./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc3c52-a24e-4a54-ad34-69b9d080963f/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc3c52-a24e-4a54-ad34-69b9d080963f/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_2adc3c52-a24e-4a54-ad34-69b9d080963f/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc3c52-a24e-4a54-ad34-69b9d080963f/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc3c52-a24e-4a54-ad34-69b9d080963f/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_2adc3c52-a24e-4a54-ad34-69b9d080963f/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 a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:30:15,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:30:15,890 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc3c52-a24e-4a54-ad34-69b9d080963f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:30:15,898 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:30:15,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:30:15,944 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:30:15,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:30:15,945 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:30:15,946 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:30:15,951 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:30:15,953 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:30:15,954 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:30:15,954 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:30:15,956 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:30:15,957 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:30:15,957 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:30:15,957 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:30:15,958 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:30:15,958 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:30:15,959 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:30:15,959 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:30:15,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:30:15,961 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:30:15,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:30:15,961 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:30:15,962 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:30:15,963 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:30:15,963 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:30:15,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:30:15,964 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:30:15,966 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:30:15,966 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:30:15,966 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:30:15,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:30:15,967 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:30:15,967 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:30:15,967 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:30:15,968 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:30:15,968 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:30:15,968 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_2adc3c52-a24e-4a54-ad34-69b9d080963f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc3c52-a24e-4a54-ad34-69b9d080963f/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f [2023-11-06 22:30:16,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:30:16,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:30:16,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:30:16,288 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:30:16,289 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:30:16,290 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc3c52-a24e-4a54-ad34-69b9d080963f/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2023-11-06 22:30:19,584 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:30:19,837 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:30:19,838 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc3c52-a24e-4a54-ad34-69b9d080963f/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2023-11-06 22:30:19,848 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc3c52-a24e-4a54-ad34-69b9d080963f/bin/uautomizer-verify-WvqO1wxjHP/data/24fade328/e8570c1b6d8d4245aaca1eeb4fba7383/FLAG13afcc995 [2023-11-06 22:30:19,863 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc3c52-a24e-4a54-ad34-69b9d080963f/bin/uautomizer-verify-WvqO1wxjHP/data/24fade328/e8570c1b6d8d4245aaca1eeb4fba7383 [2023-11-06 22:30:19,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:30:19,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:30:19,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:30:19,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:30:19,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:30:19,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:30:19" (1/1) ... [2023-11-06 22:30:19,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c3085fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:19, skipping insertion in model container [2023-11-06 22:30:19,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:30:19" (1/1) ... [2023-11-06 22:30:19,908 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:30:20,180 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_2adc3c52-a24e-4a54-ad34-69b9d080963f/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2023-11-06 22:30:20,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:30:20,206 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:30:20,237 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_2adc3c52-a24e-4a54-ad34-69b9d080963f/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2023-11-06 22:30:20,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:30:20,250 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:30:20,250 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:30:20,257 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:30:20,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:20 WrapperNode [2023-11-06 22:30:20,258 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:30:20,259 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:30:20,259 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:30:20,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:30:20,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:20" (1/1) ... [2023-11-06 22:30:20,277 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:20" (1/1) ... [2023-11-06 22:30:20,309 INFO L138 Inliner]: procedures = 27, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 178 [2023-11-06 22:30:20,310 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:30:20,311 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:30:20,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:30:20,311 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:30:20,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:20" (1/1) ... [2023-11-06 22:30:20,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:20" (1/1) ... [2023-11-06 22:30:20,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:20" (1/1) ... [2023-11-06 22:30:20,327 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:20" (1/1) ... [2023-11-06 22:30:20,339 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:20" (1/1) ... [2023-11-06 22:30:20,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:20" (1/1) ... [2023-11-06 22:30:20,347 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:20" (1/1) ... [2023-11-06 22:30:20,349 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:20" (1/1) ... [2023-11-06 22:30:20,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:30:20,355 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:30:20,355 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:30:20,355 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:30:20,356 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:20" (1/1) ... [2023-11-06 22:30:20,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:30:20,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc3c52-a24e-4a54-ad34-69b9d080963f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:20,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc3c52-a24e-4a54-ad34-69b9d080963f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:30:20,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc3c52-a24e-4a54-ad34-69b9d080963f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:30:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:30:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:30:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:30:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:30:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:30:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:30:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:30:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:30:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:30:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:30:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 22:30:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 22:30:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:30:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-06 22:30:20,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-06 22:30:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:30:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:30:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:30:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:30:20,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:30:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:30:20,456 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 22:30:20,627 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:30:20,633 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:30:21,099 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:30:21,239 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:30:21,239 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-06 22:30:21,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:30:21 BoogieIcfgContainer [2023-11-06 22:30:21,242 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:30:21,245 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:30:21,245 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:30:21,248 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:30:21,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:30:19" (1/3) ... [2023-11-06 22:30:21,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50242a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:30:21, skipping insertion in model container [2023-11-06 22:30:21,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:20" (2/3) ... [2023-11-06 22:30:21,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50242a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:30:21, skipping insertion in model container [2023-11-06 22:30:21,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:30:21" (3/3) ... [2023-11-06 22:30:21,252 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2023-11-06 22:30:21,261 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:30:21,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:30:21,270 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:30:21,270 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:30:21,393 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-06 22:30:21,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 198 transitions, 431 flow [2023-11-06 22:30:21,522 INFO L124 PetriNetUnfolderBase]: 14/193 cut-off events. [2023-11-06 22:30:21,522 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:30:21,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 193 events. 14/193 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 154 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 156. Up to 2 conditions per place. [2023-11-06 22:30:21,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 198 transitions, 431 flow [2023-11-06 22:30:21,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 178 transitions, 386 flow [2023-11-06 22:30:21,539 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:30:21,555 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 178 transitions, 386 flow [2023-11-06 22:30:21,557 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 178 transitions, 386 flow [2023-11-06 22:30:21,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 178 transitions, 386 flow [2023-11-06 22:30:21,609 INFO L124 PetriNetUnfolderBase]: 14/178 cut-off events. [2023-11-06 22:30:21,609 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:30:21,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 178 events. 14/178 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 152 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 156. Up to 2 conditions per place. [2023-11-06 22:30:21,615 INFO L119 LiptonReduction]: Number of co-enabled transitions 4286 [2023-11-06 22:30:31,042 INFO L134 LiptonReduction]: Checked pairs total: 5847 [2023-11-06 22:30:31,042 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-11-06 22:30:31,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:30:31,063 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;@527e0cf0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:30:31,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-06 22:30:31,074 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:30:31,074 INFO L124 PetriNetUnfolderBase]: 5/37 cut-off events. [2023-11-06 22:30:31,075 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:30:31,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:31,076 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] [2023-11-06 22:30:31,076 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 3 more)] === [2023-11-06 22:30:31,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:31,082 INFO L85 PathProgramCache]: Analyzing trace with hash -439582842, now seen corresponding path program 1 times [2023-11-06 22:30:31,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:31,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262596124] [2023-11-06 22:30:31,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:31,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:31,718 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 22:30:31,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:31,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262596124] [2023-11-06 22:30:31,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262596124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:31,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:31,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:30:31,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776535781] [2023-11-06 22:30:31,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:31,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:30:31,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:31,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:30:31,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:30:31,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 361 [2023-11-06 22:30:31,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 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 22:30:31,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:31,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 361 [2023-11-06 22:30:31,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:32,950 INFO L124 PetriNetUnfolderBase]: 6258/7742 cut-off events. [2023-11-06 22:30:32,950 INFO L125 PetriNetUnfolderBase]: For 365/365 co-relation queries the response was YES. [2023-11-06 22:30:32,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16106 conditions, 7742 events. 6258/7742 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 30584 event pairs, 3053 based on Foata normal form. 0/5373 useless extension candidates. Maximal degree in co-relation 13728. Up to 6184 conditions per place. [2023-11-06 22:30:33,020 INFO L140 encePairwiseOnDemand]: 357/361 looper letters, 52 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-11-06 22:30:33,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 266 flow [2023-11-06 22:30:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:30:33,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:30:33,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 720 transitions. [2023-11-06 22:30:33,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4986149584487535 [2023-11-06 22:30:33,041 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 720 transitions. [2023-11-06 22:30:33,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 720 transitions. [2023-11-06 22:30:33,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:33,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 720 transitions. [2023-11-06 22:30:33,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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 22:30:33,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 361.0) internal successors, (1805), 5 states have internal predecessors, (1805), 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 22:30:33,068 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 361.0) internal successors, (1805), 5 states have internal predecessors, (1805), 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 22:30:33,070 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 106 flow. Second operand 4 states and 720 transitions. [2023-11-06 22:30:33,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 266 flow [2023-11-06 22:30:33,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 238 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-06 22:30:33,095 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 100 flow [2023-11-06 22:30:33,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2023-11-06 22:30:33,103 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places. [2023-11-06 22:30:33,103 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 100 flow [2023-11-06 22:30:33,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 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 22:30:33,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:33,105 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] [2023-11-06 22:30:33,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:30:33,106 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 3 more)] === [2023-11-06 22:30:33,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:33,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1399148157, now seen corresponding path program 1 times [2023-11-06 22:30:33,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:33,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390300648] [2023-11-06 22:30:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:33,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:30:33,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:33,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390300648] [2023-11-06 22:30:33,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390300648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:33,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:33,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:30:33,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013186608] [2023-11-06 22:30:33,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:33,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:30:33,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:33,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:30:33,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:30:33,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 361 [2023-11-06 22:30:33,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 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 22:30:33,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:33,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 361 [2023-11-06 22:30:33,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:34,628 INFO L124 PetriNetUnfolderBase]: 7606/9402 cut-off events. [2023-11-06 22:30:34,628 INFO L125 PetriNetUnfolderBase]: For 1678/1678 co-relation queries the response was YES. [2023-11-06 22:30:34,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20789 conditions, 9402 events. 7606/9402 cut-off events. For 1678/1678 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 38206 event pairs, 3867 based on Foata normal form. 0/6600 useless extension candidates. Maximal degree in co-relation 6785. Up to 7680 conditions per place. [2023-11-06 22:30:34,702 INFO L140 encePairwiseOnDemand]: 357/361 looper letters, 54 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-11-06 22:30:34,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 268 flow [2023-11-06 22:30:34,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:30:34,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:30:34,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 720 transitions. [2023-11-06 22:30:34,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4986149584487535 [2023-11-06 22:30:34,710 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 720 transitions. [2023-11-06 22:30:34,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 720 transitions. [2023-11-06 22:30:34,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:34,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 720 transitions. [2023-11-06 22:30:34,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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 22:30:34,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 361.0) internal successors, (1805), 5 states have internal predecessors, (1805), 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 22:30:34,720 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 361.0) internal successors, (1805), 5 states have internal predecessors, (1805), 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 22:30:34,725 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 100 flow. Second operand 4 states and 720 transitions. [2023-11-06 22:30:34,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 268 flow [2023-11-06 22:30:34,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 258 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:30:34,734 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 108 flow [2023-11-06 22:30:34,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-11-06 22:30:34,736 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2023-11-06 22:30:34,736 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 108 flow [2023-11-06 22:30:34,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 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 22:30:34,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:34,737 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] [2023-11-06 22:30:34,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:30:34,738 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 3 more)] === [2023-11-06 22:30:34,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:34,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1028987226, now seen corresponding path program 1 times [2023-11-06 22:30:34,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:34,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241375669] [2023-11-06 22:30:34,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:34,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:30:34,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:34,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241375669] [2023-11-06 22:30:34,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241375669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:34,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:34,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:30:34,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019701330] [2023-11-06 22:30:34,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:34,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:30:34,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:34,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:30:34,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:30:35,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 361 [2023-11-06 22:30:35,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 174.5) internal successors, (698), 4 states have internal predecessors, (698), 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 22:30:35,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:35,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 361 [2023-11-06 22:30:35,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:36,426 INFO L124 PetriNetUnfolderBase]: 9362/11730 cut-off events. [2023-11-06 22:30:36,427 INFO L125 PetriNetUnfolderBase]: For 2948/2948 co-relation queries the response was YES. [2023-11-06 22:30:36,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27221 conditions, 11730 events. 9362/11730 cut-off events. For 2948/2948 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 47483 event pairs, 4104 based on Foata normal form. 0/8955 useless extension candidates. Maximal degree in co-relation 10250. Up to 8774 conditions per place. [2023-11-06 22:30:36,511 INFO L140 encePairwiseOnDemand]: 357/361 looper letters, 59 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-11-06 22:30:36,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 63 transitions, 298 flow [2023-11-06 22:30:36,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:30:36,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:30:36,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 723 transitions. [2023-11-06 22:30:36,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5006925207756233 [2023-11-06 22:30:36,517 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 723 transitions. [2023-11-06 22:30:36,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 723 transitions. [2023-11-06 22:30:36,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:36,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 723 transitions. [2023-11-06 22:30:36,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:36,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 361.0) internal successors, (1805), 5 states have internal predecessors, (1805), 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 22:30:36,526 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 361.0) internal successors, (1805), 5 states have internal predecessors, (1805), 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 22:30:36,527 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 108 flow. Second operand 4 states and 723 transitions. [2023-11-06 22:30:36,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 63 transitions, 298 flow [2023-11-06 22:30:36,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 288 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:30:36,532 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 116 flow [2023-11-06 22:30:36,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-11-06 22:30:36,534 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2023-11-06 22:30:36,538 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 116 flow [2023-11-06 22:30:36,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.5) internal successors, (698), 4 states have internal predecessors, (698), 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 22:30:36,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:36,540 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] [2023-11-06 22:30:36,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:30:36,540 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 3 more)] === [2023-11-06 22:30:36,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:36,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1378490016, now seen corresponding path program 1 times [2023-11-06 22:30:36,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:36,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333621140] [2023-11-06 22:30:36,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:36,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:30:36,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:36,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333621140] [2023-11-06 22:30:36,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333621140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:36,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:36,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:30:36,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426231068] [2023-11-06 22:30:36,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:36,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:30:36,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:36,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:30:36,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:30:36,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 361 [2023-11-06 22:30:36,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 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 22:30:36,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:36,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 361 [2023-11-06 22:30:36,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:38,172 INFO L124 PetriNetUnfolderBase]: 8748/11078 cut-off events. [2023-11-06 22:30:38,173 INFO L125 PetriNetUnfolderBase]: For 3209/3933 co-relation queries the response was YES. [2023-11-06 22:30:38,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28103 conditions, 11078 events. 8748/11078 cut-off events. For 3209/3933 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 44651 event pairs, 4945 based on Foata normal form. 724/9665 useless extension candidates. Maximal degree in co-relation 9653. Up to 8498 conditions per place. [2023-11-06 22:30:38,248 INFO L140 encePairwiseOnDemand]: 357/361 looper letters, 61 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2023-11-06 22:30:38,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 65 transitions, 315 flow [2023-11-06 22:30:38,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:30:38,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:30:38,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 723 transitions. [2023-11-06 22:30:38,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5006925207756233 [2023-11-06 22:30:38,252 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 723 transitions. [2023-11-06 22:30:38,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 723 transitions. [2023-11-06 22:30:38,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:38,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 723 transitions. [2023-11-06 22:30:38,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:38,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 361.0) internal successors, (1805), 5 states have internal predecessors, (1805), 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 22:30:38,261 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 361.0) internal successors, (1805), 5 states have internal predecessors, (1805), 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 22:30:38,261 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 116 flow. Second operand 4 states and 723 transitions. [2023-11-06 22:30:38,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 65 transitions, 315 flow [2023-11-06 22:30:38,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 306 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:30:38,266 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 124 flow [2023-11-06 22:30:38,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-11-06 22:30:38,268 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2023-11-06 22:30:38,268 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 124 flow [2023-11-06 22:30:38,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 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 22:30:38,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:38,269 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] [2023-11-06 22:30:38,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:30:38,270 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:30:38,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:38,270 INFO L85 PathProgramCache]: Analyzing trace with hash 502392140, now seen corresponding path program 1 times [2023-11-06 22:30:38,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:38,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999306660] [2023-11-06 22:30:38,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:38,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:30:38,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:38,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999306660] [2023-11-06 22:30:38,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999306660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:38,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:38,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:30:38,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708220412] [2023-11-06 22:30:38,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:38,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:38,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:38,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:38,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:30:38,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 361 [2023-11-06 22:30:38,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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 22:30:38,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:38,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 361 [2023-11-06 22:30:38,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:39,615 INFO L124 PetriNetUnfolderBase]: 6702/8547 cut-off events. [2023-11-06 22:30:39,615 INFO L125 PetriNetUnfolderBase]: For 2883/3909 co-relation queries the response was YES. [2023-11-06 22:30:39,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22655 conditions, 8547 events. 6702/8547 cut-off events. For 2883/3909 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 34138 event pairs, 4945 based on Foata normal form. 1026/7792 useless extension candidates. Maximal degree in co-relation 7841. Up to 8499 conditions per place. [2023-11-06 22:30:39,685 INFO L140 encePairwiseOnDemand]: 358/361 looper letters, 39 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-06 22:30:39,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 208 flow [2023-11-06 22:30:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:39,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:30:39,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-11-06 22:30:39,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494921514312096 [2023-11-06 22:30:39,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-11-06 22:30:39,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-11-06 22:30:39,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:39,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-11-06 22:30:39,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 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 22:30:39,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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 22:30:39,698 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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 22:30:39,699 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 124 flow. Second operand 3 states and 536 transitions. [2023-11-06 22:30:39,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 208 flow [2023-11-06 22:30:39,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:30:39,706 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 130 flow [2023-11-06 22:30:39,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2023-11-06 22:30:39,709 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places. [2023-11-06 22:30:39,710 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 130 flow [2023-11-06 22:30:39,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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 22:30:39,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:39,711 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] [2023-11-06 22:30:39,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:30:39,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:30:39,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:39,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1818639246, now seen corresponding path program 1 times [2023-11-06 22:30:39,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:39,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254694768] [2023-11-06 22:30:39,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:39,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:40,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:30:40,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:40,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254694768] [2023-11-06 22:30:40,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254694768] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:30:40,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408874954] [2023-11-06 22:30:40,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:40,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:40,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc3c52-a24e-4a54-ad34-69b9d080963f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:40,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc3c52-a24e-4a54-ad34-69b9d080963f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:40,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc3c52-a24e-4a54-ad34-69b9d080963f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:30:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:40,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-06 22:30:40,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:41,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:30:41,257 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:30:41,440 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 32 treesize of output 16 [2023-11-06 22:30:41,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:30:41,562 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2023-11-06 22:30:41,610 INFO L351 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 17 treesize of output 9 [2023-11-06 22:30:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:30:41,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:30:45,421 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~min~0 1)) (.cse1 (+ (* c_thread1Thread1of1ForFork3_~i~0 4) c_~A~0.offset))) (and (forall ((v_ArrVal_173 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_173))) (let ((.cse0 (select .cse4 c_~A~0.base))) (or (< (select .cse0 .cse1) .cse2) (forall ((v_ArrVal_175 (Array Int Int))) (let ((.cse3 (select (select (store (store .cse4 c_~A~0.base (store .cse0 c_~A~0.offset (+ (select .cse0 c_~A~0.offset) 1))) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_175) c_~A~0.base) c_~A~0.offset))) (or (< 2147483646 .cse3) (< c_~min~0 (+ 2 .cse3))))))))) (forall ((v_ArrVal_173 (Array Int Int))) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_173))) (let ((.cse9 (select .cse8 c_~A~0.base))) (let ((.cse5 (select .cse9 .cse1))) (or (< c_~min~0 .cse5) (forall ((v_ArrVal_175 (Array Int Int))) (let ((.cse7 (select .cse9 c_~A~0.offset))) (let ((.cse6 (select (select (store (store .cse8 c_~A~0.base (store .cse9 c_~A~0.offset (+ .cse7 1))) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_175) c_~A~0.base) c_~A~0.offset))) (or (< 2147483645 .cse6) (< .cse7 (+ .cse6 1)) (< .cse5 (+ 3 .cse6))))))))))) (forall ((v_ArrVal_173 (Array Int Int))) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_173))) (let ((.cse10 (select .cse13 c_~A~0.base))) (or (< (select .cse10 .cse1) .cse2) (forall ((v_ArrVal_175 (Array Int Int))) (let ((.cse12 (select .cse10 c_~A~0.offset))) (let ((.cse11 (select (select (store (store .cse13 c_~A~0.base (store .cse10 c_~A~0.offset (+ .cse12 1))) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_175) c_~A~0.base) c_~A~0.offset))) (or (< 2147483645 .cse11) (< c_~min~0 (+ 3 .cse11)) (< .cse12 (+ .cse11 1)))))))))) (forall ((v_ArrVal_173 (Array Int Int))) (let ((.cse16 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_173))) (let ((.cse17 (select .cse16 c_~A~0.base))) (let ((.cse14 (select .cse17 .cse1))) (or (< c_~min~0 .cse14) (forall ((v_ArrVal_175 (Array Int Int))) (let ((.cse15 (select (select (store (store .cse16 c_~A~0.base (store .cse17 c_~A~0.offset (+ (select .cse17 c_~A~0.offset) 1))) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_175) c_~A~0.base) c_~A~0.offset))) (or (< 2147483646 .cse15) (< .cse14 (+ 2 .cse15)))))))))))) is different from false [2023-11-06 22:30:45,622 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse5 (+ c_~min~0 1))) (and (forall ((v_ArrVal_173 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_173))) (let ((.cse3 (select .cse2 c_~A~0.base))) (let ((.cse0 (select .cse3 c_~A~0.offset))) (or (forall ((v_ArrVal_175 (Array Int Int))) (let ((.cse1 (select (select (store (store .cse2 c_~A~0.base (store .cse3 c_~A~0.offset (+ .cse0 1))) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_175) c_~A~0.base) c_~A~0.offset))) (or (< .cse0 (+ 2 .cse1)) (< 2147483646 .cse1)))) (< c_~min~0 .cse0)))))) (forall ((v_ArrVal_173 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_173))) (let ((.cse8 (select .cse7 c_~A~0.base))) (let ((.cse4 (select .cse8 c_~A~0.offset))) (or (< .cse4 .cse5) (forall ((v_ArrVal_175 (Array Int Int))) (let ((.cse6 (select (select (store (store .cse7 c_~A~0.base (store .cse8 c_~A~0.offset (+ .cse4 1))) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_175) c_~A~0.base) c_~A~0.offset))) (or (< 2147483645 .cse6) (< c_~min~0 (+ 3 .cse6)))))))))) (forall ((v_ArrVal_173 (Array Int Int))) (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_173))) (let ((.cse12 (select .cse11 c_~A~0.base))) (let ((.cse9 (select .cse12 c_~A~0.offset))) (or (forall ((v_ArrVal_175 (Array Int Int))) (let ((.cse10 (select (select (store (store .cse11 c_~A~0.base (store .cse12 c_~A~0.offset (+ .cse9 1))) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_175) c_~A~0.base) c_~A~0.offset))) (or (< .cse9 (+ 3 .cse10)) (< 2147483645 .cse10)))) (< c_~min~0 .cse9)))))) (forall ((v_ArrVal_173 (Array Int Int))) (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_173))) (let ((.cse16 (select .cse15 c_~A~0.base))) (let ((.cse13 (select .cse16 c_~A~0.offset))) (or (< .cse13 .cse5) (forall ((v_ArrVal_175 (Array Int Int))) (let ((.cse14 (select (select (store (store .cse15 c_~A~0.base (store .cse16 c_~A~0.offset (+ .cse13 1))) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_175) c_~A~0.base) c_~A~0.offset))) (or (< 2147483646 .cse14) (< c_~min~0 (+ 2 .cse14)))))))))))) is different from false [2023-11-06 22:30:45,772 INFO L351 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 521 treesize of output 469 [2023-11-06 22:30:45,807 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 245 treesize of output 237 [2023-11-06 22:30:45,819 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 237 treesize of output 231 [2023-11-06 22:30:45,830 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 231 treesize of output 223 [2023-11-06 22:30:45,847 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 223 treesize of output 217 [2023-11-06 22:30:45,858 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 217 treesize of output 213 [2023-11-06 22:30:45,877 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 213 treesize of output 211 [2023-11-06 22:30:45,895 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 211 treesize of output 207 [2023-11-06 22:30:45,906 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 207 treesize of output 205 [2023-11-06 22:30:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:30:48,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408874954] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:30:48,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:30:48,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 34 [2023-11-06 22:30:48,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713015870] [2023-11-06 22:30:48,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:30:48,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-06 22:30:48,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:48,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-06 22:30:48,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=952, Unknown=16, NotChecked=130, Total=1260 [2023-11-06 22:30:48,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 361 [2023-11-06 22:30:48,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 130 flow. Second operand has 36 states, 36 states have (on average 121.08333333333333) internal successors, (4359), 36 states have internal predecessors, (4359), 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 22:30:48,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:48,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 361 [2023-11-06 22:30:48,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:26,360 INFO L124 PetriNetUnfolderBase]: 139448/177489 cut-off events. [2023-11-06 22:31:26,360 INFO L125 PetriNetUnfolderBase]: For 53917/61190 co-relation queries the response was YES. [2023-11-06 22:31:26,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464596 conditions, 177489 events. 139448/177489 cut-off events. For 53917/61190 co-relation queries the response was YES. Maximal size of possible extension queue 5217. Compared 1002923 event pairs, 4012 based on Foata normal form. 7296/142482 useless extension candidates. Maximal degree in co-relation 464581. Up to 36125 conditions per place. [2023-11-06 22:31:27,474 INFO L140 encePairwiseOnDemand]: 345/361 looper letters, 858 selfloop transitions, 370 changer transitions 1159/2388 dead transitions. [2023-11-06 22:31:27,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 2388 transitions, 12027 flow [2023-11-06 22:31:27,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-11-06 22:31:27,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2023-11-06 22:31:27,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 17151 transitions. [2023-11-06 22:31:27,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37409208890439943 [2023-11-06 22:31:27,546 INFO L72 ComplementDD]: Start complementDD. Operand 127 states and 17151 transitions. [2023-11-06 22:31:27,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 17151 transitions. [2023-11-06 22:31:27,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:27,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 127 states and 17151 transitions. [2023-11-06 22:31:27,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 128 states, 127 states have (on average 135.04724409448818) internal successors, (17151), 127 states have internal predecessors, (17151), 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 22:31:27,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 128 states, 128 states have (on average 361.0) internal successors, (46208), 128 states have internal predecessors, (46208), 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 22:31:27,729 INFO L81 ComplementDD]: Finished complementDD. Result has 128 states, 128 states have (on average 361.0) internal successors, (46208), 128 states have internal predecessors, (46208), 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 22:31:27,737 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 130 flow. Second operand 127 states and 17151 transitions. [2023-11-06 22:31:27,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 2388 transitions, 12027 flow [2023-11-06 22:31:33,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 2388 transitions, 12023 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:31:33,992 INFO L231 Difference]: Finished difference. Result has 261 places, 496 transitions, 3228 flow [2023-11-06 22:31:33,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=127, PETRI_FLOW=3228, PETRI_PLACES=261, PETRI_TRANSITIONS=496} [2023-11-06 22:31:33,993 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 212 predicate places. [2023-11-06 22:31:33,993 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 496 transitions, 3228 flow [2023-11-06 22:31:33,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 121.08333333333333) internal successors, (4359), 36 states have internal predecessors, (4359), 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 22:31:33,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:33,996 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] [2023-11-06 22:31:34,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc3c52-a24e-4a54-ad34-69b9d080963f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:34,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc3c52-a24e-4a54-ad34-69b9d080963f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:31:34,202 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 22:31:34,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:34,203 INFO L85 PathProgramCache]: Analyzing trace with hash 2111865224, now seen corresponding path program 2 times [2023-11-06 22:31:34,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:34,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496482766] [2023-11-06 22:31:34,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:34,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:31:34,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:34,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496482766] [2023-11-06 22:31:34,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496482766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:34,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:34,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:31:34,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512215339] [2023-11-06 22:31:34,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:34,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:34,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:34,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:34,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:34,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 361 [2023-11-06 22:31:34,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 496 transitions, 3228 flow. Second operand has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 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 22:31:34,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:34,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 361 [2023-11-06 22:31:34,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand