./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-determinism.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_94bda39f-e9b8-4369-aad6-1a63d8af97bf/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94bda39f-e9b8-4369-aad6-1a63d8af97bf/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_94bda39f-e9b8-4369-aad6-1a63d8af97bf/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94bda39f-e9b8-4369-aad6-1a63d8af97bf/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94bda39f-e9b8-4369-aad6-1a63d8af97bf/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_94bda39f-e9b8-4369-aad6-1a63d8af97bf/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 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:39:02,598 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:39:02,726 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94bda39f-e9b8-4369-aad6-1a63d8af97bf/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 23:39:02,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:39:02,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:39:02,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:39:02,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:39:02,787 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:39:02,787 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:39:02,788 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:39:02,789 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:39:02,789 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:39:02,789 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:39:02,789 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:39:02,790 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:39:02,790 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:39:02,790 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:39:02,790 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:39:02,790 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:39:02,790 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:39:02,790 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:39:02,790 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:39:02,790 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:39:02,790 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:39:02,791 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 23:39:02,791 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 23:39:02,791 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:39:02,792 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:39:02,792 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:39:02,792 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:39:02,793 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:39:02,793 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:39:02,794 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:39:02,794 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:39:02,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:39:02,794 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:39:02,794 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:39:02,794 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:39:02,794 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:39:02,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:39:02,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:39:02,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:39:02,795 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:39:02,795 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:39:02,796 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:39:02,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:39:02,796 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:39:02,796 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:39:02,796 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:39:02,796 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:39:02,797 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_94bda39f-e9b8-4369-aad6-1a63d8af97bf/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 -> 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 [2024-11-23 23:39:03,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:39:03,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:39:03,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:39:03,171 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:39:03,171 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:39:03,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94bda39f-e9b8-4369-aad6-1a63d8af97bf/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-23 23:39:06,635 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94bda39f-e9b8-4369-aad6-1a63d8af97bf/bin/uautomizer-verify-LYvppIcaGC/data/a7b97d490/5358c61d38ef4112be5826694a6291f4/FLAG529776a65 [2024-11-23 23:39:06,982 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:39:06,986 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94bda39f-e9b8-4369-aad6-1a63d8af97bf/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-23 23:39:07,002 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94bda39f-e9b8-4369-aad6-1a63d8af97bf/bin/uautomizer-verify-LYvppIcaGC/data/a7b97d490/5358c61d38ef4112be5826694a6291f4/FLAG529776a65 [2024-11-23 23:39:07,224 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94bda39f-e9b8-4369-aad6-1a63d8af97bf/bin/uautomizer-verify-LYvppIcaGC/data/a7b97d490/5358c61d38ef4112be5826694a6291f4 [2024-11-23 23:39:07,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:39:07,229 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:39:07,231 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:39:07,232 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:39:07,242 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:39:07,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:39:07" (1/1) ... [2024-11-23 23:39:07,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2891bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:07, skipping insertion in model container [2024-11-23 23:39:07,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:39:07" (1/1) ... [2024-11-23 23:39:07,267 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:39:07,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:39:07,543 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:39:07,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:39:07,604 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:39:07,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:07 WrapperNode [2024-11-23 23:39:07,606 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:39:07,607 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:39:07,608 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:39:07,608 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:39:07,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:07" (1/1) ... [2024-11-23 23:39:07,629 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:07" (1/1) ... [2024-11-23 23:39:07,658 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 102 [2024-11-23 23:39:07,661 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:39:07,662 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:39:07,662 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:39:07,662 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:39:07,675 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:07" (1/1) ... [2024-11-23 23:39:07,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:07" (1/1) ... [2024-11-23 23:39:07,682 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:07" (1/1) ... [2024-11-23 23:39:07,714 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 23:39:07,714 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:07" (1/1) ... [2024-11-23 23:39:07,718 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:07" (1/1) ... [2024-11-23 23:39:07,723 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:07" (1/1) ... [2024-11-23 23:39:07,729 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:07" (1/1) ... [2024-11-23 23:39:07,734 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:07" (1/1) ... [2024-11-23 23:39:07,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:07" (1/1) ... [2024-11-23 23:39:07,741 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:07" (1/1) ... [2024-11-23 23:39:07,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:39:07,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:39:07,748 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:39:07,752 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:39:07,753 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:07" (1/1) ... [2024-11-23 23:39:07,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:39:07,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94bda39f-e9b8-4369-aad6-1a63d8af97bf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:07,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94bda39f-e9b8-4369-aad6-1a63d8af97bf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:39:07,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94bda39f-e9b8-4369-aad6-1a63d8af97bf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:39:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:39:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 23:39:07,845 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 23:39:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 23:39:07,845 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 23:39:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 23:39:07,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 23:39:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-23 23:39:07,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-23 23:39:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:39:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:39:07,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:39:07,848 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 23:39:08,000 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:39:08,002 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:39:08,391 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 23:39:08,391 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:39:08,656 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:39:08,656 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-23 23:39:08,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:39:08 BoogieIcfgContainer [2024-11-23 23:39:08,657 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:39:08,664 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:39:08,664 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:39:08,673 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:39:08,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:39:07" (1/3) ... [2024-11-23 23:39:08,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76faa1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:39:08, skipping insertion in model container [2024-11-23 23:39:08,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:07" (2/3) ... [2024-11-23 23:39:08,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76faa1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:39:08, skipping insertion in model container [2024-11-23 23:39:08,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:39:08" (3/3) ... [2024-11-23 23:39:08,679 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2024-11-23 23:39:08,700 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:39:08,702 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-counter-determinism.wvr.c that has 5 procedures, 59 locations, 1 initial locations, 4 loop locations, and 16 error locations. [2024-11-23 23:39:08,703 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 23:39:08,835 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-23 23:39:08,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 62 transitions, 152 flow [2024-11-23 23:39:08,994 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2024-11-23 23:39:08,999 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-23 23:39:09,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 4/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 160 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-11-23 23:39:09,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 62 transitions, 152 flow [2024-11-23 23:39:09,016 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 133 flow [2024-11-23 23:39:09,032 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:39:09,047 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;@6809016d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:39:09,048 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-23 23:39:09,053 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 23:39:09,053 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-23 23:39:09,053 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 23:39:09,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:09,054 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 23:39:09,055 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 23:39:09,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:09,061 INFO L85 PathProgramCache]: Analyzing trace with hash 376505630, now seen corresponding path program 1 times [2024-11-23 23:39:09,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:09,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950254990] [2024-11-23 23:39:09,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:09,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:09,292 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 23:39:09,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:09,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950254990] [2024-11-23 23:39:09,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950254990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:09,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:09,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 23:39:09,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071179402] [2024-11-23 23:39:09,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:09,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:39:09,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:09,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:39:09,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:39:09,354 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-23 23:39:09,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 23:39:09,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:09,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-23 23:39:09,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:15,377 INFO L124 PetriNetUnfolderBase]: 28409/42107 cut-off events. [2024-11-23 23:39:15,378 INFO L125 PetriNetUnfolderBase]: For 2006/2006 co-relation queries the response was YES. [2024-11-23 23:39:15,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80741 conditions, 42107 events. 28409/42107 cut-off events. For 2006/2006 co-relation queries the response was YES. Maximal size of possible extension queue 2241. Compared 313201 event pairs, 13092 based on Foata normal form. 0/30523 useless extension candidates. Maximal degree in co-relation 75056. Up to 20574 conditions per place. [2024-11-23 23:39:15,917 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 70 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2024-11-23 23:39:15,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 360 flow [2024-11-23 23:39:15,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:39:15,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:39:15,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-23 23:39:15,939 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6989247311827957 [2024-11-23 23:39:15,943 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 133 flow. Second operand 3 states and 130 transitions. [2024-11-23 23:39:15,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 360 flow [2024-11-23 23:39:16,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 88 transitions, 338 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-23 23:39:16,119 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 144 flow [2024-11-23 23:39:16,124 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-11-23 23:39:16,129 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2024-11-23 23:39:16,133 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 144 flow [2024-11-23 23:39:16,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 23:39:16,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:16,134 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 23:39:16,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:39:16,134 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 23:39:16,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:16,137 INFO L85 PathProgramCache]: Analyzing trace with hash 376505631, now seen corresponding path program 1 times [2024-11-23 23:39:16,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:16,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453940460] [2024-11-23 23:39:16,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:16,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:16,220 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 23:39:16,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:16,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453940460] [2024-11-23 23:39:16,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453940460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:16,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:16,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 23:39:16,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960755964] [2024-11-23 23:39:16,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:16,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:39:16,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:16,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:39:16,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:39:16,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-23 23:39:16,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 23:39:16,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:16,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-23 23:39:16,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:20,195 INFO L124 PetriNetUnfolderBase]: 27849/40901 cut-off events. [2024-11-23 23:39:20,196 INFO L125 PetriNetUnfolderBase]: For 5597/5597 co-relation queries the response was YES. [2024-11-23 23:39:20,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83884 conditions, 40901 events. 27849/40901 cut-off events. For 5597/5597 co-relation queries the response was YES. Maximal size of possible extension queue 1678. Compared 293230 event pairs, 7534 based on Foata normal form. 953/35159 useless extension candidates. Maximal degree in co-relation 44734. Up to 29137 conditions per place. [2024-11-23 23:39:20,763 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 71 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2024-11-23 23:39:20,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 361 flow [2024-11-23 23:39:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:39:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:39:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2024-11-23 23:39:20,766 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6881720430107527 [2024-11-23 23:39:20,766 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 144 flow. Second operand 3 states and 128 transitions. [2024-11-23 23:39:20,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 361 flow [2024-11-23 23:39:20,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 88 transitions, 353 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 23:39:20,899 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 155 flow [2024-11-23 23:39:20,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-23 23:39:20,901 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2024-11-23 23:39:20,901 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 155 flow [2024-11-23 23:39:20,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 23:39:20,901 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:20,902 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:20,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:39:20,902 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 23:39:20,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:20,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1044672385, now seen corresponding path program 1 times [2024-11-23 23:39:20,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:20,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648258543] [2024-11-23 23:39:20,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:20,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:21,091 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 23:39:21,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:21,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648258543] [2024-11-23 23:39:21,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648258543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:21,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:21,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:39:21,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621678041] [2024-11-23 23:39:21,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:21,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:39:21,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:21,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:39:21,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:39:21,115 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-23 23:39:21,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 23:39:21,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:21,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-23 23:39:21,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:25,398 INFO L124 PetriNetUnfolderBase]: 43625/64396 cut-off events. [2024-11-23 23:39:25,398 INFO L125 PetriNetUnfolderBase]: For 15141/15141 co-relation queries the response was YES. [2024-11-23 23:39:25,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133444 conditions, 64396 events. 43625/64396 cut-off events. For 15141/15141 co-relation queries the response was YES. Maximal size of possible extension queue 2670. Compared 485717 event pairs, 25311 based on Foata normal form. 1154/54255 useless extension candidates. Maximal degree in co-relation 60797. Up to 45801 conditions per place. [2024-11-23 23:39:25,893 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 105 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2024-11-23 23:39:25,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 121 transitions, 527 flow [2024-11-23 23:39:25,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:39:25,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:39:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-11-23 23:39:25,901 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6895161290322581 [2024-11-23 23:39:25,901 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 155 flow. Second operand 4 states and 171 transitions. [2024-11-23 23:39:25,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 121 transitions, 527 flow [2024-11-23 23:39:25,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 121 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:39:25,932 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 181 flow [2024-11-23 23:39:25,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2024-11-23 23:39:25,934 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 1 predicate places. [2024-11-23 23:39:25,934 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 181 flow [2024-11-23 23:39:25,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 23:39:25,935 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:25,935 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:25,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:39:25,936 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 23:39:25,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:25,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1651722949, now seen corresponding path program 1 times [2024-11-23 23:39:25,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:25,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041877519] [2024-11-23 23:39:25,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:25,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:26,044 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 23:39:26,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:26,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041877519] [2024-11-23 23:39:26,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041877519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:26,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:26,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 23:39:26,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252752265] [2024-11-23 23:39:26,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:26,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:39:26,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:26,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:39:26,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:39:26,047 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-23 23:39:26,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 23:39:26,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:26,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-23 23:39:26,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:30,192 INFO L124 PetriNetUnfolderBase]: 38050/57637 cut-off events. [2024-11-23 23:39:30,193 INFO L125 PetriNetUnfolderBase]: For 23240/24032 co-relation queries the response was YES. [2024-11-23 23:39:30,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129739 conditions, 57637 events. 38050/57637 cut-off events. For 23240/24032 co-relation queries the response was YES. Maximal size of possible extension queue 2401. Compared 443395 event pairs, 18817 based on Foata normal form. 0/49663 useless extension candidates. Maximal degree in co-relation 69608. Up to 29564 conditions per place. [2024-11-23 23:39:30,451 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 76 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2024-11-23 23:39:30,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 94 transitions, 453 flow [2024-11-23 23:39:30,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:39:30,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:39:30,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-23 23:39:30,453 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-23 23:39:30,453 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 181 flow. Second operand 3 states and 124 transitions. [2024-11-23 23:39:30,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 94 transitions, 453 flow [2024-11-23 23:39:30,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 94 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:39:30,502 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 202 flow [2024-11-23 23:39:30,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2024-11-23 23:39:30,503 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 3 predicate places. [2024-11-23 23:39:30,503 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 202 flow [2024-11-23 23:39:30,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 23:39:30,504 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:30,504 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:30,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:39:30,504 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 23:39:30,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:30,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1651722948, now seen corresponding path program 1 times [2024-11-23 23:39:30,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:30,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037221764] [2024-11-23 23:39:30,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:30,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:30,596 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 23:39:30,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:30,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037221764] [2024-11-23 23:39:30,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037221764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:30,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:30,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 23:39:30,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615264148] [2024-11-23 23:39:30,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:30,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:39:30,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:30,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:39:30,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:39:30,599 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-23 23:39:30,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 23:39:30,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:30,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-23 23:39:30,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:34,831 INFO L124 PetriNetUnfolderBase]: 37476/56046 cut-off events. [2024-11-23 23:39:34,831 INFO L125 PetriNetUnfolderBase]: For 29315/31187 co-relation queries the response was YES. [2024-11-23 23:39:34,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132687 conditions, 56046 events. 37476/56046 cut-off events. For 29315/31187 co-relation queries the response was YES. Maximal size of possible extension queue 1782. Compared 409526 event pairs, 10252 based on Foata normal form. 1332/55585 useless extension candidates. Maximal degree in co-relation 77752. Up to 38504 conditions per place. [2024-11-23 23:39:35,264 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 76 selfloop transitions, 3 changer transitions 1/94 dead transitions. [2024-11-23 23:39:35,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 94 transitions, 471 flow [2024-11-23 23:39:35,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:39:35,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:39:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-11-23 23:39:35,265 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6559139784946236 [2024-11-23 23:39:35,265 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 202 flow. Second operand 3 states and 122 transitions. [2024-11-23 23:39:35,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 94 transitions, 471 flow [2024-11-23 23:39:35,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 94 transitions, 463 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 23:39:35,426 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 213 flow [2024-11-23 23:39:35,426 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-11-23 23:39:35,427 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 4 predicate places. [2024-11-23 23:39:35,428 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 213 flow [2024-11-23 23:39:35,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 23:39:35,428 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:35,428 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:35,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:39:35,429 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 23:39:35,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:35,429 INFO L85 PathProgramCache]: Analyzing trace with hash 185936857, now seen corresponding path program 1 times [2024-11-23 23:39:35,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:35,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927154518] [2024-11-23 23:39:35,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:35,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:35,514 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 23:39:35,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:35,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927154518] [2024-11-23 23:39:35,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927154518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:35,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:35,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:39:35,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591772019] [2024-11-23 23:39:35,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:35,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:39:35,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:35,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:39:35,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:39:35,517 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-23 23:39:35,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 213 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 23:39:35,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:35,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-23 23:39:35,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:42,265 INFO L124 PetriNetUnfolderBase]: 58559/87003 cut-off events. [2024-11-23 23:39:42,265 INFO L125 PetriNetUnfolderBase]: For 54724/57070 co-relation queries the response was YES. [2024-11-23 23:39:42,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213365 conditions, 87003 events. 58559/87003 cut-off events. For 54724/57070 co-relation queries the response was YES. Maximal size of possible extension queue 2400. Compared 658675 event pairs, 15866 based on Foata normal form. 3434/88766 useless extension candidates. Maximal degree in co-relation 81967. Up to 31457 conditions per place. [2024-11-23 23:39:43,045 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 119 selfloop transitions, 7 changer transitions 0/140 dead transitions. [2024-11-23 23:39:43,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 140 transitions, 725 flow [2024-11-23 23:39:43,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:39:43,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:39:43,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 184 transitions. [2024-11-23 23:39:43,048 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7419354838709677 [2024-11-23 23:39:43,049 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 213 flow. Second operand 4 states and 184 transitions. [2024-11-23 23:39:43,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 140 transitions, 725 flow [2024-11-23 23:39:43,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 140 transitions, 718 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:39:43,602 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 275 flow [2024-11-23 23:39:43,603 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-11-23 23:39:43,604 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2024-11-23 23:39:43,604 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 275 flow [2024-11-23 23:39:43,604 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 23:39:43,604 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:43,604 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:43,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:39:43,605 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 23:39:43,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:43,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1832161054, now seen corresponding path program 1 times [2024-11-23 23:39:43,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:43,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118448287] [2024-11-23 23:39:43,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:43,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:43,666 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 23:39:43,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:43,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118448287] [2024-11-23 23:39:43,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118448287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:43,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:43,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:39:43,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431721507] [2024-11-23 23:39:43,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:43,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:39:43,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:43,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:39:43,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:39:43,683 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-23 23:39:43,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 23:39:43,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:43,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-23 23:39:43,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:55,077 INFO L124 PetriNetUnfolderBase]: 93759/136581 cut-off events. [2024-11-23 23:39:55,077 INFO L125 PetriNetUnfolderBase]: For 128820/134522 co-relation queries the response was YES. [2024-11-23 23:39:55,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351370 conditions, 136581 events. 93759/136581 cut-off events. For 128820/134522 co-relation queries the response was YES. Maximal size of possible extension queue 3690. Compared 1058927 event pairs, 53447 based on Foata normal form. 2630/134805 useless extension candidates. Maximal degree in co-relation 169748. Up to 97029 conditions per place. [2024-11-23 23:39:56,158 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 131 selfloop transitions, 4 changer transitions 0/147 dead transitions. [2024-11-23 23:39:56,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 147 transitions, 915 flow [2024-11-23 23:39:56,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:39:56,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:39:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-23 23:39:56,160 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-23 23:39:56,160 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 275 flow. Second operand 4 states and 164 transitions. [2024-11-23 23:39:56,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 147 transitions, 915 flow [2024-11-23 23:39:57,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 147 transitions, 915 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 23:39:57,127 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 304 flow [2024-11-23 23:39:57,127 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2024-11-23 23:39:57,128 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 13 predicate places. [2024-11-23 23:39:57,128 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 304 flow [2024-11-23 23:39:57,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 23:39:57,128 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:57,128 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:57,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:39:57,129 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-23 23:39:57,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:57,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1703292645, now seen corresponding path program 1 times [2024-11-23 23:39:57,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:57,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867464923] [2024-11-23 23:39:57,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:57,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:57,209 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 23:39:57,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:57,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867464923] [2024-11-23 23:39:57,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867464923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:57,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:57,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:39:57,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131263219] [2024-11-23 23:39:57,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:57,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:39:57,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:57,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:39:57,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:39:57,219 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-23 23:39:57,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 304 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 23:39:57,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:57,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-23 23:39:57,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand