./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.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_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/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_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/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_879c4079-4ea2-478c-9389-a06de1461d45/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 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:21:20,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:21:20,618 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 18:21:20,623 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:21:20,623 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:21:20,647 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:21:20,648 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:21:20,648 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:21:20,649 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:21:20,649 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:21:20,649 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:21:20,649 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:21:20,650 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:21:20,650 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:21:20,650 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:21:20,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:21:20,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:21:20,650 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:21:20,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:21:20,651 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:21:20,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:21:20,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:21:20,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:21:20,651 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:21:20,651 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 18:21:20,652 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 18:21:20,652 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:21:20,652 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:21:20,652 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:21:20,652 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:21:20,652 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:21:20,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:21:20,653 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:21:20,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:21:20,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:21:20,653 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:21:20,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:21:20,653 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:21:20,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:21:20,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:21:20,654 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:21:20,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:21:20,654 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:21:20,654 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:21:20,654 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:21:20,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:21:20,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:21:20,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:21:20,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:21:20,655 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:21:20,655 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_879c4079-4ea2-478c-9389-a06de1461d45/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 -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-11-23 18:21:20,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:21:20,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:21:20,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:21:20,965 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:21:20,966 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:21:20,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-23 18:21:24,037 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/data/46ec0af22/711f948cbb4c4d1eb1da9e2beac7b6a7/FLAG604f8484e [2024-11-23 18:21:24,310 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:21:24,311 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-23 18:21:24,319 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/data/46ec0af22/711f948cbb4c4d1eb1da9e2beac7b6a7/FLAG604f8484e [2024-11-23 18:21:24,333 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/data/46ec0af22/711f948cbb4c4d1eb1da9e2beac7b6a7 [2024-11-23 18:21:24,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:21:24,337 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:21:24,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:21:24,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:21:24,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:21:24,344 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:21:24" (1/1) ... [2024-11-23 18:21:24,345 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd4b377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:24, skipping insertion in model container [2024-11-23 18:21:24,345 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:21:24" (1/1) ... [2024-11-23 18:21:24,363 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:21:24,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:21:24,584 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:21:24,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:21:24,637 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:21:24,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:24 WrapperNode [2024-11-23 18:21:24,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:21:24,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:21:24,640 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:21:24,640 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:21:24,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:24" (1/1) ... [2024-11-23 18:21:24,660 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:24" (1/1) ... [2024-11-23 18:21:24,688 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 269 [2024-11-23 18:21:24,689 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:21:24,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:21:24,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:21:24,690 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:21:24,702 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:24" (1/1) ... [2024-11-23 18:21:24,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:24" (1/1) ... [2024-11-23 18:21:24,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:24" (1/1) ... [2024-11-23 18:21:24,744 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-23 18:21:24,745 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:24" (1/1) ... [2024-11-23 18:21:24,745 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:24" (1/1) ... [2024-11-23 18:21:24,757 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:24" (1/1) ... [2024-11-23 18:21:24,759 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:24" (1/1) ... [2024-11-23 18:21:24,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:24" (1/1) ... [2024-11-23 18:21:24,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:24" (1/1) ... [2024-11-23 18:21:24,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:24" (1/1) ... [2024-11-23 18:21:24,770 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:21:24,771 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:21:24,771 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:21:24,771 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:21:24,772 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:24" (1/1) ... [2024-11-23 18:21:24,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:21:24,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:24,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:21:24,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:21:24,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:21:24,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 18:21:24,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 18:21:24,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 18:21:24,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 18:21:24,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 18:21:24,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 18:21:24,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:21:24,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 18:21:24,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 18:21:24,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 18:21:24,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 18:21:24,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 18:21:24,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 18:21:24,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:21:24,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:21:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 18:21:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 18:21:24,835 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 18:21:24,966 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:21:24,968 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:21:25,646 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 18:21:25,647 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:21:26,158 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:21:26,158 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-23 18:21:26,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:21:26 BoogieIcfgContainer [2024-11-23 18:21:26,159 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:21:26,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:21:26,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:21:26,169 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:21:26,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:21:24" (1/3) ... [2024-11-23 18:21:26,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ea7ed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:21:26, skipping insertion in model container [2024-11-23 18:21:26,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:24" (2/3) ... [2024-11-23 18:21:26,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ea7ed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:21:26, skipping insertion in model container [2024-11-23 18:21:26,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:21:26" (3/3) ... [2024-11-23 18:21:26,172 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-11-23 18:21:26,189 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:21:26,191 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-queue-add-3-nl.wvr.c that has 4 procedures, 62 locations, 1 initial locations, 5 loop locations, and 20 error locations. [2024-11-23 18:21:26,191 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 18:21:26,278 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-23 18:21:26,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 70 transitions, 161 flow [2024-11-23 18:21:26,416 INFO L124 PetriNetUnfolderBase]: 9/67 cut-off events. [2024-11-23 18:21:26,420 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-23 18:21:26,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 9/67 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 214 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2024-11-23 18:21:26,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 70 transitions, 161 flow [2024-11-23 18:21:26,431 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 65 transitions, 145 flow [2024-11-23 18:21:26,444 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:21:26,459 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;@6a6ae03a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:21:26,459 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-23 18:21:26,464 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 18:21:26,464 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-23 18:21:26,465 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 18:21:26,465 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:21:26,465 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 18:21:26,466 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:21:26,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:26,475 INFO L85 PathProgramCache]: Analyzing trace with hash 798316, now seen corresponding path program 1 times [2024-11-23 18:21:26,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:26,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851569530] [2024-11-23 18:21:26,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:26,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:26,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:26,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:26,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851569530] [2024-11-23 18:21:26,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851569530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:26,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:26,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 18:21:26,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087658375] [2024-11-23 18:21:26,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:26,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:21:26,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:26,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:21:26,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:21:26,835 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2024-11-23 18:21:26,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:26,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:21:26,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2024-11-23 18:21:26,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:21:27,716 INFO L124 PetriNetUnfolderBase]: 2484/4384 cut-off events. [2024-11-23 18:21:27,717 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2024-11-23 18:21:27,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7980 conditions, 4384 events. 2484/4384 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 29001 event pairs, 2170 based on Foata normal form. 2/3256 useless extension candidates. Maximal degree in co-relation 7615. Up to 3366 conditions per place. [2024-11-23 18:21:27,766 INFO L140 encePairwiseOnDemand]: 53/70 looper letters, 32 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2024-11-23 18:21:27,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 199 flow [2024-11-23 18:21:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:21:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 18:21:27,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-11-23 18:21:27,782 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-11-23 18:21:27,783 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 145 flow. Second operand 4 states and 125 transitions. [2024-11-23 18:21:27,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 199 flow [2024-11-23 18:21:27,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 190 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-23 18:21:27,797 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 126 flow [2024-11-23 18:21:27,801 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-11-23 18:21:27,806 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -9 predicate places. [2024-11-23 18:21:27,806 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 126 flow [2024-11-23 18:21:27,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:27,806 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:21:27,806 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-23 18:21:27,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 18:21:27,807 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:21:27,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:27,807 INFO L85 PathProgramCache]: Analyzing trace with hash 24748596, now seen corresponding path program 1 times [2024-11-23 18:21:27,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:27,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133346906] [2024-11-23 18:21:27,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:27,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:27,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:27,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133346906] [2024-11-23 18:21:27,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133346906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:27,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:27,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 18:21:27,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348153171] [2024-11-23 18:21:27,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:27,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:21:27,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:27,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:21:27,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:21:27,917 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2024-11-23 18:21:27,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:27,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:21:27,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2024-11-23 18:21:27,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:21:28,620 INFO L124 PetriNetUnfolderBase]: 2486/4392 cut-off events. [2024-11-23 18:21:28,621 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-23 18:21:28,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7939 conditions, 4392 events. 2486/4392 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 29016 event pairs, 2170 based on Foata normal form. 2/3266 useless extension candidates. Maximal degree in co-relation 7891. Up to 3375 conditions per place. [2024-11-23 18:21:28,650 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 37 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2024-11-23 18:21:28,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 60 transitions, 236 flow [2024-11-23 18:21:28,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:21:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 18:21:28,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-23 18:21:28,652 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-11-23 18:21:28,652 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 126 flow. Second operand 4 states and 122 transitions. [2024-11-23 18:21:28,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 60 transitions, 236 flow [2024-11-23 18:21:28,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 214 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 18:21:28,656 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 170 flow [2024-11-23 18:21:28,656 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2024-11-23 18:21:28,657 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2024-11-23 18:21:28,657 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 170 flow [2024-11-23 18:21:28,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:28,657 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:21:28,657 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:28,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 18:21:28,657 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:21:28,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:28,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1469442711, now seen corresponding path program 1 times [2024-11-23 18:21:28,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:28,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125545363] [2024-11-23 18:21:28,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:28,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:28,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:28,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:28,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125545363] [2024-11-23 18:21:28,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125545363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:28,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:28,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 18:21:28,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144867719] [2024-11-23 18:21:28,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:28,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:21:28,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:28,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:21:28,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:21:28,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-23 18:21:28,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:28,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:21:28,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-23 18:21:28,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:21:29,586 INFO L124 PetriNetUnfolderBase]: 2626/4679 cut-off events. [2024-11-23 18:21:29,586 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-11-23 18:21:29,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8486 conditions, 4679 events. 2626/4679 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 30930 event pairs, 2297 based on Foata normal form. 101/3617 useless extension candidates. Maximal degree in co-relation 7903. Up to 3375 conditions per place. [2024-11-23 18:21:29,616 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 54 selfloop transitions, 7 changer transitions 1/80 dead transitions. [2024-11-23 18:21:29,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 80 transitions, 356 flow [2024-11-23 18:21:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:21:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 18:21:29,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2024-11-23 18:21:29,618 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5114285714285715 [2024-11-23 18:21:29,618 INFO L175 Difference]: Start difference. First operand has 60 places, 60 transitions, 170 flow. Second operand 5 states and 179 transitions. [2024-11-23 18:21:29,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 80 transitions, 356 flow [2024-11-23 18:21:29,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 18:21:29,621 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 233 flow [2024-11-23 18:21:29,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2024-11-23 18:21:29,622 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 0 predicate places. [2024-11-23 18:21:29,622 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 233 flow [2024-11-23 18:21:29,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:29,622 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:21:29,622 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-23 18:21:29,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 18:21:29,623 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:21:29,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:29,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1448154844, now seen corresponding path program 1 times [2024-11-23 18:21:29,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:29,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218952578] [2024-11-23 18:21:29,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:29,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:29,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:29,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:29,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218952578] [2024-11-23 18:21:29,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218952578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:21:29,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692571765] [2024-11-23 18:21:29,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:29,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:29,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:29,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:21:29,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:21:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:29,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:21:29,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:21:29,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:29,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:21:29,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:29,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692571765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:21:29,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:21:29,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-23 18:21:29,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408377495] [2024-11-23 18:21:29,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:21:29,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 18:21:29,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:29,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 18:21:29,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:21:29,989 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2024-11-23 18:21:29,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 233 flow. Second operand has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:29,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:21:29,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2024-11-23 18:21:29,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:21:30,888 INFO L124 PetriNetUnfolderBase]: 2591/4567 cut-off events. [2024-11-23 18:21:30,888 INFO L125 PetriNetUnfolderBase]: For 395/395 co-relation queries the response was YES. [2024-11-23 18:21:30,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9190 conditions, 4567 events. 2591/4567 cut-off events. For 395/395 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 29921 event pairs, 2297 based on Foata normal form. 6/3452 useless extension candidates. Maximal degree in co-relation 8576. Up to 3604 conditions per place. [2024-11-23 18:21:30,931 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 39 selfloop transitions, 33 changer transitions 0/88 dead transitions. [2024-11-23 18:21:30,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 88 transitions, 515 flow [2024-11-23 18:21:30,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 18:21:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 18:21:30,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-11-23 18:21:30,934 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36857142857142855 [2024-11-23 18:21:30,934 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 233 flow. Second operand 10 states and 258 transitions. [2024-11-23 18:21:30,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 88 transitions, 515 flow [2024-11-23 18:21:30,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 88 transitions, 511 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-23 18:21:30,940 INFO L231 Difference]: Finished difference. Result has 77 places, 88 transitions, 477 flow [2024-11-23 18:21:30,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=477, PETRI_PLACES=77, PETRI_TRANSITIONS=88} [2024-11-23 18:21:30,941 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 11 predicate places. [2024-11-23 18:21:30,941 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 88 transitions, 477 flow [2024-11-23 18:21:30,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:30,942 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:21:30,942 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:30,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 18:21:31,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:31,143 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:21:31,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:31,143 INFO L85 PathProgramCache]: Analyzing trace with hash 945039481, now seen corresponding path program 1 times [2024-11-23 18:21:31,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:31,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206338887] [2024-11-23 18:21:31,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:31,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:31,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:31,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:31,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206338887] [2024-11-23 18:21:31,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206338887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:21:31,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852155082] [2024-11-23 18:21:31,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:31,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:31,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:31,405 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:21:31,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:21:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:31,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 18:21:31,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:21:31,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 18:21:31,575 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:21:31,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852155082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:31,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:21:31,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-23 18:21:31,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248293382] [2024-11-23 18:21:31,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:31,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:21:31,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:31,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:21:31,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:21:31,582 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-23 18:21:31,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 88 transitions, 477 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:31,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:21:31,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-23 18:21:31,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:21:31,980 INFO L124 PetriNetUnfolderBase]: 1828/3312 cut-off events. [2024-11-23 18:21:31,980 INFO L125 PetriNetUnfolderBase]: For 439/439 co-relation queries the response was YES. [2024-11-23 18:21:31,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6477 conditions, 3312 events. 1828/3312 cut-off events. For 439/439 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 20582 event pairs, 1588 based on Foata normal form. 0/2773 useless extension candidates. Maximal degree in co-relation 6369. Up to 2572 conditions per place. [2024-11-23 18:21:32,002 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 66 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2024-11-23 18:21:32,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 85 transitions, 599 flow [2024-11-23 18:21:32,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:21:32,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 18:21:32,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-23 18:21:32,003 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-23 18:21:32,004 INFO L175 Difference]: Start difference. First operand has 77 places, 88 transitions, 477 flow. Second operand 3 states and 105 transitions. [2024-11-23 18:21:32,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 85 transitions, 599 flow [2024-11-23 18:21:32,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 85 transitions, 506 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-11-23 18:21:32,013 INFO L231 Difference]: Finished difference. Result has 71 places, 85 transitions, 374 flow [2024-11-23 18:21:32,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=71, PETRI_TRANSITIONS=85} [2024-11-23 18:21:32,015 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2024-11-23 18:21:32,015 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 85 transitions, 374 flow [2024-11-23 18:21:32,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:32,015 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:21:32,015 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:32,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 18:21:32,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:32,220 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:21:32,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:32,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1760353031, now seen corresponding path program 1 times [2024-11-23 18:21:32,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:32,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785778848] [2024-11-23 18:21:32,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:32,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:32,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:32,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785778848] [2024-11-23 18:21:32,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785778848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:32,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:32,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 18:21:32,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775130020] [2024-11-23 18:21:32,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:32,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:21:32,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:32,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:21:32,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:21:32,293 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-23 18:21:32,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 85 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:32,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:21:32,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-23 18:21:32,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:21:32,656 INFO L124 PetriNetUnfolderBase]: 1664/2976 cut-off events. [2024-11-23 18:21:32,657 INFO L125 PetriNetUnfolderBase]: For 422/422 co-relation queries the response was YES. [2024-11-23 18:21:32,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5975 conditions, 2976 events. 1664/2976 cut-off events. For 422/422 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17669 event pairs, 584 based on Foata normal form. 72/2579 useless extension candidates. Maximal degree in co-relation 5960. Up to 1751 conditions per place. [2024-11-23 18:21:32,668 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 79 selfloop transitions, 2 changer transitions 1/100 dead transitions. [2024-11-23 18:21:32,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 100 transitions, 577 flow [2024-11-23 18:21:32,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:21:32,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 18:21:32,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-11-23 18:21:32,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-23 18:21:32,670 INFO L175 Difference]: Start difference. First operand has 71 places, 85 transitions, 374 flow. Second operand 3 states and 119 transitions. [2024-11-23 18:21:32,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 100 transitions, 577 flow [2024-11-23 18:21:32,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 100 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 18:21:32,673 INFO L231 Difference]: Finished difference. Result has 73 places, 85 transitions, 379 flow [2024-11-23 18:21:32,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=73, PETRI_TRANSITIONS=85} [2024-11-23 18:21:32,674 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2024-11-23 18:21:32,674 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 85 transitions, 379 flow [2024-11-23 18:21:32,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:32,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:21:32,675 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:32,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 18:21:32,675 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:21:32,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:32,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1944869116, now seen corresponding path program 1 times [2024-11-23 18:21:32,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:32,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461104200] [2024-11-23 18:21:32,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:32,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:32,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 18:21:32,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:32,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461104200] [2024-11-23 18:21:32,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461104200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:32,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:32,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:21:32,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024628105] [2024-11-23 18:21:32,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:32,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:21:32,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:32,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:21:32,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:21:32,774 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-11-23 18:21:32,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 85 transitions, 379 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:32,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:21:32,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-11-23 18:21:32,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:21:33,402 INFO L124 PetriNetUnfolderBase]: 2779/4690 cut-off events. [2024-11-23 18:21:33,403 INFO L125 PetriNetUnfolderBase]: For 849/849 co-relation queries the response was YES. [2024-11-23 18:21:33,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10178 conditions, 4690 events. 2779/4690 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 28332 event pairs, 1522 based on Foata normal form. 96/4392 useless extension candidates. Maximal degree in co-relation 10161. Up to 3068 conditions per place. [2024-11-23 18:21:33,425 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 103 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2024-11-23 18:21:33,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 123 transitions, 699 flow [2024-11-23 18:21:33,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:21:33,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 18:21:33,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-11-23 18:21:33,428 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5607142857142857 [2024-11-23 18:21:33,428 INFO L175 Difference]: Start difference. First operand has 73 places, 85 transitions, 379 flow. Second operand 4 states and 157 transitions. [2024-11-23 18:21:33,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 123 transitions, 699 flow [2024-11-23 18:21:33,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 123 transitions, 695 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 18:21:33,433 INFO L231 Difference]: Finished difference. Result has 77 places, 88 transitions, 406 flow [2024-11-23 18:21:33,433 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=406, PETRI_PLACES=77, PETRI_TRANSITIONS=88} [2024-11-23 18:21:33,434 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 11 predicate places. [2024-11-23 18:21:33,434 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 88 transitions, 406 flow [2024-11-23 18:21:33,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:33,434 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:21:33,434 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:33,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 18:21:33,435 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:21:33,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:33,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1923161440, now seen corresponding path program 1 times [2024-11-23 18:21:33,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:33,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151980251] [2024-11-23 18:21:33,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:33,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 18:21:33,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:33,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151980251] [2024-11-23 18:21:33,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151980251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:33,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:33,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 18:21:33,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815587176] [2024-11-23 18:21:33,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:33,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:21:33,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:33,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:21:33,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:21:33,540 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-23 18:21:33,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 88 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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) [2024-11-23 18:21:33,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:21:33,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-23 18:21:33,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:21:34,001 INFO L124 PetriNetUnfolderBase]: 1972/3666 cut-off events. [2024-11-23 18:21:34,001 INFO L125 PetriNetUnfolderBase]: For 1313/1373 co-relation queries the response was YES. [2024-11-23 18:21:34,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8377 conditions, 3666 events. 1972/3666 cut-off events. For 1313/1373 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 23554 event pairs, 896 based on Foata normal form. 18/3326 useless extension candidates. Maximal degree in co-relation 8358. Up to 2593 conditions per place. [2024-11-23 18:21:34,018 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 76 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2024-11-23 18:21:34,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 97 transitions, 589 flow [2024-11-23 18:21:34,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:21:34,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 18:21:34,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-23 18:21:34,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5380952380952381 [2024-11-23 18:21:34,020 INFO L175 Difference]: Start difference. First operand has 77 places, 88 transitions, 406 flow. Second operand 3 states and 113 transitions. [2024-11-23 18:21:34,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 97 transitions, 589 flow [2024-11-23 18:21:34,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 586 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 18:21:34,025 INFO L231 Difference]: Finished difference. Result has 79 places, 90 transitions, 426 flow [2024-11-23 18:21:34,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=426, PETRI_PLACES=79, PETRI_TRANSITIONS=90} [2024-11-23 18:21:34,027 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2024-11-23 18:21:34,027 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 90 transitions, 426 flow [2024-11-23 18:21:34,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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) [2024-11-23 18:21:34,028 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:21:34,028 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:34,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 18:21:34,029 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:21:34,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:34,030 INFO L85 PathProgramCache]: Analyzing trace with hash 95234791, now seen corresponding path program 1 times [2024-11-23 18:21:34,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:34,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816775921] [2024-11-23 18:21:34,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:34,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:34,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 18:21:34,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:34,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816775921] [2024-11-23 18:21:34,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816775921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:34,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:34,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:21:34,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795046838] [2024-11-23 18:21:34,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:34,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:21:34,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:34,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:21:34,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:21:34,199 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-23 18:21:34,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 90 transitions, 426 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:34,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:21:34,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-23 18:21:34,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:21:34,712 INFO L124 PetriNetUnfolderBase]: 2309/4285 cut-off events. [2024-11-23 18:21:34,713 INFO L125 PetriNetUnfolderBase]: For 2415/2475 co-relation queries the response was YES. [2024-11-23 18:21:34,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10360 conditions, 4285 events. 2309/4285 cut-off events. For 2415/2475 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 27568 event pairs, 1862 based on Foata normal form. 100/4024 useless extension candidates. Maximal degree in co-relation 10339. Up to 2808 conditions per place. [2024-11-23 18:21:34,739 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 80 selfloop transitions, 8 changer transitions 6/112 dead transitions. [2024-11-23 18:21:34,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 112 transitions, 701 flow [2024-11-23 18:21:34,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:21:34,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 18:21:34,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-11-23 18:21:34,740 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-23 18:21:34,741 INFO L175 Difference]: Start difference. First operand has 79 places, 90 transitions, 426 flow. Second operand 4 states and 147 transitions. [2024-11-23 18:21:34,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 112 transitions, 701 flow [2024-11-23 18:21:34,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 112 transitions, 684 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-23 18:21:34,747 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 438 flow [2024-11-23 18:21:34,747 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=438, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2024-11-23 18:21:34,749 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 16 predicate places. [2024-11-23 18:21:34,749 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 438 flow [2024-11-23 18:21:34,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:34,749 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:21:34,749 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-23 18:21:34,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 18:21:34,749 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:21:34,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:34,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1890789836, now seen corresponding path program 2 times [2024-11-23 18:21:34,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:34,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049448950] [2024-11-23 18:21:34,750 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:21:34,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:34,770 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 18:21:34,771 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:21:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 18:21:34,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:34,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049448950] [2024-11-23 18:21:34,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049448950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:21:34,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244555023] [2024-11-23 18:21:34,819 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:21:34,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:34,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:34,821 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:21:34,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:21:34,905 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 18:21:34,905 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:21:34,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 18:21:34,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:21:34,947 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 18:21:34,947 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:21:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 18:21:34,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244555023] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:21:34,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:21:34,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-23 18:21:34,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079495733] [2024-11-23 18:21:34,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:21:34,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:21:34,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:34,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:21:34,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:21:35,002 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2024-11-23 18:21:35,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 90 transitions, 438 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:35,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:21:35,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2024-11-23 18:21:35,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:21:35,603 INFO L124 PetriNetUnfolderBase]: 2309/4200 cut-off events. [2024-11-23 18:21:35,603 INFO L125 PetriNetUnfolderBase]: For 1803/1943 co-relation queries the response was YES. [2024-11-23 18:21:35,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9922 conditions, 4200 events. 2309/4200 cut-off events. For 1803/1943 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 26266 event pairs, 1862 based on Foata normal form. 1/3839 useless extension candidates. Maximal degree in co-relation 9900. Up to 3353 conditions per place. [2024-11-23 18:21:35,633 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 57 selfloop transitions, 16 changer transitions 0/89 dead transitions. [2024-11-23 18:21:35,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 89 transitions, 574 flow [2024-11-23 18:21:35,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:21:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 18:21:35,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-11-23 18:21:35,634 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3964285714285714 [2024-11-23 18:21:35,635 INFO L175 Difference]: Start difference. First operand has 82 places, 90 transitions, 438 flow. Second operand 4 states and 111 transitions. [2024-11-23 18:21:35,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 89 transitions, 574 flow [2024-11-23 18:21:35,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 89 transitions, 567 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 18:21:35,639 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 453 flow [2024-11-23 18:21:35,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=453, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2024-11-23 18:21:35,640 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2024-11-23 18:21:35,640 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 453 flow [2024-11-23 18:21:35,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:35,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:21:35,640 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:35,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 18:21:35,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 18:21:35,841 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:21:35,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:35,842 INFO L85 PathProgramCache]: Analyzing trace with hash 686175718, now seen corresponding path program 1 times [2024-11-23 18:21:35,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:35,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564483069] [2024-11-23 18:21:35,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:35,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:35,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:35,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564483069] [2024-11-23 18:21:36,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564483069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:21:36,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52074294] [2024-11-23 18:21:36,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:36,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:36,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:36,002 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:21:36,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 18:21:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:36,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 18:21:36,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:21:36,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:36,241 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:21:36,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:36,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52074294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:21:36,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:21:36,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-23 18:21:36,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345754826] [2024-11-23 18:21:36,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:21:36,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 18:21:36,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:36,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 18:21:36,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-23 18:21:36,455 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2024-11-23 18:21:36,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 453 flow. Second operand has 15 states, 15 states have (on average 20.866666666666667) internal successors, (313), 15 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:36,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:21:36,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2024-11-23 18:21:36,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:21:37,584 INFO L124 PetriNetUnfolderBase]: 3826/7073 cut-off events. [2024-11-23 18:21:37,584 INFO L125 PetriNetUnfolderBase]: For 3090/3230 co-relation queries the response was YES. [2024-11-23 18:21:37,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16551 conditions, 7073 events. 3826/7073 cut-off events. For 3090/3230 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 49474 event pairs, 2556 based on Foata normal form. 232/6674 useless extension candidates. Maximal degree in co-relation 16528. Up to 3245 conditions per place. [2024-11-23 18:21:37,636 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 77 selfloop transitions, 48 changer transitions 15/156 dead transitions. [2024-11-23 18:21:37,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 156 transitions, 1009 flow [2024-11-23 18:21:37,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 18:21:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-23 18:21:37,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 422 transitions. [2024-11-23 18:21:37,639 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3546218487394958 [2024-11-23 18:21:37,639 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 453 flow. Second operand 17 states and 422 transitions. [2024-11-23 18:21:37,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 156 transitions, 1009 flow [2024-11-23 18:21:37,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 156 transitions, 977 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 18:21:37,647 INFO L231 Difference]: Finished difference. Result has 101 places, 106 transitions, 677 flow [2024-11-23 18:21:37,647 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=677, PETRI_PLACES=101, PETRI_TRANSITIONS=106} [2024-11-23 18:21:37,648 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 35 predicate places. [2024-11-23 18:21:37,648 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 106 transitions, 677 flow [2024-11-23 18:21:37,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.866666666666667) internal successors, (313), 15 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:37,648 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:21:37,649 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2024-11-23 18:21:37,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 18:21:37,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-23 18:21:37,853 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:21:37,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:37,854 INFO L85 PathProgramCache]: Analyzing trace with hash -921827678, now seen corresponding path program 1 times [2024-11-23 18:21:37,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:37,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573236175] [2024-11-23 18:21:37,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:37,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:38,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:38,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573236175] [2024-11-23 18:21:38,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573236175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:21:38,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207495268] [2024-11-23 18:21:38,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:38,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:38,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:38,069 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:21:38,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 18:21:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:38,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 18:21:38,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:21:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:38,227 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:21:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:38,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207495268] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:21:38,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:21:38,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-23 18:21:38,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593455607] [2024-11-23 18:21:38,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:21:38,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-23 18:21:38,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:38,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-23 18:21:38,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-23 18:21:38,483 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 70 [2024-11-23 18:21:38,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 106 transitions, 677 flow. Second operand has 24 states, 24 states have (on average 20.083333333333332) internal successors, (482), 24 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:38,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:21:38,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 70 [2024-11-23 18:21:38,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:21:39,470 INFO L124 PetriNetUnfolderBase]: 3560/6679 cut-off events. [2024-11-23 18:21:39,471 INFO L125 PetriNetUnfolderBase]: For 4135/4195 co-relation queries the response was YES. [2024-11-23 18:21:39,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16117 conditions, 6679 events. 3560/6679 cut-off events. For 4135/4195 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 47844 event pairs, 2940 based on Foata normal form. 18/6054 useless extension candidates. Maximal degree in co-relation 16089. Up to 5141 conditions per place. [2024-11-23 18:21:39,517 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 46 selfloop transitions, 110 changer transitions 0/172 dead transitions. [2024-11-23 18:21:39,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 172 transitions, 1571 flow [2024-11-23 18:21:39,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 18:21:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-23 18:21:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 518 transitions. [2024-11-23 18:21:39,520 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-11-23 18:21:39,520 INFO L175 Difference]: Start difference. First operand has 101 places, 106 transitions, 677 flow. Second operand 22 states and 518 transitions. [2024-11-23 18:21:39,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 172 transitions, 1571 flow [2024-11-23 18:21:39,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 172 transitions, 1453 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-11-23 18:21:39,532 INFO L231 Difference]: Finished difference. Result has 124 places, 172 transitions, 1441 flow [2024-11-23 18:21:39,532 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1441, PETRI_PLACES=124, PETRI_TRANSITIONS=172} [2024-11-23 18:21:39,533 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 58 predicate places. [2024-11-23 18:21:39,533 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 172 transitions, 1441 flow [2024-11-23 18:21:39,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 20.083333333333332) internal successors, (482), 24 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:39,533 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:21:39,533 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:39,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 18:21:39,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-23 18:21:39,737 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:21:39,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:39,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1729203165, now seen corresponding path program 1 times [2024-11-23 18:21:39,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:39,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331480676] [2024-11-23 18:21:39,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:39,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 18:21:39,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:39,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331480676] [2024-11-23 18:21:39,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331480676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:21:39,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812256908] [2024-11-23 18:21:39,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:39,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:39,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:39,951 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:21:39,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 18:21:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:40,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 18:21:40,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:21:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 18:21:40,099 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:21:40,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812256908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:40,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:21:40,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-23 18:21:40,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749201375] [2024-11-23 18:21:40,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:40,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:21:40,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:40,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:21:40,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:21:40,102 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-23 18:21:40,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 172 transitions, 1441 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:40,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:21:40,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-23 18:21:40,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:21:40,533 INFO L124 PetriNetUnfolderBase]: 2644/5189 cut-off events. [2024-11-23 18:21:40,533 INFO L125 PetriNetUnfolderBase]: For 3208/3248 co-relation queries the response was YES. [2024-11-23 18:21:40,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12340 conditions, 5189 events. 2644/5189 cut-off events. For 3208/3248 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 37190 event pairs, 2140 based on Foata normal form. 266/5024 useless extension candidates. Maximal degree in co-relation 12305. Up to 3921 conditions per place. [2024-11-23 18:21:40,555 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 152 selfloop transitions, 1 changer transitions 0/170 dead transitions. [2024-11-23 18:21:40,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 170 transitions, 1739 flow [2024-11-23 18:21:40,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:21:40,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 18:21:40,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-23 18:21:40,557 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-11-23 18:21:40,557 INFO L175 Difference]: Start difference. First operand has 124 places, 172 transitions, 1441 flow. Second operand 3 states and 102 transitions. [2024-11-23 18:21:40,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 170 transitions, 1739 flow [2024-11-23 18:21:40,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 170 transitions, 1410 flow, removed 104 selfloop flow, removed 10 redundant places. [2024-11-23 18:21:40,570 INFO L231 Difference]: Finished difference. Result has 114 places, 170 transitions, 1106 flow [2024-11-23 18:21:40,571 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1106, PETRI_PLACES=114, PETRI_TRANSITIONS=170} [2024-11-23 18:21:40,571 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 48 predicate places. [2024-11-23 18:21:40,571 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 170 transitions, 1106 flow [2024-11-23 18:21:40,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:40,572 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:21:40,572 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:40,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 18:21:40,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 18:21:40,772 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:21:40,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:40,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2065689692, now seen corresponding path program 1 times [2024-11-23 18:21:40,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:40,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531867899] [2024-11-23 18:21:40,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:40,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:41,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 18:21:41,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:41,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531867899] [2024-11-23 18:21:41,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531867899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:21:41,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095784838] [2024-11-23 18:21:41,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:41,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:41,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:41,504 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:21:41,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 18:21:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:41,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 18:21:41,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:21:41,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-23 18:21:42,073 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 18:21:42,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-23 18:21:42,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 18:21:42,102 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:21:42,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-23 18:21:42,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-23 18:21:42,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 18:21:42,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095784838] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:21:42,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:21:42,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-23 18:21:42,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688545194] [2024-11-23 18:21:42,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:21:42,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-23 18:21:42,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:42,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-23 18:21:42,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-11-23 18:21:42,924 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 70 [2024-11-23 18:21:42,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 170 transitions, 1106 flow. Second operand has 21 states, 21 states have (on average 17.0) internal successors, (357), 21 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:42,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:21:42,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 70 [2024-11-23 18:21:42,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:21:46,838 INFO L124 PetriNetUnfolderBase]: 14704/24597 cut-off events. [2024-11-23 18:21:46,838 INFO L125 PetriNetUnfolderBase]: For 11811/12317 co-relation queries the response was YES. [2024-11-23 18:21:46,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58365 conditions, 24597 events. 14704/24597 cut-off events. For 11811/12317 co-relation queries the response was YES. Maximal size of possible extension queue 1008. Compared 192781 event pairs, 6076 based on Foata normal form. 0/22150 useless extension candidates. Maximal degree in co-relation 58331. Up to 4410 conditions per place. [2024-11-23 18:21:46,960 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 277 selfloop transitions, 116 changer transitions 6/411 dead transitions. [2024-11-23 18:21:46,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 411 transitions, 2798 flow [2024-11-23 18:21:46,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 18:21:46,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-23 18:21:46,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 512 transitions. [2024-11-23 18:21:46,964 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40634920634920635 [2024-11-23 18:21:46,964 INFO L175 Difference]: Start difference. First operand has 114 places, 170 transitions, 1106 flow. Second operand 18 states and 512 transitions. [2024-11-23 18:21:46,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 411 transitions, 2798 flow [2024-11-23 18:21:46,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 411 transitions, 2797 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 18:21:46,991 INFO L231 Difference]: Finished difference. Result has 135 places, 185 transitions, 1423 flow [2024-11-23 18:21:46,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1423, PETRI_PLACES=135, PETRI_TRANSITIONS=185} [2024-11-23 18:21:46,992 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 69 predicate places. [2024-11-23 18:21:46,992 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 185 transitions, 1423 flow [2024-11-23 18:21:46,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.0) internal successors, (357), 21 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:46,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:21:46,993 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:47,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 18:21:47,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-23 18:21:47,193 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:21:47,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:47,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1545620234, now seen corresponding path program 2 times [2024-11-23 18:21:47,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:47,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983127976] [2024-11-23 18:21:47,194 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:21:47,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:47,226 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 18:21:47,226 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:21:47,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 18:21:47,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:47,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983127976] [2024-11-23 18:21:47,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983127976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:21:47,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573322019] [2024-11-23 18:21:47,313 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:21:47,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:47,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:47,315 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:21:47,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 18:21:47,414 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 18:21:47,414 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:21:47,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 18:21:47,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:21:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 18:21:47,452 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:21:47,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573322019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:47,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:21:47,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-23 18:21:47,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688414707] [2024-11-23 18:21:47,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:47,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:21:47,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:47,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:21:47,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:21:47,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 70 [2024-11-23 18:21:47,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 185 transitions, 1423 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:47,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:21:47,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 70 [2024-11-23 18:21:47,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:21:49,992 INFO L124 PetriNetUnfolderBase]: 10778/19294 cut-off events. [2024-11-23 18:21:49,992 INFO L125 PetriNetUnfolderBase]: For 17152/17486 co-relation queries the response was YES. [2024-11-23 18:21:50,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50818 conditions, 19294 events. 10778/19294 cut-off events. For 17152/17486 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 156857 event pairs, 3634 based on Foata normal form. 266/18196 useless extension candidates. Maximal degree in co-relation 50779. Up to 5828 conditions per place. [2024-11-23 18:21:50,106 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 211 selfloop transitions, 7 changer transitions 0/236 dead transitions. [2024-11-23 18:21:50,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 236 transitions, 2117 flow [2024-11-23 18:21:50,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:21:50,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 18:21:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2024-11-23 18:21:50,108 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-11-23 18:21:50,108 INFO L175 Difference]: Start difference. First operand has 135 places, 185 transitions, 1423 flow. Second operand 4 states and 142 transitions. [2024-11-23 18:21:50,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 236 transitions, 2117 flow [2024-11-23 18:21:50,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 236 transitions, 2059 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-23 18:21:50,233 INFO L231 Difference]: Finished difference. Result has 133 places, 184 transitions, 1387 flow [2024-11-23 18:21:50,233 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1387, PETRI_PLACES=133, PETRI_TRANSITIONS=184} [2024-11-23 18:21:50,234 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 67 predicate places. [2024-11-23 18:21:50,234 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 184 transitions, 1387 flow [2024-11-23 18:21:50,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:50,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:21:50,235 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:50,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 18:21:50,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-23 18:21:50,439 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:21:50,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:50,440 INFO L85 PathProgramCache]: Analyzing trace with hash -897712929, now seen corresponding path program 1 times [2024-11-23 18:21:50,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:50,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497804730] [2024-11-23 18:21:50,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:50,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:50,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 18:21:50,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:50,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497804730] [2024-11-23 18:21:50,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497804730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:21:50,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392972432] [2024-11-23 18:21:50,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:50,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:50,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:50,909 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:21:50,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 18:21:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:51,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 18:21:51,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:21:51,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-23 18:21:51,596 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 18:21:51,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-23 18:21:51,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 18:21:51,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:21:51,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-23 18:21:51,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-23 18:21:52,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 18:21:52,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392972432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:21:52,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:21:52,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2024-11-23 18:21:52,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668367569] [2024-11-23 18:21:52,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:21:52,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-23 18:21:52,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:52,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-23 18:21:52,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2024-11-23 18:21:52,415 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 70 [2024-11-23 18:21:52,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 184 transitions, 1387 flow. Second operand has 21 states, 21 states have (on average 18.142857142857142) internal successors, (381), 21 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:52,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:21:52,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 70 [2024-11-23 18:21:52,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:21:57,363 INFO L124 PetriNetUnfolderBase]: 14014/24229 cut-off events. [2024-11-23 18:21:57,363 INFO L125 PetriNetUnfolderBase]: For 28128/28502 co-relation queries the response was YES. [2024-11-23 18:21:57,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68113 conditions, 24229 events. 14014/24229 cut-off events. For 28128/28502 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 198430 event pairs, 5992 based on Foata normal form. 548/23905 useless extension candidates. Maximal degree in co-relation 68075. Up to 5668 conditions per place. [2024-11-23 18:21:57,536 INFO L140 encePairwiseOnDemand]: 55/70 looper letters, 354 selfloop transitions, 135 changer transitions 6/511 dead transitions. [2024-11-23 18:21:57,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 511 transitions, 3815 flow [2024-11-23 18:21:57,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-23 18:21:57,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-11-23 18:21:57,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 1042 transitions. [2024-11-23 18:21:57,542 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.354421768707483 [2024-11-23 18:21:57,542 INFO L175 Difference]: Start difference. First operand has 133 places, 184 transitions, 1387 flow. Second operand 42 states and 1042 transitions. [2024-11-23 18:21:57,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 511 transitions, 3815 flow [2024-11-23 18:21:57,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 511 transitions, 3621 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 18:21:57,727 INFO L231 Difference]: Finished difference. Result has 185 places, 211 transitions, 1911 flow [2024-11-23 18:21:57,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1911, PETRI_PLACES=185, PETRI_TRANSITIONS=211} [2024-11-23 18:21:57,728 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 119 predicate places. [2024-11-23 18:21:57,728 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 211 transitions, 1911 flow [2024-11-23 18:21:57,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.142857142857142) internal successors, (381), 21 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:57,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:21:57,728 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:57,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 18:21:57,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 18:21:57,932 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:21:57,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:57,933 INFO L85 PathProgramCache]: Analyzing trace with hash -669586139, now seen corresponding path program 1 times [2024-11-23 18:21:57,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:57,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757559047] [2024-11-23 18:21:57,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:57,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:58,039 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 18:21:58,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:58,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757559047] [2024-11-23 18:21:58,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757559047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:21:58,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756111350] [2024-11-23 18:21:58,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:58,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:58,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:58,042 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:21:58,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 18:21:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:58,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:21:58,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:21:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 18:21:58,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:21:58,396 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 18:21:58,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756111350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:21:58,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:21:58,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 18:21:58,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912219100] [2024-11-23 18:21:58,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:21:58,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 18:21:58,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:58,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 18:21:58,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:21:58,431 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-11-23 18:21:58,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 211 transitions, 1911 flow. Second operand has 12 states, 12 states have (on average 23.0) internal successors, (276), 12 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:58,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:21:58,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-11-23 18:21:58,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:22:02,645 INFO L124 PetriNetUnfolderBase]: 16536/29578 cut-off events. [2024-11-23 18:22:02,646 INFO L125 PetriNetUnfolderBase]: For 81006/81922 co-relation queries the response was YES. [2024-11-23 18:22:02,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92729 conditions, 29578 events. 16536/29578 cut-off events. For 81006/81922 co-relation queries the response was YES. Maximal size of possible extension queue 925. Compared 244601 event pairs, 4193 based on Foata normal form. 0/28424 useless extension candidates. Maximal degree in co-relation 92676. Up to 10979 conditions per place. [2024-11-23 18:22:02,925 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 441 selfloop transitions, 13 changer transitions 0/475 dead transitions. [2024-11-23 18:22:02,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 475 transitions, 4521 flow [2024-11-23 18:22:02,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 18:22:02,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 18:22:02,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 373 transitions. [2024-11-23 18:22:02,927 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5328571428571428 [2024-11-23 18:22:02,928 INFO L175 Difference]: Start difference. First operand has 185 places, 211 transitions, 1911 flow. Second operand 10 states and 373 transitions. [2024-11-23 18:22:02,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 475 transitions, 4521 flow [2024-11-23 18:22:03,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 475 transitions, 4269 flow, removed 27 selfloop flow, removed 17 redundant places. [2024-11-23 18:22:03,360 INFO L231 Difference]: Finished difference. Result has 180 places, 220 transitions, 1783 flow [2024-11-23 18:22:03,361 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1783, PETRI_PLACES=180, PETRI_TRANSITIONS=220} [2024-11-23 18:22:03,361 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 114 predicate places. [2024-11-23 18:22:03,361 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 220 transitions, 1783 flow [2024-11-23 18:22:03,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.0) internal successors, (276), 12 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:22:03,361 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:22:03,361 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:22:03,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 18:22:03,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:22:03,562 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:22:03,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:22:03,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1561212008, now seen corresponding path program 1 times [2024-11-23 18:22:03,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:22:03,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451983879] [2024-11-23 18:22:03,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:22:03,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:22:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:22:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:22:04,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:22:04,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451983879] [2024-11-23 18:22:04,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451983879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:22:04,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445088844] [2024-11-23 18:22:04,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:22:04,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:22:04,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:22:04,826 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:22:04,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 18:22:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:22:04,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-23 18:22:04,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:22:05,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-23 18:22:05,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-23 18:22:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 18:22:05,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:22:06,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-23 18:22:06,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-23 18:22:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 18:22:06,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445088844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:22:06,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:22:06,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 28 [2024-11-23 18:22:06,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268697377] [2024-11-23 18:22:06,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:22:06,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-23 18:22:06,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:22:06,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-23 18:22:06,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2024-11-23 18:22:06,805 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 70 [2024-11-23 18:22:06,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 220 transitions, 1783 flow. Second operand has 29 states, 29 states have (on average 16.06896551724138) internal successors, (466), 29 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:22:06,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:22:06,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 70 [2024-11-23 18:22:06,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:22:22,279 INFO L124 PetriNetUnfolderBase]: 48231/75944 cut-off events. [2024-11-23 18:22:22,280 INFO L125 PetriNetUnfolderBase]: For 229054/231516 co-relation queries the response was YES. [2024-11-23 18:22:22,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256111 conditions, 75944 events. 48231/75944 cut-off events. For 229054/231516 co-relation queries the response was YES. Maximal size of possible extension queue 2107. Compared 604637 event pairs, 8329 based on Foata normal form. 0/72733 useless extension candidates. Maximal degree in co-relation 256058. Up to 14920 conditions per place. [2024-11-23 18:22:22,918 INFO L140 encePairwiseOnDemand]: 53/70 looper letters, 635 selfloop transitions, 171 changer transitions 18/840 dead transitions. [2024-11-23 18:22:22,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 840 transitions, 7111 flow [2024-11-23 18:22:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-23 18:22:22,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-23 18:22:22,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1095 transitions. [2024-11-23 18:22:22,922 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33282674772036475 [2024-11-23 18:22:22,922 INFO L175 Difference]: Start difference. First operand has 180 places, 220 transitions, 1783 flow. Second operand 47 states and 1095 transitions. [2024-11-23 18:22:22,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 840 transitions, 7111 flow [2024-11-23 18:22:24,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 840 transitions, 6579 flow, removed 196 selfloop flow, removed 3 redundant places. [2024-11-23 18:22:24,134 INFO L231 Difference]: Finished difference. Result has 237 places, 288 transitions, 2800 flow [2024-11-23 18:22:24,134 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=2800, PETRI_PLACES=237, PETRI_TRANSITIONS=288} [2024-11-23 18:22:24,135 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 171 predicate places. [2024-11-23 18:22:24,135 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 288 transitions, 2800 flow [2024-11-23 18:22:24,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 16.06896551724138) internal successors, (466), 29 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:22:24,135 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:22:24,135 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:22:24,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 18:22:24,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 18:22:24,336 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:22:24,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:22:24,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1876838662, now seen corresponding path program 1 times [2024-11-23 18:22:24,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:22:24,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789333535] [2024-11-23 18:22:24,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:22:24,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:22:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:22:25,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 18:22:25,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:22:25,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789333535] [2024-11-23 18:22:25,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789333535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:22:25,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793450615] [2024-11-23 18:22:25,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:22:25,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:22:25,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:22:25,102 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:22:25,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 18:22:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:22:25,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-23 18:22:25,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:22:25,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-23 18:22:25,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-23 18:22:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 18:22:25,629 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:22:26,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-23 18:22:26,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-23 18:22:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 18:22:26,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793450615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:22:26,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:22:26,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2024-11-23 18:22:26,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965971897] [2024-11-23 18:22:26,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:22:26,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-23 18:22:26,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:22:26,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-23 18:22:26,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2024-11-23 18:22:26,380 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 70 [2024-11-23 18:22:26,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 288 transitions, 2800 flow. Second operand has 24 states, 24 states have (on average 18.375) internal successors, (441), 24 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:22:26,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:22:26,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 70 [2024-11-23 18:22:26,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:22:39,486 INFO L124 PetriNetUnfolderBase]: 38179/65236 cut-off events. [2024-11-23 18:22:39,486 INFO L125 PetriNetUnfolderBase]: For 422750/424884 co-relation queries the response was YES. [2024-11-23 18:22:39,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260598 conditions, 65236 events. 38179/65236 cut-off events. For 422750/424884 co-relation queries the response was YES. Maximal size of possible extension queue 1915. Compared 570753 event pairs, 6703 based on Foata normal form. 1614/65405 useless extension candidates. Maximal degree in co-relation 260530. Up to 12686 conditions per place. [2024-11-23 18:22:40,085 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 629 selfloop transitions, 184 changer transitions 18/851 dead transitions. [2024-11-23 18:22:40,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 851 transitions, 7702 flow [2024-11-23 18:22:40,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-23 18:22:40,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-23 18:22:40,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 773 transitions. [2024-11-23 18:22:40,087 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.408994708994709 [2024-11-23 18:22:40,087 INFO L175 Difference]: Start difference. First operand has 237 places, 288 transitions, 2800 flow. Second operand 27 states and 773 transitions. [2024-11-23 18:22:40,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 851 transitions, 7702 flow [2024-11-23 18:22:44,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 851 transitions, 7406 flow, removed 88 selfloop flow, removed 18 redundant places. [2024-11-23 18:22:44,452 INFO L231 Difference]: Finished difference. Result has 253 places, 316 transitions, 3293 flow [2024-11-23 18:22:44,452 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2552, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3293, PETRI_PLACES=253, PETRI_TRANSITIONS=316} [2024-11-23 18:22:44,453 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 187 predicate places. [2024-11-23 18:22:44,453 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 316 transitions, 3293 flow [2024-11-23 18:22:44,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.375) internal successors, (441), 24 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:22:44,453 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:22:44,453 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:22:44,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 18:22:44,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_879c4079-4ea2-478c-9389-a06de1461d45/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:22:44,654 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-23 18:22:44,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:22:44,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1018664509, now seen corresponding path program 1 times [2024-11-23 18:22:44,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:22:44,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053533289] [2024-11-23 18:22:44,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:22:44,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:22:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:22:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 18:22:44,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:22:44,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053533289] [2024-11-23 18:22:44,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053533289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:22:44,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:22:44,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:22:44,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464216514] [2024-11-23 18:22:44,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:22:44,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:22:44,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:22:44,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:22:44,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:22:44,755 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-11-23 18:22:44,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 316 transitions, 3293 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:22:44,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:22:44,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-11-23 18:22:44,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand