./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.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_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/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_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/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_55e60e8c-20ce-4beb-8b28-3efede35acae/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 8d3b4a56bf20a7e5cb147a14169234a27b247cfdef3db9f4b8a4f4a17cd6fe47 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 02:03:58,069 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 02:03:58,180 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-24 02:03:58,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 02:03:58,190 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 02:03:58,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 02:03:58,223 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 02:03:58,224 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 02:03:58,224 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 02:03:58,224 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 02:03:58,225 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 02:03:58,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 02:03:58,227 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 02:03:58,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 02:03:58,227 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 02:03:58,227 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 02:03:58,228 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 02:03:58,228 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 02:03:58,228 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 02:03:58,228 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 02:03:58,228 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 02:03:58,228 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 02:03:58,228 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 02:03:58,228 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 02:03:58,228 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 02:03:58,228 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 02:03:58,229 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 02:03:58,229 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 02:03:58,229 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 02:03:58,229 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 02:03:58,230 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 02:03:58,230 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:03:58,230 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:03:58,230 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:03:58,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:03:58,230 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 02:03:58,230 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:03:58,230 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:03:58,230 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:03:58,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:03:58,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 02:03:58,231 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 02:03:58,231 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 02:03:58,231 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 02:03:58,231 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 02:03:58,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 02:03:58,231 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 02:03:58,231 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 02:03:58,232 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 02:03:58,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 02:03:58,232 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_55e60e8c-20ce-4beb-8b28-3efede35acae/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 -> 8d3b4a56bf20a7e5cb147a14169234a27b247cfdef3db9f4b8a4f4a17cd6fe47 [2024-11-24 02:03:58,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 02:03:58,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 02:03:58,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 02:03:58,567 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 02:03:58,567 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 02:03:58,568 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2024-11-24 02:04:01,997 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/data/6f45556e6/480e442ed04449988604c97eca86af96/FLAG1da4b39d4 [2024-11-24 02:04:02,332 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 02:04:02,333 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2024-11-24 02:04:02,341 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/data/6f45556e6/480e442ed04449988604c97eca86af96/FLAG1da4b39d4 [2024-11-24 02:04:02,364 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/data/6f45556e6/480e442ed04449988604c97eca86af96 [2024-11-24 02:04:02,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 02:04:02,370 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 02:04:02,373 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 02:04:02,374 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 02:04:02,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 02:04:02,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:04:02" (1/1) ... [2024-11-24 02:04:02,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e2bf94b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:02, skipping insertion in model container [2024-11-24 02:04:02,385 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:04:02" (1/1) ... [2024-11-24 02:04:02,420 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 02:04:02,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:04:02,688 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 02:04:02,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:04:02,754 INFO L204 MainTranslator]: Completed translation [2024-11-24 02:04:02,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:02 WrapperNode [2024-11-24 02:04:02,756 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 02:04:02,758 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 02:04:02,758 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 02:04:02,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 02:04:02,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:02" (1/1) ... [2024-11-24 02:04:02,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:02" (1/1) ... [2024-11-24 02:04:02,854 INFO L138 Inliner]: procedures = 26, calls = 64, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 379 [2024-11-24 02:04:02,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 02:04:02,858 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 02:04:02,859 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 02:04:02,859 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 02:04:02,874 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:02" (1/1) ... [2024-11-24 02:04:02,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:02" (1/1) ... [2024-11-24 02:04:02,880 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:02" (1/1) ... [2024-11-24 02:04:02,915 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-24 02:04:02,916 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:02" (1/1) ... [2024-11-24 02:04:02,916 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:02" (1/1) ... [2024-11-24 02:04:02,926 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:02" (1/1) ... [2024-11-24 02:04:02,928 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:02" (1/1) ... [2024-11-24 02:04:02,933 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:02" (1/1) ... [2024-11-24 02:04:02,935 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:02" (1/1) ... [2024-11-24 02:04:02,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:02" (1/1) ... [2024-11-24 02:04:02,940 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 02:04:02,940 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 02:04:02,941 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 02:04:02,941 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 02:04:02,942 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:02" (1/1) ... [2024-11-24 02:04:02,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:04:02,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:04:02,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 02:04:02,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 02:04:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 02:04:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 02:04:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 02:04:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 02:04:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 02:04:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-24 02:04:03,006 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-24 02:04:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-24 02:04:03,006 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-24 02:04:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-24 02:04:03,006 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-24 02:04:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-24 02:04:03,006 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-24 02:04:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 02:04:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 02:04:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-24 02:04:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-24 02:04:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 02:04:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 02:04:03,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 02:04:03,010 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 02:04:03,144 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 02:04:03,147 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 02:04:04,017 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 02:04:04,017 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 02:04:04,936 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 02:04:04,936 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-24 02:04:04,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:04:04 BoogieIcfgContainer [2024-11-24 02:04:04,937 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 02:04:04,941 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 02:04:04,942 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 02:04:04,949 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 02:04:04,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 02:04:02" (1/3) ... [2024-11-24 02:04:04,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3383e217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:04:04, skipping insertion in model container [2024-11-24 02:04:04,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:02" (2/3) ... [2024-11-24 02:04:04,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3383e217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:04:04, skipping insertion in model container [2024-11-24 02:04:04,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:04:04" (3/3) ... [2024-11-24 02:04:04,954 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2024-11-24 02:04:04,973 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 02:04:04,975 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-series2.wvr.c that has 5 procedures, 80 locations, 1 initial locations, 7 loop locations, and 32 error locations. [2024-11-24 02:04:04,975 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 02:04:05,216 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-24 02:04:05,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 86 transitions, 200 flow [2024-11-24 02:04:05,348 INFO L124 PetriNetUnfolderBase]: 7/82 cut-off events. [2024-11-24 02:04:05,351 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-24 02:04:05,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 82 events. 7/82 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 270 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-11-24 02:04:05,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 86 transitions, 200 flow [2024-11-24 02:04:05,365 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 80 transitions, 181 flow [2024-11-24 02:04:05,378 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 02:04:05,393 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;@74afcf88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 02:04:05,393 INFO L334 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2024-11-24 02:04:05,401 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 02:04:05,401 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-24 02:04:05,401 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 02:04:05,401 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:04:05,402 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-24 02:04:05,402 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-24 02:04:05,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:05,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1255699, now seen corresponding path program 1 times [2024-11-24 02:04:05,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:05,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237188224] [2024-11-24 02:04:05,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:05,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:05,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:05,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:05,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237188224] [2024-11-24 02:04:05,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237188224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:05,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:05,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:04:05,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136280433] [2024-11-24 02:04:05,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:05,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:04:05,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:05,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:04:05,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:05,875 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-11-24 02:04:05,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:05,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:04:05,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-11-24 02:04:05,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:04:10,721 INFO L124 PetriNetUnfolderBase]: 13776/19475 cut-off events. [2024-11-24 02:04:10,723 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-11-24 02:04:10,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38854 conditions, 19475 events. 13776/19475 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 2660. Compared 152809 event pairs, 13494 based on Foata normal form. 3/9018 useless extension candidates. Maximal degree in co-relation 35198. Up to 18358 conditions per place. [2024-11-24 02:04:10,927 INFO L140 encePairwiseOnDemand]: 59/86 looper letters, 49 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2024-11-24 02:04:10,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 78 transitions, 295 flow [2024-11-24 02:04:10,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:04:10,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 02:04:10,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-24 02:04:10,946 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-11-24 02:04:10,948 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 181 flow. Second operand 4 states and 168 transitions. [2024-11-24 02:04:10,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 78 transitions, 295 flow [2024-11-24 02:04:10,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 78 transitions, 282 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-24 02:04:11,004 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 234 flow [2024-11-24 02:04:11,007 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2024-11-24 02:04:11,013 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -12 predicate places. [2024-11-24 02:04:11,013 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 234 flow [2024-11-24 02:04:11,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:11,013 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:04:11,014 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-24 02:04:11,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 02:04:11,015 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-24 02:04:11,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:11,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1244895109, now seen corresponding path program 1 times [2024-11-24 02:04:11,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:11,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870980000] [2024-11-24 02:04:11,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:11,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:11,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:11,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:11,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870980000] [2024-11-24 02:04:11,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870980000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:04:11,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724612725] [2024-11-24 02:04:11,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:11,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:04:11,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:04:11,187 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:04:11,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 02:04:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:11,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 02:04:11,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:04:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:11,411 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 02:04:11,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724612725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:11,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 02:04:11,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 02:04:11,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705070406] [2024-11-24 02:04:11,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:11,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 02:04:11,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:11,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 02:04:11,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:04:11,454 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-11-24 02:04:11,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:11,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:04:11,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-11-24 02:04:11,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:04:15,326 INFO L124 PetriNetUnfolderBase]: 13776/19472 cut-off events. [2024-11-24 02:04:15,326 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-24 02:04:15,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38387 conditions, 19472 events. 13776/19472 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 2660. Compared 152822 event pairs, 13494 based on Foata normal form. 3/9020 useless extension candidates. Maximal degree in co-relation 38314. Up to 18343 conditions per place. [2024-11-24 02:04:15,460 INFO L140 encePairwiseOnDemand]: 73/86 looper letters, 39 selfloop transitions, 17 changer transitions 0/75 dead transitions. [2024-11-24 02:04:15,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 334 flow [2024-11-24 02:04:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 02:04:15,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 02:04:15,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-11-24 02:04:15,462 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3817829457364341 [2024-11-24 02:04:15,462 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 234 flow. Second operand 6 states and 197 transitions. [2024-11-24 02:04:15,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 334 flow [2024-11-24 02:04:15,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 75 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 02:04:15,466 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 256 flow [2024-11-24 02:04:15,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2024-11-24 02:04:15,468 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -10 predicate places. [2024-11-24 02:04:15,468 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 256 flow [2024-11-24 02:04:15,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:15,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:04:15,469 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-24 02:04:15,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 02:04:15,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-24 02:04:15,674 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-24 02:04:15,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:15,675 INFO L85 PathProgramCache]: Analyzing trace with hash 62958576, now seen corresponding path program 1 times [2024-11-24 02:04:15,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:15,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027663281] [2024-11-24 02:04:15,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:15,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:15,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:15,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:15,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027663281] [2024-11-24 02:04:15,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027663281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:04:15,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384088185] [2024-11-24 02:04:15,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:15,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:04:15,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:04:15,889 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:04:15,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 02:04:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:16,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 02:04:16,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:04:16,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:16,063 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:04:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:16,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384088185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:04:16,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:04:16,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-24 02:04:16,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884831300] [2024-11-24 02:04:16,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:04:16,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 02:04:16,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:16,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 02:04:16,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-24 02:04:16,180 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-11-24 02:04:16,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 256 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:16,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:04:16,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-11-24 02:04:16,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:04:19,207 INFO L124 PetriNetUnfolderBase]: 13785/19508 cut-off events. [2024-11-24 02:04:19,207 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-24 02:04:19,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38528 conditions, 19508 events. 13785/19508 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 2660. Compared 153003 event pairs, 13494 based on Foata normal form. 9/9062 useless extension candidates. Maximal degree in co-relation 38316. Up to 18358 conditions per place. [2024-11-24 02:04:19,319 INFO L140 encePairwiseOnDemand]: 73/86 looper letters, 46 selfloop transitions, 37 changer transitions 0/102 dead transitions. [2024-11-24 02:04:19,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 102 transitions, 596 flow [2024-11-24 02:04:19,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 02:04:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-24 02:04:19,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 322 transitions. [2024-11-24 02:04:19,322 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3744186046511628 [2024-11-24 02:04:19,322 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 256 flow. Second operand 10 states and 322 transitions. [2024-11-24 02:04:19,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 102 transitions, 596 flow [2024-11-24 02:04:19,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 102 transitions, 513 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-24 02:04:19,326 INFO L231 Difference]: Finished difference. Result has 83 places, 102 transitions, 471 flow [2024-11-24 02:04:19,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=471, PETRI_PLACES=83, PETRI_TRANSITIONS=102} [2024-11-24 02:04:19,327 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -3 predicate places. [2024-11-24 02:04:19,327 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 471 flow [2024-11-24 02:04:19,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:19,328 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:04:19,328 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:19,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 02:04:19,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e60e8c-20ce-4beb-8b28-3efede35acae/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:04:19,534 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-24 02:04:19,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:19,534 INFO L85 PathProgramCache]: Analyzing trace with hash 783752213, now seen corresponding path program 1 times [2024-11-24 02:04:19,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:19,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368989264] [2024-11-24 02:04:19,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:19,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:19,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:19,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368989264] [2024-11-24 02:04:19,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368989264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:19,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:19,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-24 02:04:19,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318507014] [2024-11-24 02:04:19,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:19,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:04:19,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:19,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:04:19,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:04:19,742 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2024-11-24 02:04:19,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 102 transitions, 471 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:19,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:04:19,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2024-11-24 02:04:19,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:04:23,014 INFO L124 PetriNetUnfolderBase]: 18260/26578 cut-off events. [2024-11-24 02:04:23,014 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-11-24 02:04:23,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51695 conditions, 26578 events. 18260/26578 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 2906. Compared 212778 event pairs, 5538 based on Foata normal form. 0/14266 useless extension candidates. Maximal degree in co-relation 51597. Up to 16566 conditions per place. [2024-11-24 02:04:23,153 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 109 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-11-24 02:04:23,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 133 transitions, 762 flow [2024-11-24 02:04:23,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:04:23,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 02:04:23,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2024-11-24 02:04:23,155 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6356589147286822 [2024-11-24 02:04:23,155 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 471 flow. Second operand 3 states and 164 transitions. [2024-11-24 02:04:23,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 133 transitions, 762 flow [2024-11-24 02:04:23,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 133 transitions, 725 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-24 02:04:23,160 INFO L231 Difference]: Finished difference. Result has 84 places, 103 transitions, 448 flow [2024-11-24 02:04:23,161 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=448, PETRI_PLACES=84, PETRI_TRANSITIONS=103} [2024-11-24 02:04:23,162 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -2 predicate places. [2024-11-24 02:04:23,162 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 103 transitions, 448 flow [2024-11-24 02:04:23,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:23,162 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:04:23,163 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:23,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 02:04:23,164 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-24 02:04:23,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:23,165 INFO L85 PathProgramCache]: Analyzing trace with hash 11674693, now seen corresponding path program 1 times [2024-11-24 02:04:23,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:23,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404220960] [2024-11-24 02:04:23,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:23,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:23,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:23,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404220960] [2024-11-24 02:04:23,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404220960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:23,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:23,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-24 02:04:23,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217800465] [2024-11-24 02:04:23,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:23,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:04:23,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:23,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:04:23,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:04:23,351 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2024-11-24 02:04:23,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 103 transitions, 448 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:23,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:04:23,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2024-11-24 02:04:23,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:04:28,284 INFO L124 PetriNetUnfolderBase]: 25850/36748 cut-off events. [2024-11-24 02:04:28,284 INFO L125 PetriNetUnfolderBase]: For 3054/3054 co-relation queries the response was YES. [2024-11-24 02:04:28,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77591 conditions, 36748 events. 25850/36748 cut-off events. For 3054/3054 co-relation queries the response was YES. Maximal size of possible extension queue 3614. Compared 289055 event pairs, 8251 based on Foata normal form. 0/20181 useless extension candidates. Maximal degree in co-relation 77496. Up to 22147 conditions per place. [2024-11-24 02:04:28,478 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 109 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-11-24 02:04:28,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 133 transitions, 745 flow [2024-11-24 02:04:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:04:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 02:04:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2024-11-24 02:04:28,480 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-11-24 02:04:28,480 INFO L175 Difference]: Start difference. First operand has 84 places, 103 transitions, 448 flow. Second operand 3 states and 162 transitions. [2024-11-24 02:04:28,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 133 transitions, 745 flow [2024-11-24 02:04:28,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 133 transitions, 742 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 02:04:28,485 INFO L231 Difference]: Finished difference. Result has 86 places, 104 transitions, 460 flow [2024-11-24 02:04:28,485 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=460, PETRI_PLACES=86, PETRI_TRANSITIONS=104} [2024-11-24 02:04:28,486 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2024-11-24 02:04:28,486 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 104 transitions, 460 flow [2024-11-24 02:04:28,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:28,487 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:04:28,487 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:28,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 02:04:28,487 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-24 02:04:28,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:28,488 INFO L85 PathProgramCache]: Analyzing trace with hash 11674688, now seen corresponding path program 1 times [2024-11-24 02:04:28,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:28,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132079826] [2024-11-24 02:04:28,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:28,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:28,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:28,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132079826] [2024-11-24 02:04:28,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132079826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:28,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:28,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:04:28,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900172340] [2024-11-24 02:04:28,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:28,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:04:28,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:28,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:04:28,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:04:28,692 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2024-11-24 02:04:28,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 104 transitions, 460 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:28,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:04:28,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2024-11-24 02:04:28,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:04:34,568 INFO L124 PetriNetUnfolderBase]: 27719/38507 cut-off events. [2024-11-24 02:04:34,568 INFO L125 PetriNetUnfolderBase]: For 4982/4982 co-relation queries the response was YES. [2024-11-24 02:04:34,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86164 conditions, 38507 events. 27719/38507 cut-off events. For 4982/4982 co-relation queries the response was YES. Maximal size of possible extension queue 3305. Compared 295727 event pairs, 24980 based on Foata normal form. 742/23248 useless extension candidates. Maximal degree in co-relation 86040. Up to 34045 conditions per place. [2024-11-24 02:04:34,850 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 114 selfloop transitions, 7 changer transitions 1/144 dead transitions. [2024-11-24 02:04:34,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 144 transitions, 863 flow [2024-11-24 02:04:34,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:04:34,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 02:04:34,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-11-24 02:04:34,856 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5755813953488372 [2024-11-24 02:04:34,856 INFO L175 Difference]: Start difference. First operand has 86 places, 104 transitions, 460 flow. Second operand 4 states and 198 transitions. [2024-11-24 02:04:34,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 144 transitions, 863 flow [2024-11-24 02:04:34,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 144 transitions, 861 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 02:04:34,872 INFO L231 Difference]: Finished difference. Result has 89 places, 104 transitions, 489 flow [2024-11-24 02:04:34,872 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=489, PETRI_PLACES=89, PETRI_TRANSITIONS=104} [2024-11-24 02:04:34,873 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2024-11-24 02:04:34,874 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 104 transitions, 489 flow [2024-11-24 02:04:34,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:04:34,874 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:04:34,874 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:34,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 02:04:34,875 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-24 02:04:34,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:34,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1321285836, now seen corresponding path program 1 times [2024-11-24 02:04:34,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:34,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391844748] [2024-11-24 02:04:34,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:34,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:04:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:04:35,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:04:35,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391844748] [2024-11-24 02:04:35,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391844748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:04:35,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:04:35,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:04:35,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306449276] [2024-11-24 02:04:35,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:04:35,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:04:35,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:35,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:04:35,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:04:35,014 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2024-11-24 02:04:35,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 104 transitions, 489 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 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) [2024-11-24 02:04:35,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:04:35,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2024-11-24 02:04:35,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand