./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/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_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 387879bf92b16ead997b40b3e249348f8a6b399496756f9bc3c41b6dc3c21353 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:37:11,084 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:37:11,160 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 22:37:11,167 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:37:11,167 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:37:11,208 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:37:11,209 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:37:11,209 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:37:11,209 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:37:11,209 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:37:11,209 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:37:11,209 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:37:11,210 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:37:11,210 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:37:11,210 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:37:11,210 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:37:11,210 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:37:11,210 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:37:11,211 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:37:11,211 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:37:11,211 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:37:11,211 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:37:11,211 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:37:11,211 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:37:11,211 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 22:37:11,211 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 22:37:11,211 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:37:11,212 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:37:11,212 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:37:11,212 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:37:11,212 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:37:11,212 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:37:11,212 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:37:11,212 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:37:11,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:37:11,212 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:37:11,213 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:37:11,213 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:37:11,213 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:37:11,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:37:11,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:37:11,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:37:11,213 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:37:11,213 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:37:11,213 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:37:11,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:37:11,214 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:37:11,214 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:37:11,214 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:37:11,214 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:37:11,214 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_6c7feb48-bf31-472e-9a6c-fb160a3c3004/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 ! overflow) ) 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 -> 387879bf92b16ead997b40b3e249348f8a6b399496756f9bc3c41b6dc3c21353 [2024-11-23 22:37:11,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:37:11,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:37:11,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:37:11,542 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:37:11,542 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:37:11,545 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-11-23 22:37:14,507 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/data/a420fcf21/0a50ad8cbf604f07a502cdbd8b176fbf/FLAGef0580192 [2024-11-23 22:37:14,802 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:37:14,803 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-11-23 22:37:14,811 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/data/a420fcf21/0a50ad8cbf604f07a502cdbd8b176fbf/FLAGef0580192 [2024-11-23 22:37:14,836 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/data/a420fcf21/0a50ad8cbf604f07a502cdbd8b176fbf [2024-11-23 22:37:14,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:37:14,841 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:37:14,844 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:37:14,845 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:37:14,850 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:37:14,851 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:37:14" (1/1) ... [2024-11-23 22:37:14,854 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f0420a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:14, skipping insertion in model container [2024-11-23 22:37:14,855 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:37:14" (1/1) ... [2024-11-23 22:37:14,878 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:37:15,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:37:15,121 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:37:15,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:37:15,183 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:37:15,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:15 WrapperNode [2024-11-23 22:37:15,184 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:37:15,185 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:37:15,185 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:37:15,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:37:15,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:15" (1/1) ... [2024-11-23 22:37:15,206 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:15" (1/1) ... [2024-11-23 22:37:15,241 INFO L138 Inliner]: procedures = 23, calls = 23, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 167 [2024-11-23 22:37:15,243 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:37:15,244 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:37:15,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:37:15,244 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:37:15,254 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:15" (1/1) ... [2024-11-23 22:37:15,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:15" (1/1) ... [2024-11-23 22:37:15,259 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:15" (1/1) ... [2024-11-23 22:37:15,279 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 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]. [2024-11-23 22:37:15,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:15" (1/1) ... [2024-11-23 22:37:15,283 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:15" (1/1) ... [2024-11-23 22:37:15,292 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:15" (1/1) ... [2024-11-23 22:37:15,298 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:15" (1/1) ... [2024-11-23 22:37:15,304 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:15" (1/1) ... [2024-11-23 22:37:15,306 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:15" (1/1) ... [2024-11-23 22:37:15,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:15" (1/1) ... [2024-11-23 22:37:15,313 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:37:15,314 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:37:15,318 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:37:15,319 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:37:15,320 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:15" (1/1) ... [2024-11-23 22:37:15,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:37:15,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:15,359 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:37:15,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:37:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:37:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 22:37:15,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 22:37:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 22:37:15,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 22:37:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:37:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 22:37:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 22:37:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 22:37:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 22:37:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:37:15,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:37:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 22:37:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 22:37:15,399 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 22:37:15,525 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:37:15,527 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:37:15,965 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 22:37:15,965 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:37:16,242 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:37:16,242 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-23 22:37:16,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:37:16 BoogieIcfgContainer [2024-11-23 22:37:16,242 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:37:16,245 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:37:16,245 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:37:16,250 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:37:16,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:37:14" (1/3) ... [2024-11-23 22:37:16,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcbde4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:37:16, skipping insertion in model container [2024-11-23 22:37:16,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:15" (2/3) ... [2024-11-23 22:37:16,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcbde4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:37:16, skipping insertion in model container [2024-11-23 22:37:16,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:37:16" (3/3) ... [2024-11-23 22:37:16,252 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2024-11-23 22:37:16,268 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:37:16,269 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-counter-queue.wvr.c that has 3 procedures, 64 locations, 1 initial locations, 3 loop locations, and 18 error locations. [2024-11-23 22:37:16,270 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 22:37:16,339 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 22:37:16,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 154 flow [2024-11-23 22:37:16,444 INFO L124 PetriNetUnfolderBase]: 7/68 cut-off events. [2024-11-23 22:37:16,447 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 22:37:16,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 68 events. 7/68 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 193 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2024-11-23 22:37:16,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 70 transitions, 154 flow [2024-11-23 22:37:16,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 66 transitions, 141 flow [2024-11-23 22:37:16,475 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:37:16,487 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;@1c11c83f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:37:16,487 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-23 22:37:16,492 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 22:37:16,492 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-23 22:37:16,492 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 22:37:16,493 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:16,493 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 22:37:16,494 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:16,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:16,505 INFO L85 PathProgramCache]: Analyzing trace with hash 524405, now seen corresponding path program 1 times [2024-11-23 22:37:16,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:16,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259549581] [2024-11-23 22:37:16,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:16,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:16,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:16,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:16,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259549581] [2024-11-23 22:37:16,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259549581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:16,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:16,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 22:37:16,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795440304] [2024-11-23 22:37:16,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:16,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:37:16,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:16,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:37:16,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:37:16,900 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-23 22:37:16,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2024-11-23 22:37:16,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:16,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-23 22:37:16,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:17,299 INFO L124 PetriNetUnfolderBase]: 341/925 cut-off events. [2024-11-23 22:37:17,299 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-23 22:37:17,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 925 events. 341/925 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6065 event pairs, 222 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 1411. Up to 531 conditions per place. [2024-11-23 22:37:17,315 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 30 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2024-11-23 22:37:17,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 215 flow [2024-11-23 22:37:17,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:37:17,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:37:17,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 184 transitions. [2024-11-23 22:37:17,338 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-11-23 22:37:17,340 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 141 flow. Second operand 4 states and 184 transitions. [2024-11-23 22:37:17,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 215 flow [2024-11-23 22:37:17,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 210 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 22:37:17,356 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 165 flow [2024-11-23 22:37:17,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2024-11-23 22:37:17,364 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-11-23 22:37:17,365 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 165 flow [2024-11-23 22:37:17,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2024-11-23 22:37:17,365 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:17,365 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-23 22:37:17,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 22:37:17,366 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:17,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:17,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1556814644, now seen corresponding path program 1 times [2024-11-23 22:37:17,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:17,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68211763] [2024-11-23 22:37:17,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:17,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:17,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:17,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68211763] [2024-11-23 22:37:17,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68211763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:17,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078152232] [2024-11-23 22:37:17,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:17,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:17,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:17,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:37:17,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:37:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:17,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 22:37:17,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:17,765 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:37:17,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078152232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:17,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:37:17,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 22:37:17,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25530670] [2024-11-23 22:37:17,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:17,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:37:17,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:17,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:37:17,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:37:17,788 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-23 22:37:17,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 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) [2024-11-23 22:37:17,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:17,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-23 22:37:17,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:18,097 INFO L124 PetriNetUnfolderBase]: 341/924 cut-off events. [2024-11-23 22:37:18,098 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-23 22:37:18,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 924 events. 341/924 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6056 event pairs, 222 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 1461. Up to 526 conditions per place. [2024-11-23 22:37:18,108 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 26 selfloop transitions, 7 changer transitions 0/68 dead transitions. [2024-11-23 22:37:18,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 227 flow [2024-11-23 22:37:18,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:37:18,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 22:37:18,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2024-11-23 22:37:18,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-11-23 22:37:18,114 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 165 flow. Second operand 6 states and 256 transitions. [2024-11-23 22:37:18,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 227 flow [2024-11-23 22:37:18,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 22:37:18,119 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 172 flow [2024-11-23 22:37:18,120 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2024-11-23 22:37:18,121 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2024-11-23 22:37:18,121 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 172 flow [2024-11-23 22:37:18,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 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) [2024-11-23 22:37:18,122 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:18,123 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-23 22:37:18,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 22:37:18,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-23 22:37:18,324 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:18,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:18,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1016613200, now seen corresponding path program 1 times [2024-11-23 22:37:18,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:18,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341295989] [2024-11-23 22:37:18,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:18,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:18,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:18,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341295989] [2024-11-23 22:37:18,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341295989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:18,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510419402] [2024-11-23 22:37:18,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:18,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:18,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:18,475 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:37:18,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 22:37:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:18,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 22:37:18,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:18,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:37:18,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:18,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510419402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:37:18,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:37:18,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-23 22:37:18,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40581975] [2024-11-23 22:37:18,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:37:18,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 22:37:18,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:18,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 22:37:18,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:37:18,692 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-23 22:37:18,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 172 flow. Second operand has 12 states, 12 states have (on average 38.083333333333336) internal successors, (457), 12 states have internal predecessors, (457), 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) [2024-11-23 22:37:18,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:18,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-23 22:37:18,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:19,048 INFO L124 PetriNetUnfolderBase]: 344/936 cut-off events. [2024-11-23 22:37:19,049 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-23 22:37:19,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 936 events. 344/936 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6143 event pairs, 222 based on Foata normal form. 3/732 useless extension candidates. Maximal degree in co-relation 1462. Up to 533 conditions per place. [2024-11-23 22:37:19,056 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 29 selfloop transitions, 13 changer transitions 0/77 dead transitions. [2024-11-23 22:37:19,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 77 transitions, 310 flow [2024-11-23 22:37:19,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:37:19,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 22:37:19,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 415 transitions. [2024-11-23 22:37:19,059 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2024-11-23 22:37:19,059 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 172 flow. Second operand 10 states and 415 transitions. [2024-11-23 22:37:19,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 77 transitions, 310 flow [2024-11-23 22:37:19,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 264 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-23 22:37:19,063 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 224 flow [2024-11-23 22:37:19,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=224, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2024-11-23 22:37:19,064 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-11-23 22:37:19,064 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 224 flow [2024-11-23 22:37:19,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 38.083333333333336) internal successors, (457), 12 states have internal predecessors, (457), 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) [2024-11-23 22:37:19,064 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:19,064 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:19,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 22:37:19,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:19,265 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:19,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:19,265 INFO L85 PathProgramCache]: Analyzing trace with hash -906766866, now seen corresponding path program 1 times [2024-11-23 22:37:19,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:19,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249203624] [2024-11-23 22:37:19,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:19,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:19,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:19,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249203624] [2024-11-23 22:37:19,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249203624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:19,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:19,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:37:19,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106477165] [2024-11-23 22:37:19,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:19,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:37:19,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:19,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:37:19,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:37:19,399 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-23 22:37:19,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-11-23 22:37:19,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:19,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-23 22:37:19,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:19,742 INFO L124 PetriNetUnfolderBase]: 628/1452 cut-off events. [2024-11-23 22:37:19,742 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-11-23 22:37:19,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 1452 events. 628/1452 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9859 event pairs, 222 based on Foata normal form. 44/1202 useless extension candidates. Maximal degree in co-relation 2475. Up to 507 conditions per place. [2024-11-23 22:37:19,754 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 71 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2024-11-23 22:37:19,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 106 transitions, 438 flow [2024-11-23 22:37:19,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:37:19,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:37:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-11-23 22:37:19,756 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7107142857142857 [2024-11-23 22:37:19,756 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 224 flow. Second operand 4 states and 199 transitions. [2024-11-23 22:37:19,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 106 transitions, 438 flow [2024-11-23 22:37:19,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 106 transitions, 427 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-23 22:37:19,760 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 247 flow [2024-11-23 22:37:19,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2024-11-23 22:37:19,761 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2024-11-23 22:37:19,761 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 247 flow [2024-11-23 22:37:19,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-11-23 22:37:19,762 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:19,762 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:19,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 22:37:19,763 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:19,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:19,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1954998804, now seen corresponding path program 1 times [2024-11-23 22:37:19,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:19,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082930632] [2024-11-23 22:37:19,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:19,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:19,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:19,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082930632] [2024-11-23 22:37:19,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082930632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:19,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:19,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:37:19,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245623479] [2024-11-23 22:37:19,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:19,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:37:19,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:19,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:37:19,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:37:19,918 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 70 [2024-11-23 22:37:19,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2024-11-23 22:37:19,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:19,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 70 [2024-11-23 22:37:19,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:20,229 INFO L124 PetriNetUnfolderBase]: 511/1407 cut-off events. [2024-11-23 22:37:20,229 INFO L125 PetriNetUnfolderBase]: For 288/311 co-relation queries the response was YES. [2024-11-23 22:37:20,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2497 conditions, 1407 events. 511/1407 cut-off events. For 288/311 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 10177 event pairs, 320 based on Foata normal form. 35/1179 useless extension candidates. Maximal degree in co-relation 2461. Up to 660 conditions per place. [2024-11-23 22:37:20,243 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 66 selfloop transitions, 5 changer transitions 2/109 dead transitions. [2024-11-23 22:37:20,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 109 transitions, 459 flow [2024-11-23 22:37:20,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:37:20,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 22:37:20,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 258 transitions. [2024-11-23 22:37:20,245 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7371428571428571 [2024-11-23 22:37:20,245 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 247 flow. Second operand 5 states and 258 transitions. [2024-11-23 22:37:20,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 109 transitions, 459 flow [2024-11-23 22:37:20,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 109 transitions, 459 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 22:37:20,253 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 272 flow [2024-11-23 22:37:20,253 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-11-23 22:37:20,256 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 21 predicate places. [2024-11-23 22:37:20,257 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 272 flow [2024-11-23 22:37:20,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2024-11-23 22:37:20,258 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:20,258 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:20,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 22:37:20,258 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:20,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:20,259 INFO L85 PathProgramCache]: Analyzing trace with hash 298811343, now seen corresponding path program 1 times [2024-11-23 22:37:20,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:20,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257868105] [2024-11-23 22:37:20,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:20,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:20,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:20,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:20,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257868105] [2024-11-23 22:37:20,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257868105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:20,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:20,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:37:20,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477418591] [2024-11-23 22:37:20,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:20,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:37:20,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:20,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:37:20,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:37:20,373 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-23 22:37:20,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2024-11-23 22:37:20,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:20,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-23 22:37:20,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:20,711 INFO L124 PetriNetUnfolderBase]: 939/2223 cut-off events. [2024-11-23 22:37:20,711 INFO L125 PetriNetUnfolderBase]: For 817/845 co-relation queries the response was YES. [2024-11-23 22:37:20,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4442 conditions, 2223 events. 939/2223 cut-off events. For 817/845 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16373 event pairs, 343 based on Foata normal form. 80/1959 useless extension candidates. Maximal degree in co-relation 4403. Up to 804 conditions per place. [2024-11-23 22:37:20,732 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 81 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2024-11-23 22:37:20,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 116 transitions, 580 flow [2024-11-23 22:37:20,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:37:20,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:37:20,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2024-11-23 22:37:20,733 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7035714285714286 [2024-11-23 22:37:20,733 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 272 flow. Second operand 4 states and 197 transitions. [2024-11-23 22:37:20,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 116 transitions, 580 flow [2024-11-23 22:37:20,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 116 transitions, 575 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 22:37:20,739 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 301 flow [2024-11-23 22:37:20,740 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-11-23 22:37:20,740 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2024-11-23 22:37:20,740 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 301 flow [2024-11-23 22:37:20,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2024-11-23 22:37:20,741 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:20,741 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:20,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:37:20,741 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:20,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:20,741 INFO L85 PathProgramCache]: Analyzing trace with hash 673217646, now seen corresponding path program 1 times [2024-11-23 22:37:20,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:20,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868248814] [2024-11-23 22:37:20,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:20,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:20,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:20,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:20,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868248814] [2024-11-23 22:37:20,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868248814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:20,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:20,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:37:20,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762707265] [2024-11-23 22:37:20,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:20,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:37:20,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:20,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:37:20,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:37:20,853 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 70 [2024-11-23 22:37:20,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 301 flow. Second operand has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 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) [2024-11-23 22:37:20,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:20,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 70 [2024-11-23 22:37:20,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:21,172 INFO L124 PetriNetUnfolderBase]: 581/1587 cut-off events. [2024-11-23 22:37:21,172 INFO L125 PetriNetUnfolderBase]: For 769/811 co-relation queries the response was YES. [2024-11-23 22:37:21,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3268 conditions, 1587 events. 581/1587 cut-off events. For 769/811 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11918 event pairs, 397 based on Foata normal form. 31/1420 useless extension candidates. Maximal degree in co-relation 3227. Up to 847 conditions per place. [2024-11-23 22:37:21,184 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 42 selfloop transitions, 2 changer transitions 14/94 dead transitions. [2024-11-23 22:37:21,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 452 flow [2024-11-23 22:37:21,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:37:21,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 22:37:21,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 241 transitions. [2024-11-23 22:37:21,186 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6885714285714286 [2024-11-23 22:37:21,186 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 301 flow. Second operand 5 states and 241 transitions. [2024-11-23 22:37:21,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 452 flow [2024-11-23 22:37:21,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 22:37:21,193 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 294 flow [2024-11-23 22:37:21,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-11-23 22:37:21,195 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 30 predicate places. [2024-11-23 22:37:21,195 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 294 flow [2024-11-23 22:37:21,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 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) [2024-11-23 22:37:21,195 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:21,195 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:21,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 22:37:21,195 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:21,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:21,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1841421283, now seen corresponding path program 1 times [2024-11-23 22:37:21,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:21,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664810090] [2024-11-23 22:37:21,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:21,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:21,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:21,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:21,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664810090] [2024-11-23 22:37:21,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664810090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:21,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752661259] [2024-11-23 22:37:21,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:21,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:21,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:21,595 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:37:21,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 22:37:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:21,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-23 22:37:21,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:21,739 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 [2024-11-23 22:37:21,831 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 17 treesize of output 9 [2024-11-23 22:37:21,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:21,838 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:37:21,938 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 16 treesize of output 14 [2024-11-23 22:37:21,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-23 22:37:21,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:21,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752661259] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:37:21,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:37:21,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 22:37:21,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864281111] [2024-11-23 22:37:21,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:37:21,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:37:21,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:21,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:37:21,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:37:22,092 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2024-11-23 22:37:22,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 37.38461538461539) internal successors, (486), 13 states have internal predecessors, (486), 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) [2024-11-23 22:37:22,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:22,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2024-11-23 22:37:22,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:22,921 INFO L124 PetriNetUnfolderBase]: 1225/3179 cut-off events. [2024-11-23 22:37:22,922 INFO L125 PetriNetUnfolderBase]: For 1688/1779 co-relation queries the response was YES. [2024-11-23 22:37:22,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6710 conditions, 3179 events. 1225/3179 cut-off events. For 1688/1779 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 25027 event pairs, 338 based on Foata normal form. 53/2869 useless extension candidates. Maximal degree in co-relation 6680. Up to 707 conditions per place. [2024-11-23 22:37:22,949 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 103 selfloop transitions, 18 changer transitions 0/155 dead transitions. [2024-11-23 22:37:22,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 155 transitions, 816 flow [2024-11-23 22:37:22,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:37:22,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 22:37:22,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 461 transitions. [2024-11-23 22:37:22,952 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6585714285714286 [2024-11-23 22:37:22,952 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 294 flow. Second operand 10 states and 461 transitions. [2024-11-23 22:37:22,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 155 transitions, 816 flow [2024-11-23 22:37:22,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 155 transitions, 772 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-11-23 22:37:22,961 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 385 flow [2024-11-23 22:37:22,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=385, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2024-11-23 22:37:22,962 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 32 predicate places. [2024-11-23 22:37:22,962 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 385 flow [2024-11-23 22:37:22,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.38461538461539) internal successors, (486), 13 states have internal predecessors, (486), 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) [2024-11-23 22:37:22,963 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:22,963 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:22,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 22:37:23,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:23,167 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:23,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:23,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1249516119, now seen corresponding path program 1 times [2024-11-23 22:37:23,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:23,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393696821] [2024-11-23 22:37:23,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:23,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:23,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:23,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393696821] [2024-11-23 22:37:23,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393696821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:23,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675133791] [2024-11-23 22:37:23,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:23,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:23,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:23,446 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:37:23,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 22:37:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:23,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-23 22:37:23,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:23,550 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 [2024-11-23 22:37:23,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-23 22:37:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:23,633 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:37:23,726 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 14 treesize of output 12 [2024-11-23 22:37:23,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-23 22:37:23,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:23,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675133791] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:37:23,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:37:23,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 22:37:23,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760708432] [2024-11-23 22:37:23,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:37:23,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:37:23,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:23,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:37:23,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:37:23,827 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-11-23 22:37:23,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 385 flow. Second operand has 13 states, 13 states have (on average 35.53846153846154) internal successors, (462), 13 states have internal predecessors, (462), 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) [2024-11-23 22:37:23,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:23,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-11-23 22:37:23,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:24,607 INFO L124 PetriNetUnfolderBase]: 1485/3465 cut-off events. [2024-11-23 22:37:24,607 INFO L125 PetriNetUnfolderBase]: For 2650/2765 co-relation queries the response was YES. [2024-11-23 22:37:24,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7973 conditions, 3465 events. 1485/3465 cut-off events. For 2650/2765 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 26029 event pairs, 456 based on Foata normal form. 91/3212 useless extension candidates. Maximal degree in co-relation 7934. Up to 911 conditions per place. [2024-11-23 22:37:24,646 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 107 selfloop transitions, 18 changer transitions 0/156 dead transitions. [2024-11-23 22:37:24,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 156 transitions, 857 flow [2024-11-23 22:37:24,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:37:24,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 22:37:24,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 441 transitions. [2024-11-23 22:37:24,648 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-11-23 22:37:24,648 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 385 flow. Second operand 10 states and 441 transitions. [2024-11-23 22:37:24,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 156 transitions, 857 flow [2024-11-23 22:37:24,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 156 transitions, 845 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-23 22:37:24,657 INFO L231 Difference]: Finished difference. Result has 105 places, 91 transitions, 435 flow [2024-11-23 22:37:24,657 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=435, PETRI_PLACES=105, PETRI_TRANSITIONS=91} [2024-11-23 22:37:24,658 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 39 predicate places. [2024-11-23 22:37:24,658 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 91 transitions, 435 flow [2024-11-23 22:37:24,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.53846153846154) internal successors, (462), 13 states have internal predecessors, (462), 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) [2024-11-23 22:37:24,658 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:24,658 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:24,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 22:37:24,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:24,863 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:24,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:24,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1259251657, now seen corresponding path program 1 times [2024-11-23 22:37:24,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:24,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919201241] [2024-11-23 22:37:24,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:24,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:25,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:25,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:25,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919201241] [2024-11-23 22:37:25,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919201241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:25,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430924244] [2024-11-23 22:37:25,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:25,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:25,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:25,161 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:37:25,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 22:37:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:25,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-23 22:37:25,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:25,263 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 [2024-11-23 22:37:25,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-23 22:37:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:25,356 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:37:25,445 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 14 treesize of output 12 [2024-11-23 22:37:25,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-23 22:37:25,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:25,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430924244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:37:25,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:37:25,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 22:37:25,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565697610] [2024-11-23 22:37:25,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:37:25,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:37:25,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:25,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:37:25,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:37:25,582 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2024-11-23 22:37:25,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 91 transitions, 435 flow. Second operand has 13 states, 13 states have (on average 37.69230769230769) internal successors, (490), 13 states have internal predecessors, (490), 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) [2024-11-23 22:37:25,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:25,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2024-11-23 22:37:25,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:26,632 INFO L124 PetriNetUnfolderBase]: 2343/5937 cut-off events. [2024-11-23 22:37:26,632 INFO L125 PetriNetUnfolderBase]: For 7130/7337 co-relation queries the response was YES. [2024-11-23 22:37:26,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13860 conditions, 5937 events. 2343/5937 cut-off events. For 7130/7337 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 50218 event pairs, 608 based on Foata normal form. 131/5421 useless extension candidates. Maximal degree in co-relation 13819. Up to 1387 conditions per place. [2024-11-23 22:37:26,682 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 139 selfloop transitions, 18 changer transitions 0/194 dead transitions. [2024-11-23 22:37:26,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 194 transitions, 1369 flow [2024-11-23 22:37:26,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:37:26,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 22:37:26,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 457 transitions. [2024-11-23 22:37:26,684 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6528571428571428 [2024-11-23 22:37:26,684 INFO L175 Difference]: Start difference. First operand has 105 places, 91 transitions, 435 flow. Second operand 10 states and 457 transitions. [2024-11-23 22:37:26,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 194 transitions, 1369 flow [2024-11-23 22:37:26,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 194 transitions, 1297 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-23 22:37:26,700 INFO L231 Difference]: Finished difference. Result has 110 places, 100 transitions, 518 flow [2024-11-23 22:37:26,700 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=518, PETRI_PLACES=110, PETRI_TRANSITIONS=100} [2024-11-23 22:37:26,702 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 44 predicate places. [2024-11-23 22:37:26,702 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 100 transitions, 518 flow [2024-11-23 22:37:26,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.69230769230769) internal successors, (490), 13 states have internal predecessors, (490), 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) [2024-11-23 22:37:26,702 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:26,702 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:26,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 22:37:26,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 22:37:26,903 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:26,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:26,903 INFO L85 PathProgramCache]: Analyzing trace with hash -80293440, now seen corresponding path program 1 times [2024-11-23 22:37:26,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:26,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743705442] [2024-11-23 22:37:26,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:26,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:37:26,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:26,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743705442] [2024-11-23 22:37:26,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743705442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:26,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:26,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:37:26,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650753933] [2024-11-23 22:37:26,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:26,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:37:26,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:26,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:37:26,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:37:26,997 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-23 22:37:26,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 100 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:37:26,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:26,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-23 22:37:26,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:27,810 INFO L124 PetriNetUnfolderBase]: 2693/6576 cut-off events. [2024-11-23 22:37:27,810 INFO L125 PetriNetUnfolderBase]: For 9578/9813 co-relation queries the response was YES. [2024-11-23 22:37:27,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16878 conditions, 6576 events. 2693/6576 cut-off events. For 9578/9813 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 55614 event pairs, 1059 based on Foata normal form. 203/6091 useless extension candidates. Maximal degree in co-relation 16835. Up to 2290 conditions per place. [2024-11-23 22:37:27,877 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 105 selfloop transitions, 8 changer transitions 0/145 dead transitions. [2024-11-23 22:37:27,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 145 transitions, 985 flow [2024-11-23 22:37:27,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:37:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:37:27,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2024-11-23 22:37:27,880 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-23 22:37:27,880 INFO L175 Difference]: Start difference. First operand has 110 places, 100 transitions, 518 flow. Second operand 4 states and 196 transitions. [2024-11-23 22:37:27,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 145 transitions, 985 flow [2024-11-23 22:37:27,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 145 transitions, 964 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-23 22:37:27,903 INFO L231 Difference]: Finished difference. Result has 108 places, 98 transitions, 500 flow [2024-11-23 22:37:27,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=500, PETRI_PLACES=108, PETRI_TRANSITIONS=98} [2024-11-23 22:37:27,904 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 42 predicate places. [2024-11-23 22:37:27,905 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 98 transitions, 500 flow [2024-11-23 22:37:27,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:37:27,905 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:27,905 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:27,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 22:37:27,906 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:27,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:27,906 INFO L85 PathProgramCache]: Analyzing trace with hash -80294465, now seen corresponding path program 1 times [2024-11-23 22:37:27,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:27,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787069453] [2024-11-23 22:37:27,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:27,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 22:37:28,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:28,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787069453] [2024-11-23 22:37:28,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787069453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:28,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:28,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:37:28,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880037877] [2024-11-23 22:37:28,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:28,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:37:28,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:28,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:37:28,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:37:28,077 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-23 22:37:28,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 98 transitions, 500 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 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) [2024-11-23 22:37:28,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:28,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-23 22:37:28,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:29,181 INFO L124 PetriNetUnfolderBase]: 3978/9268 cut-off events. [2024-11-23 22:37:29,181 INFO L125 PetriNetUnfolderBase]: For 12020/12363 co-relation queries the response was YES. [2024-11-23 22:37:29,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23348 conditions, 9268 events. 3978/9268 cut-off events. For 12020/12363 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 80374 event pairs, 938 based on Foata normal form. 166/8671 useless extension candidates. Maximal degree in co-relation 23309. Up to 3970 conditions per place. [2024-11-23 22:37:29,270 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 165 selfloop transitions, 16 changer transitions 0/213 dead transitions. [2024-11-23 22:37:29,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 213 transitions, 1457 flow [2024-11-23 22:37:29,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:37:29,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 22:37:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 357 transitions. [2024-11-23 22:37:29,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7285714285714285 [2024-11-23 22:37:29,272 INFO L175 Difference]: Start difference. First operand has 108 places, 98 transitions, 500 flow. Second operand 7 states and 357 transitions. [2024-11-23 22:37:29,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 213 transitions, 1457 flow [2024-11-23 22:37:29,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 213 transitions, 1437 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 22:37:29,294 INFO L231 Difference]: Finished difference. Result has 117 places, 111 transitions, 623 flow [2024-11-23 22:37:29,295 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=623, PETRI_PLACES=117, PETRI_TRANSITIONS=111} [2024-11-23 22:37:29,295 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 51 predicate places. [2024-11-23 22:37:29,295 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 111 transitions, 623 flow [2024-11-23 22:37:29,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 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) [2024-11-23 22:37:29,295 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:29,295 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:29,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 22:37:29,296 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:29,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:29,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1805839468, now seen corresponding path program 1 times [2024-11-23 22:37:29,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:29,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340978434] [2024-11-23 22:37:29,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:29,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:29,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 22:37:29,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:29,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340978434] [2024-11-23 22:37:29,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340978434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:29,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:29,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:37:29,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306374879] [2024-11-23 22:37:29,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:29,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:37:29,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:29,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:37:29,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:37:29,433 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-23 22:37:29,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 111 transitions, 623 flow. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 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) [2024-11-23 22:37:29,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:29,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-23 22:37:29,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:30,998 INFO L124 PetriNetUnfolderBase]: 5162/11434 cut-off events. [2024-11-23 22:37:30,998 INFO L125 PetriNetUnfolderBase]: For 19478/20013 co-relation queries the response was YES. [2024-11-23 22:37:31,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31222 conditions, 11434 events. 5162/11434 cut-off events. For 19478/20013 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 100369 event pairs, 969 based on Foata normal form. 318/10751 useless extension candidates. Maximal degree in co-relation 31177. Up to 4317 conditions per place. [2024-11-23 22:37:31,091 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 225 selfloop transitions, 31 changer transitions 0/287 dead transitions. [2024-11-23 22:37:31,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 287 transitions, 2083 flow [2024-11-23 22:37:31,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:37:31,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:37:31,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 497 transitions. [2024-11-23 22:37:31,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-11-23 22:37:31,093 INFO L175 Difference]: Start difference. First operand has 117 places, 111 transitions, 623 flow. Second operand 11 states and 497 transitions. [2024-11-23 22:37:31,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 287 transitions, 2083 flow [2024-11-23 22:37:31,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 287 transitions, 2081 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-23 22:37:31,163 INFO L231 Difference]: Finished difference. Result has 130 places, 131 transitions, 843 flow [2024-11-23 22:37:31,164 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=843, PETRI_PLACES=130, PETRI_TRANSITIONS=131} [2024-11-23 22:37:31,164 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 64 predicate places. [2024-11-23 22:37:31,165 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 131 transitions, 843 flow [2024-11-23 22:37:31,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 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) [2024-11-23 22:37:31,165 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:31,165 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:31,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 22:37:31,165 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:31,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:31,166 INFO L85 PathProgramCache]: Analyzing trace with hash -382126870, now seen corresponding path program 1 times [2024-11-23 22:37:31,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:31,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844511351] [2024-11-23 22:37:31,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:31,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:31,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:31,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:31,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844511351] [2024-11-23 22:37:31,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844511351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:31,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584017039] [2024-11-23 22:37:31,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:31,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:31,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:31,431 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:37:31,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 22:37:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:31,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-23 22:37:31,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:31,529 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 [2024-11-23 22:37:31,623 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 17 treesize of output 9 [2024-11-23 22:37:31,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:31,634 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:37:31,733 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 16 treesize of output 14 [2024-11-23 22:37:31,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-23 22:37:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:31,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584017039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:37:31,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:37:31,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 22:37:31,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729168254] [2024-11-23 22:37:31,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:37:31,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:37:31,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:31,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:37:31,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:37:31,828 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-11-23 22:37:31,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 131 transitions, 843 flow. Second operand has 13 states, 13 states have (on average 35.84615384615385) internal successors, (466), 13 states have internal predecessors, (466), 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) [2024-11-23 22:37:31,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:31,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-11-23 22:37:31,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:33,412 INFO L124 PetriNetUnfolderBase]: 3690/8547 cut-off events. [2024-11-23 22:37:33,412 INFO L125 PetriNetUnfolderBase]: For 20724/21147 co-relation queries the response was YES. [2024-11-23 22:37:33,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23895 conditions, 8547 events. 3690/8547 cut-off events. For 20724/21147 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 74256 event pairs, 931 based on Foata normal form. 233/7996 useless extension candidates. Maximal degree in co-relation 23845. Up to 2561 conditions per place. [2024-11-23 22:37:33,503 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 186 selfloop transitions, 18 changer transitions 0/255 dead transitions. [2024-11-23 22:37:33,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 255 transitions, 2181 flow [2024-11-23 22:37:33,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:37:33,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 22:37:33,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 437 transitions. [2024-11-23 22:37:33,506 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6242857142857143 [2024-11-23 22:37:33,506 INFO L175 Difference]: Start difference. First operand has 130 places, 131 transitions, 843 flow. Second operand 10 states and 437 transitions. [2024-11-23 22:37:33,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 255 transitions, 2181 flow [2024-11-23 22:37:33,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 255 transitions, 2163 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-23 22:37:33,546 INFO L231 Difference]: Finished difference. Result has 141 places, 133 transitions, 897 flow [2024-11-23 22:37:33,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=897, PETRI_PLACES=141, PETRI_TRANSITIONS=133} [2024-11-23 22:37:33,548 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 75 predicate places. [2024-11-23 22:37:33,548 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 133 transitions, 897 flow [2024-11-23 22:37:33,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.84615384615385) internal successors, (466), 13 states have internal predecessors, (466), 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) [2024-11-23 22:37:33,549 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:33,549 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:33,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 22:37:33,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-23 22:37:33,750 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:33,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:33,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1093766341, now seen corresponding path program 1 times [2024-11-23 22:37:33,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:33,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146466851] [2024-11-23 22:37:33,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:33,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:33,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:37:33,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:33,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146466851] [2024-11-23 22:37:33,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146466851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:33,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:33,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:37:33,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182617089] [2024-11-23 22:37:33,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:33,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:37:33,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:33,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:37:33,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:37:33,899 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 70 [2024-11-23 22:37:33,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 133 transitions, 897 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-11-23 22:37:33,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:33,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 70 [2024-11-23 22:37:33,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:35,353 INFO L124 PetriNetUnfolderBase]: 4053/9109 cut-off events. [2024-11-23 22:37:35,353 INFO L125 PetriNetUnfolderBase]: For 23106/23388 co-relation queries the response was YES. [2024-11-23 22:37:35,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28195 conditions, 9109 events. 4053/9109 cut-off events. For 23106/23388 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 77827 event pairs, 1543 based on Foata normal form. 212/8703 useless extension candidates. Maximal degree in co-relation 28139. Up to 3402 conditions per place. [2024-11-23 22:37:35,417 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 163 selfloop transitions, 20 changer transitions 0/226 dead transitions. [2024-11-23 22:37:35,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 226 transitions, 1832 flow [2024-11-23 22:37:35,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:37:35,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 22:37:35,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 279 transitions. [2024-11-23 22:37:35,419 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-11-23 22:37:35,419 INFO L175 Difference]: Start difference. First operand has 141 places, 133 transitions, 897 flow. Second operand 6 states and 279 transitions. [2024-11-23 22:37:35,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 226 transitions, 1832 flow [2024-11-23 22:37:35,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 226 transitions, 1738 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-11-23 22:37:35,518 INFO L231 Difference]: Finished difference. Result has 138 places, 134 transitions, 910 flow [2024-11-23 22:37:35,518 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=910, PETRI_PLACES=138, PETRI_TRANSITIONS=134} [2024-11-23 22:37:35,519 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 72 predicate places. [2024-11-23 22:37:35,519 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 134 transitions, 910 flow [2024-11-23 22:37:35,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-11-23 22:37:35,519 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:35,519 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:35,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 22:37:35,519 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:35,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:35,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1093765316, now seen corresponding path program 1 times [2024-11-23 22:37:35,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:35,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789625555] [2024-11-23 22:37:35,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:35,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:37:35,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:35,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789625555] [2024-11-23 22:37:35,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789625555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:35,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:35,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:37:35,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384627949] [2024-11-23 22:37:35,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:35,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:37:35,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:35,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:37:35,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:37:35,619 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-11-23 22:37:35,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 134 transitions, 910 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-11-23 22:37:35,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:35,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-11-23 22:37:35,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:37,007 INFO L124 PetriNetUnfolderBase]: 4375/9803 cut-off events. [2024-11-23 22:37:37,007 INFO L125 PetriNetUnfolderBase]: For 23414/23668 co-relation queries the response was YES. [2024-11-23 22:37:37,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30358 conditions, 9803 events. 4375/9803 cut-off events. For 23414/23668 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 84575 event pairs, 1757 based on Foata normal form. 342/9477 useless extension candidates. Maximal degree in co-relation 30306. Up to 3858 conditions per place. [2024-11-23 22:37:37,051 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 115 selfloop transitions, 17 changer transitions 0/180 dead transitions. [2024-11-23 22:37:37,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 180 transitions, 1434 flow [2024-11-23 22:37:37,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:37:37,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:37:37,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-11-23 22:37:37,053 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-11-23 22:37:37,053 INFO L175 Difference]: Start difference. First operand has 138 places, 134 transitions, 910 flow. Second operand 4 states and 200 transitions. [2024-11-23 22:37:37,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 180 transitions, 1434 flow [2024-11-23 22:37:37,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 180 transitions, 1388 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-23 22:37:37,103 INFO L231 Difference]: Finished difference. Result has 139 places, 134 transitions, 925 flow [2024-11-23 22:37:37,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=925, PETRI_PLACES=139, PETRI_TRANSITIONS=134} [2024-11-23 22:37:37,104 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 73 predicate places. [2024-11-23 22:37:37,104 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 134 transitions, 925 flow [2024-11-23 22:37:37,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-11-23 22:37:37,104 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:37,104 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:37,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 22:37:37,104 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:37,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:37,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1038968505, now seen corresponding path program 1 times [2024-11-23 22:37:37,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:37,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027691567] [2024-11-23 22:37:37,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:37,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 22:37:37,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:37,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027691567] [2024-11-23 22:37:37,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027691567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:37,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:37,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:37:37,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596245809] [2024-11-23 22:37:37,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:37,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:37:37,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:37,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:37:37,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:37:37,219 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-23 22:37:37,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 134 transitions, 925 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 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) [2024-11-23 22:37:37,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:37,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-23 22:37:37,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:38,480 INFO L124 PetriNetUnfolderBase]: 4854/10619 cut-off events. [2024-11-23 22:37:38,480 INFO L125 PetriNetUnfolderBase]: For 33213/33755 co-relation queries the response was YES. [2024-11-23 22:37:38,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33565 conditions, 10619 events. 4854/10619 cut-off events. For 33213/33755 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 91449 event pairs, 1188 based on Foata normal form. 356/10459 useless extension candidates. Maximal degree in co-relation 33513. Up to 5119 conditions per place. [2024-11-23 22:37:38,592 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 194 selfloop transitions, 23 changer transitions 0/260 dead transitions. [2024-11-23 22:37:38,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 260 transitions, 2282 flow [2024-11-23 22:37:38,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:37:38,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 22:37:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 353 transitions. [2024-11-23 22:37:38,597 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7204081632653061 [2024-11-23 22:37:38,597 INFO L175 Difference]: Start difference. First operand has 139 places, 134 transitions, 925 flow. Second operand 7 states and 353 transitions. [2024-11-23 22:37:38,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 260 transitions, 2282 flow [2024-11-23 22:37:38,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 260 transitions, 2239 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 22:37:38,676 INFO L231 Difference]: Finished difference. Result has 148 places, 145 transitions, 1068 flow [2024-11-23 22:37:38,677 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1068, PETRI_PLACES=148, PETRI_TRANSITIONS=145} [2024-11-23 22:37:38,678 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 82 predicate places. [2024-11-23 22:37:38,678 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 145 transitions, 1068 flow [2024-11-23 22:37:38,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 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) [2024-11-23 22:37:38,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:38,678 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:38,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 22:37:38,679 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:38,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:38,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1038969530, now seen corresponding path program 1 times [2024-11-23 22:37:38,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:38,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496098290] [2024-11-23 22:37:38,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:38,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:38,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:37:38,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:38,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496098290] [2024-11-23 22:37:38,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496098290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:38,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:38,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:37:38,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342253337] [2024-11-23 22:37:38,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:38,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:37:38,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:38,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:37:38,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:37:38,750 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-23 22:37:38,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 145 transitions, 1068 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2024-11-23 22:37:38,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:38,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-23 22:37:38,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:39,829 INFO L124 PetriNetUnfolderBase]: 3876/9219 cut-off events. [2024-11-23 22:37:39,829 INFO L125 PetriNetUnfolderBase]: For 28627/29045 co-relation queries the response was YES. [2024-11-23 22:37:39,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30318 conditions, 9219 events. 3876/9219 cut-off events. For 28627/29045 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 82397 event pairs, 1420 based on Foata normal form. 386/9141 useless extension candidates. Maximal degree in co-relation 30260. Up to 3214 conditions per place. [2024-11-23 22:37:39,906 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 152 selfloop transitions, 14 changer transitions 0/220 dead transitions. [2024-11-23 22:37:39,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 220 transitions, 2033 flow [2024-11-23 22:37:39,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:37:39,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:37:39,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2024-11-23 22:37:39,908 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6928571428571428 [2024-11-23 22:37:39,908 INFO L175 Difference]: Start difference. First operand has 148 places, 145 transitions, 1068 flow. Second operand 4 states and 194 transitions. [2024-11-23 22:37:39,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 220 transitions, 2033 flow [2024-11-23 22:37:40,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 220 transitions, 2025 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-23 22:37:40,014 INFO L231 Difference]: Finished difference. Result has 150 places, 143 transitions, 1071 flow [2024-11-23 22:37:40,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1071, PETRI_PLACES=150, PETRI_TRANSITIONS=143} [2024-11-23 22:37:40,015 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 84 predicate places. [2024-11-23 22:37:40,015 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 143 transitions, 1071 flow [2024-11-23 22:37:40,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2024-11-23 22:37:40,015 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:40,015 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-23 22:37:40,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 22:37:40,015 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:40,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:40,016 INFO L85 PathProgramCache]: Analyzing trace with hash -197781785, now seen corresponding path program 2 times [2024-11-23 22:37:40,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:40,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945357523] [2024-11-23 22:37:40,016 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:37:40,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:40,031 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:37:40,031 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:37:40,082 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 22:37:40,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:40,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945357523] [2024-11-23 22:37:40,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945357523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:40,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819479052] [2024-11-23 22:37:40,082 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:37:40,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:40,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:40,086 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:37:40,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 22:37:40,157 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:37:40,157 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:37:40,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 22:37:40,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:40,187 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 22:37:40,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:37:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 22:37:40,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819479052] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:37:40,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:37:40,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-23 22:37:40,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928111105] [2024-11-23 22:37:40,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:37:40,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:37:40,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:40,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:37:40,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:37:40,220 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-23 22:37:40,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 143 transitions, 1071 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:37:40,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:40,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-23 22:37:40,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:41,308 INFO L124 PetriNetUnfolderBase]: 3060/8197 cut-off events. [2024-11-23 22:37:41,308 INFO L125 PetriNetUnfolderBase]: For 24738/25067 co-relation queries the response was YES. [2024-11-23 22:37:41,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26683 conditions, 8197 events. 3060/8197 cut-off events. For 24738/25067 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 77164 event pairs, 1992 based on Foata normal form. 195/7924 useless extension candidates. Maximal degree in co-relation 26630. Up to 4734 conditions per place. [2024-11-23 22:37:41,403 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 65 selfloop transitions, 15 changer transitions 0/142 dead transitions. [2024-11-23 22:37:41,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 142 transitions, 1221 flow [2024-11-23 22:37:41,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:37:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:37:41,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 178 transitions. [2024-11-23 22:37:41,405 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-11-23 22:37:41,405 INFO L175 Difference]: Start difference. First operand has 150 places, 143 transitions, 1071 flow. Second operand 4 states and 178 transitions. [2024-11-23 22:37:41,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 142 transitions, 1221 flow [2024-11-23 22:37:41,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 142 transitions, 1191 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-23 22:37:41,508 INFO L231 Difference]: Finished difference. Result has 146 places, 142 transitions, 1061 flow [2024-11-23 22:37:41,508 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1061, PETRI_PLACES=146, PETRI_TRANSITIONS=142} [2024-11-23 22:37:41,508 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 80 predicate places. [2024-11-23 22:37:41,509 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 142 transitions, 1061 flow [2024-11-23 22:37:41,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:37:41,509 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:41,509 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:41,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 22:37:41,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:41,714 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:41,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:41,714 INFO L85 PathProgramCache]: Analyzing trace with hash 275487911, now seen corresponding path program 1 times [2024-11-23 22:37:41,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:41,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659789061] [2024-11-23 22:37:41,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:41,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:37:41,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:41,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659789061] [2024-11-23 22:37:41,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659789061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:41,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:41,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:37:41,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681959596] [2024-11-23 22:37:41,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:41,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:37:41,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:41,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:37:41,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:37:41,806 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-11-23 22:37:41,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 142 transitions, 1061 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-11-23 22:37:41,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:41,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-11-23 22:37:41,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:43,092 INFO L124 PetriNetUnfolderBase]: 4288/9371 cut-off events. [2024-11-23 22:37:43,092 INFO L125 PetriNetUnfolderBase]: For 29405/29862 co-relation queries the response was YES. [2024-11-23 22:37:43,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31185 conditions, 9371 events. 4288/9371 cut-off events. For 29405/29862 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 79978 event pairs, 2218 based on Foata normal form. 375/9332 useless extension candidates. Maximal degree in co-relation 31066. Up to 5129 conditions per place. [2024-11-23 22:37:43,181 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 138 selfloop transitions, 8 changer transitions 0/197 dead transitions. [2024-11-23 22:37:43,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 197 transitions, 1727 flow [2024-11-23 22:37:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:37:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:37:43,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-11-23 22:37:43,182 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.725 [2024-11-23 22:37:43,182 INFO L175 Difference]: Start difference. First operand has 146 places, 142 transitions, 1061 flow. Second operand 4 states and 203 transitions. [2024-11-23 22:37:43,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 197 transitions, 1727 flow [2024-11-23 22:37:43,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 197 transitions, 1691 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 22:37:43,263 INFO L231 Difference]: Finished difference. Result has 147 places, 143 transitions, 1072 flow [2024-11-23 22:37:43,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1072, PETRI_PLACES=147, PETRI_TRANSITIONS=143} [2024-11-23 22:37:43,264 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 81 predicate places. [2024-11-23 22:37:43,264 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 143 transitions, 1072 flow [2024-11-23 22:37:43,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-11-23 22:37:43,264 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:43,264 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:43,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 22:37:43,265 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:43,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:43,265 INFO L85 PathProgramCache]: Analyzing trace with hash 2143253197, now seen corresponding path program 1 times [2024-11-23 22:37:43,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:43,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761328164] [2024-11-23 22:37:43,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:43,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 22:37:43,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:43,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761328164] [2024-11-23 22:37:43,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761328164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:43,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:43,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:37:43,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002488576] [2024-11-23 22:37:43,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:43,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:37:43,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:43,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:37:43,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:37:43,399 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-23 22:37:43,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 143 transitions, 1072 flow. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 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) [2024-11-23 22:37:43,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:43,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-23 22:37:43,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:44,832 INFO L124 PetriNetUnfolderBase]: 6301/12880 cut-off events. [2024-11-23 22:37:44,833 INFO L125 PetriNetUnfolderBase]: For 52765/53581 co-relation queries the response was YES. [2024-11-23 22:37:44,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44429 conditions, 12880 events. 6301/12880 cut-off events. For 52765/53581 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 109484 event pairs, 1278 based on Foata normal form. 575/12786 useless extension candidates. Maximal degree in co-relation 44325. Up to 5666 conditions per place. [2024-11-23 22:37:44,945 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 268 selfloop transitions, 38 changer transitions 0/345 dead transitions. [2024-11-23 22:37:44,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 345 transitions, 3197 flow [2024-11-23 22:37:44,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:37:44,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:37:44,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 495 transitions. [2024-11-23 22:37:44,947 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-23 22:37:44,947 INFO L175 Difference]: Start difference. First operand has 147 places, 143 transitions, 1072 flow. Second operand 11 states and 495 transitions. [2024-11-23 22:37:44,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 345 transitions, 3197 flow [2024-11-23 22:37:45,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 345 transitions, 3177 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-11-23 22:37:45,125 INFO L231 Difference]: Finished difference. Result has 160 places, 163 transitions, 1348 flow [2024-11-23 22:37:45,125 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1348, PETRI_PLACES=160, PETRI_TRANSITIONS=163} [2024-11-23 22:37:45,125 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 94 predicate places. [2024-11-23 22:37:45,125 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 163 transitions, 1348 flow [2024-11-23 22:37:45,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 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) [2024-11-23 22:37:45,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:45,126 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:45,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 22:37:45,126 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:45,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:45,127 INFO L85 PathProgramCache]: Analyzing trace with hash -996174590, now seen corresponding path program 1 times [2024-11-23 22:37:45,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:45,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469806190] [2024-11-23 22:37:45,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:45,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:37:45,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:45,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469806190] [2024-11-23 22:37:45,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469806190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:45,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:45,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:37:45,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627879341] [2024-11-23 22:37:45,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:45,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:37:45,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:45,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:37:45,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:37:45,176 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-23 22:37:45,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 163 transitions, 1348 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2024-11-23 22:37:45,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:45,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-23 22:37:45,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:46,536 INFO L124 PetriNetUnfolderBase]: 3690/9393 cut-off events. [2024-11-23 22:37:46,536 INFO L125 PetriNetUnfolderBase]: For 37745/38181 co-relation queries the response was YES. [2024-11-23 22:37:46,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33059 conditions, 9393 events. 3690/9393 cut-off events. For 37745/38181 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 88263 event pairs, 1599 based on Foata normal form. 378/9441 useless extension candidates. Maximal degree in co-relation 32950. Up to 3233 conditions per place. [2024-11-23 22:37:46,617 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 161 selfloop transitions, 4 changer transitions 0/235 dead transitions. [2024-11-23 22:37:46,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 235 transitions, 2224 flow [2024-11-23 22:37:46,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:37:46,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:37:46,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-23 22:37:46,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2024-11-23 22:37:46,619 INFO L175 Difference]: Start difference. First operand has 160 places, 163 transitions, 1348 flow. Second operand 4 states and 216 transitions. [2024-11-23 22:37:46,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 235 transitions, 2224 flow [2024-11-23 22:37:46,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 235 transitions, 2208 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-11-23 22:37:46,741 INFO L231 Difference]: Finished difference. Result has 165 places, 164 transitions, 1359 flow [2024-11-23 22:37:46,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1359, PETRI_PLACES=165, PETRI_TRANSITIONS=164} [2024-11-23 22:37:46,742 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 99 predicate places. [2024-11-23 22:37:46,742 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 164 transitions, 1359 flow [2024-11-23 22:37:46,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2024-11-23 22:37:46,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:46,742 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:46,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 22:37:46,742 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:46,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:46,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1331310946, now seen corresponding path program 1 times [2024-11-23 22:37:46,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:46,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164861696] [2024-11-23 22:37:46,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:46,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:46,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:37:46,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:46,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164861696] [2024-11-23 22:37:46,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164861696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:46,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:46,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:37:46,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128642001] [2024-11-23 22:37:46,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:46,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:37:46,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:46,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:37:46,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:37:46,827 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-11-23 22:37:46,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 164 transitions, 1359 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 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) [2024-11-23 22:37:46,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:46,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-11-23 22:37:46,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:48,047 INFO L124 PetriNetUnfolderBase]: 5411/11420 cut-off events. [2024-11-23 22:37:48,047 INFO L125 PetriNetUnfolderBase]: For 48854/49492 co-relation queries the response was YES. [2024-11-23 22:37:48,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42017 conditions, 11420 events. 5411/11420 cut-off events. For 48854/49492 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 97471 event pairs, 2037 based on Foata normal form. 534/11545 useless extension candidates. Maximal degree in co-relation 41905. Up to 4855 conditions per place. [2024-11-23 22:37:48,123 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 166 selfloop transitions, 17 changer transitions 0/245 dead transitions. [2024-11-23 22:37:48,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 245 transitions, 2459 flow [2024-11-23 22:37:48,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:37:48,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:37:48,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-11-23 22:37:48,124 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7071428571428572 [2024-11-23 22:37:48,124 INFO L175 Difference]: Start difference. First operand has 165 places, 164 transitions, 1359 flow. Second operand 4 states and 198 transitions. [2024-11-23 22:37:48,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 245 transitions, 2459 flow [2024-11-23 22:37:48,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 245 transitions, 2444 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 22:37:48,235 INFO L231 Difference]: Finished difference. Result has 168 places, 164 transitions, 1411 flow [2024-11-23 22:37:48,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1411, PETRI_PLACES=168, PETRI_TRANSITIONS=164} [2024-11-23 22:37:48,236 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 102 predicate places. [2024-11-23 22:37:48,236 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 164 transitions, 1411 flow [2024-11-23 22:37:48,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 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) [2024-11-23 22:37:48,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:48,236 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:48,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 22:37:48,236 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:48,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:48,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1331309921, now seen corresponding path program 1 times [2024-11-23 22:37:48,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:48,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751219425] [2024-11-23 22:37:48,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:48,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:48,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:37:48,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:48,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751219425] [2024-11-23 22:37:48,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751219425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:48,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:48,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:37:48,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447968037] [2024-11-23 22:37:48,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:48,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:37:48,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:48,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:37:48,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:37:48,325 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 70 [2024-11-23 22:37:48,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 164 transitions, 1411 flow. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 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) [2024-11-23 22:37:48,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:48,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 70 [2024-11-23 22:37:48,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:49,499 INFO L124 PetriNetUnfolderBase]: 4864/10368 cut-off events. [2024-11-23 22:37:49,499 INFO L125 PetriNetUnfolderBase]: For 50161/50732 co-relation queries the response was YES. [2024-11-23 22:37:49,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39870 conditions, 10368 events. 4864/10368 cut-off events. For 50161/50732 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 87563 event pairs, 1711 based on Foata normal form. 362/10438 useless extension candidates. Maximal degree in co-relation 39758. Up to 4217 conditions per place. [2024-11-23 22:37:49,577 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 249 selfloop transitions, 20 changer transitions 0/325 dead transitions. [2024-11-23 22:37:49,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 325 transitions, 3402 flow [2024-11-23 22:37:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:37:49,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 22:37:49,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2024-11-23 22:37:49,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-11-23 22:37:49,579 INFO L175 Difference]: Start difference. First operand has 168 places, 164 transitions, 1411 flow. Second operand 6 states and 275 transitions. [2024-11-23 22:37:49,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 325 transitions, 3402 flow [2024-11-23 22:37:49,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 325 transitions, 3351 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-23 22:37:49,716 INFO L231 Difference]: Finished difference. Result has 170 places, 165 transitions, 1419 flow [2024-11-23 22:37:49,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1419, PETRI_PLACES=170, PETRI_TRANSITIONS=165} [2024-11-23 22:37:49,716 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 104 predicate places. [2024-11-23 22:37:49,716 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 165 transitions, 1419 flow [2024-11-23 22:37:49,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 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) [2024-11-23 22:37:49,717 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:49,717 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:49,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 22:37:49,717 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:49,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:49,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1887432152, now seen corresponding path program 1 times [2024-11-23 22:37:49,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:49,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853757016] [2024-11-23 22:37:49,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:49,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:49,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:37:49,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:49,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853757016] [2024-11-23 22:37:49,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853757016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:49,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:49,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:37:49,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174717061] [2024-11-23 22:37:49,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:49,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:37:49,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:49,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:37:49,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:37:49,799 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-11-23 22:37:49,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 165 transitions, 1419 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2024-11-23 22:37:49,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:49,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-11-23 22:37:49,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:51,209 INFO L124 PetriNetUnfolderBase]: 4836/10282 cut-off events. [2024-11-23 22:37:51,209 INFO L125 PetriNetUnfolderBase]: For 52348/52954 co-relation queries the response was YES. [2024-11-23 22:37:51,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40220 conditions, 10282 events. 4836/10282 cut-off events. For 52348/52954 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 86762 event pairs, 2474 based on Foata normal form. 510/10568 useless extension candidates. Maximal degree in co-relation 40108. Up to 5897 conditions per place. [2024-11-23 22:37:51,288 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 178 selfloop transitions, 8 changer transitions 0/246 dead transitions. [2024-11-23 22:37:51,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 246 transitions, 2535 flow [2024-11-23 22:37:51,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:37:51,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:37:51,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2024-11-23 22:37:51,289 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7178571428571429 [2024-11-23 22:37:51,289 INFO L175 Difference]: Start difference. First operand has 170 places, 165 transitions, 1419 flow. Second operand 4 states and 201 transitions. [2024-11-23 22:37:51,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 246 transitions, 2535 flow [2024-11-23 22:37:51,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 246 transitions, 2495 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-23 22:37:51,399 INFO L231 Difference]: Finished difference. Result has 171 places, 166 transitions, 1426 flow [2024-11-23 22:37:51,399 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1426, PETRI_PLACES=171, PETRI_TRANSITIONS=166} [2024-11-23 22:37:51,400 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 105 predicate places. [2024-11-23 22:37:51,400 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 166 transitions, 1426 flow [2024-11-23 22:37:51,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2024-11-23 22:37:51,401 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:51,401 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:51,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 22:37:51,401 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:51,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:51,402 INFO L85 PathProgramCache]: Analyzing trace with hash 672780220, now seen corresponding path program 1 times [2024-11-23 22:37:51,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:51,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260875368] [2024-11-23 22:37:51,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:51,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:37:51,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:51,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260875368] [2024-11-23 22:37:51,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260875368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:51,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:51,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:37:51,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947837654] [2024-11-23 22:37:51,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:51,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:37:51,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:51,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:37:51,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:37:51,498 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-23 22:37:51,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 166 transitions, 1426 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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) [2024-11-23 22:37:51,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:51,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-23 22:37:51,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:52,583 INFO L124 PetriNetUnfolderBase]: 3675/8616 cut-off events. [2024-11-23 22:37:52,583 INFO L125 PetriNetUnfolderBase]: For 43890/44390 co-relation queries the response was YES. [2024-11-23 22:37:52,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34081 conditions, 8616 events. 3675/8616 cut-off events. For 43890/44390 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 76077 event pairs, 1285 based on Foata normal form. 401/8952 useless extension candidates. Maximal degree in co-relation 33969. Up to 3167 conditions per place. [2024-11-23 22:37:52,667 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 171 selfloop transitions, 4 changer transitions 0/244 dead transitions. [2024-11-23 22:37:52,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 244 transitions, 2456 flow [2024-11-23 22:37:52,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:37:52,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:37:52,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-11-23 22:37:52,668 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2024-11-23 22:37:52,669 INFO L175 Difference]: Start difference. First operand has 171 places, 166 transitions, 1426 flow. Second operand 4 states and 214 transitions. [2024-11-23 22:37:52,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 244 transitions, 2456 flow [2024-11-23 22:37:52,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 244 transitions, 2452 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-23 22:37:52,806 INFO L231 Difference]: Finished difference. Result has 176 places, 167 transitions, 1445 flow [2024-11-23 22:37:52,807 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1445, PETRI_PLACES=176, PETRI_TRANSITIONS=167} [2024-11-23 22:37:52,807 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 110 predicate places. [2024-11-23 22:37:52,807 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 167 transitions, 1445 flow [2024-11-23 22:37:52,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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) [2024-11-23 22:37:52,807 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:52,807 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] [2024-11-23 22:37:52,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 22:37:52,808 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:52,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:52,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1376876522, now seen corresponding path program 1 times [2024-11-23 22:37:52,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:52,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260443780] [2024-11-23 22:37:52,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:52,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:52,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:52,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:52,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260443780] [2024-11-23 22:37:52,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260443780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:52,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496486003] [2024-11-23 22:37:52,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:52,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:52,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:52,943 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:37:52,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 22:37:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:53,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:37:53,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:53,169 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:53,170 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:37:53,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:37:53,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496486003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:37:53,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:37:53,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-23 22:37:53,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736055193] [2024-11-23 22:37:53,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:37:53,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 22:37:53,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:53,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 22:37:53,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:37:53,360 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-11-23 22:37:53,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 167 transitions, 1445 flow. Second operand has 20 states, 20 states have (on average 36.8) internal successors, (736), 20 states have internal predecessors, (736), 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) [2024-11-23 22:37:53,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:53,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-11-23 22:37:53,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:37:55,081 INFO L124 PetriNetUnfolderBase]: 5767/13658 cut-off events. [2024-11-23 22:37:55,082 INFO L125 PetriNetUnfolderBase]: For 71630/72353 co-relation queries the response was YES. [2024-11-23 22:37:55,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54872 conditions, 13658 events. 5767/13658 cut-off events. For 71630/72353 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 130627 event pairs, 2713 based on Foata normal form. 475/13997 useless extension candidates. Maximal degree in co-relation 51097. Up to 5807 conditions per place. [2024-11-23 22:37:55,212 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 256 selfloop transitions, 16 changer transitions 6/347 dead transitions. [2024-11-23 22:37:55,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 347 transitions, 3608 flow [2024-11-23 22:37:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:37:55,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 22:37:55,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 452 transitions. [2024-11-23 22:37:55,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6457142857142857 [2024-11-23 22:37:55,217 INFO L175 Difference]: Start difference. First operand has 176 places, 167 transitions, 1445 flow. Second operand 10 states and 452 transitions. [2024-11-23 22:37:55,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 347 transitions, 3608 flow [2024-11-23 22:37:55,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 347 transitions, 3593 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 22:37:55,659 INFO L231 Difference]: Finished difference. Result has 188 places, 172 transitions, 1537 flow [2024-11-23 22:37:55,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1537, PETRI_PLACES=188, PETRI_TRANSITIONS=172} [2024-11-23 22:37:55,660 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 122 predicate places. [2024-11-23 22:37:55,660 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 172 transitions, 1537 flow [2024-11-23 22:37:55,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 36.8) internal successors, (736), 20 states have internal predecessors, (736), 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) [2024-11-23 22:37:55,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:37:55,661 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] [2024-11-23 22:37:55,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 22:37:55,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-23 22:37:55,861 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:37:55,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:55,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1774037146, now seen corresponding path program 1 times [2024-11-23 22:37:55,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:55,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763275280] [2024-11-23 22:37:55,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:55,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 22:37:56,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:56,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763275280] [2024-11-23 22:37:56,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763275280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:56,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:56,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:37:56,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351824962] [2024-11-23 22:37:56,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:56,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:37:56,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:56,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:37:56,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:37:56,145 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-23 22:37:56,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 172 transitions, 1537 flow. Second operand has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 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) [2024-11-23 22:37:56,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:37:56,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-23 22:37:56,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:38:00,819 INFO L124 PetriNetUnfolderBase]: 16432/32467 cut-off events. [2024-11-23 22:38:00,819 INFO L125 PetriNetUnfolderBase]: For 182438/183474 co-relation queries the response was YES. [2024-11-23 22:38:01,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135335 conditions, 32467 events. 16432/32467 cut-off events. For 182438/183474 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 298448 event pairs, 2398 based on Foata normal form. 1200/33586 useless extension candidates. Maximal degree in co-relation 121845. Up to 8419 conditions per place. [2024-11-23 22:38:01,130 INFO L140 encePairwiseOnDemand]: 52/70 looper letters, 542 selfloop transitions, 224 changer transitions 0/803 dead transitions. [2024-11-23 22:38:01,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 803 transitions, 8544 flow [2024-11-23 22:38:01,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 22:38:01,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-23 22:38:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1084 transitions. [2024-11-23 22:38:01,133 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6194285714285714 [2024-11-23 22:38:01,133 INFO L175 Difference]: Start difference. First operand has 188 places, 172 transitions, 1537 flow. Second operand 25 states and 1084 transitions. [2024-11-23 22:38:01,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 803 transitions, 8544 flow [2024-11-23 22:38:02,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 803 transitions, 8517 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-23 22:38:02,742 INFO L231 Difference]: Finished difference. Result has 231 places, 397 transitions, 4964 flow [2024-11-23 22:38:02,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4964, PETRI_PLACES=231, PETRI_TRANSITIONS=397} [2024-11-23 22:38:02,742 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 165 predicate places. [2024-11-23 22:38:02,743 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 397 transitions, 4964 flow [2024-11-23 22:38:02,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 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) [2024-11-23 22:38:02,743 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:38:02,743 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] [2024-11-23 22:38:02,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 22:38:02,743 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:38:02,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:02,743 INFO L85 PathProgramCache]: Analyzing trace with hash 987458478, now seen corresponding path program 1 times [2024-11-23 22:38:02,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:38:02,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128194618] [2024-11-23 22:38:02,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:02,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:38:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 22:38:02,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:38:02,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128194618] [2024-11-23 22:38:02,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128194618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:38:02,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:38:02,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:38:02,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176961658] [2024-11-23 22:38:02,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:02,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:38:02,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:38:02,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:38:02,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:38:03,017 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-23 22:38:03,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 397 transitions, 4964 flow. Second operand has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 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) [2024-11-23 22:38:03,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:38:03,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-23 22:38:03,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:38:13,633 INFO L124 PetriNetUnfolderBase]: 26614/52277 cut-off events. [2024-11-23 22:38:13,633 INFO L125 PetriNetUnfolderBase]: For 616756/618683 co-relation queries the response was YES. [2024-11-23 22:38:14,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264637 conditions, 52277 events. 26614/52277 cut-off events. For 616756/618683 co-relation queries the response was YES. Maximal size of possible extension queue 1591. Compared 515014 event pairs, 3902 based on Foata normal form. 2241/54414 useless extension candidates. Maximal degree in co-relation 240794. Up to 15795 conditions per place. [2024-11-23 22:38:14,329 INFO L140 encePairwiseOnDemand]: 52/70 looper letters, 796 selfloop transitions, 394 changer transitions 0/1227 dead transitions. [2024-11-23 22:38:14,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 1227 transitions, 16783 flow [2024-11-23 22:38:14,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 22:38:14,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-23 22:38:14,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1084 transitions. [2024-11-23 22:38:14,332 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6194285714285714 [2024-11-23 22:38:14,332 INFO L175 Difference]: Start difference. First operand has 231 places, 397 transitions, 4964 flow. Second operand 25 states and 1084 transitions. [2024-11-23 22:38:14,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 1227 transitions, 16783 flow [2024-11-23 22:38:22,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 1227 transitions, 16683 flow, removed 50 selfloop flow, removed 0 redundant places. [2024-11-23 22:38:22,646 INFO L231 Difference]: Finished difference. Result has 278 places, 701 transitions, 11060 flow [2024-11-23 22:38:22,646 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=4924, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=11060, PETRI_PLACES=278, PETRI_TRANSITIONS=701} [2024-11-23 22:38:22,647 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 212 predicate places. [2024-11-23 22:38:22,647 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 701 transitions, 11060 flow [2024-11-23 22:38:22,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 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) [2024-11-23 22:38:22,648 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:38:22,648 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] [2024-11-23 22:38:22,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 22:38:22,648 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:38:22,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:22,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1632167177, now seen corresponding path program 1 times [2024-11-23 22:38:22,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:38:22,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105714308] [2024-11-23 22:38:22,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:22,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:38:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:22,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:38:22,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:38:22,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105714308] [2024-11-23 22:38:22,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105714308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:38:22,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213512178] [2024-11-23 22:38:22,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:22,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:38:22,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:38:22,796 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:38:22,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 22:38:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:22,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:38:22,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:38:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:38:23,048 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:38:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:38:23,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213512178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:38:23,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:38:23,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-23 22:38:23,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829653179] [2024-11-23 22:38:23,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:38:23,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 22:38:23,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:38:23,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 22:38:23,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:38:23,240 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-11-23 22:38:23,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 701 transitions, 11060 flow. Second operand has 20 states, 20 states have (on average 36.9) internal successors, (738), 20 states have internal predecessors, (738), 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) [2024-11-23 22:38:23,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:38:23,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-11-23 22:38:23,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:38:32,540 INFO L124 PetriNetUnfolderBase]: 15935/35664 cut-off events. [2024-11-23 22:38:32,540 INFO L125 PetriNetUnfolderBase]: For 561278/564520 co-relation queries the response was YES. [2024-11-23 22:38:33,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197101 conditions, 35664 events. 15935/35664 cut-off events. For 561278/564520 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 372275 event pairs, 7721 based on Foata normal form. 1457/36811 useless extension candidates. Maximal degree in co-relation 193685. Up to 19710 conditions per place. [2024-11-23 22:38:33,581 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 460 selfloop transitions, 20 changer transitions 113/911 dead transitions. [2024-11-23 22:38:33,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 911 transitions, 15151 flow [2024-11-23 22:38:33,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:38:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 22:38:33,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 449 transitions. [2024-11-23 22:38:33,583 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6414285714285715 [2024-11-23 22:38:33,583 INFO L175 Difference]: Start difference. First operand has 278 places, 701 transitions, 11060 flow. Second operand 10 states and 449 transitions. [2024-11-23 22:38:33,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 911 transitions, 15151 flow [2024-11-23 22:38:41,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 911 transitions, 14805 flow, removed 173 selfloop flow, removed 0 redundant places. [2024-11-23 22:38:41,411 INFO L231 Difference]: Finished difference. Result has 291 places, 706 transitions, 10829 flow [2024-11-23 22:38:41,412 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=10686, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=679, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10829, PETRI_PLACES=291, PETRI_TRANSITIONS=706} [2024-11-23 22:38:41,413 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 225 predicate places. [2024-11-23 22:38:41,413 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 706 transitions, 10829 flow [2024-11-23 22:38:41,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 36.9) internal successors, (738), 20 states have internal predecessors, (738), 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) [2024-11-23 22:38:41,414 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:38:41,414 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] [2024-11-23 22:38:41,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-23 22:38:41,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:38:41,619 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 22:38:41,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:41,620 INFO L85 PathProgramCache]: Analyzing trace with hash -567345569, now seen corresponding path program 2 times [2024-11-23 22:38:41,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:38:41,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357845812] [2024-11-23 22:38:41,621 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:38:41,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:38:41,664 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:38:41,667 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:38:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:38:42,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:38:42,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357845812] [2024-11-23 22:38:42,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357845812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:38:42,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348865020] [2024-11-23 22:38:42,141 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:38:42,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:38:42,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:38:42,143 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:38:42,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c7feb48-bf31-472e-9a6c-fb160a3c3004/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 22:38:42,230 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:38:42,231 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:38:42,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-23 22:38:42,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:38:42,301 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 19 treesize of output 1 [2024-11-23 22:38:42,509 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 21 treesize of output 9 [2024-11-23 22:38:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:38:42,535 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:38:42,746 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 18 treesize of output 16 [2024-11-23 22:38:42,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-23 22:38:42,759 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:38:42,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348865020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:38:42,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:38:42,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2024-11-23 22:38:42,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294235761] [2024-11-23 22:38:42,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:38:42,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-23 22:38:42,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:38:42,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-23 22:38:42,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2024-11-23 22:38:43,231 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2024-11-23 22:38:43,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 706 transitions, 10829 flow. Second operand has 26 states, 26 states have (on average 33.69230769230769) internal successors, (876), 26 states have internal predecessors, (876), 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) [2024-11-23 22:38:43,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:38:43,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2024-11-23 22:38:43,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand