./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC --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 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:51:13,305 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:51:13,383 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:51:13,390 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:51:13,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:51:13,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:51:13,422 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:51:13,422 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:51:13,422 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:51:13,423 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:51:13,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:51:13,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:51:13,423 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:51:13,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:51:13,424 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:51:13,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:51:13,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:51:13,424 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:51:13,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:51:13,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:51:13,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:51:13,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:51:13,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:51:13,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:51:13,426 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:51:13,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:51:13,426 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:51:13,426 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:51:13,426 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:51:13,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:51:13,427 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:51:13,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:51:13,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:51:13,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:51:13,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:51:13,428 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:51:13,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:51:13,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:51:13,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:51:13,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:51:13,429 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:51:13,429 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:51:13,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:51:13,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:51:13,429 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:51:13,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:51:13,430 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:51:13,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:51:13,430 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC 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 -> 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 [2024-11-24 00:51:13,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:51:13,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:51:13,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:51:13,830 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:51:13,831 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:51:13,834 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2024-11-24 00:51:17,085 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/data/fc98385be/2c6ae1ee6067444499a590d621108de1/FLAG30c9fc5f9 [2024-11-24 00:51:17,453 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:51:17,455 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2024-11-24 00:51:17,467 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/data/fc98385be/2c6ae1ee6067444499a590d621108de1/FLAG30c9fc5f9 [2024-11-24 00:51:17,496 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/data/fc98385be/2c6ae1ee6067444499a590d621108de1 [2024-11-24 00:51:17,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:51:17,504 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:51:17,506 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:51:17,506 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:51:17,513 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:51:17,514 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:51:17" (1/1) ... [2024-11-24 00:51:17,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21491120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:17, skipping insertion in model container [2024-11-24 00:51:17,517 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:51:17" (1/1) ... [2024-11-24 00:51:17,541 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:51:17,795 WARN L250 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_4369774f-6ad5-4138-a4d0-6268bda7cf39/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c[2625,2638] [2024-11-24 00:51:17,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:51:17,831 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:51:17,869 WARN L250 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_4369774f-6ad5-4138-a4d0-6268bda7cf39/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c[2625,2638] [2024-11-24 00:51:17,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:51:17,895 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:51:17,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:17 WrapperNode [2024-11-24 00:51:17,896 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:51:17,898 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:51:17,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:51:17,898 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:51:17,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:17" (1/1) ... [2024-11-24 00:51:17,917 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:17" (1/1) ... [2024-11-24 00:51:17,947 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 86 [2024-11-24 00:51:17,947 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:51:17,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:51:17,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:51:17,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:51:17,960 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:17" (1/1) ... [2024-11-24 00:51:17,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:17" (1/1) ... [2024-11-24 00:51:17,968 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:17" (1/1) ... [2024-11-24 00:51:17,999 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-24 00:51:18,004 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:17" (1/1) ... [2024-11-24 00:51:18,004 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:17" (1/1) ... [2024-11-24 00:51:18,014 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:17" (1/1) ... [2024-11-24 00:51:18,018 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:17" (1/1) ... [2024-11-24 00:51:18,024 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:17" (1/1) ... [2024-11-24 00:51:18,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:17" (1/1) ... [2024-11-24 00:51:18,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:17" (1/1) ... [2024-11-24 00:51:18,035 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:51:18,036 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:51:18,036 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:51:18,036 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:51:18,037 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:17" (1/1) ... [2024-11-24 00:51:18,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:51:18,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:51:18,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:51:18,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:51:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:51:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-24 00:51:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-24 00:51:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-24 00:51:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-24 00:51:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-24 00:51:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-24 00:51:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:51:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:51:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:51:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:51:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-24 00:51:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-24 00:51:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 00:51:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:51:18,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:51:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:51:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:51:18,124 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 00:51:18,273 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:51:18,275 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:51:18,683 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 00:51:18,684 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:51:18,956 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:51:18,956 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-24 00:51:18,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:51:18 BoogieIcfgContainer [2024-11-24 00:51:18,957 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:51:18,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:51:18,959 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:51:18,966 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:51:18,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:51:17" (1/3) ... [2024-11-24 00:51:18,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e210fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:51:18, skipping insertion in model container [2024-11-24 00:51:18,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:17" (2/3) ... [2024-11-24 00:51:18,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e210fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:51:18, skipping insertion in model container [2024-11-24 00:51:18,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:51:18" (3/3) ... [2024-11-24 00:51:18,969 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2024-11-24 00:51:18,987 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:51:18,989 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-max-array-hom.wvr.c that has 4 procedures, 30 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-24 00:51:18,989 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 00:51:19,090 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-24 00:51:19,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 87 flow [2024-11-24 00:51:19,195 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-24 00:51:19,199 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-24 00:51:19,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 4/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-11-24 00:51:19,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 87 flow [2024-11-24 00:51:19,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 29 transitions, 76 flow [2024-11-24 00:51:19,224 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:51:19,242 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;@1b2c9d36, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:51:19,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-24 00:51:19,269 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 00:51:19,269 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-24 00:51:19,269 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-24 00:51:19,272 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:51:19,274 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:51:19,274 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:51:19,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:19,282 INFO L85 PathProgramCache]: Analyzing trace with hash -212175932, now seen corresponding path program 1 times [2024-11-24 00:51:19,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:19,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955670509] [2024-11-24 00:51:19,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:19,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:20,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:51:20,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:20,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955670509] [2024-11-24 00:51:20,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955670509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:51:20,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:51:20,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:51:20,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080229465] [2024-11-24 00:51:20,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:51:20,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:51:20,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:20,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:51:20,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:51:20,297 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-24 00:51:20,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-24 00:51:20,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:51:20,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-24 00:51:20,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:51:20,716 INFO L124 PetriNetUnfolderBase]: 617/947 cut-off events. [2024-11-24 00:51:20,716 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-24 00:51:20,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1942 conditions, 947 events. 617/947 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3765 event pairs, 126 based on Foata normal form. 1/934 useless extension candidates. Maximal degree in co-relation 1708. Up to 677 conditions per place. [2024-11-24 00:51:20,727 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 37 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2024-11-24 00:51:20,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 209 flow [2024-11-24 00:51:20,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:51:20,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:51:20,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-11-24 00:51:20,743 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-11-24 00:51:20,745 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 76 flow. Second operand 3 states and 64 transitions. [2024-11-24 00:51:20,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 209 flow [2024-11-24 00:51:20,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-24 00:51:20,756 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 90 flow [2024-11-24 00:51:20,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2024-11-24 00:51:20,764 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2024-11-24 00:51:20,764 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 90 flow [2024-11-24 00:51:20,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-24 00:51:20,765 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:51:20,765 INFO L206 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] [2024-11-24 00:51:20,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:51:20,766 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:51:20,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:20,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1399592055, now seen corresponding path program 1 times [2024-11-24 00:51:20,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:20,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432398817] [2024-11-24 00:51:20,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:20,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:51:20,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:20,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432398817] [2024-11-24 00:51:20,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432398817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:51:20,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:51:20,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:51:20,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791423934] [2024-11-24 00:51:20,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:51:20,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:51:20,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:20,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:51:20,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:51:20,990 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-24 00:51:20,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-24 00:51:20,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:51:20,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-24 00:51:20,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:51:21,261 INFO L124 PetriNetUnfolderBase]: 617/943 cut-off events. [2024-11-24 00:51:21,264 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-11-24 00:51:21,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 943 events. 617/943 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3833 event pairs, 407 based on Foata normal form. 0/913 useless extension candidates. Maximal degree in co-relation 802. Up to 895 conditions per place. [2024-11-24 00:51:21,276 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 27 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-11-24 00:51:21,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 150 flow [2024-11-24 00:51:21,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:51:21,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:51:21,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-11-24 00:51:21,278 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-11-24 00:51:21,278 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 90 flow. Second operand 3 states and 48 transitions. [2024-11-24 00:51:21,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 150 flow [2024-11-24 00:51:21,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:51:21,283 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 98 flow [2024-11-24 00:51:21,284 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2024-11-24 00:51:21,285 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-11-24 00:51:21,286 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 98 flow [2024-11-24 00:51:21,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-24 00:51:21,286 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:51:21,287 INFO L206 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] [2024-11-24 00:51:21,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:51:21,287 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:51:21,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:21,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1274343495, now seen corresponding path program 1 times [2024-11-24 00:51:21,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:21,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420787588] [2024-11-24 00:51:21,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:21,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:51:21,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:21,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420787588] [2024-11-24 00:51:21,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420787588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:51:21,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:51:21,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:51:21,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135230328] [2024-11-24 00:51:21,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:51:21,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:51:21,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:21,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:51:21,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:51:21,525 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-24 00:51:21,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-11-24 00:51:21,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:51:21,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-24 00:51:21,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:51:21,917 INFO L124 PetriNetUnfolderBase]: 790/1159 cut-off events. [2024-11-24 00:51:21,918 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2024-11-24 00:51:21,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2573 conditions, 1159 events. 790/1159 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4602 event pairs, 246 based on Foata normal form. 0/1114 useless extension candidates. Maximal degree in co-relation 2560. Up to 576 conditions per place. [2024-11-24 00:51:21,930 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 40 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-11-24 00:51:21,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 47 transitions, 224 flow [2024-11-24 00:51:21,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:51:21,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:51:21,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-24 00:51:21,934 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-11-24 00:51:21,934 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 98 flow. Second operand 4 states and 63 transitions. [2024-11-24 00:51:21,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 47 transitions, 224 flow [2024-11-24 00:51:21,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 218 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-24 00:51:21,938 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 113 flow [2024-11-24 00:51:21,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-24 00:51:21,942 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-11-24 00:51:21,942 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 113 flow [2024-11-24 00:51:21,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-11-24 00:51:21,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:51:21,943 INFO L206 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] [2024-11-24 00:51:21,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:51:21,943 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:51:21,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:21,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1132907319, now seen corresponding path program 1 times [2024-11-24 00:51:21,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:21,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657539712] [2024-11-24 00:51:21,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:21,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:51:22,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:22,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657539712] [2024-11-24 00:51:22,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657539712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:51:22,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647384053] [2024-11-24 00:51:22,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:22,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:51:22,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:51:22,172 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:51:22,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:51:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:22,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:51:22,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:51:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:51:22,410 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:51:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:51:22,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647384053] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:51:22,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:51:22,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-24 00:51:22,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871114108] [2024-11-24 00:51:22,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:51:22,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:51:22,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:22,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:51:22,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:51:22,495 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-24 00:51:22,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-24 00:51:22,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:51:22,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-24 00:51:22,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:51:22,850 INFO L124 PetriNetUnfolderBase]: 850/1295 cut-off events. [2024-11-24 00:51:22,850 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2024-11-24 00:51:22,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3227 conditions, 1295 events. 850/1295 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5464 event pairs, 256 based on Foata normal form. 0/1243 useless extension candidates. Maximal degree in co-relation 3207. Up to 670 conditions per place. [2024-11-24 00:51:22,863 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 41 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2024-11-24 00:51:22,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 257 flow [2024-11-24 00:51:22,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:51:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 00:51:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-11-24 00:51:22,865 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-11-24 00:51:22,865 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 113 flow. Second operand 5 states and 72 transitions. [2024-11-24 00:51:22,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 257 flow [2024-11-24 00:51:22,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 00:51:22,870 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 132 flow [2024-11-24 00:51:22,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-11-24 00:51:22,871 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2024-11-24 00:51:22,871 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 132 flow [2024-11-24 00:51:22,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-24 00:51:22,871 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:51:22,871 INFO L206 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] [2024-11-24 00:51:22,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:51:23,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:51:23,072 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:51:23,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:23,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1269434354, now seen corresponding path program 1 times [2024-11-24 00:51:23,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:23,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755215233] [2024-11-24 00:51:23,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:23,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:24,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:51:24,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:24,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755215233] [2024-11-24 00:51:24,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755215233] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:51:24,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978242152] [2024-11-24 00:51:24,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:24,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:51:24,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:51:24,736 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:51:24,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:51:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:24,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-24 00:51:24,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:51:24,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:51:25,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-11-24 00:51:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:51:25,700 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:51:29,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 225 treesize of output 207 [2024-11-24 00:51:29,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:51:29,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 260 treesize of output 290 [2024-11-24 00:52:15,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 294 treesize of output 264 [2024-11-24 00:52:15,216 INFO L349 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2024-11-24 00:52:15,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 387 treesize of output 1 [2024-11-24 00:52:15,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:52:15,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978242152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:52:15,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:52:15,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2024-11-24 00:52:15,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269214480] [2024-11-24 00:52:15,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:52:15,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-24 00:52:15,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:52:15,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-24 00:52:15,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2024-11-24 00:52:15,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-24 00:52:15,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 132 flow. Second operand has 24 states, 24 states have (on average 8.708333333333334) internal successors, (209), 24 states have internal predecessors, (209), 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) [2024-11-24 00:52:15,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:52:15,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-24 00:52:15,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:52:19,406 INFO L124 PetriNetUnfolderBase]: 1841/2767 cut-off events. [2024-11-24 00:52:19,406 INFO L125 PetriNetUnfolderBase]: For 1740/1740 co-relation queries the response was YES. [2024-11-24 00:52:19,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7675 conditions, 2767 events. 1841/2767 cut-off events. For 1740/1740 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 12775 event pairs, 98 based on Foata normal form. 1/2767 useless extension candidates. Maximal degree in co-relation 5619. Up to 1375 conditions per place. [2024-11-24 00:52:19,429 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 137 selfloop transitions, 57 changer transitions 1/199 dead transitions. [2024-11-24 00:52:19,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 199 transitions, 1067 flow [2024-11-24 00:52:19,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 00:52:19,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-24 00:52:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 321 transitions. [2024-11-24 00:52:19,433 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2024-11-24 00:52:19,433 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 132 flow. Second operand 21 states and 321 transitions. [2024-11-24 00:52:19,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 199 transitions, 1067 flow [2024-11-24 00:52:19,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 199 transitions, 1050 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-24 00:52:19,442 INFO L231 Difference]: Finished difference. Result has 64 places, 91 transitions, 543 flow [2024-11-24 00:52:19,442 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=543, PETRI_PLACES=64, PETRI_TRANSITIONS=91} [2024-11-24 00:52:19,443 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2024-11-24 00:52:19,443 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 91 transitions, 543 flow [2024-11-24 00:52:19,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.708333333333334) internal successors, (209), 24 states have internal predecessors, (209), 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) [2024-11-24 00:52:19,443 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:52:19,444 INFO L206 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] [2024-11-24 00:52:19,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:52:19,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:52:19,648 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:52:19,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:52:19,649 INFO L85 PathProgramCache]: Analyzing trace with hash -78465058, now seen corresponding path program 2 times [2024-11-24 00:52:19,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:52:19,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774127585] [2024-11-24 00:52:19,649 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:52:19,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:52:19,705 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:52:19,705 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:52:20,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:52:20,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:52:20,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774127585] [2024-11-24 00:52:20,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774127585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:52:20,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504282606] [2024-11-24 00:52:20,595 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:52:20,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:52:20,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:52:20,599 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:52:20,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:52:20,697 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:52:20,697 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:52:20,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 00:52:20,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:52:20,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:52:21,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 30 [2024-11-24 00:52:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:52:21,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:52:23,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 225 treesize of output 207 [2024-11-24 00:52:23,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:52:23,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 260 treesize of output 290 [2024-11-24 00:52:58,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 294 treesize of output 264 [2024-11-24 00:52:58,497 INFO L349 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2024-11-24 00:52:58,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 387 treesize of output 1 [2024-11-24 00:52:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:52:58,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504282606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:52:58,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:52:58,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2024-11-24 00:52:58,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061718128] [2024-11-24 00:52:58,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:52:58,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 00:52:58,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:52:58,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 00:52:58,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:52:58,791 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-24 00:52:58,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 91 transitions, 543 flow. Second operand has 21 states, 21 states have (on average 10.095238095238095) internal successors, (212), 21 states have internal predecessors, (212), 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) [2024-11-24 00:52:58,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:52:58,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-24 00:52:58,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:53:01,862 INFO L124 PetriNetUnfolderBase]: 2050/3323 cut-off events. [2024-11-24 00:53:01,862 INFO L125 PetriNetUnfolderBase]: For 4736/4736 co-relation queries the response was YES. [2024-11-24 00:53:01,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10790 conditions, 3323 events. 2050/3323 cut-off events. For 4736/4736 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 17848 event pairs, 78 based on Foata normal form. 3/3322 useless extension candidates. Maximal degree in co-relation 10228. Up to 1815 conditions per place. [2024-11-24 00:53:01,890 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 193 selfloop transitions, 121 changer transitions 2/322 dead transitions. [2024-11-24 00:53:01,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 322 transitions, 2167 flow [2024-11-24 00:53:01,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-24 00:53:01,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-24 00:53:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 474 transitions. [2024-11-24 00:53:01,893 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4633431085043988 [2024-11-24 00:53:01,893 INFO L175 Difference]: Start difference. First operand has 64 places, 91 transitions, 543 flow. Second operand 31 states and 474 transitions. [2024-11-24 00:53:01,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 322 transitions, 2167 flow [2024-11-24 00:53:01,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 322 transitions, 1959 flow, removed 77 selfloop flow, removed 3 redundant places. [2024-11-24 00:53:01,923 INFO L231 Difference]: Finished difference. Result has 105 places, 182 transitions, 1307 flow [2024-11-24 00:53:01,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1307, PETRI_PLACES=105, PETRI_TRANSITIONS=182} [2024-11-24 00:53:01,924 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2024-11-24 00:53:01,926 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 182 transitions, 1307 flow [2024-11-24 00:53:01,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.095238095238095) internal successors, (212), 21 states have internal predecessors, (212), 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) [2024-11-24 00:53:01,926 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:53:01,926 INFO L206 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] [2024-11-24 00:53:01,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:53:02,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-24 00:53:02,131 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:53:02,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:02,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1445894150, now seen corresponding path program 3 times [2024-11-24 00:53:02,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:02,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668141069] [2024-11-24 00:53:02,132 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:53:02,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:02,174 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-24 00:53:02,177 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:53:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:53:02,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:02,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668141069] [2024-11-24 00:53:02,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668141069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:02,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268451807] [2024-11-24 00:53:02,973 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:53:02,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:02,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:02,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:02,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:53:03,072 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-24 00:53:03,072 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:53:03,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 00:53:03,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:03,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:53:03,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-11-24 00:53:03,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:53:03,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:53:05,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 166 [2024-11-24 00:53:05,981 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:53:05,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 218 [2024-11-24 00:53:12,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 96 [2024-11-24 00:53:12,842 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-24 00:53:12,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 115 [2024-11-24 00:53:13,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 205 [2024-11-24 00:53:13,291 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-24 00:53:13,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 311 treesize of output 1 [2024-11-24 00:53:13,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:53:13,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268451807] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:53:13,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:53:13,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 22 [2024-11-24 00:53:13,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697715854] [2024-11-24 00:53:13,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:53:13,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-24 00:53:13,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:13,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-24 00:53:13,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2024-11-24 00:53:13,674 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-24 00:53:13,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 182 transitions, 1307 flow. Second operand has 23 states, 23 states have (on average 9.826086956521738) internal successors, (226), 23 states have internal predecessors, (226), 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) [2024-11-24 00:53:13,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:53:13,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-24 00:53:13,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:53:18,075 INFO L124 PetriNetUnfolderBase]: 3836/6207 cut-off events. [2024-11-24 00:53:18,075 INFO L125 PetriNetUnfolderBase]: For 16871/16883 co-relation queries the response was YES. [2024-11-24 00:53:18,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23989 conditions, 6207 events. 3836/6207 cut-off events. For 16871/16883 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 37764 event pairs, 265 based on Foata normal form. 14/6219 useless extension candidates. Maximal degree in co-relation 22851. Up to 2782 conditions per place. [2024-11-24 00:53:18,129 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 233 selfloop transitions, 247 changer transitions 2/488 dead transitions. [2024-11-24 00:53:18,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 488 transitions, 4097 flow [2024-11-24 00:53:18,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-24 00:53:18,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-24 00:53:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 523 transitions. [2024-11-24 00:53:18,133 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4661319073083779 [2024-11-24 00:53:18,133 INFO L175 Difference]: Start difference. First operand has 105 places, 182 transitions, 1307 flow. Second operand 34 states and 523 transitions. [2024-11-24 00:53:18,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 488 transitions, 4097 flow [2024-11-24 00:53:18,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 488 transitions, 3910 flow, removed 91 selfloop flow, removed 2 redundant places. [2024-11-24 00:53:18,210 INFO L231 Difference]: Finished difference. Result has 148 places, 329 transitions, 3031 flow [2024-11-24 00:53:18,211 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3031, PETRI_PLACES=148, PETRI_TRANSITIONS=329} [2024-11-24 00:53:18,211 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 113 predicate places. [2024-11-24 00:53:18,211 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 329 transitions, 3031 flow [2024-11-24 00:53:18,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.826086956521738) internal successors, (226), 23 states have internal predecessors, (226), 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) [2024-11-24 00:53:18,212 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:53:18,212 INFO L206 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] [2024-11-24 00:53:18,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 00:53:18,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-24 00:53:18,416 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:53:18,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:18,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1443890016, now seen corresponding path program 4 times [2024-11-24 00:53:18,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:18,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986738066] [2024-11-24 00:53:18,417 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:53:18,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:18,448 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:53:18,448 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:53:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:53:19,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:19,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986738066] [2024-11-24 00:53:19,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986738066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:19,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531166764] [2024-11-24 00:53:19,184 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:53:19,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:19,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:19,186 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:19,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:53:19,288 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:53:19,288 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:53:19,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 00:53:19,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:19,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:53:19,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-11-24 00:53:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:53:19,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:53:22,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 166 [2024-11-24 00:53:22,174 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:53:22,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 218 [2024-11-24 00:53:29,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 96 [2024-11-24 00:53:29,762 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-24 00:53:29,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 115 [2024-11-24 00:53:30,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 205 [2024-11-24 00:53:30,136 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-24 00:53:30,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 311 treesize of output 1 [2024-11-24 00:53:30,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:53:30,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531166764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:53:30,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:53:30,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 24 [2024-11-24 00:53:30,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939643240] [2024-11-24 00:53:30,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:53:30,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-24 00:53:30,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:30,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-24 00:53:30,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:53:30,402 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-24 00:53:30,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 329 transitions, 3031 flow. Second operand has 25 states, 25 states have (on average 8.76) internal successors, (219), 25 states have internal predecessors, (219), 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) [2024-11-24 00:53:30,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:53:30,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-24 00:53:30,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:53:34,846 INFO L124 PetriNetUnfolderBase]: 5690/9096 cut-off events. [2024-11-24 00:53:34,846 INFO L125 PetriNetUnfolderBase]: For 34139/34169 co-relation queries the response was YES. [2024-11-24 00:53:34,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38750 conditions, 9096 events. 5690/9096 cut-off events. For 34139/34169 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 58482 event pairs, 1178 based on Foata normal form. 14/9106 useless extension candidates. Maximal degree in co-relation 37094. Up to 6655 conditions per place. [2024-11-24 00:53:34,936 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 337 selfloop transitions, 152 changer transitions 1/495 dead transitions. [2024-11-24 00:53:34,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 495 transitions, 5106 flow [2024-11-24 00:53:34,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-24 00:53:34,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-24 00:53:34,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 370 transitions. [2024-11-24 00:53:34,940 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4152637485970819 [2024-11-24 00:53:34,940 INFO L175 Difference]: Start difference. First operand has 148 places, 329 transitions, 3031 flow. Second operand 27 states and 370 transitions. [2024-11-24 00:53:34,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 495 transitions, 5106 flow [2024-11-24 00:53:35,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 495 transitions, 4883 flow, removed 58 selfloop flow, removed 12 redundant places. [2024-11-24 00:53:35,182 INFO L231 Difference]: Finished difference. Result has 170 places, 396 transitions, 3931 flow [2024-11-24 00:53:35,182 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2823, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3931, PETRI_PLACES=170, PETRI_TRANSITIONS=396} [2024-11-24 00:53:35,183 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 135 predicate places. [2024-11-24 00:53:35,183 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 396 transitions, 3931 flow [2024-11-24 00:53:35,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.76) internal successors, (219), 25 states have internal predecessors, (219), 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) [2024-11-24 00:53:35,184 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:53:35,184 INFO L206 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] [2024-11-24 00:53:35,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-24 00:53:35,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:35,388 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:53:35,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:35,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1405024172, now seen corresponding path program 5 times [2024-11-24 00:53:35,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:35,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911939824] [2024-11-24 00:53:35,389 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:53:35,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:35,411 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:53:35,412 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:53:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:53:36,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:36,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911939824] [2024-11-24 00:53:36,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911939824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:36,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425473484] [2024-11-24 00:53:36,519 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:53:36,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:36,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:36,524 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:36,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:53:36,626 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:53:36,626 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:53:36,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-24 00:53:36,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:36,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:53:37,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-11-24 00:53:37,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:53:37,276 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:53:41,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 166 [2024-11-24 00:53:41,197 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:53:41,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 218 [2024-11-24 00:53:51,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 96 [2024-11-24 00:53:51,319 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-24 00:53:51,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 115 [2024-11-24 00:53:51,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 205 [2024-11-24 00:53:51,631 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-24 00:53:51,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 311 treesize of output 1 [2024-11-24 00:53:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:53:51,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425473484] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:53:51,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:53:51,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2024-11-24 00:53:51,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280285172] [2024-11-24 00:53:51,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:53:51,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-24 00:53:51,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:51,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-24 00:53:51,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2024-11-24 00:53:51,916 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-24 00:53:51,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 396 transitions, 3931 flow. Second operand has 29 states, 29 states have (on average 7.586206896551724) internal successors, (220), 29 states have internal predecessors, (220), 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) [2024-11-24 00:53:51,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:53:51,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-24 00:53:51,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:53:59,891 INFO L124 PetriNetUnfolderBase]: 9668/14013 cut-off events. [2024-11-24 00:53:59,891 INFO L125 PetriNetUnfolderBase]: For 57895/57895 co-relation queries the response was YES. [2024-11-24 00:53:59,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62771 conditions, 14013 events. 9668/14013 cut-off events. For 57895/57895 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 80476 event pairs, 1541 based on Foata normal form. 4/14014 useless extension candidates. Maximal degree in co-relation 60528. Up to 9479 conditions per place. [2024-11-24 00:54:00,023 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 438 selfloop transitions, 316 changer transitions 2/758 dead transitions. [2024-11-24 00:54:00,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 758 transitions, 8408 flow [2024-11-24 00:54:00,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-24 00:54:00,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-24 00:54:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 441 transitions. [2024-11-24 00:54:00,027 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-11-24 00:54:00,027 INFO L175 Difference]: Start difference. First operand has 170 places, 396 transitions, 3931 flow. Second operand 33 states and 441 transitions. [2024-11-24 00:54:00,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 758 transitions, 8408 flow [2024-11-24 00:54:00,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 758 transitions, 8024 flow, removed 164 selfloop flow, removed 6 redundant places. [2024-11-24 00:54:00,491 INFO L231 Difference]: Finished difference. Result has 206 places, 595 transitions, 6808 flow [2024-11-24 00:54:00,492 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3685, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=6808, PETRI_PLACES=206, PETRI_TRANSITIONS=595} [2024-11-24 00:54:00,493 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 171 predicate places. [2024-11-24 00:54:00,493 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 595 transitions, 6808 flow [2024-11-24 00:54:00,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.586206896551724) internal successors, (220), 29 states have internal predecessors, (220), 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) [2024-11-24 00:54:00,495 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:54:00,495 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:00,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:54:00,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:00,696 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:54:00,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:00,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1144773116, now seen corresponding path program 6 times [2024-11-24 00:54:00,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:00,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188665053] [2024-11-24 00:54:00,697 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 00:54:00,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:00,719 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-24 00:54:00,719 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:54:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 00:54:01,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:01,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188665053] [2024-11-24 00:54:01,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188665053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:01,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:01,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 00:54:01,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638317393] [2024-11-24 00:54:01,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:01,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:54:01,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:01,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:54:01,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:54:01,523 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-24 00:54:01,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 595 transitions, 6808 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 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) [2024-11-24 00:54:01,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:54:01,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-24 00:54:01,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:54:04,245 INFO L124 PetriNetUnfolderBase]: 7423/11495 cut-off events. [2024-11-24 00:54:04,245 INFO L125 PetriNetUnfolderBase]: For 68915/69019 co-relation queries the response was YES. [2024-11-24 00:54:04,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58882 conditions, 11495 events. 7423/11495 cut-off events. For 68915/69019 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 72344 event pairs, 1232 based on Foata normal form. 11/11502 useless extension candidates. Maximal degree in co-relation 58106. Up to 9462 conditions per place. [2024-11-24 00:54:04,356 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 533 selfloop transitions, 147 changer transitions 1/686 dead transitions. [2024-11-24 00:54:04,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 686 transitions, 8967 flow [2024-11-24 00:54:04,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:54:04,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-24 00:54:04,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-11-24 00:54:04,358 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49393939393939396 [2024-11-24 00:54:04,358 INFO L175 Difference]: Start difference. First operand has 206 places, 595 transitions, 6808 flow. Second operand 10 states and 163 transitions. [2024-11-24 00:54:04,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 686 transitions, 8967 flow [2024-11-24 00:54:04,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 686 transitions, 8549 flow, removed 187 selfloop flow, removed 6 redundant places. [2024-11-24 00:54:04,780 INFO L231 Difference]: Finished difference. Result has 213 places, 633 transitions, 7325 flow [2024-11-24 00:54:04,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6408, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7325, PETRI_PLACES=213, PETRI_TRANSITIONS=633} [2024-11-24 00:54:04,782 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 178 predicate places. [2024-11-24 00:54:04,782 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 633 transitions, 7325 flow [2024-11-24 00:54:04,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 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) [2024-11-24 00:54:04,782 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:54:04,782 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:04,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:54:04,782 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:54:04,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:04,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1641640998, now seen corresponding path program 7 times [2024-11-24 00:54:04,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:04,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46651382] [2024-11-24 00:54:04,784 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 00:54:04,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:04,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:04,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46651382] [2024-11-24 00:54:04,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46651382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:04,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228730029] [2024-11-24 00:54:04,934 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 00:54:04,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:04,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:04,937 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:04,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:54:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:05,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 00:54:05,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:05,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:05,170 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:54:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:05,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228730029] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:05,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:54:05,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2024-11-24 00:54:05,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087683655] [2024-11-24 00:54:05,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:05,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:54:05,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:05,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:54:05,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:54:05,286 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-24 00:54:05,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 633 transitions, 7325 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-11-24 00:54:05,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:54:05,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-24 00:54:05,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:54:08,585 INFO L124 PetriNetUnfolderBase]: 8354/12822 cut-off events. [2024-11-24 00:54:08,585 INFO L125 PetriNetUnfolderBase]: For 94247/94576 co-relation queries the response was YES. [2024-11-24 00:54:08,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67899 conditions, 12822 events. 8354/12822 cut-off events. For 94247/94576 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 82063 event pairs, 1668 based on Foata normal form. 321/13136 useless extension candidates. Maximal degree in co-relation 67802. Up to 4284 conditions per place. [2024-11-24 00:54:08,707 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 686 selfloop transitions, 79 changer transitions 0/770 dead transitions. [2024-11-24 00:54:08,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 770 transitions, 10224 flow [2024-11-24 00:54:08,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:54:08,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-24 00:54:08,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-11-24 00:54:08,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-24 00:54:08,708 INFO L175 Difference]: Start difference. First operand has 213 places, 633 transitions, 7325 flow. Second operand 8 states and 144 transitions. [2024-11-24 00:54:08,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 770 transitions, 10224 flow [2024-11-24 00:54:09,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 770 transitions, 10092 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-11-24 00:54:09,234 INFO L231 Difference]: Finished difference. Result has 218 places, 626 transitions, 7314 flow [2024-11-24 00:54:09,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6938, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7314, PETRI_PLACES=218, PETRI_TRANSITIONS=626} [2024-11-24 00:54:09,235 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 183 predicate places. [2024-11-24 00:54:09,235 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 626 transitions, 7314 flow [2024-11-24 00:54:09,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-11-24 00:54:09,235 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:54:09,236 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:09,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:54:09,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-24 00:54:09,436 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:54:09,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:09,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1105901977, now seen corresponding path program 8 times [2024-11-24 00:54:09,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:09,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952473677] [2024-11-24 00:54:09,437 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:54:09,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:09,458 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:54:09,459 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:54:09,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:09,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:09,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952473677] [2024-11-24 00:54:09,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952473677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:09,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109011770] [2024-11-24 00:54:09,614 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:54:09,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:09,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:09,616 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:09,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:54:09,711 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:54:09,711 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:54:09,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 00:54:09,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:09,876 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:54:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:09,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109011770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:54:09,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:54:09,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-24 00:54:09,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767195156] [2024-11-24 00:54:09,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:54:09,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 00:54:09,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:09,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 00:54:09,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:54:10,029 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-24 00:54:10,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 626 transitions, 7314 flow. Second operand has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 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) [2024-11-24 00:54:10,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:54:10,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-24 00:54:10,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:54:15,982 INFO L124 PetriNetUnfolderBase]: 18053/26097 cut-off events. [2024-11-24 00:54:15,982 INFO L125 PetriNetUnfolderBase]: For 218017/218017 co-relation queries the response was YES. [2024-11-24 00:54:16,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139729 conditions, 26097 events. 18053/26097 cut-off events. For 218017/218017 co-relation queries the response was YES. Maximal size of possible extension queue 1149. Compared 163861 event pairs, 2632 based on Foata normal form. 28/26125 useless extension candidates. Maximal degree in co-relation 137476. Up to 6498 conditions per place. [2024-11-24 00:54:16,222 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 1642 selfloop transitions, 292 changer transitions 0/1935 dead transitions. [2024-11-24 00:54:16,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 1935 transitions, 26765 flow [2024-11-24 00:54:16,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-24 00:54:16,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-24 00:54:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 261 transitions. [2024-11-24 00:54:16,224 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41626794258373206 [2024-11-24 00:54:16,224 INFO L175 Difference]: Start difference. First operand has 218 places, 626 transitions, 7314 flow. Second operand 19 states and 261 transitions. [2024-11-24 00:54:16,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 1935 transitions, 26765 flow [2024-11-24 00:54:17,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 1935 transitions, 26728 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-11-24 00:54:17,761 INFO L231 Difference]: Finished difference. Result has 248 places, 845 transitions, 11370 flow [2024-11-24 00:54:17,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7305, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=11370, PETRI_PLACES=248, PETRI_TRANSITIONS=845} [2024-11-24 00:54:17,763 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 213 predicate places. [2024-11-24 00:54:17,763 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 845 transitions, 11370 flow [2024-11-24 00:54:17,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 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) [2024-11-24 00:54:17,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:54:17,763 INFO L206 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] [2024-11-24 00:54:17,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 00:54:17,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-24 00:54:17,964 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:54:17,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:17,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2052551018, now seen corresponding path program 1 times [2024-11-24 00:54:17,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:17,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827859172] [2024-11-24 00:54:17,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:17,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:18,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:18,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827859172] [2024-11-24 00:54:18,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827859172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:18,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25613096] [2024-11-24 00:54:18,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:18,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:18,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:18,086 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:18,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:54:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:18,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 00:54:18,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:18,285 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:54:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:18,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25613096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:54:18,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:54:18,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-24 00:54:18,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660070670] [2024-11-24 00:54:18,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:54:18,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:54:18,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:18,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:54:18,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:54:18,430 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-24 00:54:18,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 845 transitions, 11370 flow. Second operand has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 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) [2024-11-24 00:54:18,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:54:18,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-24 00:54:18,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:54:21,121 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([424] L70-2-->L75: Formula: (let ((.cse0 (select (select |v_#memory_int#1_53| v_~A~0.base_75) (+ v_~A~0.offset_75 (* v_thread3Thread1of1ForFork1_~i~2_7 4))))) (or (and (= v_~max3~0_33 v_~max3~0_32) (= |v_thread3Thread1of1ForFork1_#t~mem8_2| |v_thread3Thread1of1ForFork1_#t~mem8_1|) (<= .cse0 v_~max3~0_33)) (and (< v_~max3~0_33 .cse0) (= v_~max3~0_32 .cse0)))) InVars {~A~0.base=v_~A~0.base_75, thread3Thread1of1ForFork1_#t~mem8=|v_thread3Thread1of1ForFork1_#t~mem8_1|, thread3Thread1of1ForFork1_~i~2=v_thread3Thread1of1ForFork1_~i~2_7, ~A~0.offset=v_~A~0.offset_75, #memory_int#1=|v_#memory_int#1_53|, ~max3~0=v_~max3~0_33} OutVars{~A~0.base=v_~A~0.base_75, ~A~0.offset=v_~A~0.offset_75, ~max3~0=v_~max3~0_32, thread3Thread1of1ForFork1_~i~2=v_thread3Thread1of1ForFork1_~i~2_7, thread3Thread1of1ForFork1_#t~mem8=|v_thread3Thread1of1ForFork1_#t~mem8_2|, #memory_int#1=|v_#memory_int#1_53|, thread3Thread1of1ForFork1_#t~mem7=|v_thread3Thread1of1ForFork1_#t~mem7_1|} AuxVars[] AssignedVars[~max3~0, thread3Thread1of1ForFork1_#t~mem8, thread3Thread1of1ForFork1_#t~mem7][330], [18#L58-6true, Black: 406#(and (or (and (= ~max3~0 ~max1~0) (<= 1 ~max3~0)) (and (= ~max3~0 0) (= ~max1~0 0))) (= ~max2~0 0) (or (< ~max1~0 (select (select |#memory_int#1| ~A~0.base) ~A~0.offset)) (< (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (+ ~max3~0 1))) (or (= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (select (select |#memory_int#1| ~A~0.base) ~A~0.offset)) (< (select (select |#memory_int#1| ~A~0.base) ~A~0.offset) (+ ~max1~0 1)))), Black: 378#(and (<= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) (= ~max3~0 0) (= ~max2~0 0) (= ~max1~0 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)), Black: 382#(and (= ~A~0.offset 0) (= ~max3~0 0) (= ~max2~0 0) (= ~max1~0 0) (<= ~N~0 1) (= thread1Thread1of1ForFork2_~i~0 0) (= ~M~0 0)), Black: 380#(and (= ~A~0.offset 0) (= ~max3~0 0) (= ~max2~0 0) (= ~max1~0 0) (<= ~N~0 1) (= ~M~0 0)), 864#true, Black: 344#(and (or (and (or (and (<= ~max3~0 ~max2~0) (= ~max2~0 (select (select |#memory_int#1| ~A~0.base) ~A~0.offset))) (< ~max3~0 (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4)))) (and (<= (+ ~max2~0 1) ~max3~0) (= ~max3~0 (select (select |#memory_int#1| ~A~0.base) ~A~0.offset)))) (or (and (<= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) ~max2~0) (= ~max2~0 (select (select |#memory_int#1| ~A~0.base) ~A~0.offset))) (and (<= (+ ~max2~0 1) (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4)))) (= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (select (select |#memory_int#1| ~A~0.base) ~A~0.offset))) (< (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (+ ~max3~0 1)))) (< (select (select |#memory_int#1| ~A~0.base) ~A~0.offset) (+ ~max1~0 1))) (or (< ~max1~0 (select (select |#memory_int#1| ~A~0.base) ~A~0.offset)) (and (or (and (= ~max3~0 ~max1~0) (<= (+ ~max2~0 1) ~max3~0)) (< ~max3~0 (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4)))) (and (= ~max2~0 ~max1~0) (<= ~max3~0 ~max2~0))) (or (and (<= (+ ~max2~0 1) (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4)))) (= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) ~max1~0)) (and (<= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) ~max2~0) (= ~max2~0 ~max1~0)) (< (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (+ ~max3~0 1)))))), Black: 1279#(and (or (and (= ~A~0.offset 0) (= ~max1~0 0)) (< 0 ~M~0)) (<= 0 ~M~0) (or (and (= ~max3~0 ~max1~0) (<= 1 ~max3~0)) (and (= ~max3~0 0) (= ~max1~0 0))) (= 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00:54:21,122 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-11-24 00:54:21,123 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-11-24 00:54:21,590 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([424] L70-2-->L75: Formula: (let ((.cse0 (select (select |v_#memory_int#1_53| v_~A~0.base_75) (+ v_~A~0.offset_75 (* v_thread3Thread1of1ForFork1_~i~2_7 4))))) (or (and (= v_~max3~0_33 v_~max3~0_32) (= |v_thread3Thread1of1ForFork1_#t~mem8_2| |v_thread3Thread1of1ForFork1_#t~mem8_1|) (<= .cse0 v_~max3~0_33)) (and (< v_~max3~0_33 .cse0) (= v_~max3~0_32 .cse0)))) InVars {~A~0.base=v_~A~0.base_75, thread3Thread1of1ForFork1_#t~mem8=|v_thread3Thread1of1ForFork1_#t~mem8_1|, thread3Thread1of1ForFork1_~i~2=v_thread3Thread1of1ForFork1_~i~2_7, ~A~0.offset=v_~A~0.offset_75, #memory_int#1=|v_#memory_int#1_53|, ~max3~0=v_~max3~0_33} OutVars{~A~0.base=v_~A~0.base_75, ~A~0.offset=v_~A~0.offset_75, ~max3~0=v_~max3~0_32, thread3Thread1of1ForFork1_~i~2=v_thread3Thread1of1ForFork1_~i~2_7, thread3Thread1of1ForFork1_#t~mem8=|v_thread3Thread1of1ForFork1_#t~mem8_2|, #memory_int#1=|v_#memory_int#1_53|, thread3Thread1of1ForFork1_#t~mem7=|v_thread3Thread1of1ForFork1_#t~mem7_1|} AuxVars[] AssignedVars[~max3~0, thread3Thread1of1ForFork1_#t~mem8, thread3Thread1of1ForFork1_#t~mem7][330], [1708#(and (<= ~M~0 0) (<= (+ thread3Thread1of1ForFork1_~i~2 1) ~N~0)), Black: 406#(and (or (and (= ~max3~0 ~max1~0) (<= 1 ~max3~0)) (and (= ~max3~0 0) (= ~max1~0 0))) (= ~max2~0 0) (or (< ~max1~0 (select (select |#memory_int#1| ~A~0.base) ~A~0.offset)) (< (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (+ ~max3~0 1))) (or (= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (select (select |#memory_int#1| ~A~0.base) ~A~0.offset)) (< (select (select |#memory_int#1| ~A~0.base) ~A~0.offset) (+ ~max1~0 1)))), Black: 378#(and (<= 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olderBase$Statistics]: this new event has 22 ancestors and is cut-off event [2024-11-24 00:54:21,591 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-11-24 00:54:21,591 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-11-24 00:54:21,591 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-11-24 00:54:21,594 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([424] L70-2-->L75: Formula: (let ((.cse0 (select (select |v_#memory_int#1_53| v_~A~0.base_75) (+ v_~A~0.offset_75 (* v_thread3Thread1of1ForFork1_~i~2_7 4))))) (or (and (= v_~max3~0_33 v_~max3~0_32) (= |v_thread3Thread1of1ForFork1_#t~mem8_2| |v_thread3Thread1of1ForFork1_#t~mem8_1|) (<= .cse0 v_~max3~0_33)) (and (< v_~max3~0_33 .cse0) (= v_~max3~0_32 .cse0)))) InVars {~A~0.base=v_~A~0.base_75, thread3Thread1of1ForFork1_#t~mem8=|v_thread3Thread1of1ForFork1_#t~mem8_1|, thread3Thread1of1ForFork1_~i~2=v_thread3Thread1of1ForFork1_~i~2_7, ~A~0.offset=v_~A~0.offset_75, #memory_int#1=|v_#memory_int#1_53|, ~max3~0=v_~max3~0_33} OutVars{~A~0.base=v_~A~0.base_75, ~A~0.offset=v_~A~0.offset_75, ~max3~0=v_~max3~0_32, thread3Thread1of1ForFork1_~i~2=v_thread3Thread1of1ForFork1_~i~2_7, thread3Thread1of1ForFork1_#t~mem8=|v_thread3Thread1of1ForFork1_#t~mem8_2|, #memory_int#1=|v_#memory_int#1_53|, thread3Thread1of1ForFork1_#t~mem7=|v_thread3Thread1of1ForFork1_#t~mem7_1|} AuxVars[] AssignedVars[~max3~0, thread3Thread1of1ForFork1_#t~mem8, thread3Thread1of1ForFork1_#t~mem7][330], [Black: 406#(and (or (and (= ~max3~0 ~max1~0) (<= 1 ~max3~0)) (and (= ~max3~0 0) (= ~max1~0 0))) (= ~max2~0 0) (or (< ~max1~0 (select (select |#memory_int#1| ~A~0.base) ~A~0.offset)) (< (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (+ ~max3~0 1))) (or (= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (select (select |#memory_int#1| ~A~0.base) 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635#true]) [2024-11-24 00:54:21,595 INFO L294 olderBase$Statistics]: this new event has 22 ancestors and is cut-off event [2024-11-24 00:54:21,595 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-11-24 00:54:21,596 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-11-24 00:54:21,596 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-11-24 00:54:21,598 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([424] L70-2-->L75: Formula: (let ((.cse0 (select (select |v_#memory_int#1_53| v_~A~0.base_75) (+ v_~A~0.offset_75 (* v_thread3Thread1of1ForFork1_~i~2_7 4))))) (or (and (= v_~max3~0_33 v_~max3~0_32) (= |v_thread3Thread1of1ForFork1_#t~mem8_2| |v_thread3Thread1of1ForFork1_#t~mem8_1|) (<= .cse0 v_~max3~0_33)) (and (< v_~max3~0_33 .cse0) (= v_~max3~0_32 .cse0)))) InVars {~A~0.base=v_~A~0.base_75, 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Black: 415#(and (<= 0 ~M~0) (= ~A~0.offset 0) (= ~max3~0 0) (= ~max2~0 0) (= ~max1~0 0)), 635#true]) [2024-11-24 00:54:21,599 INFO L294 olderBase$Statistics]: this new event has 22 ancestors and is cut-off event [2024-11-24 00:54:21,599 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-11-24 00:54:21,599 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-11-24 00:54:21,599 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-11-24 00:54:21,962 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([424] L70-2-->L75: Formula: (let ((.cse0 (select (select |v_#memory_int#1_53| v_~A~0.base_75) (+ v_~A~0.offset_75 (* v_thread3Thread1of1ForFork1_~i~2_7 4))))) (or (and (= v_~max3~0_33 v_~max3~0_32) (= |v_thread3Thread1of1ForFork1_#t~mem8_2| |v_thread3Thread1of1ForFork1_#t~mem8_1|) (<= .cse0 v_~max3~0_33)) (and (< v_~max3~0_33 .cse0) (= v_~max3~0_32 .cse0)))) InVars {~A~0.base=v_~A~0.base_75, thread3Thread1of1ForFork1_#t~mem8=|v_thread3Thread1of1ForFork1_#t~mem8_1|, thread3Thread1of1ForFork1_~i~2=v_thread3Thread1of1ForFork1_~i~2_7, ~A~0.offset=v_~A~0.offset_75, #memory_int#1=|v_#memory_int#1_53|, ~max3~0=v_~max3~0_33} OutVars{~A~0.base=v_~A~0.base_75, ~A~0.offset=v_~A~0.offset_75, ~max3~0=v_~max3~0_32, thread3Thread1of1ForFork1_~i~2=v_thread3Thread1of1ForFork1_~i~2_7, thread3Thread1of1ForFork1_#t~mem8=|v_thread3Thread1of1ForFork1_#t~mem8_2|, #memory_int#1=|v_#memory_int#1_53|, thread3Thread1of1ForFork1_#t~mem7=|v_thread3Thread1of1ForFork1_#t~mem7_1|} AuxVars[] AssignedVars[~max3~0, thread3Thread1of1ForFork1_#t~mem8, thread3Thread1of1ForFork1_#t~mem7][330], [1708#(and (<= ~M~0 0) (<= (+ thread3Thread1of1ForFork1_~i~2 1) ~N~0)), Black: 406#(and (or (and (= ~max3~0 ~max1~0) (<= 1 ~max3~0)) (and (= ~max3~0 0) (= ~max1~0 0))) (= ~max2~0 0) (or (< ~max1~0 (select (select |#memory_int#1| ~A~0.base) ~A~0.offset)) (< (select 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416#(and (<= 0 ~M~0) (= ~A~0.offset 0) (= ~max3~0 0) (= thread2Thread1of1ForFork0_~i~1 0) (= ~max2~0 0) (= ~max1~0 0)), Black: 415#(and (<= 0 ~M~0) (= ~A~0.offset 0) (= ~max3~0 0) (= ~max2~0 0) (= ~max1~0 0)), 1087#true, 635#true]) [2024-11-24 00:54:21,962 INFO L294 olderBase$Statistics]: this new event has 23 ancestors and is cut-off event [2024-11-24 00:54:21,963 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-11-24 00:54:21,963 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-11-24 00:54:21,963 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-11-24 00:54:21,965 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([424] L70-2-->L75: Formula: (let ((.cse0 (select (select |v_#memory_int#1_53| v_~A~0.base_75) (+ v_~A~0.offset_75 (* v_thread3Thread1of1ForFork1_~i~2_7 4))))) (or (and (= v_~max3~0_33 v_~max3~0_32) (= 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~A~0.offset (* ~M~0 4)))) (= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (select (select |#memory_int#1| ~A~0.base) ~A~0.offset))) (< (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (+ ~max3~0 1)))) (< (select (select |#memory_int#1| ~A~0.base) ~A~0.offset) (+ ~max1~0 1))) (or (< ~max1~0 (select (select |#memory_int#1| ~A~0.base) ~A~0.offset)) (and (or (and (= ~max3~0 ~max1~0) (<= (+ ~max2~0 1) ~max3~0)) (< ~max3~0 (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4)))) (and (= ~max2~0 ~max1~0) (<= ~max3~0 ~max2~0))) (or (and (<= (+ ~max2~0 1) (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4)))) (= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) ~max1~0)) (and (<= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) ~max2~0) (= ~max2~0 ~max1~0)) (< (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (+ ~max3~0 1)))))), Black: 594#(and (or (and (= ~max3~0 ~max1~0) (<= (+ ~max2~0 1) ~max3~0)) (< ~max3~0 (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4)))) (and (= ~max2~0 ~max1~0) (<= ~max3~0 ~max2~0))) (<= (select (select |#memory_int#1| ~A~0.base) ~A~0.offset) ~max1~0) (<= (select (select |#memory_int#1| ~A~0.base) (+ (* thread1Thread1of1ForFork2_~i~0 4) ~A~0.offset)) ~max1~0) (or (and (<= (+ ~max2~0 1) (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4)))) (= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) ~max1~0)) (and (<= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) ~max2~0) (= ~max2~0 ~max1~0)) (< (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (+ ~max3~0 1)))), Black: 586#(and (or (< ~N~0 2) (< (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) |ULTIMATE.start_create_fresh_int_array_~size#1|)) (= ~A~0.offset 0) (= ~max3~0 0) (= ~max2~0 0) (= ~max1~0 0) (= thread1Thread1of1ForFork2_~i~0 0) (= ~M~0 0)), Black: 588#(and (or (< ~N~0 2) (< (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) |ULTIMATE.start_create_fresh_int_array_~size#1|)) (= ~A~0.offset 0) (= ~max3~0 0) (= thread2Thread1of1ForFork0_~i~1 0) (= ~max2~0 0) (= ~max1~0 0) (= ~M~0 0)), Black: 610#(and (= ~max3~0 ~max1~0) (<= (select (select |#memory_int#1| ~A~0.base) ~A~0.offset) ~max1~0) (= ~max2~0 0) (<= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) ~max3~0) (or (= ~max1~0 0) (< 0 ~max1~0))), Black: 420#(and (or (< 0 (select (select |#memory_int#1| ~A~0.base) 0)) (= ~max1~0 0)) (= ~A~0.offset 0) (= ~max3~0 0) (= ~max2~0 0) (or (= ~max1~0 (select (select |#memory_int#1| ~A~0.base) 0)) (< (select (select |#memory_int#1| ~A~0.base) 0) 1)) (= ~M~0 0)), Black: 590#(and (or (< ~N~0 2) (< (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) |ULTIMATE.start_create_fresh_int_array_~size#1|)) (= ~A~0.offset 0) (= ~max3~0 0) (= thread2Thread1of1ForFork0_~i~1 0) (= ~max2~0 0) (= ~max1~0 0) (= thread1Thread1of1ForFork2_~i~0 0) (= ~M~0 0)), Black: 416#(and (<= 0 ~M~0) (= ~A~0.offset 0) (= ~max3~0 0) (= thread2Thread1of1ForFork0_~i~1 0) (= ~max2~0 0) (= ~max1~0 0)), 1087#true, Black: 415#(and (<= 0 ~M~0) (= ~A~0.offset 0) (= ~max3~0 0) (= ~max2~0 0) (= ~max1~0 0)), 635#true]) [2024-11-24 00:54:21,965 INFO L294 olderBase$Statistics]: this new event has 23 ancestors and is cut-off event [2024-11-24 00:54:21,965 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-11-24 00:54:21,965 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-11-24 00:54:21,965 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-11-24 00:54:22,600 INFO L124 PetriNetUnfolderBase]: 7988/12695 cut-off events. [2024-11-24 00:54:22,600 INFO L125 PetriNetUnfolderBase]: For 180144/180948 co-relation queries the response was YES. [2024-11-24 00:54:22,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85199 conditions, 12695 events. 7988/12695 cut-off events. For 180144/180948 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 86845 event pairs, 2712 based on Foata normal form. 785/13309 useless extension candidates. Maximal degree in co-relation 85066. Up to 5793 conditions per place. [2024-11-24 00:54:22,810 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 717 selfloop transitions, 24 changer transitions 0/792 dead transitions. [2024-11-24 00:54:22,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 792 transitions, 12734 flow [2024-11-24 00:54:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:54:22,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:54:22,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-11-24 00:54:22,811 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2024-11-24 00:54:22,811 INFO L175 Difference]: Start difference. First operand has 248 places, 845 transitions, 11370 flow. Second operand 6 states and 98 transitions. [2024-11-24 00:54:22,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 792 transitions, 12734 flow [2024-11-24 00:54:23,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 792 transitions, 12294 flow, removed 190 selfloop flow, removed 8 redundant places. [2024-11-24 00:54:23,985 INFO L231 Difference]: Finished difference. Result has 234 places, 626 transitions, 8770 flow [2024-11-24 00:54:23,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8625, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8770, PETRI_PLACES=234, PETRI_TRANSITIONS=626} [2024-11-24 00:54:23,986 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 199 predicate places. [2024-11-24 00:54:23,986 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 626 transitions, 8770 flow [2024-11-24 00:54:23,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 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) [2024-11-24 00:54:23,987 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:54:23,987 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:23,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-24 00:54:24,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:24,187 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:54:24,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash -750348223, now seen corresponding path program 9 times [2024-11-24 00:54:24,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:24,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10554809] [2024-11-24 00:54:24,188 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:54:24,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:24,215 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-24 00:54:24,215 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:54:24,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:24,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:24,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10554809] [2024-11-24 00:54:24,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10554809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:24,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593637405] [2024-11-24 00:54:24,464 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:54:24,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:24,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:24,466 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:24,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:54:24,559 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-24 00:54:24,560 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:54:24,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 00:54:24,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:24,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:24,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:54:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:24,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593637405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:54:24,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:54:24,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-24 00:54:24,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376351090] [2024-11-24 00:54:24,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:54:24,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 00:54:24,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:24,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 00:54:24,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:54:24,773 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-24 00:54:24,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 626 transitions, 8770 flow. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 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) [2024-11-24 00:54:24,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:54:24,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-24 00:54:24,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:54:26,986 INFO L124 PetriNetUnfolderBase]: 7025/11144 cut-off events. [2024-11-24 00:54:26,986 INFO L125 PetriNetUnfolderBase]: For 159813/160186 co-relation queries the response was YES. [2024-11-24 00:54:27,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74142 conditions, 11144 events. 7025/11144 cut-off events. For 159813/160186 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 73343 event pairs, 2230 based on Foata normal form. 483/11590 useless extension candidates. Maximal degree in co-relation 72099. Up to 5794 conditions per place. [2024-11-24 00:54:27,083 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 556 selfloop transitions, 78 changer transitions 0/658 dead transitions. [2024-11-24 00:54:27,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 658 transitions, 10375 flow [2024-11-24 00:54:27,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:54:27,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 00:54:27,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-11-24 00:54:27,085 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49783549783549785 [2024-11-24 00:54:27,085 INFO L175 Difference]: Start difference. First operand has 234 places, 626 transitions, 8770 flow. Second operand 7 states and 115 transitions. [2024-11-24 00:54:27,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 658 transitions, 10375 flow [2024-11-24 00:54:28,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 658 transitions, 10332 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-11-24 00:54:28,080 INFO L231 Difference]: Finished difference. Result has 238 places, 577 transitions, 8301 flow [2024-11-24 00:54:28,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8062, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8301, PETRI_PLACES=238, PETRI_TRANSITIONS=577} [2024-11-24 00:54:28,081 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 203 predicate places. [2024-11-24 00:54:28,081 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 577 transitions, 8301 flow [2024-11-24 00:54:28,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 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) [2024-11-24 00:54:28,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:54:28,081 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:28,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-24 00:54:28,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 00:54:28,282 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:54:28,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:28,282 INFO L85 PathProgramCache]: Analyzing trace with hash -625103703, now seen corresponding path program 10 times [2024-11-24 00:54:28,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:28,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206149291] [2024-11-24 00:54:28,282 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:54:28,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:28,291 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:54:28,291 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:54:28,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:28,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:28,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206149291] [2024-11-24 00:54:28,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206149291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:28,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:28,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:54:28,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301549288] [2024-11-24 00:54:28,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:28,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:54:28,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:28,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:54:28,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:54:28,398 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-24 00:54:28,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 577 transitions, 8301 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:54:28,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:54:28,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-24 00:54:28,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:54:32,504 INFO L124 PetriNetUnfolderBase]: 10941/16411 cut-off events. [2024-11-24 00:54:32,505 INFO L125 PetriNetUnfolderBase]: For 208436/208728 co-relation queries the response was YES. [2024-11-24 00:54:32,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108353 conditions, 16411 events. 10941/16411 cut-off events. For 208436/208728 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 102980 event pairs, 1756 based on Foata normal form. 20/16430 useless extension candidates. Maximal degree in co-relation 105764. Up to 4644 conditions per place. [2024-11-24 00:54:32,659 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 718 selfloop transitions, 170 changer transitions 20/910 dead transitions. [2024-11-24 00:54:32,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 910 transitions, 14306 flow [2024-11-24 00:54:32,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:54:32,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-24 00:54:32,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-11-24 00:54:32,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4983164983164983 [2024-11-24 00:54:32,660 INFO L175 Difference]: Start difference. First operand has 238 places, 577 transitions, 8301 flow. Second operand 9 states and 148 transitions. [2024-11-24 00:54:32,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 910 transitions, 14306 flow [2024-11-24 00:54:34,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 910 transitions, 14154 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-11-24 00:54:34,654 INFO L231 Difference]: Finished difference. Result has 245 places, 609 transitions, 9360 flow [2024-11-24 00:54:34,655 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8182, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9360, PETRI_PLACES=245, PETRI_TRANSITIONS=609} [2024-11-24 00:54:34,655 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 210 predicate places. [2024-11-24 00:54:34,655 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 609 transitions, 9360 flow [2024-11-24 00:54:34,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:54:34,656 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:54:34,656 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:34,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 00:54:34,656 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:54:34,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:34,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2049567537, now seen corresponding path program 11 times [2024-11-24 00:54:34,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:34,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273169605] [2024-11-24 00:54:34,657 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:54:34,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:34,672 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:54:34,673 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:54:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:54:34,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:34,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273169605] [2024-11-24 00:54:34,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273169605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:34,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995594407] [2024-11-24 00:54:34,772 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:54:34,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:34,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:34,776 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:34,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:54:34,872 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:54:34,873 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:54:34,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 00:54:34,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:35,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:54:35,224 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:54:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:54:35,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995594407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:54:35,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:54:35,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-24 00:54:35,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426204003] [2024-11-24 00:54:35,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:54:35,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 00:54:35,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:35,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 00:54:35,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:54:35,403 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-24 00:54:35,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 609 transitions, 9360 flow. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 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) [2024-11-24 00:54:35,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:54:35,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-24 00:54:35,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:54:37,877 INFO L124 PetriNetUnfolderBase]: 7765/12127 cut-off events. [2024-11-24 00:54:37,877 INFO L125 PetriNetUnfolderBase]: For 173800/174331 co-relation queries the response was YES. [2024-11-24 00:54:37,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83655 conditions, 12127 events. 7765/12127 cut-off events. For 173800/174331 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 78846 event pairs, 2566 based on Foata normal form. 622/12682 useless extension candidates. Maximal degree in co-relation 82845. Up to 8263 conditions per place. [2024-11-24 00:54:38,003 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 340 selfloop transitions, 3 changer transitions 253/613 dead transitions. [2024-11-24 00:54:38,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 613 transitions, 10345 flow [2024-11-24 00:54:38,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:54:38,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 00:54:38,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-11-24 00:54:38,004 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-11-24 00:54:38,004 INFO L175 Difference]: Start difference. First operand has 245 places, 609 transitions, 9360 flow. Second operand 7 states and 110 transitions. [2024-11-24 00:54:38,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 613 transitions, 10345 flow [2024-11-24 00:54:40,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 613 transitions, 10161 flow, removed 58 selfloop flow, removed 3 redundant places. [2024-11-24 00:54:40,056 INFO L231 Difference]: Finished difference. Result has 248 places, 360 transitions, 4998 flow [2024-11-24 00:54:40,056 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8388, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4998, PETRI_PLACES=248, PETRI_TRANSITIONS=360} [2024-11-24 00:54:40,057 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 213 predicate places. [2024-11-24 00:54:40,057 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 360 transitions, 4998 flow [2024-11-24 00:54:40,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 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) [2024-11-24 00:54:40,057 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:54:40,057 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:40,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 00:54:40,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:40,262 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:54:40,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:40,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1489884979, now seen corresponding path program 12 times [2024-11-24 00:54:40,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:40,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784267104] [2024-11-24 00:54:40,263 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 00:54:40,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:40,280 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-24 00:54:40,280 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:54:40,418 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:40,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:40,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784267104] [2024-11-24 00:54:40,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784267104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:40,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541064593] [2024-11-24 00:54:40,419 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 00:54:40,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:40,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:40,422 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:40,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 00:54:40,518 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-24 00:54:40,519 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:54:40,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-24 00:54:40,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:40,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:40,656 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:54:40,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:40,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541064593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:54:40,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:54:40,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-24 00:54:40,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370320352] [2024-11-24 00:54:40,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:54:40,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 00:54:40,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:40,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 00:54:40,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-24 00:54:40,869 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-24 00:54:40,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 360 transitions, 4998 flow. Second operand has 20 states, 20 states have (on average 7.3) internal successors, (146), 20 states have internal predecessors, (146), 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) [2024-11-24 00:54:40,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:54:40,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-24 00:54:40,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:54:48,038 INFO L124 PetriNetUnfolderBase]: 22839/32543 cut-off events. [2024-11-24 00:54:48,038 INFO L125 PetriNetUnfolderBase]: For 460056/461400 co-relation queries the response was YES. [2024-11-24 00:54:48,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226616 conditions, 32543 events. 22839/32543 cut-off events. For 460056/461400 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 202210 event pairs, 901 based on Foata normal form. 1371/33870 useless extension candidates. Maximal degree in co-relation 226540. Up to 14083 conditions per place. [2024-11-24 00:54:48,387 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 1093 selfloop transitions, 271 changer transitions 0/1380 dead transitions. [2024-11-24 00:54:48,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 1380 transitions, 21985 flow [2024-11-24 00:54:48,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-24 00:54:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-24 00:54:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 573 transitions. [2024-11-24 00:54:48,389 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-11-24 00:54:48,389 INFO L175 Difference]: Start difference. First operand has 248 places, 360 transitions, 4998 flow. Second operand 37 states and 573 transitions. [2024-11-24 00:54:48,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 1380 transitions, 21985 flow [2024-11-24 00:54:51,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 1380 transitions, 20632 flow, removed 529 selfloop flow, removed 22 redundant places. [2024-11-24 00:54:51,587 INFO L231 Difference]: Finished difference. Result has 228 places, 561 transitions, 7620 flow [2024-11-24 00:54:51,588 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4594, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7620, PETRI_PLACES=228, PETRI_TRANSITIONS=561} [2024-11-24 00:54:51,588 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 193 predicate places. [2024-11-24 00:54:51,588 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 561 transitions, 7620 flow [2024-11-24 00:54:51,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.3) internal successors, (146), 20 states have internal predecessors, (146), 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) [2024-11-24 00:54:51,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:54:51,588 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:51,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 00:54:51,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:51,789 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:54:51,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:51,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1315219553, now seen corresponding path program 13 times [2024-11-24 00:54:51,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:51,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480467754] [2024-11-24 00:54:51,790 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 00:54:51,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:52,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:52,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:52,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480467754] [2024-11-24 00:54:52,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480467754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:52,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488192392] [2024-11-24 00:54:52,060 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 00:54:52,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:52,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:52,063 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:52,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 00:54:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:52,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-24 00:54:52,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:52,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:52,332 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:54:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:54:52,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488192392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:54:52,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:54:52,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-24 00:54:52,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675282061] [2024-11-24 00:54:52,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:54:52,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 00:54:52,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:52,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 00:54:52,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:54:52,483 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-24 00:54:52,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 561 transitions, 7620 flow. Second operand has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 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) [2024-11-24 00:54:52,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:54:52,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-24 00:54:52,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:54:59,052 INFO L124 PetriNetUnfolderBase]: 23167/33136 cut-off events. [2024-11-24 00:54:59,053 INFO L125 PetriNetUnfolderBase]: For 504422/505768 co-relation queries the response was YES. [2024-11-24 00:54:59,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245900 conditions, 33136 events. 23167/33136 cut-off events. For 504422/505768 co-relation queries the response was YES. Maximal size of possible extension queue 1131. Compared 208516 event pairs, 2114 based on Foata normal form. 1415/34514 useless extension candidates. Maximal degree in co-relation 245823. Up to 14445 conditions per place. [2024-11-24 00:54:59,399 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 612 selfloop transitions, 226 changer transitions 0/854 dead transitions. [2024-11-24 00:54:59,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 854 transitions, 13242 flow [2024-11-24 00:54:59,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:54:59,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-24 00:54:59,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 177 transitions. [2024-11-24 00:54:59,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4125874125874126 [2024-11-24 00:54:59,401 INFO L175 Difference]: Start difference. First operand has 228 places, 561 transitions, 7620 flow. Second operand 13 states and 177 transitions. [2024-11-24 00:54:59,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 854 transitions, 13242 flow [2024-11-24 00:55:03,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 854 transitions, 12689 flow, removed 273 selfloop flow, removed 4 redundant places. [2024-11-24 00:55:03,412 INFO L231 Difference]: Finished difference. Result has 238 places, 580 transitions, 8095 flow [2024-11-24 00:55:03,413 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7105, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8095, PETRI_PLACES=238, PETRI_TRANSITIONS=580} [2024-11-24 00:55:03,413 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 203 predicate places. [2024-11-24 00:55:03,413 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 580 transitions, 8095 flow [2024-11-24 00:55:03,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 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) [2024-11-24 00:55:03,414 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:55:03,414 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:03,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 00:55:03,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:03,614 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-24 00:55:03,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:03,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1590896285, now seen corresponding path program 14 times [2024-11-24 00:55:03,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:03,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210536166] [2024-11-24 00:55:03,615 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:55:03,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:03,631 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:55:03,631 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:55:03,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:55:03,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:03,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210536166] [2024-11-24 00:55:03,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210536166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:03,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283607324] [2024-11-24 00:55:03,779 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:55:03,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:03,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:03,781 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:03,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4369774f-6ad5-4138-a4d0-6268bda7cf39/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 00:55:03,865 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:55:03,865 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:55:03,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-24 00:55:03,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:55:03,996 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:55:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:55:04,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283607324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:55:04,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:55:04,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-11-24 00:55:04,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891835902] [2024-11-24 00:55:04,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:55:04,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 00:55:04,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:04,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 00:55:04,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:55:04,178 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-24 00:55:04,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 580 transitions, 8095 flow. Second operand has 21 states, 21 states have (on average 7.142857142857143) internal successors, (150), 21 states have internal predecessors, (150), 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) [2024-11-24 00:55:04,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:55:04,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-24 00:55:04,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand