./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix026.oepc.i --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_afe8c649-6db4-4cee-96e5-33008e0dd492/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8c649-6db4-4cee-96e5-33008e0dd492/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_afe8c649-6db4-4cee-96e5-33008e0dd492/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8c649-6db4-4cee-96e5-33008e0dd492/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix026.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8c649-6db4-4cee-96e5-33008e0dd492/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_afe8c649-6db4-4cee-96e5-33008e0dd492/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 a107688f8a9743f96e4ba7fbbac745d7f444b48f461db6b6c74848593b202e05 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:12:43,350 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:12:43,437 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8c649-6db4-4cee-96e5-33008e0dd492/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:12:43,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:12:43,445 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:12:43,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:12:43,483 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:12:43,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:12:43,487 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:12:43,488 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:12:43,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:12:43,488 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:12:43,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:12:43,489 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:12:43,490 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:12:43,490 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:12:43,492 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:12:43,493 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:12:43,496 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:12:43,496 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:12:43,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:12:43,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:12:43,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:12:43,502 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:12:43,508 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:12:43,509 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:12:43,509 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:12:43,510 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:12:43,510 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:12:43,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:12:43,511 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:12:43,512 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:12:43,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:12:43,513 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:12:43,513 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:12:43,514 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:12:43,514 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:12:43,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:12:43,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:12:43,515 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:12:43,515 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:12:43,516 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:12:43,516 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_afe8c649-6db4-4cee-96e5-33008e0dd492/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8c649-6db4-4cee-96e5-33008e0dd492/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a107688f8a9743f96e4ba7fbbac745d7f444b48f461db6b6c74848593b202e05 [2024-10-31 22:12:43,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:12:43,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:12:43,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:12:43,819 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:12:43,820 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:12:43,821 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8c649-6db4-4cee-96e5-33008e0dd492/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-wmm/mix026.oepc.i Unable to find full path for "g++" [2024-10-31 22:12:46,049 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:12:46,422 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:12:46,424 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8c649-6db4-4cee-96e5-33008e0dd492/sv-benchmarks/c/pthread-wmm/mix026.oepc.i [2024-10-31 22:12:46,469 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8c649-6db4-4cee-96e5-33008e0dd492/bin/uautomizer-verify-4GaUIPS5ZU/data/8f90901c1/e569f6f940c744038217162352764f5c/FLAG230132bfd [2024-10-31 22:12:46,626 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8c649-6db4-4cee-96e5-33008e0dd492/bin/uautomizer-verify-4GaUIPS5ZU/data/8f90901c1/e569f6f940c744038217162352764f5c [2024-10-31 22:12:46,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:12:46,630 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:12:46,631 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:12:46,631 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:12:46,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:12:46,637 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:12:46" (1/1) ... [2024-10-31 22:12:46,638 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6900faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:46, skipping insertion in model container [2024-10-31 22:12:46,638 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:12:46" (1/1) ... [2024-10-31 22:12:46,729 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:12:47,008 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_afe8c649-6db4-4cee-96e5-33008e0dd492/sv-benchmarks/c/pthread-wmm/mix026.oepc.i[945,958] [2024-10-31 22:12:47,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:12:47,366 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:12:47,382 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_afe8c649-6db4-4cee-96e5-33008e0dd492/sv-benchmarks/c/pthread-wmm/mix026.oepc.i[945,958] [2024-10-31 22:12:47,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:12:47,531 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:12:47,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:47 WrapperNode [2024-10-31 22:12:47,532 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:12:47,534 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:12:47,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:12:47,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:12:47,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:47" (1/1) ... [2024-10-31 22:12:47,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:47" (1/1) ... [2024-10-31 22:12:47,610 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 128 [2024-10-31 22:12:47,614 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:12:47,615 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:12:47,615 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:12:47,615 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:12:47,631 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:47" (1/1) ... [2024-10-31 22:12:47,632 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:47" (1/1) ... [2024-10-31 22:12:47,644 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:47" (1/1) ... [2024-10-31 22:12:47,675 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 22:12:47,677 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:47" (1/1) ... [2024-10-31 22:12:47,679 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:47" (1/1) ... [2024-10-31 22:12:47,692 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:47" (1/1) ... [2024-10-31 22:12:47,697 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:47" (1/1) ... [2024-10-31 22:12:47,700 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:47" (1/1) ... [2024-10-31 22:12:47,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:47" (1/1) ... [2024-10-31 22:12:47,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:12:47,709 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:12:47,709 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:12:47,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:12:47,711 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:47" (1/1) ... [2024-10-31 22:12:47,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:12:47,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8c649-6db4-4cee-96e5-33008e0dd492/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:47,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8c649-6db4-4cee-96e5-33008e0dd492/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:47,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8c649-6db4-4cee-96e5-33008e0dd492/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:12:47,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:12:47,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:12:47,799 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-31 22:12:47,799 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-31 22:12:47,800 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-31 22:12:47,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-31 22:12:47,800 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-31 22:12:47,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-31 22:12:47,800 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-31 22:12:47,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-31 22:12:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:12:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:12:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:12:47,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:12:47,804 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 22:12:48,010 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:12:48,013 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:12:48,512 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:12:48,512 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:12:48,820 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:12:48,820 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:12:48,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:12:48 BoogieIcfgContainer [2024-10-31 22:12:48,821 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:12:48,825 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:12:48,826 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:12:48,832 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:12:48,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:12:46" (1/3) ... [2024-10-31 22:12:48,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdf73f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:12:48, skipping insertion in model container [2024-10-31 22:12:48,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:47" (2/3) ... [2024-10-31 22:12:48,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdf73f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:12:48, skipping insertion in model container [2024-10-31 22:12:48,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:12:48" (3/3) ... [2024-10-31 22:12:48,838 INFO L112 eAbstractionObserver]: Analyzing ICFG mix026.oepc.i [2024-10-31 22:12:48,863 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:12:48,864 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:12:48,864 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:12:48,946 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:12:48,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2024-10-31 22:12:49,053 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-10-31 22:12:49,054 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:12:49,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-10-31 22:12:49,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2024-10-31 22:12:49,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2024-10-31 22:12:49,086 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:12:49,097 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;@4e817764, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:12:49,098 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-31 22:12:49,105 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:12:49,105 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-10-31 22:12:49,105 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:12:49,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:49,106 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-31 22:12:49,107 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:12:49,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:49,113 INFO L85 PathProgramCache]: Analyzing trace with hash 11962132, now seen corresponding path program 1 times [2024-10-31 22:12:49,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:49,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932424672] [2024-10-31 22:12:49,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:49,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:49,697 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 22:12:49,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:49,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932424672] [2024-10-31 22:12:49,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932424672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:49,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:49,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:12:49,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204676079] [2024-10-31 22:12:49,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:49,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:12:49,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:49,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:12:49,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:12:49,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 49 [2024-10-31 22:12:49,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 22:12:49,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:49,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 49 [2024-10-31 22:12:49,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:51,066 INFO L124 PetriNetUnfolderBase]: 2495/4136 cut-off events. [2024-10-31 22:12:51,066 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-10-31 22:12:51,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7712 conditions, 4136 events. 2495/4136 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 28631 event pairs, 443 based on Foata normal form. 135/4196 useless extension candidates. Maximal degree in co-relation 7700. Up to 2779 conditions per place. [2024-10-31 22:12:51,106 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 37 selfloop transitions, 2 changer transitions 2/61 dead transitions. [2024-10-31 22:12:51,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 225 flow [2024-10-31 22:12:51,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:12:51,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:12:51,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-10-31 22:12:51,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7891156462585034 [2024-10-31 22:12:51,121 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 116 transitions. [2024-10-31 22:12:51,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 225 flow [2024-10-31 22:12:51,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:12:51,130 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2024-10-31 22:12:51,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-10-31 22:12:51,137 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2024-10-31 22:12:51,138 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2024-10-31 22:12:51,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 22:12:51,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:51,138 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:51,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:12:51,139 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:12:51,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:51,139 INFO L85 PathProgramCache]: Analyzing trace with hash 898115753, now seen corresponding path program 1 times [2024-10-31 22:12:51,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:51,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103236858] [2024-10-31 22:12:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:51,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:51,480 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 22:12:51,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:51,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103236858] [2024-10-31 22:12:51,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103236858] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:51,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:51,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:12:51,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473168308] [2024-10-31 22:12:51,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:51,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:12:51,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:51,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:12:51,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:12:51,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-10-31 22:12:51,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 22:12:51,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:51,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-10-31 22:12:51,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:53,808 INFO L124 PetriNetUnfolderBase]: 7779/12167 cut-off events. [2024-10-31 22:12:53,808 INFO L125 PetriNetUnfolderBase]: For 554/554 co-relation queries the response was YES. [2024-10-31 22:12:53,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23583 conditions, 12167 events. 7779/12167 cut-off events. For 554/554 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 86812 event pairs, 1033 based on Foata normal form. 400/12057 useless extension candidates. Maximal degree in co-relation 23573. Up to 5841 conditions per place. [2024-10-31 22:12:53,925 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 52 selfloop transitions, 6 changer transitions 1/74 dead transitions. [2024-10-31 22:12:53,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 74 transitions, 288 flow [2024-10-31 22:12:53,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:12:53,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:12:53,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-10-31 22:12:53,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6989795918367347 [2024-10-31 22:12:53,932 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 4 states and 137 transitions. [2024-10-31 22:12:53,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 74 transitions, 288 flow [2024-10-31 22:12:53,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 74 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:12:53,939 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 134 flow [2024-10-31 22:12:53,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-10-31 22:12:53,941 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2024-10-31 22:12:53,941 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 134 flow [2024-10-31 22:12:53,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 22:12:53,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:53,942 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 22:12:53,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:12:53,944 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:12:53,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:53,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2062269273, now seen corresponding path program 1 times [2024-10-31 22:12:53,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:53,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654568433] [2024-10-31 22:12:53,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:53,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:54,444 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 22:12:54,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:54,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654568433] [2024-10-31 22:12:54,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654568433] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:54,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:54,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:12:54,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35403868] [2024-10-31 22:12:54,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:54,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:12:54,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:54,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:12:54,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:12:54,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-10-31 22:12:54,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 22:12:54,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:54,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-10-31 22:12:54,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:56,425 INFO L124 PetriNetUnfolderBase]: 6075/9467 cut-off events. [2024-10-31 22:12:56,426 INFO L125 PetriNetUnfolderBase]: For 2276/2276 co-relation queries the response was YES. [2024-10-31 22:12:56,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21251 conditions, 9467 events. 6075/9467 cut-off events. For 2276/2276 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 63468 event pairs, 451 based on Foata normal form. 364/9459 useless extension candidates. Maximal degree in co-relation 21239. Up to 3681 conditions per place. [2024-10-31 22:12:56,504 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 67 selfloop transitions, 10 changer transitions 1/93 dead transitions. [2024-10-31 22:12:56,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 413 flow [2024-10-31 22:12:56,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:12:56,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:12:56,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-10-31 22:12:56,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-10-31 22:12:56,507 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 134 flow. Second operand 5 states and 175 transitions. [2024-10-31 22:12:56,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 413 flow [2024-10-31 22:12:56,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 93 transitions, 402 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-31 22:12:56,512 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 186 flow [2024-10-31 22:12:56,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-10-31 22:12:56,514 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2024-10-31 22:12:56,514 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 186 flow [2024-10-31 22:12:56,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 22:12:56,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:56,515 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, 1, 1, 1, 1, 1] [2024-10-31 22:12:56,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:12:56,515 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:12:56,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:56,516 INFO L85 PathProgramCache]: Analyzing trace with hash -670886232, now seen corresponding path program 1 times [2024-10-31 22:12:56,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:56,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941267030] [2024-10-31 22:12:56,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:56,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:56,912 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 22:12:56,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:56,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941267030] [2024-10-31 22:12:56,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941267030] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:56,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:56,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:12:56,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233347309] [2024-10-31 22:12:56,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:56,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:12:56,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:56,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:12:56,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:12:56,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-10-31 22:12:56,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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 22:12:56,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:56,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-10-31 22:12:56,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:58,364 INFO L124 PetriNetUnfolderBase]: 4027/6115 cut-off events. [2024-10-31 22:12:58,364 INFO L125 PetriNetUnfolderBase]: For 4654/4654 co-relation queries the response was YES. [2024-10-31 22:12:58,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15565 conditions, 6115 events. 4027/6115 cut-off events. For 4654/4654 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 35695 event pairs, 289 based on Foata normal form. 244/6140 useless extension candidates. Maximal degree in co-relation 15551. Up to 1788 conditions per place. [2024-10-31 22:12:58,412 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 80 selfloop transitions, 14 changer transitions 1/110 dead transitions. [2024-10-31 22:12:58,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 110 transitions, 544 flow [2024-10-31 22:12:58,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:12:58,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:12:58,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-10-31 22:12:58,415 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.717687074829932 [2024-10-31 22:12:58,415 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 186 flow. Second operand 6 states and 211 transitions. [2024-10-31 22:12:58,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 110 transitions, 544 flow [2024-10-31 22:12:58,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 110 transitions, 514 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-31 22:12:58,444 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 236 flow [2024-10-31 22:12:58,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2024-10-31 22:12:58,445 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2024-10-31 22:12:58,446 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 236 flow [2024-10-31 22:12:58,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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 22:12:58,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:58,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:58,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:12:58,447 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:12:58,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:58,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1494674115, now seen corresponding path program 1 times [2024-10-31 22:12:58,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:58,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130149171] [2024-10-31 22:12:58,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:58,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:58,953 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 22:12:58,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:58,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130149171] [2024-10-31 22:12:58,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130149171] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:58,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:58,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:12:58,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122758769] [2024-10-31 22:12:58,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:58,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:12:58,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:58,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:12:58,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:12:58,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-10-31 22:12:58,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 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 22:12:58,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:58,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-10-31 22:12:58,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:59,887 INFO L124 PetriNetUnfolderBase]: 2863/4163 cut-off events. [2024-10-31 22:12:59,887 INFO L125 PetriNetUnfolderBase]: For 5022/5022 co-relation queries the response was YES. [2024-10-31 22:12:59,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11590 conditions, 4163 events. 2863/4163 cut-off events. For 5022/5022 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 21707 event pairs, 231 based on Foata normal form. 96/4120 useless extension candidates. Maximal degree in co-relation 11575. Up to 1316 conditions per place. [2024-10-31 22:12:59,925 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 71 selfloop transitions, 18 changer transitions 1/105 dead transitions. [2024-10-31 22:12:59,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 105 transitions, 534 flow [2024-10-31 22:12:59,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:12:59,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:12:59,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 225 transitions. [2024-10-31 22:12:59,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6559766763848397 [2024-10-31 22:12:59,927 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 236 flow. Second operand 7 states and 225 transitions. [2024-10-31 22:12:59,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 105 transitions, 534 flow [2024-10-31 22:12:59,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 105 transitions, 488 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-10-31 22:12:59,986 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 246 flow [2024-10-31 22:12:59,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=246, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2024-10-31 22:12:59,990 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2024-10-31 22:12:59,992 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 246 flow [2024-10-31 22:12:59,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 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 22:12:59,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:59,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:59,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:12:59,993 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:12:59,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:59,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1087284126, now seen corresponding path program 1 times [2024-10-31 22:12:59,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:59,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112690510] [2024-10-31 22:12:59,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:59,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:03,037 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 22:13:03,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:03,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112690510] [2024-10-31 22:13:03,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112690510] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:03,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:03,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:13:03,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910365495] [2024-10-31 22:13:03,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:03,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:13:03,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:03,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:13:03,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:13:03,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-10-31 22:13:03,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 246 flow. Second operand has 10 states, 10 states have (on average 24.0) internal successors, (240), 10 states have internal predecessors, (240), 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 22:13:03,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:03,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-10-31 22:13:03,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:04,284 INFO L124 PetriNetUnfolderBase]: 3094/5031 cut-off events. [2024-10-31 22:13:04,284 INFO L125 PetriNetUnfolderBase]: For 3253/3449 co-relation queries the response was YES. [2024-10-31 22:13:04,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12380 conditions, 5031 events. 3094/5031 cut-off events. For 3253/3449 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 32412 event pairs, 881 based on Foata normal form. 16/4720 useless extension candidates. Maximal degree in co-relation 12364. Up to 1279 conditions per place. [2024-10-31 22:13:04,334 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 73 selfloop transitions, 5 changer transitions 12/120 dead transitions. [2024-10-31 22:13:04,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 120 transitions, 594 flow [2024-10-31 22:13:04,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:13:04,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:13:04,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2024-10-31 22:13:04,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6811224489795918 [2024-10-31 22:13:04,336 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 246 flow. Second operand 8 states and 267 transitions. [2024-10-31 22:13:04,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 120 transitions, 594 flow [2024-10-31 22:13:04,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 120 transitions, 478 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-10-31 22:13:04,392 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 184 flow [2024-10-31 22:13:04,393 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=184, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-10-31 22:13:04,394 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 11 predicate places. [2024-10-31 22:13:04,395 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 184 flow [2024-10-31 22:13:04,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.0) internal successors, (240), 10 states have internal predecessors, (240), 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 22:13:04,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:04,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:04,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:13:04,396 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:13:04,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:04,397 INFO L85 PathProgramCache]: Analyzing trace with hash 732044412, now seen corresponding path program 2 times [2024-10-31 22:13:04,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:04,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301969200] [2024-10-31 22:13:04,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:04,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:04,936 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 22:13:04,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:04,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301969200] [2024-10-31 22:13:04,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301969200] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:04,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:04,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:13:04,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992854284] [2024-10-31 22:13:04,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:04,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:13:04,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:04,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:13:04,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:13:04,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 49 [2024-10-31 22:13:04,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 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 22:13:04,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:04,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 49 [2024-10-31 22:13:04,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:06,703 INFO L124 PetriNetUnfolderBase]: 6443/10426 cut-off events. [2024-10-31 22:13:06,703 INFO L125 PetriNetUnfolderBase]: For 1680/1680 co-relation queries the response was YES. [2024-10-31 22:13:06,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22675 conditions, 10426 events. 6443/10426 cut-off events. For 1680/1680 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 76434 event pairs, 1731 based on Foata normal form. 32/9717 useless extension candidates. Maximal degree in co-relation 22659. Up to 4223 conditions per place. [2024-10-31 22:13:06,771 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 56 selfloop transitions, 2 changer transitions 15/101 dead transitions. [2024-10-31 22:13:06,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 101 transitions, 460 flow [2024-10-31 22:13:06,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:13:06,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:13:06,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-10-31 22:13:06,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6360544217687075 [2024-10-31 22:13:06,773 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 184 flow. Second operand 6 states and 187 transitions. [2024-10-31 22:13:06,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 101 transitions, 460 flow [2024-10-31 22:13:06,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 101 transitions, 448 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-10-31 22:13:06,782 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 187 flow [2024-10-31 22:13:06,782 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2024-10-31 22:13:06,783 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2024-10-31 22:13:06,783 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 187 flow [2024-10-31 22:13:06,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 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 22:13:06,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:06,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:06,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:13:06,784 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:13:06,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:06,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1281866544, now seen corresponding path program 3 times [2024-10-31 22:13:06,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:06,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003445097] [2024-10-31 22:13:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:06,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:07,284 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 22:13:07,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:07,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003445097] [2024-10-31 22:13:07,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003445097] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:07,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:07,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:13:07,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800697334] [2024-10-31 22:13:07,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:07,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:13:07,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:07,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:13:07,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:13:07,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-10-31 22:13:07,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 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 22:13:07,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:07,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-10-31 22:13:07,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:13:11,932 INFO L124 PetriNetUnfolderBase]: 18523/28565 cut-off events. [2024-10-31 22:13:11,932 INFO L125 PetriNetUnfolderBase]: For 6681/6681 co-relation queries the response was YES. [2024-10-31 22:13:12,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64084 conditions, 28565 events. 18523/28565 cut-off events. For 6681/6681 co-relation queries the response was YES. Maximal size of possible extension queue 1489. Compared 212619 event pairs, 2391 based on Foata normal form. 32/27557 useless extension candidates. Maximal degree in co-relation 64067. Up to 11485 conditions per place. [2024-10-31 22:13:12,050 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 63 selfloop transitions, 11 changer transitions 23/121 dead transitions. [2024-10-31 22:13:12,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 121 transitions, 573 flow [2024-10-31 22:13:12,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:13:12,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:13:12,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-10-31 22:13:12,052 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5830903790087464 [2024-10-31 22:13:12,052 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 187 flow. Second operand 7 states and 200 transitions. [2024-10-31 22:13:12,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 121 transitions, 573 flow [2024-10-31 22:13:12,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 121 transitions, 562 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-31 22:13:12,072 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 262 flow [2024-10-31 22:13:12,073 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=262, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2024-10-31 22:13:12,073 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2024-10-31 22:13:12,073 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 262 flow [2024-10-31 22:13:12,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 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 22:13:12,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:13:12,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:12,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:13:12,075 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:13:12,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:12,075 INFO L85 PathProgramCache]: Analyzing trace with hash 684928074, now seen corresponding path program 4 times [2024-10-31 22:13:12,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:12,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014966363] [2024-10-31 22:13:12,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:12,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:12,523 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 22:13:12,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:12,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014966363] [2024-10-31 22:13:12,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014966363] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:12,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:12,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:13:12,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063392575] [2024-10-31 22:13:12,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:12,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:13:12,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:12,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:13:12,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:13:12,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-10-31 22:13:12,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 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 22:13:12,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:12,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-10-31 22:13:12,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand