./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 387afe7095db5eeb3a9188bc3fe181fa803bb62f73944f6d781c5c9340fce39e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:06:53,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:06:53,439 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:06:53,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:06:53,449 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:06:53,491 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:06:53,492 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:06:53,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:06:53,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:06:53,495 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:06:53,495 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:06:53,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:06:53,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:06:53,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:06:53,499 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:06:53,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:06:53,500 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:06:53,501 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:06:53,501 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:06:53,501 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:06:53,501 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:06:53,502 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:06:53,503 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:06:53,503 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:06:53,503 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:06:53,504 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:06:53,504 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:06:53,504 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:06:53,505 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:06:53,505 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:06:53,505 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:06:53,505 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:06:53,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:06:53,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:06:53,506 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:06:53,507 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:06:53,507 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:06:53,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:06:53,507 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:06:53,507 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:06:53,508 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:06:53,508 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:06:53,508 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_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 387afe7095db5eeb3a9188bc3fe181fa803bb62f73944f6d781c5c9340fce39e [2024-10-31 22:06:53,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:06:53,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:06:53,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:06:53,838 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:06:53,839 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:06:53,841 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c Unable to find full path for "g++" [2024-10-31 22:06:56,318 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:06:56,548 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:06:56,549 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2024-10-31 22:06:56,557 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/data/6ab7d1cd7/42d4619e3de34579ace85ff8c8188559/FLAGf4fe68300 [2024-10-31 22:06:56,570 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/data/6ab7d1cd7/42d4619e3de34579ace85ff8c8188559 [2024-10-31 22:06:56,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:06:56,575 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:06:56,576 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:06:56,576 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:06:56,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:06:56,583 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:06:56" (1/1) ... [2024-10-31 22:06:56,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6afcf116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:56, skipping insertion in model container [2024-10-31 22:06:56,585 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:06:56" (1/1) ... [2024-10-31 22:06:56,609 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:06:56,887 WARN L251 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_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c[2580,2593] [2024-10-31 22:06:56,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:06:56,904 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:06:56,937 WARN L251 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_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c[2580,2593] [2024-10-31 22:06:56,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:06:56,961 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:06:56,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:56 WrapperNode [2024-10-31 22:06:56,961 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:06:56,962 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:06:56,963 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:06:56,963 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:06:56,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:56" (1/1) ... [2024-10-31 22:06:56,977 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:56" (1/1) ... [2024-10-31 22:06:57,002 INFO L138 Inliner]: procedures = 20, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2024-10-31 22:06:57,003 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:06:57,004 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:06:57,004 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:06:57,004 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:06:57,017 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:56" (1/1) ... [2024-10-31 22:06:57,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:56" (1/1) ... [2024-10-31 22:06:57,019 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:56" (1/1) ... [2024-10-31 22:06:57,045 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:06:57,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:56" (1/1) ... [2024-10-31 22:06:57,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:56" (1/1) ... [2024-10-31 22:06:57,050 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:56" (1/1) ... [2024-10-31 22:06:57,054 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:56" (1/1) ... [2024-10-31 22:06:57,055 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:56" (1/1) ... [2024-10-31 22:06:57,056 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:56" (1/1) ... [2024-10-31 22:06:57,058 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:06:57,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:06:57,060 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:06:57,060 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:06:57,065 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:56" (1/1) ... [2024-10-31 22:06:57,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:06:57,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:57,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:57,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:06:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:06:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:06:57,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:06:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:06:57,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:06:57,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:06:57,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:06:57,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:06:57,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:06:57,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:06:57,153 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:06:57,249 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:06:57,251 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:06:57,497 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:06:57,497 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:06:57,722 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:06:57,723 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:06:57,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:06:57 BoogieIcfgContainer [2024-10-31 22:06:57,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:06:57,728 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:06:57,729 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:06:57,733 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:06:57,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:06:56" (1/3) ... [2024-10-31 22:06:57,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c1f3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:06:57, skipping insertion in model container [2024-10-31 22:06:57,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:56" (2/3) ... [2024-10-31 22:06:57,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c1f3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:06:57, skipping insertion in model container [2024-10-31 22:06:57,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:06:57" (3/3) ... [2024-10-31 22:06:57,738 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2024-10-31 22:06:57,753 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:06:57,753 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:06:57,754 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:06:57,801 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:06:57,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 28 transitions, 70 flow [2024-10-31 22:06:57,874 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-10-31 22:06:57,874 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:06:57,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 4/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-10-31 22:06:57,878 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 28 transitions, 70 flow [2024-10-31 22:06:57,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 25 transitions, 62 flow [2024-10-31 22:06:57,891 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:06:57,898 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@49e9142e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:06:57,898 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-31 22:06:57,917 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:06:57,917 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-10-31 22:06:57,917 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:06:57,917 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:57,918 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:57,918 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:06:57,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:57,924 INFO L85 PathProgramCache]: Analyzing trace with hash -314967004, now seen corresponding path program 1 times [2024-10-31 22:06:57,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:57,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118023082] [2024-10-31 22:06:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:57,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:58,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:58,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118023082] [2024-10-31 22:06:58,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118023082] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:58,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:58,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:06:58,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868007815] [2024-10-31 22:06:58,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:58,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:06:58,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:58,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:06:58,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:06:58,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-10-31 22:06:58,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-10-31 22:06:58,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:58,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-10-31 22:06:58,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:58,543 INFO L124 PetriNetUnfolderBase]: 130/252 cut-off events. [2024-10-31 22:06:58,544 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-31 22:06:58,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 252 events. 130/252 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 939 event pairs, 12 based on Foata normal form. 1/214 useless extension candidates. Maximal degree in co-relation 404. Up to 165 conditions per place. [2024-10-31 22:06:58,551 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 21 selfloop transitions, 5 changer transitions 1/36 dead transitions. [2024-10-31 22:06:58,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 36 transitions, 147 flow [2024-10-31 22:06:58,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:06:58,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:06:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-10-31 22:06:58,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2024-10-31 22:06:58,570 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 62 flow. Second operand 3 states and 61 transitions. [2024-10-31 22:06:58,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 36 transitions, 147 flow [2024-10-31 22:06:58,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 36 transitions, 133 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:06:58,581 INFO L231 Difference]: Finished difference. Result has 27 places, 29 transitions, 87 flow [2024-10-31 22:06:58,584 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=27, PETRI_TRANSITIONS=29} [2024-10-31 22:06:58,588 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2024-10-31 22:06:58,589 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 29 transitions, 87 flow [2024-10-31 22:06:58,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-10-31 22:06:58,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:58,589 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:58,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:06:58,590 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:06:58,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:58,591 INFO L85 PathProgramCache]: Analyzing trace with hash 112974820, now seen corresponding path program 1 times [2024-10-31 22:06:58,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:58,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600422026] [2024-10-31 22:06:58,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:58,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:58,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:58,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600422026] [2024-10-31 22:06:58,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600422026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:58,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:58,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:06:58,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692603445] [2024-10-31 22:06:58,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:58,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:06:58,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:58,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:06:58,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:06:58,898 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-10-31 22:06:58,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 29 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-10-31 22:06:58,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:58,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-10-31 22:06:58,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:59,087 INFO L124 PetriNetUnfolderBase]: 173/318 cut-off events. [2024-10-31 22:06:59,087 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-10-31 22:06:59,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 318 events. 173/318 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1320 event pairs, 16 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 342. Up to 129 conditions per place. [2024-10-31 22:06:59,092 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 35 selfloop transitions, 9 changer transitions 3/58 dead transitions. [2024-10-31 22:06:59,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 58 transitions, 254 flow [2024-10-31 22:06:59,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:06:59,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:06:59,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-10-31 22:06:59,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7214285714285714 [2024-10-31 22:06:59,095 INFO L175 Difference]: Start difference. First operand has 27 places, 29 transitions, 87 flow. Second operand 5 states and 101 transitions. [2024-10-31 22:06:59,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 58 transitions, 254 flow [2024-10-31 22:06:59,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 58 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:06:59,099 INFO L231 Difference]: Finished difference. Result has 33 places, 36 transitions, 139 flow [2024-10-31 22:06:59,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=33, PETRI_TRANSITIONS=36} [2024-10-31 22:06:59,100 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2024-10-31 22:06:59,100 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 36 transitions, 139 flow [2024-10-31 22:06:59,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-10-31 22:06:59,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:59,101 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:59,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:06:59,102 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:06:59,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:59,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1594057982, now seen corresponding path program 2 times [2024-10-31 22:06:59,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:59,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017551390] [2024-10-31 22:06:59,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:59,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:59,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:59,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017551390] [2024-10-31 22:06:59,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017551390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:59,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:59,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:06:59,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299665570] [2024-10-31 22:06:59,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:59,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:06:59,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:59,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:06:59,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:06:59,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-10-31 22:06:59,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 36 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-10-31 22:06:59,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:59,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-10-31 22:06:59,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:59,497 INFO L124 PetriNetUnfolderBase]: 160/325 cut-off events. [2024-10-31 22:06:59,498 INFO L125 PetriNetUnfolderBase]: For 202/206 co-relation queries the response was YES. [2024-10-31 22:06:59,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822 conditions, 325 events. 160/325 cut-off events. For 202/206 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1402 event pairs, 11 based on Foata normal form. 17/305 useless extension candidates. Maximal degree in co-relation 248. Up to 80 conditions per place. [2024-10-31 22:06:59,505 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 37 selfloop transitions, 12 changer transitions 3/63 dead transitions. [2024-10-31 22:06:59,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 63 transitions, 343 flow [2024-10-31 22:06:59,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:06:59,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:06:59,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-10-31 22:06:59,510 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7214285714285714 [2024-10-31 22:06:59,510 INFO L175 Difference]: Start difference. First operand has 33 places, 36 transitions, 139 flow. Second operand 5 states and 101 transitions. [2024-10-31 22:06:59,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 63 transitions, 343 flow [2024-10-31 22:06:59,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 63 transitions, 343 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:06:59,516 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 225 flow [2024-10-31 22:06:59,517 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2024-10-31 22:06:59,518 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 13 predicate places. [2024-10-31 22:06:59,519 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 225 flow [2024-10-31 22:06:59,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-10-31 22:06:59,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:59,520 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:59,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:06:59,521 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:06:59,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:59,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1183701864, now seen corresponding path program 1 times [2024-10-31 22:06:59,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:59,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571151511] [2024-10-31 22:06:59,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:59,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:59,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:59,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571151511] [2024-10-31 22:06:59,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571151511] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:59,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:59,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:06:59,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602478403] [2024-10-31 22:06:59,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:59,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:06:59,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:59,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:06:59,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:06:59,710 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-10-31 22:06:59,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-10-31 22:06:59,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:59,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-10-31 22:06:59,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:59,913 INFO L124 PetriNetUnfolderBase]: 159/314 cut-off events. [2024-10-31 22:06:59,914 INFO L125 PetriNetUnfolderBase]: For 587/609 co-relation queries the response was YES. [2024-10-31 22:06:59,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046 conditions, 314 events. 159/314 cut-off events. For 587/609 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1340 event pairs, 15 based on Foata normal form. 11/287 useless extension candidates. Maximal degree in co-relation 327. Up to 145 conditions per place. [2024-10-31 22:06:59,919 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 42 selfloop transitions, 8 changer transitions 4/65 dead transitions. [2024-10-31 22:06:59,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 65 transitions, 435 flow [2024-10-31 22:06:59,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:06:59,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:06:59,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-10-31 22:06:59,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7071428571428572 [2024-10-31 22:06:59,923 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 225 flow. Second operand 5 states and 99 transitions. [2024-10-31 22:06:59,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 65 transitions, 435 flow [2024-10-31 22:06:59,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 431 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-10-31 22:06:59,930 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 272 flow [2024-10-31 22:06:59,930 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-10-31 22:06:59,931 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 19 predicate places. [2024-10-31 22:06:59,931 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 272 flow [2024-10-31 22:06:59,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-10-31 22:06:59,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:59,932 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:59,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:06:59,933 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:06:59,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:59,934 INFO L85 PathProgramCache]: Analyzing trace with hash 707370358, now seen corresponding path program 2 times [2024-10-31 22:06:59,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:59,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110379838] [2024-10-31 22:06:59,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:59,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:00,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:00,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110379838] [2024-10-31 22:07:00,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110379838] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:00,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:00,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:07:00,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316573332] [2024-10-31 22:07:00,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:00,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:00,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:00,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:00,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:00,095 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-10-31 22:07:00,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-10-31 22:07:00,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:07:00,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-10-31 22:07:00,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:07:00,253 INFO L124 PetriNetUnfolderBase]: 148/311 cut-off events. [2024-10-31 22:07:00,255 INFO L125 PetriNetUnfolderBase]: For 623/631 co-relation queries the response was YES. [2024-10-31 22:07:00,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 311 events. 148/311 cut-off events. For 623/631 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1244 event pairs, 11 based on Foata normal form. 16/292 useless extension candidates. Maximal degree in co-relation 722. Up to 80 conditions per place. [2024-10-31 22:07:00,259 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 40 selfloop transitions, 12 changer transitions 2/65 dead transitions. [2024-10-31 22:07:00,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 65 transitions, 482 flow [2024-10-31 22:07:00,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:07:00,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:07:00,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-10-31 22:07:00,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-10-31 22:07:00,261 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 272 flow. Second operand 5 states and 96 transitions. [2024-10-31 22:07:00,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 65 transitions, 482 flow [2024-10-31 22:07:00,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 65 transitions, 466 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-31 22:07:00,270 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 335 flow [2024-10-31 22:07:00,271 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-10-31 22:07:00,273 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 25 predicate places. [2024-10-31 22:07:00,274 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 335 flow [2024-10-31 22:07:00,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-10-31 22:07:00,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:07:00,275 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:00,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:07:00,276 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:07:00,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:00,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1306210578, now seen corresponding path program 1 times [2024-10-31 22:07:00,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:00,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712556318] [2024-10-31 22:07:00,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:00,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:00,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:00,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712556318] [2024-10-31 22:07:00,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712556318] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:07:00,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794449043] [2024-10-31 22:07:00,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:00,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:07:00,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:00,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:07:00,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:07:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:00,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:07:00,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:07:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:01,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:07:01,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:01,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794449043] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:07:01,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:07:01,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2024-10-31 22:07:01,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844141702] [2024-10-31 22:07:01,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:07:01,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:07:01,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:01,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:07:01,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:07:01,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 28 [2024-10-31 22:07:01,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 335 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 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) [2024-10-31 22:07:01,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:07:01,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 28 [2024-10-31 22:07:01,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:07:01,718 INFO L124 PetriNetUnfolderBase]: 418/789 cut-off events. [2024-10-31 22:07:01,719 INFO L125 PetriNetUnfolderBase]: For 2153/2153 co-relation queries the response was YES. [2024-10-31 22:07:01,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2945 conditions, 789 events. 418/789 cut-off events. For 2153/2153 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3397 event pairs, 23 based on Foata normal form. 24/751 useless extension candidates. Maximal degree in co-relation 1141. Up to 221 conditions per place. [2024-10-31 22:07:01,726 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 100 selfloop transitions, 24 changer transitions 0/131 dead transitions. [2024-10-31 22:07:01,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 131 transitions, 1146 flow [2024-10-31 22:07:01,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:07:01,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:07:01,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-10-31 22:07:01,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2024-10-31 22:07:01,728 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 335 flow. Second operand 9 states and 172 transitions. [2024-10-31 22:07:01,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 131 transitions, 1146 flow [2024-10-31 22:07:01,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 131 transitions, 1107 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-10-31 22:07:01,737 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 526 flow [2024-10-31 22:07:01,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=526, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-10-31 22:07:01,738 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 36 predicate places. [2024-10-31 22:07:01,738 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 526 flow [2024-10-31 22:07:01,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 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) [2024-10-31 22:07:01,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:07:01,739 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:01,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:07:01,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:07:01,940 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:07:01,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:01,940 INFO L85 PathProgramCache]: Analyzing trace with hash -709840238, now seen corresponding path program 2 times [2024-10-31 22:07:01,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:01,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505609104] [2024-10-31 22:07:01,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:01,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:02,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:02,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505609104] [2024-10-31 22:07:02,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505609104] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:02,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:02,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:07:02,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301054308] [2024-10-31 22:07:02,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:02,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:02,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:02,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:02,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:02,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-10-31 22:07:02,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 526 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-10-31 22:07:02,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:07:02,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-10-31 22:07:02,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:07:02,496 INFO L124 PetriNetUnfolderBase]: 744/1569 cut-off events. [2024-10-31 22:07:02,496 INFO L125 PetriNetUnfolderBase]: For 5781/5839 co-relation queries the response was YES. [2024-10-31 22:07:02,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6289 conditions, 1569 events. 744/1569 cut-off events. For 5781/5839 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 9112 event pairs, 222 based on Foata normal form. 24/1381 useless extension candidates. Maximal degree in co-relation 2814. Up to 380 conditions per place. [2024-10-31 22:07:02,518 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 67 selfloop transitions, 23 changer transitions 0/113 dead transitions. [2024-10-31 22:07:02,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 113 transitions, 1230 flow [2024-10-31 22:07:02,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:07:02,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:07:02,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-10-31 22:07:02,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7589285714285714 [2024-10-31 22:07:02,519 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 526 flow. Second operand 4 states and 85 transitions. [2024-10-31 22:07:02,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 113 transitions, 1230 flow [2024-10-31 22:07:02,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 113 transitions, 1204 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-31 22:07:02,539 INFO L231 Difference]: Finished difference. Result has 68 places, 82 transitions, 914 flow [2024-10-31 22:07:02,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=914, PETRI_PLACES=68, PETRI_TRANSITIONS=82} [2024-10-31 22:07:02,540 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 40 predicate places. [2024-10-31 22:07:02,540 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 82 transitions, 914 flow [2024-10-31 22:07:02,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-10-31 22:07:02,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:07:02,541 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:02,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:07:02,541 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:07:02,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:02,542 INFO L85 PathProgramCache]: Analyzing trace with hash -213020050, now seen corresponding path program 1 times [2024-10-31 22:07:02,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:02,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15271365] [2024-10-31 22:07:02,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:02,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:07,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:07,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15271365] [2024-10-31 22:07:07,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15271365] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:07:07,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800392059] [2024-10-31 22:07:07,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:07,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:07:07,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:07,708 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:07:07,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee02e2ab-92de-4e17-adbb-3e83c2b8faef/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:07:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:07,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:07:07,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:07:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:08,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:07:12,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:12,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800392059] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:07:12,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:07:12,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 17 [2024-10-31 22:07:12,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347009485] [2024-10-31 22:07:12,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:07:12,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-31 22:07:12,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:12,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-31 22:07:12,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=249, Unknown=1, NotChecked=0, Total=306 [2024-10-31 22:07:12,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 28 [2024-10-31 22:07:12,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 82 transitions, 914 flow. Second operand has 18 states, 18 states have (on average 11.666666666666666) internal successors, (210), 18 states have internal predecessors, (210), 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) [2024-10-31 22:07:12,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:07:12,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 28 [2024-10-31 22:07:12,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand