./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.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_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/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_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/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_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/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 fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:43:05,703 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:43:05,820 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-24 01:43:05,826 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:43:05,826 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:43:05,864 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:43:05,865 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:43:05,865 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:43:05,866 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:43:05,866 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:43:05,866 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:43:05,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:43:05,867 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:43:05,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:43:05,867 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:43:05,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:43:05,867 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:43:05,867 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:43:05,868 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:43:05,869 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:43:05,869 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:43:05,870 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:43:05,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:43:05,870 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:43:05,870 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 01:43:05,870 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:43:05,870 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:43:05,871 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:43:05,871 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:43:05,871 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:43:05,871 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:43:05,871 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:43:05,872 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:43:05,872 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:43:05,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:43:05,872 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:43:05,872 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:43:05,872 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:43:05,872 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:43:05,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:43:05,872 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:43:05,873 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:43:05,873 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:43:05,873 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:43:05,873 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:43:05,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:43:05,873 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:43:05,874 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:43:05,874 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:43:05,874 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:43:05,874 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_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/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 -> fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea [2024-11-24 01:43:06,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:43:06,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:43:06,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:43:06,237 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:43:06,237 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:43:06,239 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2024-11-24 01:43:09,401 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/data/af444ab4a/b2d60d5692394714b3700e164cf28465/FLAGf69f00369 [2024-11-24 01:43:09,866 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:43:09,867 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2024-11-24 01:43:09,890 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/data/af444ab4a/b2d60d5692394714b3700e164cf28465/FLAGf69f00369 [2024-11-24 01:43:09,919 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/data/af444ab4a/b2d60d5692394714b3700e164cf28465 [2024-11-24 01:43:09,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:43:09,924 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:43:09,925 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:43:09,925 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:43:09,933 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:43:09,934 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:43:09" (1/1) ... [2024-11-24 01:43:09,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c2607e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:09, skipping insertion in model container [2024-11-24 01:43:09,937 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:43:09" (1/1) ... [2024-11-24 01:43:09,961 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:43:10,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:43:10,211 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:43:10,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:43:10,265 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:43:10,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:10 WrapperNode [2024-11-24 01:43:10,267 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:43:10,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:43:10,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:43:10,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:43:10,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:10" (1/1) ... [2024-11-24 01:43:10,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:10" (1/1) ... [2024-11-24 01:43:10,313 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2024-11-24 01:43:10,314 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:43:10,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:43:10,315 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:43:10,316 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:43:10,326 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:10" (1/1) ... [2024-11-24 01:43:10,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:10" (1/1) ... [2024-11-24 01:43:10,327 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:10" (1/1) ... [2024-11-24 01:43:10,351 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 01:43:10,352 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:10" (1/1) ... [2024-11-24 01:43:10,353 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:10" (1/1) ... [2024-11-24 01:43:10,360 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:10" (1/1) ... [2024-11-24 01:43:10,365 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:10" (1/1) ... [2024-11-24 01:43:10,369 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:10" (1/1) ... [2024-11-24 01:43:10,374 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:10" (1/1) ... [2024-11-24 01:43:10,374 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:10" (1/1) ... [2024-11-24 01:43:10,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:43:10,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:43:10,380 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:43:10,380 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:43:10,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:10" (1/1) ... [2024-11-24 01:43:10,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:43:10,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:10,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:43:10,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:43:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:43:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-24 01:43:10,467 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-24 01:43:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-24 01:43:10,468 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-24 01:43:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:43:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-24 01:43:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-24 01:43:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:43:10,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:43:10,471 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 01:43:10,596 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:43:10,598 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:43:10,908 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 01:43:10,909 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:43:11,221 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:43:11,221 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:43:11,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:43:11 BoogieIcfgContainer [2024-11-24 01:43:11,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:43:11,226 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:43:11,226 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:43:11,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:43:11,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:43:09" (1/3) ... [2024-11-24 01:43:11,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c208689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:43:11, skipping insertion in model container [2024-11-24 01:43:11,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:43:10" (2/3) ... [2024-11-24 01:43:11,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c208689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:43:11, skipping insertion in model container [2024-11-24 01:43:11,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:43:11" (3/3) ... [2024-11-24 01:43:11,240 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2024-11-24 01:43:11,259 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:43:11,261 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-nonblocking-cntr.wvr.c that has 3 procedures, 28 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2024-11-24 01:43:11,262 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 01:43:11,329 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-24 01:43:11,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 29 transitions, 72 flow [2024-11-24 01:43:11,425 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-11-24 01:43:11,431 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-24 01:43:11,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 2/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 64 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-11-24 01:43:11,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 29 transitions, 72 flow [2024-11-24 01:43:11,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 25 transitions, 59 flow [2024-11-24 01:43:11,460 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:43:11,476 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;@5de92fc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:43:11,477 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-24 01:43:11,482 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 01:43:11,483 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-24 01:43:11,483 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:43:11,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:43:11,484 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-24 01:43:11,484 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-24 01:43:11,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:11,494 INFO L85 PathProgramCache]: Analyzing trace with hash 263122082, now seen corresponding path program 1 times [2024-11-24 01:43:11,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:11,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861369751] [2024-11-24 01:43:11,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:11,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:11,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:11,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:11,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861369751] [2024-11-24 01:43:11,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861369751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:11,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:43:11,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-24 01:43:11,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157258748] [2024-11-24 01:43:11,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:11,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:43:11,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:11,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:43:11,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:43:11,882 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-24 01:43:11,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:11,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:43:11,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-24 01:43:11,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:43:12,144 INFO L124 PetriNetUnfolderBase]: 143/291 cut-off events. [2024-11-24 01:43:12,145 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-24 01:43:12,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 291 events. 143/291 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1212 event pairs, 49 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 514. Up to 191 conditions per place. [2024-11-24 01:43:12,178 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 23 selfloop transitions, 2 changer transitions 2/33 dead transitions. [2024-11-24 01:43:12,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 33 transitions, 135 flow [2024-11-24 01:43:12,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:43:12,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:43:12,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-11-24 01:43:12,192 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-24 01:43:12,194 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 59 flow. Second operand 3 states and 58 transitions. [2024-11-24 01:43:12,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 33 transitions, 135 flow [2024-11-24 01:43:12,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 127 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-24 01:43:12,205 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 72 flow [2024-11-24 01:43:12,209 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2024-11-24 01:43:12,216 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2024-11-24 01:43:12,217 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 72 flow [2024-11-24 01:43:12,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:12,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:43:12,217 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:43:12,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:43:12,218 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-24 01:43:12,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:12,222 INFO L85 PathProgramCache]: Analyzing trace with hash -542739611, now seen corresponding path program 1 times [2024-11-24 01:43:12,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:12,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029752860] [2024-11-24 01:43:12,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:12,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:12,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:12,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:12,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029752860] [2024-11-24 01:43:12,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029752860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:12,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:43:12,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:43:12,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993637160] [2024-11-24 01:43:12,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:12,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:43:12,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:12,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:43:12,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:43:12,362 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-24 01:43:12,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:12,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:43:12,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-24 01:43:12,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:43:12,694 INFO L124 PetriNetUnfolderBase]: 243/463 cut-off events. [2024-11-24 01:43:12,695 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-24 01:43:12,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 463 events. 243/463 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2152 event pairs, 111 based on Foata normal form. 14/382 useless extension candidates. Maximal degree in co-relation 531. Up to 337 conditions per place. [2024-11-24 01:43:12,704 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 39 selfloop transitions, 3 changer transitions 1/46 dead transitions. [2024-11-24 01:43:12,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 216 flow [2024-11-24 01:43:12,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:43:12,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:43:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-11-24 01:43:12,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5603448275862069 [2024-11-24 01:43:12,708 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 72 flow. Second operand 4 states and 65 transitions. [2024-11-24 01:43:12,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 216 flow [2024-11-24 01:43:12,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:43:12,711 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 94 flow [2024-11-24 01:43:12,712 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-11-24 01:43:12,713 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2024-11-24 01:43:12,713 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 94 flow [2024-11-24 01:43:12,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:12,714 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:43:12,714 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:43:12,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:43:12,714 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-24 01:43:12,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:12,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1316019562, now seen corresponding path program 1 times [2024-11-24 01:43:12,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:12,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400918926] [2024-11-24 01:43:12,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:12,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:12,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:12,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400918926] [2024-11-24 01:43:12,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400918926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:12,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:43:12,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:43:12,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44470991] [2024-11-24 01:43:12,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:12,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:43:12,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:12,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:43:12,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:43:12,874 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-24 01:43:12,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:12,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:43:12,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-24 01:43:12,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:43:12,986 INFO L124 PetriNetUnfolderBase]: 130/247 cut-off events. [2024-11-24 01:43:12,986 INFO L125 PetriNetUnfolderBase]: For 89/108 co-relation queries the response was YES. [2024-11-24 01:43:12,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 247 events. 130/247 cut-off events. For 89/108 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1037 event pairs, 101 based on Foata normal form. 7/197 useless extension candidates. Maximal degree in co-relation 389. Up to 224 conditions per place. [2024-11-24 01:43:12,989 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 18 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2024-11-24 01:43:12,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 128 flow [2024-11-24 01:43:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:43:12,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:43:12,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-11-24 01:43:12,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2024-11-24 01:43:12,991 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 94 flow. Second operand 3 states and 42 transitions. [2024-11-24 01:43:12,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 128 flow [2024-11-24 01:43:12,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:43:12,993 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 90 flow [2024-11-24 01:43:12,993 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-11-24 01:43:12,994 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2024-11-24 01:43:12,994 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 90 flow [2024-11-24 01:43:12,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:12,994 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:43:12,994 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:43:12,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:43:12,995 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-24 01:43:12,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:12,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1321283163, now seen corresponding path program 1 times [2024-11-24 01:43:12,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:12,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931511512] [2024-11-24 01:43:12,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:12,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:13,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:13,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931511512] [2024-11-24 01:43:13,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931511512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:13,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:43:13,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:43:13,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350262443] [2024-11-24 01:43:13,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:13,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:43:13,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:13,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:43:13,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:43:13,121 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-24 01:43:13,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:13,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:43:13,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-24 01:43:13,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:43:13,262 INFO L124 PetriNetUnfolderBase]: 180/340 cut-off events. [2024-11-24 01:43:13,262 INFO L125 PetriNetUnfolderBase]: For 113/150 co-relation queries the response was YES. [2024-11-24 01:43:13,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 824 conditions, 340 events. 180/340 cut-off events. For 113/150 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1580 event pairs, 101 based on Foata normal form. 26/303 useless extension candidates. Maximal degree in co-relation 814. Up to 225 conditions per place. [2024-11-24 01:43:13,298 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 29 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2024-11-24 01:43:13,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 193 flow [2024-11-24 01:43:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:43:13,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:43:13,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-11-24 01:43:13,300 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2024-11-24 01:43:13,300 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 90 flow. Second operand 3 states and 53 transitions. [2024-11-24 01:43:13,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 193 flow [2024-11-24 01:43:13,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:43:13,302 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 103 flow [2024-11-24 01:43:13,302 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2024-11-24 01:43:13,303 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2024-11-24 01:43:13,303 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 103 flow [2024-11-24 01:43:13,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:13,304 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:43:13,304 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:43:13,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:43:13,304 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-24 01:43:13,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:13,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1796403838, now seen corresponding path program 1 times [2024-11-24 01:43:13,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:13,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425931248] [2024-11-24 01:43:13,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:13,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:13,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:13,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425931248] [2024-11-24 01:43:13,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425931248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:13,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:43:13,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:43:13,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411226633] [2024-11-24 01:43:13,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:13,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:43:13,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:13,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:43:13,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:43:13,376 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-24 01:43:13,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:13,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:43:13,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-24 01:43:13,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:43:13,491 INFO L124 PetriNetUnfolderBase]: 157/289 cut-off events. [2024-11-24 01:43:13,492 INFO L125 PetriNetUnfolderBase]: For 181/218 co-relation queries the response was YES. [2024-11-24 01:43:13,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 289 events. 157/289 cut-off events. For 181/218 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1220 event pairs, 126 based on Foata normal form. 13/253 useless extension candidates. Maximal degree in co-relation 784. Up to 269 conditions per place. [2024-11-24 01:43:13,496 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 18 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2024-11-24 01:43:13,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 137 flow [2024-11-24 01:43:13,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:43:13,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:43:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2024-11-24 01:43:13,501 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47126436781609193 [2024-11-24 01:43:13,501 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 103 flow. Second operand 3 states and 41 transitions. [2024-11-24 01:43:13,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 137 flow [2024-11-24 01:43:13,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:43:13,506 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 99 flow [2024-11-24 01:43:13,506 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2024-11-24 01:43:13,507 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2024-11-24 01:43:13,509 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 99 flow [2024-11-24 01:43:13,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:13,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:43:13,510 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:43:13,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:43:13,510 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-24 01:43:13,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:13,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1796403839, now seen corresponding path program 1 times [2024-11-24 01:43:13,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:13,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054886157] [2024-11-24 01:43:13,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:13,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:13,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:13,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054886157] [2024-11-24 01:43:13,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054886157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:13,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407138098] [2024-11-24 01:43:13,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:13,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:13,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:13,641 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:13,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:43:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:13,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:43:13,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:13,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:13,785 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:43:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:13,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407138098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:43:13,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:43:13,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-24 01:43:13,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82693002] [2024-11-24 01:43:13,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:43:13,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:43:13,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:13,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:43:13,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:43:13,856 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-24 01:43:13,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 99 flow. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:13,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:43:13,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-24 01:43:13,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:43:14,254 INFO L124 PetriNetUnfolderBase]: 406/1005 cut-off events. [2024-11-24 01:43:14,254 INFO L125 PetriNetUnfolderBase]: For 411/423 co-relation queries the response was YES. [2024-11-24 01:43:14,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2436 conditions, 1005 events. 406/1005 cut-off events. For 411/423 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5747 event pairs, 37 based on Foata normal form. 17/962 useless extension candidates. Maximal degree in co-relation 2424. Up to 187 conditions per place. [2024-11-24 01:43:14,264 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 61 selfloop transitions, 15 changer transitions 2/85 dead transitions. [2024-11-24 01:43:14,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 85 transitions, 470 flow [2024-11-24 01:43:14,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:43:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 01:43:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-11-24 01:43:14,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6502463054187192 [2024-11-24 01:43:14,267 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 99 flow. Second operand 7 states and 132 transitions. [2024-11-24 01:43:14,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 85 transitions, 470 flow [2024-11-24 01:43:14,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 85 transitions, 469 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:43:14,272 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 248 flow [2024-11-24 01:43:14,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=248, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-11-24 01:43:14,273 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-11-24 01:43:14,273 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 248 flow [2024-11-24 01:43:14,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:14,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:43:14,274 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:43:14,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:43:14,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-24 01:43:14,476 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-24 01:43:14,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:14,477 INFO L85 PathProgramCache]: Analyzing trace with hash 256660875, now seen corresponding path program 1 times [2024-11-24 01:43:14,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:14,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578157118] [2024-11-24 01:43:14,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:14,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:14,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:14,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:14,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578157118] [2024-11-24 01:43:14,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578157118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:14,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856360729] [2024-11-24 01:43:14,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:14,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:14,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:14,720 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:14,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:43:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:14,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:43:14,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:14,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:14,898 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:43:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:14,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856360729] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:14,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:43:14,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 9 [2024-11-24 01:43:14,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001588191] [2024-11-24 01:43:14,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:14,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:43:14,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:14,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:43:14,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:43:15,000 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-24 01:43:15,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:15,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:43:15,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-24 01:43:15,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:43:15,227 INFO L124 PetriNetUnfolderBase]: 358/768 cut-off events. [2024-11-24 01:43:15,227 INFO L125 PetriNetUnfolderBase]: For 1473/1534 co-relation queries the response was YES. [2024-11-24 01:43:15,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 768 events. 358/768 cut-off events. For 1473/1534 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3935 event pairs, 68 based on Foata normal form. 11/761 useless extension candidates. Maximal degree in co-relation 2329. Up to 510 conditions per place. [2024-11-24 01:43:15,236 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 41 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2024-11-24 01:43:15,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 390 flow [2024-11-24 01:43:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:43:15,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:43:15,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-11-24 01:43:15,238 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724 [2024-11-24 01:43:15,238 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 248 flow. Second operand 4 states and 59 transitions. [2024-11-24 01:43:15,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 390 flow [2024-11-24 01:43:15,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 376 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-11-24 01:43:15,246 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 246 flow [2024-11-24 01:43:15,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-11-24 01:43:15,247 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-11-24 01:43:15,247 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 246 flow [2024-11-24 01:43:15,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:15,247 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:43:15,248 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:43:15,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:43:15,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-24 01:43:15,449 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-24 01:43:15,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:15,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1068635144, now seen corresponding path program 1 times [2024-11-24 01:43:15,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:15,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828372014] [2024-11-24 01:43:15,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:15,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:15,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:15,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828372014] [2024-11-24 01:43:15,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828372014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:15,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729506138] [2024-11-24 01:43:15,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:15,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:15,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:15,661 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:15,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:43:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:15,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:43:15,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:43:15,806 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:43:15,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729506138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:15,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:43:15,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2024-11-24 01:43:15,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029642781] [2024-11-24 01:43:15,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:15,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:43:15,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:15,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:43:15,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:43:15,813 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-24 01:43:15,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:15,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:43:15,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-24 01:43:15,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:43:16,061 INFO L124 PetriNetUnfolderBase]: 423/785 cut-off events. [2024-11-24 01:43:16,062 INFO L125 PetriNetUnfolderBase]: For 1419/1500 co-relation queries the response was YES. [2024-11-24 01:43:16,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2447 conditions, 785 events. 423/785 cut-off events. For 1419/1500 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3760 event pairs, 145 based on Foata normal form. 38/726 useless extension candidates. Maximal degree in co-relation 2427. Up to 366 conditions per place. [2024-11-24 01:43:16,070 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 30 selfloop transitions, 10 changer transitions 4/50 dead transitions. [2024-11-24 01:43:16,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 378 flow [2024-11-24 01:43:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:43:16,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:43:16,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2024-11-24 01:43:16,072 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45689655172413796 [2024-11-24 01:43:16,073 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 246 flow. Second operand 4 states and 53 transitions. [2024-11-24 01:43:16,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 378 flow [2024-11-24 01:43:16,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 360 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-24 01:43:16,084 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 225 flow [2024-11-24 01:43:16,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2024-11-24 01:43:16,086 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2024-11-24 01:43:16,088 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 225 flow [2024-11-24 01:43:16,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:16,089 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:43:16,089 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-24 01:43:16,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 01:43:16,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:16,293 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-24 01:43:16,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:16,294 INFO L85 PathProgramCache]: Analyzing trace with hash -232754623, now seen corresponding path program 1 times [2024-11-24 01:43:16,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:16,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639905050] [2024-11-24 01:43:16,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:16,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:16,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:16,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:16,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639905050] [2024-11-24 01:43:16,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639905050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:16,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745545516] [2024-11-24 01:43:16,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:16,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:16,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:16,385 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:16,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:43:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:16,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:43:16,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:16,497 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:43:16,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745545516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:16,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:43:16,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-24 01:43:16,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803939935] [2024-11-24 01:43:16,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:16,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:43:16,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:16,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:43:16,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:43:16,518 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-24 01:43:16,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 225 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:16,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:43:16,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-24 01:43:16,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:43:16,794 INFO L124 PetriNetUnfolderBase]: 362/747 cut-off events. [2024-11-24 01:43:16,795 INFO L125 PetriNetUnfolderBase]: For 2089/2122 co-relation queries the response was YES. [2024-11-24 01:43:16,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2392 conditions, 747 events. 362/747 cut-off events. For 2089/2122 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3249 event pairs, 4 based on Foata normal form. 44/745 useless extension candidates. Maximal degree in co-relation 2371. Up to 281 conditions per place. [2024-11-24 01:43:16,802 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 58 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2024-11-24 01:43:16,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 67 transitions, 589 flow [2024-11-24 01:43:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:43:16,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 01:43:16,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-11-24 01:43:16,803 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-11-24 01:43:16,803 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 225 flow. Second operand 6 states and 72 transitions. [2024-11-24 01:43:16,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 67 transitions, 589 flow [2024-11-24 01:43:16,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 67 transitions, 561 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 01:43:16,809 INFO L231 Difference]: Finished difference. Result has 50 places, 33 transitions, 221 flow [2024-11-24 01:43:16,809 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=50, PETRI_TRANSITIONS=33} [2024-11-24 01:43:16,810 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2024-11-24 01:43:16,810 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 33 transitions, 221 flow [2024-11-24 01:43:16,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:16,810 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:43:16,810 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-24 01:43:16,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 01:43:17,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:17,011 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-24 01:43:17,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:17,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1374541567, now seen corresponding path program 1 times [2024-11-24 01:43:17,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:17,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017193656] [2024-11-24 01:43:17,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:17,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:17,100 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:17,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:17,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017193656] [2024-11-24 01:43:17,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017193656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:17,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264415446] [2024-11-24 01:43:17,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:17,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:17,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:17,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:17,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:43:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:17,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:43:17,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:17,200 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:43:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:17,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264415446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:43:17,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:43:17,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-24 01:43:17,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881747081] [2024-11-24 01:43:17,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:43:17,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:43:17,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:17,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:43:17,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:43:17,297 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-24 01:43:17,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 33 transitions, 221 flow. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:17,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:43:17,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-24 01:43:17,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:43:17,666 INFO L124 PetriNetUnfolderBase]: 560/1156 cut-off events. [2024-11-24 01:43:17,667 INFO L125 PetriNetUnfolderBase]: For 2826/2855 co-relation queries the response was YES. [2024-11-24 01:43:17,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3778 conditions, 1156 events. 560/1156 cut-off events. For 2826/2855 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5413 event pairs, 134 based on Foata normal form. 72/1220 useless extension candidates. Maximal degree in co-relation 3757. Up to 356 conditions per place. [2024-11-24 01:43:17,677 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 105 selfloop transitions, 9 changer transitions 0/118 dead transitions. [2024-11-24 01:43:17,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 118 transitions, 1006 flow [2024-11-24 01:43:17,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:43:17,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-24 01:43:17,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-11-24 01:43:17,679 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4379310344827586 [2024-11-24 01:43:17,679 INFO L175 Difference]: Start difference. First operand has 50 places, 33 transitions, 221 flow. Second operand 10 states and 127 transitions. [2024-11-24 01:43:17,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 118 transitions, 1006 flow [2024-11-24 01:43:17,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 118 transitions, 991 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-24 01:43:17,686 INFO L231 Difference]: Finished difference. Result has 58 places, 39 transitions, 276 flow [2024-11-24 01:43:17,687 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=276, PETRI_PLACES=58, PETRI_TRANSITIONS=39} [2024-11-24 01:43:17,687 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-11-24 01:43:17,687 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 39 transitions, 276 flow [2024-11-24 01:43:17,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:17,688 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:43:17,688 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2024-11-24 01:43:17,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-24 01:43:17,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 01:43:17,889 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-24 01:43:17,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:17,889 INFO L85 PathProgramCache]: Analyzing trace with hash 185311139, now seen corresponding path program 2 times [2024-11-24 01:43:17,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:17,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369217366] [2024-11-24 01:43:17,890 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:43:17,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:17,912 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:43:17,915 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:43:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:18,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:18,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369217366] [2024-11-24 01:43:18,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369217366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:18,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853660776] [2024-11-24 01:43:18,108 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:43:18,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:18,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:18,111 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:18,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:43:18,170 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:43:18,170 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:43:18,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:43:18,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:18,222 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:18,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:43:18,343 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:18,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853660776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:43:18,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:43:18,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-24 01:43:18,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138246424] [2024-11-24 01:43:18,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:43:18,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 01:43:18,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:18,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 01:43:18,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:43:18,345 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-24 01:43:18,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 39 transitions, 276 flow. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:18,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:43:18,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-24 01:43:18,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:43:18,897 INFO L124 PetriNetUnfolderBase]: 759/1968 cut-off events. [2024-11-24 01:43:18,897 INFO L125 PetriNetUnfolderBase]: For 7261/7363 co-relation queries the response was YES. [2024-11-24 01:43:18,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6688 conditions, 1968 events. 759/1968 cut-off events. For 7261/7363 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11642 event pairs, 29 based on Foata normal form. 88/2037 useless extension candidates. Maximal degree in co-relation 6665. Up to 365 conditions per place. [2024-11-24 01:43:18,914 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 96 selfloop transitions, 40 changer transitions 0/146 dead transitions. [2024-11-24 01:43:18,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 146 transitions, 1222 flow [2024-11-24 01:43:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:43:18,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-24 01:43:18,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 210 transitions. [2024-11-24 01:43:18,916 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5570291777188329 [2024-11-24 01:43:18,917 INFO L175 Difference]: Start difference. First operand has 58 places, 39 transitions, 276 flow. Second operand 13 states and 210 transitions. [2024-11-24 01:43:18,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 146 transitions, 1222 flow [2024-11-24 01:43:18,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 146 transitions, 1193 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-24 01:43:18,934 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 762 flow [2024-11-24 01:43:18,934 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=762, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-11-24 01:43:18,936 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-11-24 01:43:18,936 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 762 flow [2024-11-24 01:43:18,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:18,937 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:43:18,937 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-24 01:43:18,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 01:43:19,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:19,138 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-24 01:43:19,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:19,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1571448667, now seen corresponding path program 2 times [2024-11-24 01:43:19,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:19,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661221966] [2024-11-24 01:43:19,138 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:43:19,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:19,152 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 01:43:19,152 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:43:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-24 01:43:19,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:19,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661221966] [2024-11-24 01:43:19,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661221966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:19,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673514180] [2024-11-24 01:43:19,193 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:43:19,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:19,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:19,196 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:19,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:43:19,246 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 01:43:19,246 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:43:19,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:43:19,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:19,324 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-24 01:43:19,325 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:43:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-24 01:43:19,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673514180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:43:19,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:43:19,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-24 01:43:19,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476799712] [2024-11-24 01:43:19,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:43:19,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:43:19,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:19,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:43:19,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:43:19,424 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-24 01:43:19,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 762 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:19,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:43:19,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-24 01:43:19,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:43:20,009 INFO L124 PetriNetUnfolderBase]: 1482/2820 cut-off events. [2024-11-24 01:43:20,009 INFO L125 PetriNetUnfolderBase]: For 13491/13582 co-relation queries the response was YES. [2024-11-24 01:43:20,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10695 conditions, 2820 events. 1482/2820 cut-off events. For 13491/13582 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 13960 event pairs, 230 based on Foata normal form. 126/2943 useless extension candidates. Maximal degree in co-relation 10660. Up to 1240 conditions per place. [2024-11-24 01:43:20,047 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 120 selfloop transitions, 13 changer transitions 0/136 dead transitions. [2024-11-24 01:43:20,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 136 transitions, 1766 flow [2024-11-24 01:43:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:43:20,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 01:43:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2024-11-24 01:43:20,049 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3310344827586207 [2024-11-24 01:43:20,049 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 762 flow. Second operand 5 states and 48 transitions. [2024-11-24 01:43:20,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 136 transitions, 1766 flow [2024-11-24 01:43:20,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 136 transitions, 1515 flow, removed 117 selfloop flow, removed 6 redundant places. [2024-11-24 01:43:20,094 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 671 flow [2024-11-24 01:43:20,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=671, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2024-11-24 01:43:20,096 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-11-24 01:43:20,097 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 671 flow [2024-11-24 01:43:20,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:20,097 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:43:20,097 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2024-11-24 01:43:20,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:43:20,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:20,301 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-24 01:43:20,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:20,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1703844899, now seen corresponding path program 3 times [2024-11-24 01:43:20,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:20,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045160083] [2024-11-24 01:43:20,302 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:43:20,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:20,334 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-24 01:43:20,335 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:43:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:20,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:20,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045160083] [2024-11-24 01:43:20,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045160083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:20,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952774964] [2024-11-24 01:43:20,682 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:43:20,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:20,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:20,685 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:20,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:43:20,767 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-24 01:43:20,767 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:43:20,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 01:43:20,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:20,896 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:43:21,316 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:21,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952774964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:43:21,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:43:21,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-24 01:43:21,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641919713] [2024-11-24 01:43:21,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:43:21,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-24 01:43:21,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:21,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-24 01:43:21,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-24 01:43:21,320 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-24 01:43:21,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 671 flow. Second operand has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 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) [2024-11-24 01:43:21,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:43:21,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-24 01:43:21,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:43:22,649 INFO L124 PetriNetUnfolderBase]: 1587/4029 cut-off events. [2024-11-24 01:43:22,650 INFO L125 PetriNetUnfolderBase]: For 34758/34914 co-relation queries the response was YES. [2024-11-24 01:43:22,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14569 conditions, 4029 events. 1587/4029 cut-off events. For 34758/34914 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 22943 event pairs, 31 based on Foata normal form. 184/4180 useless extension candidates. Maximal degree in co-relation 14537. Up to 803 conditions per place. [2024-11-24 01:43:22,700 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 170 selfloop transitions, 144 changer transitions 0/324 dead transitions. [2024-11-24 01:43:22,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 324 transitions, 2977 flow [2024-11-24 01:43:22,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-24 01:43:22,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-24 01:43:22,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 414 transitions. [2024-11-24 01:43:22,703 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5710344827586207 [2024-11-24 01:43:22,703 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 671 flow. Second operand 25 states and 414 transitions. [2024-11-24 01:43:22,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 324 transitions, 2977 flow [2024-11-24 01:43:22,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 324 transitions, 2927 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-24 01:43:22,741 INFO L231 Difference]: Finished difference. Result has 119 places, 180 transitions, 2232 flow [2024-11-24 01:43:22,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2232, PETRI_PLACES=119, PETRI_TRANSITIONS=180} [2024-11-24 01:43:22,742 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-11-24 01:43:22,742 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 180 transitions, 2232 flow [2024-11-24 01:43:22,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 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) [2024-11-24 01:43:22,743 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:43:22,743 INFO L206 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2024-11-24 01:43:22,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 01:43:22,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-24 01:43:22,947 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-24 01:43:22,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:22,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1785066787, now seen corresponding path program 4 times [2024-11-24 01:43:22,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:22,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655891653] [2024-11-24 01:43:22,949 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:43:22,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:23,030 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:43:23,030 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:43:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:24,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:24,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655891653] [2024-11-24 01:43:24,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655891653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:24,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774531413] [2024-11-24 01:43:24,147 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:43:24,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:24,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:24,154 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:24,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:43:24,272 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:43:24,272 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:43:24,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-24 01:43:24,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:24,538 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:43:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:25,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774531413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:43:25,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:43:25,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-11-24 01:43:25,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975760911] [2024-11-24 01:43:25,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:43:25,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-24 01:43:25,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:25,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-24 01:43:25,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-24 01:43:25,957 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-24 01:43:25,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 180 transitions, 2232 flow. Second operand has 49 states, 49 states have (on average 10.040816326530612) internal successors, (492), 49 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:25,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:43:25,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-24 01:43:25,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:43:29,807 INFO L124 PetriNetUnfolderBase]: 4119/10679 cut-off events. [2024-11-24 01:43:29,807 INFO L125 PetriNetUnfolderBase]: For 276350/276688 co-relation queries the response was YES. [2024-11-24 01:43:29,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40260 conditions, 10679 events. 4119/10679 cut-off events. For 276350/276688 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 66813 event pairs, 57 based on Foata normal form. 376/11018 useless extension candidates. Maximal degree in co-relation 40205. Up to 2433 conditions per place. [2024-11-24 01:43:30,023 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 316 selfloop transitions, 500 changer transitions 0/826 dead transitions. [2024-11-24 01:43:30,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 826 transitions, 9742 flow [2024-11-24 01:43:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-24 01:43:30,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-24 01:43:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 822 transitions. [2024-11-24 01:43:30,033 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5784658691062632 [2024-11-24 01:43:30,034 INFO L175 Difference]: Start difference. First operand has 119 places, 180 transitions, 2232 flow. Second operand 49 states and 822 transitions. [2024-11-24 01:43:30,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 826 transitions, 9742 flow [2024-11-24 01:43:30,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 826 transitions, 7991 flow, removed 852 selfloop flow, removed 5 redundant places. [2024-11-24 01:43:30,308 INFO L231 Difference]: Finished difference. Result has 208 places, 538 transitions, 7092 flow [2024-11-24 01:43:30,308 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=7092, PETRI_PLACES=208, PETRI_TRANSITIONS=538} [2024-11-24 01:43:30,309 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-11-24 01:43:30,310 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 538 transitions, 7092 flow [2024-11-24 01:43:30,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 10.040816326530612) internal successors, (492), 49 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:30,311 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:43:30,311 INFO L206 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2024-11-24 01:43:30,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 01:43:30,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 01:43:30,512 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-24 01:43:30,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:30,514 INFO L85 PathProgramCache]: Analyzing trace with hash -80074973, now seen corresponding path program 5 times [2024-11-24 01:43:30,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:30,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831072562] [2024-11-24 01:43:30,514 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:43:30,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:30,788 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-24 01:43:30,788 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:43:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:34,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:34,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831072562] [2024-11-24 01:43:34,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831072562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:43:34,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450046183] [2024-11-24 01:43:34,343 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:43:34,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:43:34,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:43:34,345 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:43:34,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:43:34,560 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-24 01:43:34,560 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:43:34,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-24 01:43:34,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:43:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:34,989 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:43:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:43:38,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450046183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:43:38,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:43:38,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2024-11-24 01:43:38,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095069748] [2024-11-24 01:43:38,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:43:38,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-24 01:43:38,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:38,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-24 01:43:38,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-24 01:43:38,665 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-24 01:43:38,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 538 transitions, 7092 flow. Second operand has 96 states, 96 states have (on average 10.0) internal successors, (960), 96 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:38,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:43:38,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-24 01:43:38,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:43:56,431 INFO L124 PetriNetUnfolderBase]: 12651/33265 cut-off events. [2024-11-24 01:43:56,431 INFO L125 PetriNetUnfolderBase]: For 2193584/2194294 co-relation queries the response was YES. [2024-11-24 01:43:56,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125449 conditions, 33265 events. 12651/33265 cut-off events. For 2193584/2194294 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 241089 event pairs, 177 based on Foata normal form. 760/34008 useless extension candidates. Maximal degree in co-relation 125351. Up to 8011 conditions per place. [2024-11-24 01:43:57,021 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 604 selfloop transitions, 1792 changer transitions 0/2406 dead transitions. [2024-11-24 01:43:57,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 2406 transitions, 31114 flow [2024-11-24 01:43:57,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-24 01:43:57,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2024-11-24 01:43:57,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 1626 transitions. [2024-11-24 01:43:57,027 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.584051724137931 [2024-11-24 01:43:57,028 INFO L175 Difference]: Start difference. First operand has 208 places, 538 transitions, 7092 flow. Second operand 96 states and 1626 transitions. [2024-11-24 01:43:57,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 2406 transitions, 31114 flow [2024-11-24 01:43:58,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 2406 transitions, 24595 flow, removed 3150 selfloop flow, removed 11 redundant places. [2024-11-24 01:43:58,085 INFO L231 Difference]: Finished difference. Result has 386 places, 1832 transitions, 24462 flow [2024-11-24 01:43:58,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6335, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=96, PETRI_FLOW=24462, PETRI_PLACES=386, PETRI_TRANSITIONS=1832} [2024-11-24 01:43:58,086 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-11-24 01:43:58,086 INFO L471 AbstractCegarLoop]: Abstraction has has 386 places, 1832 transitions, 24462 flow [2024-11-24 01:43:58,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 10.0) internal successors, (960), 96 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:43:58,087 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:43:58,087 INFO L206 CegarLoopForPetriNet]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1] [2024-11-24 01:43:58,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-24 01:43:58,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-24 01:43:58,288 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-24 01:43:58,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:58,291 INFO L85 PathProgramCache]: Analyzing trace with hash -2005365981, now seen corresponding path program 6 times [2024-11-24 01:43:58,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:58,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795721677] [2024-11-24 01:43:58,291 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:43:58,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:59,218 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2024-11-24 01:43:59,218 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:44:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:44:11,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:44:11,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795721677] [2024-11-24 01:44:11,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795721677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:44:11,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772164796] [2024-11-24 01:44:11,438 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 01:44:11,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:44:11,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:44:11,441 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:44:11,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c94f8c8-2fa1-400e-bcbc-1d9f87184cce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:44:11,949 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2024-11-24 01:44:11,949 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:44:11,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-24 01:44:11,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:44:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:44:12,776 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:44:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:44:27,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772164796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:44:27,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:44:27,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 191 [2024-11-24 01:44:27,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001746134] [2024-11-24 01:44:27,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:44:27,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-24 01:44:27,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:44:27,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-24 01:44:27,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-24 01:44:27,067 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-24 01:44:27,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 1832 transitions, 24462 flow. Second operand has 193 states, 193 states have (on average 10.010362694300518) internal successors, (1932), 193 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:44:27,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:44:27,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-24 01:44:27,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand