109] [2023-11-29 06:09:45,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:09:45,583 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:09:45,613 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_452bc496-c3bd-4188-a6c9-b332a7056e2d/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3096,3109] [2023-11-29 06:09:45,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:09:45,627 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:09:45,628 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:09:45,637 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:09:45,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:45 WrapperNode [2023-11-29 06:09:45,638 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:09:45,639 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:09:45,640 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:09:45,640 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:09:45,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:45" (1/1) ... [2023-11-29 06:09:45,661 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:45" (1/1) ... [2023-11-29 06:09:45,691 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 129 [2023-11-29 06:09:45,692 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:09:45,693 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:09:45,693 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:09:45,693 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:09:45,707 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:45" (1/1) ... [2023-11-29 06:09:45,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:45" (1/1) ... [2023-11-29 06:09:45,712 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:45" (1/1) ... [2023-11-29 06:09:45,727 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 2, 8, 2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-29 06:09:45,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:45" (1/1) ... [2023-11-29 06:09:45,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:45" (1/1) ... [2023-11-29 06:09:45,736 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:45" (1/1) ... [2023-11-29 06:09:45,739 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:45" (1/1) ... [2023-11-29 06:09:45,742 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:45" (1/1) ... [2023-11-29 06:09:45,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:45" (1/1) ... [2023-11-29 06:09:45,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:09:45,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:09:45,748 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:09:45,748 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:09:45,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:45" (1/1) ... [2023-11-29 06:09:45,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:09:45,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:09:45,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:09:45,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:09:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:09:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:09:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:09:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:09:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 06:09:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 06:09:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 06:09:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 06:09:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 06:09:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 06:09:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 06:09:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 06:09:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 06:09:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 06:09:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 06:09:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 06:09:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 06:09:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 06:09:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:09:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:09:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:09:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 06:09:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 06:09:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 06:09:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 06:09:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 06:09:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:09:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:09:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:09:45,837 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 06:09:45,977 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:09:45,980 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:09:46,315 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:09:46,622 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:09:46,622 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 06:09:46,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:09:46 BoogieIcfgContainer [2023-11-29 06:09:46,623 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:09:46,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:09:46,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:09:46,630 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:09:46,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:09:45" (1/3) ... [2023-11-29 06:09:46,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194a3c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:09:46, skipping insertion in model container [2023-11-29 06:09:46,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:45" (2/3) ... [2023-11-29 06:09:46,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194a3c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:09:46, skipping insertion in model container [2023-11-29 06:09:46,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:09:46" (3/3) ... [2023-11-29 06:09:46,634 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2023-11-29 06:09:46,645 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 06:09:46,657 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:09:46,658 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:09:46,658 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 06:09:46,720 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 06:09:46,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 39 transitions, 99 flow [2023-11-29 06:09:46,797 INFO L124 PetriNetUnfolderBase]: 3/36 cut-off events. [2023-11-29 06:09:46,798 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 06:09:46,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 3/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-11-29 06:09:46,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 39 transitions, 99 flow [2023-11-29 06:09:46,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 35 transitions, 88 flow [2023-11-29 06:09:46,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:09:46,825 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1ed48ef7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:09:46,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 06:09:46,842 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:09:46,842 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2023-11-29 06:09:46,843 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 06:09:46,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:09:46,844 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] [2023-11-29 06:09:46,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 06:09:46,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:09:46,851 INFO L85 PathProgramCache]: Analyzing trace with hash -842274422, now seen corresponding path program 1 times [2023-11-29 06:09:46,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:09:46,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890820849] [2023-11-29 06:09:46,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:09:46,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:09:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:09:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:09:47,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:09:47,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890820849] [2023-11-29 06:09:47,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890820849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:09:47,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:09:47,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:09:47,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786146685] [2023-11-29 06:09:47,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:09:47,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:09:47,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:09:47,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:09:47,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:09:47,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2023-11-29 06:09:47,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-29 06:09:47,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:09:47,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2023-11-29 06:09:47,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:09:47,674 INFO L124 PetriNetUnfolderBase]: 518/881 cut-off events. [2023-11-29 06:09:47,674 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-29 06:09:47,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1758 conditions, 881 events. 518/881 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4552 event pairs, 276 based on Foata normal form. 34/860 useless extension candidates. Maximal degree in co-relation 1565. Up to 561 conditions per place. [2023-11-29 06:09:47,690 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 34 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-11-29 06:09:47,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 192 flow [2023-11-29 06:09:47,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:09:47,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:09:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2023-11-29 06:09:47,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2023-11-29 06:09:47,706 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 90 transitions. [2023-11-29 06:09:47,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 90 transitions. [2023-11-29 06:09:47,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:09:47,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 90 transitions. [2023-11-29 06:09:47,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2023-11-29 06:09:47,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 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) [2023-11-29 06:09:47,719 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 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) [2023-11-29 06:09:47,721 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 88 flow. Second operand 4 states and 90 transitions. [2023-11-29 06:09:47,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 192 flow [2023-11-29 06:09:47,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 176 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 06:09:47,732 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 90 flow [2023-11-29 06:09:47,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2023-11-29 06:09:47,739 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2023-11-29 06:09:47,739 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 90 flow [2023-11-29 06:09:47,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-29 06:09:47,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:09:47,740 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] [2023-11-29 06:09:47,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:09:47,740 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 06:09:47,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:09:47,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1426310397, now seen corresponding path program 1 times [2023-11-29 06:09:47,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:09:47,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091344926] [2023-11-29 06:09:47,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:09:47,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:09:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:09:47,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:09:47,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:09:47,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091344926] [2023-11-29 06:09:47,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091344926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:09:47,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:09:47,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:09:47,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983437943] [2023-11-29 06:09:47,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:09:47,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:09:47,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:09:47,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:09:47,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:09:47,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2023-11-29 06:09:47,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2023-11-29 06:09:47,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:09:47,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2023-11-29 06:09:47,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:09:48,161 INFO L124 PetriNetUnfolderBase]: 558/968 cut-off events. [2023-11-29 06:09:48,161 INFO L125 PetriNetUnfolderBase]: For 84/115 co-relation queries the response was YES. [2023-11-29 06:09:48,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2067 conditions, 968 events. 558/968 cut-off events. For 84/115 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4927 event pairs, 337 based on Foata normal form. 69/988 useless extension candidates. Maximal degree in co-relation 580. Up to 632 conditions per place. [2023-11-29 06:09:48,174 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 36 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-11-29 06:09:48,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 203 flow [2023-11-29 06:09:48,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:09:48,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:09:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2023-11-29 06:09:48,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2023-11-29 06:09:48,177 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 90 transitions. [2023-11-29 06:09:48,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 90 transitions. [2023-11-29 06:09:48,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:09:48,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 90 transitions. [2023-11-29 06:09:48,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2023-11-29 06:09:48,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 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) [2023-11-29 06:09:48,180 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 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) [2023-11-29 06:09:48,180 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 90 flow. Second operand 4 states and 90 transitions. [2023-11-29 06:09:48,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 203 flow [2023-11-29 06:09:48,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:09:48,183 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2023-11-29 06:09:48,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-11-29 06:09:48,185 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-11-29 06:09:48,185 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2023-11-29 06:09:48,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2023-11-29 06:09:48,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:09:48,186 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] [2023-11-29 06:09:48,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:09:48,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 06:09:48,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:09:48,187 INFO L85 PathProgramCache]: Analyzing trace with hash 552744456, now seen corresponding path program 1 times [2023-11-29 06:09:48,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:09:48,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158146850] [2023-11-29 06:09:48,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:09:48,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:09:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:09:48,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:09:48,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:09:48,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158146850] [2023-11-29 06:09:48,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158146850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:09:48,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:09:48,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:09:48,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348413014] [2023-11-29 06:09:48,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:09:48,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:09:48,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:09:48,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:09:48,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:09:48,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-29 06:09:48,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2023-11-29 06:09:48,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:09:48,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-29 06:09:48,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:09:48,546 INFO L124 PetriNetUnfolderBase]: 484/836 cut-off events. [2023-11-29 06:09:48,546 INFO L125 PetriNetUnfolderBase]: For 125/189 co-relation queries the response was YES. [2023-11-29 06:09:48,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1906 conditions, 836 events. 484/836 cut-off events. For 125/189 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4223 event pairs, 405 based on Foata normal form. 64/857 useless extension candidates. Maximal degree in co-relation 563. Up to 745 conditions per place. [2023-11-29 06:09:48,567 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 25 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-11-29 06:09:48,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 156 flow [2023-11-29 06:09:48,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:09:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:09:48,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2023-11-29 06:09:48,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2023-11-29 06:09:48,570 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 68 transitions. [2023-11-29 06:09:48,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 68 transitions. [2023-11-29 06:09:48,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:09:48,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 68 transitions. [2023-11-29 06:09:48,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2023-11-29 06:09:48,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2023-11-29 06:09:48,572 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2023-11-29 06:09:48,572 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 3 states and 68 transitions. [2023-11-29 06:09:48,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 156 flow [2023-11-29 06:09:48,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:09:48,575 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 108 flow [2023-11-29 06:09:48,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-11-29 06:09:48,576 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-11-29 06:09:48,576 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 108 flow [2023-11-29 06:09:48,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2023-11-29 06:09:48,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:09:48,577 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] [2023-11-29 06:09:48,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:09:48,577 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 06:09:48,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:09:48,578 INFO L85 PathProgramCache]: Analyzing trace with hash 879332773, now seen corresponding path program 1 times [2023-11-29 06:09:48,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:09:48,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081544342] [2023-11-29 06:09:48,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:09:48,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:09:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:09:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:09:49,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:09:49,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081544342] [2023-11-29 06:09:49,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081544342] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:09:49,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166631453] [2023-11-29 06:09:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:09:49,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:09:49,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:09:49,242 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:09:49,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:09:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:09:49,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 06:09:49,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:09:49,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:09:49,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 06:09:49,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:09:49,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:09:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:09:50,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166631453] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:09:50,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:09:50,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 8] total 20 [2023-11-29 06:09:50,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344782987] [2023-11-29 06:09:50,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:09:50,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 06:09:50,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:09:50,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 06:09:50,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:09:50,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2023-11-29 06:09:50,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 108 flow. Second operand has 20 states, 20 states have (on average 13.05) internal successors, (261), 20 states have internal predecessors, (261), 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) [2023-11-29 06:09:50,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:09:50,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2023-11-29 06:09:50,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:09:51,600 INFO L124 PetriNetUnfolderBase]: 1812/2953 cut-off events. [2023-11-29 06:09:51,600 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2023-11-29 06:09:51,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6593 conditions, 2953 events. 1812/2953 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15683 event pairs, 174 based on Foata normal form. 3/2942 useless extension candidates. Maximal degree in co-relation 6580. Up to 481 conditions per place. [2023-11-29 06:09:51,609 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 0 selfloop transitions, 0 changer transitions 191/191 dead transitions. [2023-11-29 06:09:51,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 191 transitions, 892 flow [2023-11-29 06:09:51,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 06:09:51,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 06:09:51,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 349 transitions. [2023-11-29 06:09:51,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49715099715099714 [2023-11-29 06:09:51,614 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 349 transitions. [2023-11-29 06:09:51,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 349 transitions. [2023-11-29 06:09:51,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:09:51,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 349 transitions. [2023-11-29 06:09:51,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 19.38888888888889) internal successors, (349), 18 states have internal predecessors, (349), 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) [2023-11-29 06:09:51,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 39.0) internal successors, (741), 19 states have internal predecessors, (741), 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) [2023-11-29 06:09:51,623 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 39.0) internal successors, (741), 19 states have internal predecessors, (741), 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) [2023-11-29 06:09:51,624 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 108 flow. Second operand 18 states and 349 transitions. [2023-11-29 06:09:51,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 191 transitions, 892 flow [2023-11-29 06:09:51,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 191 transitions, 888 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 06:09:51,630 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2023-11-29 06:09:51,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2023-11-29 06:09:51,631 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2023-11-29 06:09:51,632 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2023-11-29 06:09:51,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 13.05) internal successors, (261), 20 states have internal predecessors, (261), 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) [2023-11-29 06:09:51,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-29 06:09:51,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-29 06:09:51,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-29 06:09:51,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-29 06:09:51,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:09:51,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:09:51,838 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-29 06:09:51,842 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 06:09:51,842 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 06:09:51,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:09:51 BasicIcfg [2023-11-29 06:09:51,848 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 06:09:51,849 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 06:09:51,849 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 06:09:51,850 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 06:09:51,850 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:09:46" (3/4) ... [2023-11-29 06:09:51,852 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 06:09:51,855 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 06:09:51,855 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 06:09:51,856 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-29 06:09:51,864 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 119 nodes and edges [2023-11-29 06:09:51,865 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2023-11-29 06:09:51,866 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-29 06:09:51,866 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 06:09:51,967 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 06:09:51,968 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 06:09:51,968 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 06:09:51,969 INFO L158 Benchmark]: Toolchain (without parser) took 6667.10ms. Allocated memory was 144.7MB in the beginning and 209.7MB in the end (delta: 65.0MB). Free memory was 103.3MB in the beginning and 98.9MB in the end (delta: 4.4MB). Peak memory consumption was 72.5MB. Max. memory is 16.1GB. [2023-11-29 06:09:51,970 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory was 82.4MB in the beginning and 82.4MB in the end (delta: 29.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:09:51,971 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.11ms. Allocated memory is still 144.7MB. Free memory was 102.6MB in the beginning and 90.7MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 06:09:51,971 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.92ms. Allocated memory is still 144.7MB. Free memory was 90.7MB in the beginning and 88.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:09:51,971 INFO L158 Benchmark]: Boogie Preprocessor took 54.29ms. Allocated memory is still 144.7MB. Free memory was 88.7MB in the beginning and 85.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 06:09:51,972 INFO L158 Benchmark]: RCFGBuilder took 875.15ms. Allocated memory is still 144.7MB. Free memory was 85.9MB in the beginning and 102.2MB in the end (delta: -16.3MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. [2023-11-29 06:09:51,972 INFO L158 Benchmark]: TraceAbstraction took 5222.36ms. Allocated memory was 144.7MB in the beginning and 209.7MB in the end (delta: 65.0MB). Free memory was 102.2MB in the beginning and 104.4MB in the end (delta: -2.2MB). Peak memory consumption was 97.6MB. Max. memory is 16.1GB. [2023-11-29 06:09:51,972 INFO L158 Benchmark]: Witness Printer took 119.43ms. Allocated memory is still 209.7MB. Free memory was 104.4MB in the beginning and 98.9MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 06:09:51,974 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory was 82.4MB in the beginning and 82.4MB in the end (delta: 29.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 335.11ms. Allocated memory is still 144.7MB. Free memory was 102.6MB in the beginning and 90.7MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.92ms. Allocated memory is still 144.7MB. Free memory was 90.7MB in the beginning and 88.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.29ms. Allocated memory is still 144.7MB. Free memory was 88.7MB in the beginning and 85.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 875.15ms. Allocated memory is still 144.7MB. Free memory was 85.9MB in the beginning and 102.2MB in the end (delta: -16.3MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5222.36ms. Allocated memory was 144.7MB in the beginning and 209.7MB in the end (delta: 65.0MB). Free memory was 102.2MB in the beginning and 104.4MB in the end (delta: -2.2MB). Peak memory consumption was 97.6MB. Max. memory is 16.1GB. * Witness Printer took 119.43ms. Allocated memory is still 209.7MB. Free memory was 104.4MB in the beginning and 98.9MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 115]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 60 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 291 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 277 mSDsluCounter, 286 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 272 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 772 IncrementalHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 14 mSDtfsCounter, 772 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=3, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 1065 SizeOfPredicates, 13 NumberOfNonLiveVariables, 227 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 5/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 06:09:51,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452bc496-c3bd-4188-a6c9-b332a7056e2d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE