./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB --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 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:22:40,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:22:40,313 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-27 20:22:40,322 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:22:40,322 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:22:40,358 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:22:40,359 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:22:40,359 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:22:40,360 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:22:40,360 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:22:40,361 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:22:40,361 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:22:40,362 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:22:40,362 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:22:40,362 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:22:40,362 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:22:40,362 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:22:40,362 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:22:40,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:22:40,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:22:40,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:22:40,363 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:22:40,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:22:40,363 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:22:40,364 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 20:22:40,364 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:22:40,364 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:22:40,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:22:40,364 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:22:40,365 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:22:40,365 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:22:40,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:22:40,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:22:40,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:22:40,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:22:40,366 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:22:40,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:22:40,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:22:40,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:22:40,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:22:40,367 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:22:40,367 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:22:40,367 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:22:40,367 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:22:40,368 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:22:40,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:22:40,368 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:22:40,368 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:22:40,368 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:22:40,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:22:40,368 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_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 [2024-11-27 20:22:40,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:22:40,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:22:40,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:22:40,790 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:22:40,791 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:22:40,793 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2024-11-27 20:22:44,720 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/data/5536af68c/453e1257efd74a57a3d3b822629305a2/FLAGc458bbdd2 [2024-11-27 20:22:45,084 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:22:45,085 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2024-11-27 20:22:45,099 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/data/5536af68c/453e1257efd74a57a3d3b822629305a2/FLAGc458bbdd2 [2024-11-27 20:22:45,132 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/data/5536af68c/453e1257efd74a57a3d3b822629305a2 [2024-11-27 20:22:45,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:22:45,138 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:22:45,139 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:22:45,140 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:22:45,150 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:22:45,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:22:45" (1/1) ... [2024-11-27 20:22:45,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4d7885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:45, skipping insertion in model container [2024-11-27 20:22:45,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:22:45" (1/1) ... [2024-11-27 20:22:45,179 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:22:45,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:22:45,457 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:22:45,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:22:45,535 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:22:45,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:45 WrapperNode [2024-11-27 20:22:45,536 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:22:45,537 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:22:45,537 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:22:45,537 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:22:45,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:45" (1/1) ... [2024-11-27 20:22:45,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:45" (1/1) ... [2024-11-27 20:22:45,605 INFO L138 Inliner]: procedures = 23, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 93 [2024-11-27 20:22:45,606 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:22:45,606 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:22:45,606 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:22:45,606 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:22:45,619 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:45" (1/1) ... [2024-11-27 20:22:45,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:45" (1/1) ... [2024-11-27 20:22:45,624 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:45" (1/1) ... [2024-11-27 20:22:45,656 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-27 20:22:45,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:45" (1/1) ... [2024-11-27 20:22:45,656 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:45" (1/1) ... [2024-11-27 20:22:45,673 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:45" (1/1) ... [2024-11-27 20:22:45,674 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:45" (1/1) ... [2024-11-27 20:22:45,682 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:45" (1/1) ... [2024-11-27 20:22:45,684 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:45" (1/1) ... [2024-11-27 20:22:45,685 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:45" (1/1) ... [2024-11-27 20:22:45,687 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:22:45,688 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:22:45,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:22:45,689 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:22:45,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:45" (1/1) ... [2024-11-27 20:22:45,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:22:45,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:22:45,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:22:45,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:22:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:22:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 20:22:45,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 20:22:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 20:22:45,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 20:22:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-27 20:22:45,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-27 20:22:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:22:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:22:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:22:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:22:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:22:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:22:45,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:22:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:22:45,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:22:45,786 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:22:45,913 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:22:45,915 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:22:46,329 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:22:46,329 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:22:46,662 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:22:46,662 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 20:22:46,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:22:46 BoogieIcfgContainer [2024-11-27 20:22:46,663 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:22:46,666 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:22:46,666 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:22:46,673 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:22:46,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:22:45" (1/3) ... [2024-11-27 20:22:46,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7898f860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:22:46, skipping insertion in model container [2024-11-27 20:22:46,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:45" (2/3) ... [2024-11-27 20:22:46,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7898f860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:22:46, skipping insertion in model container [2024-11-27 20:22:46,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:22:46" (3/3) ... [2024-11-27 20:22:46,676 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2024-11-27 20:22:46,696 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:22:46,698 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-sorted.wvr.c that has 4 procedures, 66 locations, 1 initial locations, 4 loop locations, and 18 error locations. [2024-11-27 20:22:46,699 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:22:46,800 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-27 20:22:46,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 74 transitions, 169 flow [2024-11-27 20:22:46,938 INFO L124 PetriNetUnfolderBase]: 9/71 cut-off events. [2024-11-27 20:22:46,942 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-27 20:22:46,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 71 events. 9/71 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 222 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2024-11-27 20:22:46,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 74 transitions, 169 flow [2024-11-27 20:22:46,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 69 transitions, 153 flow [2024-11-27 20:22:46,969 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:22:47,012 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;@7b94069f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:22:47,013 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-11-27 20:22:47,022 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:22:47,022 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-27 20:22:47,022 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:22:47,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:47,023 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-27 20:22:47,024 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:22:47,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:47,032 INFO L85 PathProgramCache]: Analyzing trace with hash 481440, now seen corresponding path program 1 times [2024-11-27 20:22:47,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:47,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848742855] [2024-11-27 20:22:47,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:47,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:47,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:47,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848742855] [2024-11-27 20:22:47,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848742855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:47,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:47,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:22:47,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115704690] [2024-11-27 20:22:47,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:47,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:22:47,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:47,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:22:47,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:22:47,479 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-27 20:22:47,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 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) [2024-11-27 20:22:47,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:47,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-27 20:22:47,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:48,508 INFO L124 PetriNetUnfolderBase]: 2187/3884 cut-off events. [2024-11-27 20:22:48,509 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-11-27 20:22:48,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7034 conditions, 3884 events. 2187/3884 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 26841 event pairs, 1538 based on Foata normal form. 212/3426 useless extension candidates. Maximal degree in co-relation 6606. Up to 2982 conditions per place. [2024-11-27 20:22:48,620 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 30 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-11-27 20:22:48,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 215 flow [2024-11-27 20:22:48,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:22:48,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:22:48,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-11-27 20:22:48,642 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.597972972972973 [2024-11-27 20:22:48,644 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 153 flow. Second operand 4 states and 177 transitions. [2024-11-27 20:22:48,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 215 flow [2024-11-27 20:22:48,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 206 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-27 20:22:48,677 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 146 flow [2024-11-27 20:22:48,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-11-27 20:22:48,689 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, -3 predicate places. [2024-11-27 20:22:48,689 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 146 flow [2024-11-27 20:22:48,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 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) [2024-11-27 20:22:48,689 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:48,689 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-27 20:22:48,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:22:48,690 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:22:48,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:48,691 INFO L85 PathProgramCache]: Analyzing trace with hash 14925120, now seen corresponding path program 1 times [2024-11-27 20:22:48,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:48,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635376656] [2024-11-27 20:22:48,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:48,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:48,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:48,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635376656] [2024-11-27 20:22:48,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635376656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:48,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:48,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:22:48,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750450371] [2024-11-27 20:22:48,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:48,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:22:48,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:48,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:22:48,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:22:48,813 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-27 20:22:48,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 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) [2024-11-27 20:22:48,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:48,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-27 20:22:48,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:49,543 INFO L124 PetriNetUnfolderBase]: 2188/3888 cut-off events. [2024-11-27 20:22:49,543 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-27 20:22:49,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6982 conditions, 3888 events. 2188/3888 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 26828 event pairs, 1538 based on Foata normal form. 1/3219 useless extension candidates. Maximal degree in co-relation 6954. Up to 2987 conditions per place. [2024-11-27 20:22:49,580 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 33 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2024-11-27 20:22:49,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 232 flow [2024-11-27 20:22:49,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:22:49,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:22:49,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 178 transitions. [2024-11-27 20:22:49,587 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6013513513513513 [2024-11-27 20:22:49,587 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 146 flow. Second operand 4 states and 178 transitions. [2024-11-27 20:22:49,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 232 flow [2024-11-27 20:22:49,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:22:49,594 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 165 flow [2024-11-27 20:22:49,595 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2024-11-27 20:22:49,596 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2024-11-27 20:22:49,596 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 165 flow [2024-11-27 20:22:49,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 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) [2024-11-27 20:22:49,597 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:49,597 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-27 20:22:49,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:22:49,598 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:22:49,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:49,599 INFO L85 PathProgramCache]: Analyzing trace with hash 462780555, now seen corresponding path program 1 times [2024-11-27 20:22:49,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:49,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774670087] [2024-11-27 20:22:49,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:49,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:49,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:49,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:49,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774670087] [2024-11-27 20:22:49,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774670087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:49,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:49,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:22:49,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553413589] [2024-11-27 20:22:49,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:49,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:22:49,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:49,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:22:49,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:22:49,834 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-27 20:22:49,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-11-27 20:22:49,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:49,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-27 20:22:49,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:50,612 INFO L124 PetriNetUnfolderBase]: 2793/4726 cut-off events. [2024-11-27 20:22:50,612 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-27 20:22:50,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8668 conditions, 4726 events. 2793/4726 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 32261 event pairs, 2023 based on Foata normal form. 239/4249 useless extension candidates. Maximal degree in co-relation 8642. Up to 3812 conditions per place. [2024-11-27 20:22:50,661 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 36 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-11-27 20:22:50,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 237 flow [2024-11-27 20:22:50,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:22:50,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:22:50,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-11-27 20:22:50,665 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6126126126126126 [2024-11-27 20:22:50,665 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 165 flow. Second operand 3 states and 136 transitions. [2024-11-27 20:22:50,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 237 flow [2024-11-27 20:22:50,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:22:50,669 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 162 flow [2024-11-27 20:22:50,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2024-11-27 20:22:50,671 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, -2 predicate places. [2024-11-27 20:22:50,671 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 162 flow [2024-11-27 20:22:50,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-11-27 20:22:50,671 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:50,671 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-27 20:22:50,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:22:50,672 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:22:50,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:50,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1461295847, now seen corresponding path program 1 times [2024-11-27 20:22:50,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:50,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870270228] [2024-11-27 20:22:50,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:50,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:50,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:50,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:50,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870270228] [2024-11-27 20:22:50,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870270228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:50,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:50,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 20:22:50,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975203624] [2024-11-27 20:22:50,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:50,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:22:50,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:50,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:22:50,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:22:50,779 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-27 20:22:50,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-11-27 20:22:50,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:50,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-27 20:22:50,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:51,245 INFO L124 PetriNetUnfolderBase]: 2188/3788 cut-off events. [2024-11-27 20:22:51,245 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-27 20:22:51,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6887 conditions, 3788 events. 2188/3788 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 25306 event pairs, 1538 based on Foata normal form. 161/3381 useless extension candidates. Maximal degree in co-relation 6861. Up to 2987 conditions per place. [2024-11-27 20:22:51,276 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 35 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2024-11-27 20:22:51,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 65 transitions, 230 flow [2024-11-27 20:22:51,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:22:51,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:22:51,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-11-27 20:22:51,279 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6036036036036037 [2024-11-27 20:22:51,279 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 162 flow. Second operand 3 states and 134 transitions. [2024-11-27 20:22:51,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 65 transitions, 230 flow [2024-11-27 20:22:51,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:22:51,281 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 158 flow [2024-11-27 20:22:51,282 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2024-11-27 20:22:51,282 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, -3 predicate places. [2024-11-27 20:22:51,282 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 158 flow [2024-11-27 20:22:51,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-11-27 20:22:51,283 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:51,283 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-27 20:22:51,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:22:51,283 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:22:51,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:51,286 INFO L85 PathProgramCache]: Analyzing trace with hash -2041842588, now seen corresponding path program 1 times [2024-11-27 20:22:51,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:51,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230655644] [2024-11-27 20:22:51,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:51,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:51,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:51,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230655644] [2024-11-27 20:22:51,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230655644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:22:51,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930412565] [2024-11-27 20:22:51,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:51,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:22:51,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:22:51,481 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:22:51,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:22:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:51,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:22:51,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:22:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:51,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:22:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:51,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930412565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:22:51,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:22:51,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-27 20:22:51,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106283740] [2024-11-27 20:22:51,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:22:51,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:22:51,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:51,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:22:51,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:22:51,735 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-27 20:22:51,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 158 flow. Second operand has 10 states, 10 states have (on average 36.0) internal successors, (360), 10 states have internal predecessors, (360), 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) [2024-11-27 20:22:51,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:51,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-27 20:22:51,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:52,301 INFO L124 PetriNetUnfolderBase]: 2191/3800 cut-off events. [2024-11-27 20:22:52,302 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-27 20:22:52,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6922 conditions, 3800 events. 2191/3800 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 25476 event pairs, 1538 based on Foata normal form. 0/3227 useless extension candidates. Maximal degree in co-relation 6913. Up to 2990 conditions per place. [2024-11-27 20:22:52,335 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 33 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-11-27 20:22:52,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 289 flow [2024-11-27 20:22:52,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:22:52,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:22:52,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 399 transitions. [2024-11-27 20:22:52,338 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5391891891891892 [2024-11-27 20:22:52,338 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 158 flow. Second operand 10 states and 399 transitions. [2024-11-27 20:22:52,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 289 flow [2024-11-27 20:22:52,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:22:52,344 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 240 flow [2024-11-27 20:22:52,344 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=240, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-11-27 20:22:52,345 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2024-11-27 20:22:52,345 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 240 flow [2024-11-27 20:22:52,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 36.0) internal successors, (360), 10 states have internal predecessors, (360), 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) [2024-11-27 20:22:52,346 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:52,346 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:52,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:22:52,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:22:52,547 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:22:52,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:52,548 INFO L85 PathProgramCache]: Analyzing trace with hash -323405936, now seen corresponding path program 1 times [2024-11-27 20:22:52,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:52,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951810007] [2024-11-27 20:22:52,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:52,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:52,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:52,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951810007] [2024-11-27 20:22:52,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951810007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:52,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:52,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:22:52,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593114270] [2024-11-27 20:22:52,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:52,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:22:52,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:52,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:22:52,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:22:52,686 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-27 20:22:52,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-11-27 20:22:52,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:52,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-27 20:22:52,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:53,609 INFO L124 PetriNetUnfolderBase]: 4376/7512 cut-off events. [2024-11-27 20:22:53,610 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-27 20:22:53,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13668 conditions, 7512 events. 4376/7512 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 51817 event pairs, 1846 based on Foata normal form. 100/6634 useless extension candidates. Maximal degree in co-relation 13655. Up to 4045 conditions per place. [2024-11-27 20:22:53,680 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 69 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-11-27 20:22:53,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 99 transitions, 437 flow [2024-11-27 20:22:53,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:22:53,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:22:53,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 167 transitions. [2024-11-27 20:22:53,683 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7522522522522522 [2024-11-27 20:22:53,683 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 240 flow. Second operand 3 states and 167 transitions. [2024-11-27 20:22:53,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 99 transitions, 437 flow [2024-11-27 20:22:53,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 99 transitions, 407 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-27 20:22:53,689 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 231 flow [2024-11-27 20:22:53,692 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2024-11-27 20:22:53,693 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2024-11-27 20:22:53,693 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 231 flow [2024-11-27 20:22:53,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-11-27 20:22:53,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:53,694 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:53,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:22:53,694 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:22:53,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:53,695 INFO L85 PathProgramCache]: Analyzing trace with hash -530768146, now seen corresponding path program 1 times [2024-11-27 20:22:53,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:53,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919365358] [2024-11-27 20:22:53,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:53,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:53,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:53,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:53,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919365358] [2024-11-27 20:22:53,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919365358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:53,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:53,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:22:53,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943114258] [2024-11-27 20:22:53,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:53,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:22:53,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:53,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:22:53,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:22:53,808 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-27 20:22:53,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:53,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:53,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-27 20:22:53,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:55,637 INFO L124 PetriNetUnfolderBase]: 7512/12823 cut-off events. [2024-11-27 20:22:55,637 INFO L125 PetriNetUnfolderBase]: For 1478/1478 co-relation queries the response was YES. [2024-11-27 20:22:55,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24624 conditions, 12823 events. 7512/12823 cut-off events. For 1478/1478 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 97487 event pairs, 3299 based on Foata normal form. 187/11402 useless extension candidates. Maximal degree in co-relation 24611. Up to 6727 conditions per place. [2024-11-27 20:22:55,759 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 72 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2024-11-27 20:22:55,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 102 transitions, 449 flow [2024-11-27 20:22:55,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:22:55,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:22:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-11-27 20:22:55,762 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7477477477477478 [2024-11-27 20:22:55,762 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 231 flow. Second operand 3 states and 166 transitions. [2024-11-27 20:22:55,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 102 transitions, 449 flow [2024-11-27 20:22:55,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 102 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:22:55,770 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 249 flow [2024-11-27 20:22:55,773 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2024-11-27 20:22:55,774 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 10 predicate places. [2024-11-27 20:22:55,775 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 249 flow [2024-11-27 20:22:55,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:55,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:55,775 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:55,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:22:55,775 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:22:55,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:55,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1435649908, now seen corresponding path program 1 times [2024-11-27 20:22:55,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:55,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270050138] [2024-11-27 20:22:55,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:55,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:55,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:55,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:55,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270050138] [2024-11-27 20:22:55,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270050138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:55,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:55,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:22:55,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844085562] [2024-11-27 20:22:55,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:55,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:22:55,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:55,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:22:55,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:22:55,948 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-27 20:22:55,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:55,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:55,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-27 20:22:55,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:57,422 INFO L124 PetriNetUnfolderBase]: 8774/14414 cut-off events. [2024-11-27 20:22:57,422 INFO L125 PetriNetUnfolderBase]: For 2828/2828 co-relation queries the response was YES. [2024-11-27 20:22:57,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29733 conditions, 14414 events. 8774/14414 cut-off events. For 2828/2828 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 103857 event pairs, 3895 based on Foata normal form. 388/13888 useless extension candidates. Maximal degree in co-relation 29719. Up to 8380 conditions per place. [2024-11-27 20:22:57,651 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 95 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2024-11-27 20:22:57,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 571 flow [2024-11-27 20:22:57,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:22:57,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:22:57,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 215 transitions. [2024-11-27 20:22:57,653 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7263513513513513 [2024-11-27 20:22:57,653 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 249 flow. Second operand 4 states and 215 transitions. [2024-11-27 20:22:57,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 571 flow [2024-11-27 20:22:57,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 124 transitions, 562 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:22:57,659 INFO L231 Difference]: Finished difference. Result has 84 places, 79 transitions, 267 flow [2024-11-27 20:22:57,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=84, PETRI_TRANSITIONS=79} [2024-11-27 20:22:57,660 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 14 predicate places. [2024-11-27 20:22:57,661 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 267 flow [2024-11-27 20:22:57,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:57,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:57,661 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:57,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:22:57,661 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:22:57,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:57,662 INFO L85 PathProgramCache]: Analyzing trace with hash 726056188, now seen corresponding path program 1 times [2024-11-27 20:22:57,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:57,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079187896] [2024-11-27 20:22:57,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:57,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:57,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:57,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:57,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079187896] [2024-11-27 20:22:57,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079187896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:57,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:57,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:22:57,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266343636] [2024-11-27 20:22:57,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:57,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:22:57,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:57,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:22:57,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:22:57,760 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-27 20:22:57,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 79 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:57,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:57,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-27 20:22:57,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:22:59,364 INFO L124 PetriNetUnfolderBase]: 8473/13129 cut-off events. [2024-11-27 20:22:59,365 INFO L125 PetriNetUnfolderBase]: For 6051/6051 co-relation queries the response was YES. [2024-11-27 20:22:59,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29889 conditions, 13129 events. 8473/13129 cut-off events. For 6051/6051 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 89445 event pairs, 4257 based on Foata normal form. 398/12963 useless extension candidates. Maximal degree in co-relation 29873. Up to 8077 conditions per place. [2024-11-27 20:22:59,466 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 96 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2024-11-27 20:22:59,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 125 transitions, 615 flow [2024-11-27 20:22:59,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:22:59,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:22:59,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 213 transitions. [2024-11-27 20:22:59,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7195945945945946 [2024-11-27 20:22:59,469 INFO L175 Difference]: Start difference. First operand has 84 places, 79 transitions, 267 flow. Second operand 4 states and 213 transitions. [2024-11-27 20:22:59,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 125 transitions, 615 flow [2024-11-27 20:22:59,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 125 transitions, 597 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:22:59,477 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 282 flow [2024-11-27 20:22:59,477 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2024-11-27 20:22:59,478 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 17 predicate places. [2024-11-27 20:22:59,478 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 282 flow [2024-11-27 20:22:59,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:59,479 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:22:59,479 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:59,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:22:59,479 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:22:59,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:59,480 INFO L85 PathProgramCache]: Analyzing trace with hash 802644869, now seen corresponding path program 1 times [2024-11-27 20:22:59,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:59,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526051624] [2024-11-27 20:22:59,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:59,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:59,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:22:59,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:59,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526051624] [2024-11-27 20:22:59,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526051624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:59,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:59,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:22:59,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703371435] [2024-11-27 20:22:59,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:59,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:22:59,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:59,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:22:59,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:22:59,579 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-27 20:22:59,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:22:59,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:22:59,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-27 20:22:59,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:01,585 INFO L124 PetriNetUnfolderBase]: 13128/21403 cut-off events. [2024-11-27 20:23:01,586 INFO L125 PetriNetUnfolderBase]: For 11907/11907 co-relation queries the response was YES. [2024-11-27 20:23:01,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48951 conditions, 21403 events. 13128/21403 cut-off events. For 11907/11907 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 161530 event pairs, 5454 based on Foata normal form. 301/20035 useless extension candidates. Maximal degree in co-relation 48933. Up to 10654 conditions per place. [2024-11-27 20:23:01,755 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 74 selfloop transitions, 9 changer transitions 0/110 dead transitions. [2024-11-27 20:23:01,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 110 transitions, 554 flow [2024-11-27 20:23:01,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:23:01,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:23:01,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-11-27 20:23:01,760 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-11-27 20:23:01,760 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 282 flow. Second operand 4 states and 200 transitions. [2024-11-27 20:23:01,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 110 transitions, 554 flow [2024-11-27 20:23:01,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 110 transitions, 542 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:23:01,818 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 321 flow [2024-11-27 20:23:01,819 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=321, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-11-27 20:23:01,820 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 20 predicate places. [2024-11-27 20:23:01,822 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 321 flow [2024-11-27 20:23:01,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:01,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:01,822 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:01,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:23:01,823 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:23:01,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:01,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2140318701, now seen corresponding path program 1 times [2024-11-27 20:23:01,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:01,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124371460] [2024-11-27 20:23:01,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:01,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:01,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:01,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:01,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124371460] [2024-11-27 20:23:01,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124371460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:01,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671085983] [2024-11-27 20:23:01,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:01,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:01,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:01,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:01,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:23:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:02,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:23:02,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:23:02,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:23:02,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671085983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:02,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:23:02,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2024-11-27 20:23:02,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846768006] [2024-11-27 20:23:02,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:02,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:23:02,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:02,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:23:02,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:23:02,160 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 74 [2024-11-27 20:23:02,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-27 20:23:02,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:02,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 74 [2024-11-27 20:23:02,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:04,324 INFO L124 PetriNetUnfolderBase]: 11874/19155 cut-off events. [2024-11-27 20:23:04,324 INFO L125 PetriNetUnfolderBase]: For 11761/11761 co-relation queries the response was YES. [2024-11-27 20:23:04,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46588 conditions, 19155 events. 11874/19155 cut-off events. For 11761/11761 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 140893 event pairs, 7946 based on Foata normal form. 1/17702 useless extension candidates. Maximal degree in co-relation 46568. Up to 15292 conditions per place. [2024-11-27 20:23:04,465 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 50 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2024-11-27 20:23:04,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 417 flow [2024-11-27 20:23:04,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:23:04,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:23:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-11-27 20:23:04,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6621621621621622 [2024-11-27 20:23:04,467 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 321 flow. Second operand 3 states and 147 transitions. [2024-11-27 20:23:04,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 82 transitions, 417 flow [2024-11-27 20:23:04,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 82 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:23:04,549 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 313 flow [2024-11-27 20:23:04,549 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2024-11-27 20:23:04,550 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 21 predicate places. [2024-11-27 20:23:04,550 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 313 flow [2024-11-27 20:23:04,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-27 20:23:04,551 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:04,551 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-27 20:23:04,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:23:04,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:04,755 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:23:04,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:04,756 INFO L85 PathProgramCache]: Analyzing trace with hash 816945216, now seen corresponding path program 2 times [2024-11-27 20:23:04,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:04,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12767132] [2024-11-27 20:23:04,756 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:23:04,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:04,776 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:23:04,776 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:04,842 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 20:23:04,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:04,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12767132] [2024-11-27 20:23:04,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12767132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:04,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086269494] [2024-11-27 20:23:04,843 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:23:04,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:04,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:04,846 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:04,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:23:04,942 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:23:04,943 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:04,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:23:04,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 20:23:05,001 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:05,059 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 20:23:05,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086269494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:05,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:05,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-27 20:23:05,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368014767] [2024-11-27 20:23:05,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:05,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:23:05,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:05,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:23:05,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:23:05,068 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-27 20:23:05,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 82 transitions, 313 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2024-11-27 20:23:05,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:05,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-27 20:23:05,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:07,454 INFO L124 PetriNetUnfolderBase]: 11874/19154 cut-off events. [2024-11-27 20:23:07,454 INFO L125 PetriNetUnfolderBase]: For 11762/11762 co-relation queries the response was YES. [2024-11-27 20:23:07,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46585 conditions, 19154 events. 11874/19154 cut-off events. For 11762/11762 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 140819 event pairs, 7946 based on Foata normal form. 1/17701 useless extension candidates. Maximal degree in co-relation 46564. Up to 15283 conditions per place. [2024-11-27 20:23:07,606 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 37 selfloop transitions, 15 changer transitions 0/81 dead transitions. [2024-11-27 20:23:07,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 81 transitions, 407 flow [2024-11-27 20:23:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:23:07,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:23:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 174 transitions. [2024-11-27 20:23:07,608 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5878378378378378 [2024-11-27 20:23:07,608 INFO L175 Difference]: Start difference. First operand has 91 places, 82 transitions, 313 flow. Second operand 4 states and 174 transitions. [2024-11-27 20:23:07,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 81 transitions, 407 flow [2024-11-27 20:23:07,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 81 transitions, 393 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-27 20:23:07,677 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 319 flow [2024-11-27 20:23:07,677 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=319, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-11-27 20:23:07,677 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 17 predicate places. [2024-11-27 20:23:07,678 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 319 flow [2024-11-27 20:23:07,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2024-11-27 20:23:07,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:07,678 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:07,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:23:07,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 20:23:07,880 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:23:07,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:07,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1986391607, now seen corresponding path program 1 times [2024-11-27 20:23:07,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:07,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800508929] [2024-11-27 20:23:07,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:07,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:08,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:23:08,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:08,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800508929] [2024-11-27 20:23:08,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800508929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:08,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072288451] [2024-11-27 20:23:08,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:08,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:08,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:08,042 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:08,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:23:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:08,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:23:08,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:23:08,292 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:23:08,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072288451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:08,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:08,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 15 [2024-11-27 20:23:08,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969147651] [2024-11-27 20:23:08,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:08,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:23:08,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:08,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:23:08,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:23:08,949 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 74 [2024-11-27 20:23:08,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 319 flow. Second operand has 15 states, 15 states have (on average 29.466666666666665) internal successors, (442), 15 states have internal predecessors, (442), 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) [2024-11-27 20:23:08,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:08,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 74 [2024-11-27 20:23:08,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:13,678 INFO L124 PetriNetUnfolderBase]: 23965/36375 cut-off events. [2024-11-27 20:23:13,679 INFO L125 PetriNetUnfolderBase]: For 22158/22158 co-relation queries the response was YES. [2024-11-27 20:23:13,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89606 conditions, 36375 events. 23965/36375 cut-off events. For 22158/22158 co-relation queries the response was YES. Maximal size of possible extension queue 1068. Compared 265243 event pairs, 7347 based on Foata normal form. 648/36051 useless extension candidates. Maximal degree in co-relation 89589. Up to 11971 conditions per place. [2024-11-27 20:23:13,896 INFO L140 encePairwiseOnDemand]: 63/74 looper letters, 193 selfloop transitions, 20 changer transitions 0/238 dead transitions. [2024-11-27 20:23:13,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 238 transitions, 1309 flow [2024-11-27 20:23:13,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:23:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 20:23:13,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 498 transitions. [2024-11-27 20:23:13,899 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5608108108108109 [2024-11-27 20:23:13,899 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 319 flow. Second operand 12 states and 498 transitions. [2024-11-27 20:23:13,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 238 transitions, 1309 flow [2024-11-27 20:23:13,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 238 transitions, 1279 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:23:13,984 INFO L231 Difference]: Finished difference. Result has 98 places, 86 transitions, 379 flow [2024-11-27 20:23:13,984 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=379, PETRI_PLACES=98, PETRI_TRANSITIONS=86} [2024-11-27 20:23:13,985 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 28 predicate places. [2024-11-27 20:23:13,985 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 86 transitions, 379 flow [2024-11-27 20:23:13,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 29.466666666666665) internal successors, (442), 15 states have internal predecessors, (442), 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) [2024-11-27 20:23:13,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:13,986 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:13,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:23:14,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 20:23:14,190 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:23:14,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:14,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1056070275, now seen corresponding path program 1 times [2024-11-27 20:23:14,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:14,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043549468] [2024-11-27 20:23:14,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:14,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:23:14,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:14,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043549468] [2024-11-27 20:23:14,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043549468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:14,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:14,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:23:14,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558015296] [2024-11-27 20:23:14,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:14,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:23:14,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:14,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:23:14,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:23:14,310 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-27 20:23:14,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 86 transitions, 379 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:14,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:14,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-27 20:23:14,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:18,317 INFO L124 PetriNetUnfolderBase]: 22935/37144 cut-off events. [2024-11-27 20:23:18,317 INFO L125 PetriNetUnfolderBase]: For 37578/37578 co-relation queries the response was YES. [2024-11-27 20:23:18,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95130 conditions, 37144 events. 22935/37144 cut-off events. For 37578/37578 co-relation queries the response was YES. Maximal size of possible extension queue 1074. Compared 290492 event pairs, 2866 based on Foata normal form. 1584/38526 useless extension candidates. Maximal degree in co-relation 95110. Up to 16680 conditions per place. [2024-11-27 20:23:18,535 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 103 selfloop transitions, 10 changer transitions 0/138 dead transitions. [2024-11-27 20:23:18,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 138 transitions, 867 flow [2024-11-27 20:23:18,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:23:18,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:23:18,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 236 transitions. [2024-11-27 20:23:18,537 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6378378378378379 [2024-11-27 20:23:18,537 INFO L175 Difference]: Start difference. First operand has 98 places, 86 transitions, 379 flow. Second operand 5 states and 236 transitions. [2024-11-27 20:23:18,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 138 transitions, 867 flow [2024-11-27 20:23:18,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 138 transitions, 839 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-27 20:23:18,601 INFO L231 Difference]: Finished difference. Result has 95 places, 84 transitions, 379 flow [2024-11-27 20:23:18,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=95, PETRI_TRANSITIONS=84} [2024-11-27 20:23:18,602 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 25 predicate places. [2024-11-27 20:23:18,602 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 84 transitions, 379 flow [2024-11-27 20:23:18,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:18,602 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:18,602 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:18,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:23:18,603 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:23:18,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:18,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1056069250, now seen corresponding path program 1 times [2024-11-27 20:23:18,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:18,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543218311] [2024-11-27 20:23:18,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:18,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:18,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:23:18,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:18,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543218311] [2024-11-27 20:23:18,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543218311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:18,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:18,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:23:18,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646415737] [2024-11-27 20:23:18,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:18,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:23:18,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:18,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:23:18,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:23:18,721 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 74 [2024-11-27 20:23:18,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 84 transitions, 379 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2024-11-27 20:23:18,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:18,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 74 [2024-11-27 20:23:18,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:22,049 INFO L124 PetriNetUnfolderBase]: 20154/32955 cut-off events. [2024-11-27 20:23:22,049 INFO L125 PetriNetUnfolderBase]: For 36957/36957 co-relation queries the response was YES. [2024-11-27 20:23:22,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86720 conditions, 32955 events. 20154/32955 cut-off events. For 36957/36957 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 258222 event pairs, 6971 based on Foata normal form. 1056/32785 useless extension candidates. Maximal degree in co-relation 86700. Up to 13662 conditions per place. [2024-11-27 20:23:22,249 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 80 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-11-27 20:23:22,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 109 transitions, 664 flow [2024-11-27 20:23:22,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:23:22,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:23:22,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2024-11-27 20:23:22,251 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-11-27 20:23:22,251 INFO L175 Difference]: Start difference. First operand has 95 places, 84 transitions, 379 flow. Second operand 4 states and 172 transitions. [2024-11-27 20:23:22,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 109 transitions, 664 flow [2024-11-27 20:23:22,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 109 transitions, 630 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-27 20:23:22,422 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 343 flow [2024-11-27 20:23:22,423 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=343, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2024-11-27 20:23:22,423 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 21 predicate places. [2024-11-27 20:23:22,423 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 343 flow [2024-11-27 20:23:22,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2024-11-27 20:23:22,423 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:22,424 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:22,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 20:23:22,424 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:23:22,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:22,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1621560420, now seen corresponding path program 1 times [2024-11-27 20:23:22,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:22,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107713580] [2024-11-27 20:23:22,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:22,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:22,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:22,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:22,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107713580] [2024-11-27 20:23:22,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107713580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:22,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074694761] [2024-11-27 20:23:22,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:22,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:22,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:22,576 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:22,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:23:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:22,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:23:22,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:22,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:22,855 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:23,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074694761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:23,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:23,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2024-11-27 20:23:23,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868238605] [2024-11-27 20:23:23,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:23,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 20:23:23,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:23,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 20:23:23,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:23:23,397 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 74 [2024-11-27 20:23:23,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 82 transitions, 343 flow. Second operand has 18 states, 18 states have (on average 28.055555555555557) internal successors, (505), 18 states have internal predecessors, (505), 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) [2024-11-27 20:23:23,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:23,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 74 [2024-11-27 20:23:23,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:27,306 INFO L124 PetriNetUnfolderBase]: 23570/35183 cut-off events. [2024-11-27 20:23:27,307 INFO L125 PetriNetUnfolderBase]: For 31220/31220 co-relation queries the response was YES. [2024-11-27 20:23:27,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93258 conditions, 35183 events. 23570/35183 cut-off events. For 31220/31220 co-relation queries the response was YES. Maximal size of possible extension queue 1006. Compared 247065 event pairs, 14519 based on Foata normal form. 76/33268 useless extension candidates. Maximal degree in co-relation 93238. Up to 26294 conditions per place. [2024-11-27 20:23:27,563 INFO L140 encePairwiseOnDemand]: 66/74 looper letters, 94 selfloop transitions, 16 changer transitions 9/143 dead transitions. [2024-11-27 20:23:27,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 143 transitions, 826 flow [2024-11-27 20:23:27,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:23:27,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 20:23:27,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 324 transitions. [2024-11-27 20:23:27,565 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-11-27 20:23:27,566 INFO L175 Difference]: Start difference. First operand has 91 places, 82 transitions, 343 flow. Second operand 9 states and 324 transitions. [2024-11-27 20:23:27,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 143 transitions, 826 flow [2024-11-27 20:23:27,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 143 transitions, 818 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:23:27,682 INFO L231 Difference]: Finished difference. Result has 99 places, 85 transitions, 399 flow [2024-11-27 20:23:27,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=399, PETRI_PLACES=99, PETRI_TRANSITIONS=85} [2024-11-27 20:23:27,683 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 29 predicate places. [2024-11-27 20:23:27,683 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 85 transitions, 399 flow [2024-11-27 20:23:27,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 28.055555555555557) internal successors, (505), 18 states have internal predecessors, (505), 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) [2024-11-27 20:23:27,684 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:27,684 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:27,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:23:27,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 20:23:27,885 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:23:27,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:27,885 INFO L85 PathProgramCache]: Analyzing trace with hash -470181627, now seen corresponding path program 1 times [2024-11-27 20:23:27,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:27,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770375374] [2024-11-27 20:23:27,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:27,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:23:27,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:27,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770375374] [2024-11-27 20:23:27,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770375374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:27,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108244171] [2024-11-27 20:23:27,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:27,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:27,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:27,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:28,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:23:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:28,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:23:28,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:28,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:23:28,227 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:23:28,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108244171] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:28,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:28,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2024-11-27 20:23:28,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203488710] [2024-11-27 20:23:28,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:28,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:23:28,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:28,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:23:28,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:23:28,747 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 74 [2024-11-27 20:23:28,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 85 transitions, 399 flow. Second operand has 14 states, 14 states have (on average 28.142857142857142) internal successors, (394), 14 states have internal predecessors, (394), 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) [2024-11-27 20:23:28,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:28,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 74 [2024-11-27 20:23:28,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:34,758 INFO L124 PetriNetUnfolderBase]: 37084/57308 cut-off events. [2024-11-27 20:23:34,758 INFO L125 PetriNetUnfolderBase]: For 49623/49623 co-relation queries the response was YES. [2024-11-27 20:23:34,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147315 conditions, 57308 events. 37084/57308 cut-off events. For 49623/49623 co-relation queries the response was YES. Maximal size of possible extension queue 1411. Compared 438850 event pairs, 11851 based on Foata normal form. 470/55142 useless extension candidates. Maximal degree in co-relation 147292. Up to 19341 conditions per place. [2024-11-27 20:23:35,121 INFO L140 encePairwiseOnDemand]: 62/74 looper letters, 235 selfloop transitions, 21 changer transitions 13/290 dead transitions. [2024-11-27 20:23:35,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 290 transitions, 1840 flow [2024-11-27 20:23:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:23:35,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-27 20:23:35,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 538 transitions. [2024-11-27 20:23:35,124 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5592515592515592 [2024-11-27 20:23:35,124 INFO L175 Difference]: Start difference. First operand has 99 places, 85 transitions, 399 flow. Second operand 13 states and 538 transitions. [2024-11-27 20:23:35,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 290 transitions, 1840 flow [2024-11-27 20:23:35,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 290 transitions, 1827 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 20:23:35,343 INFO L231 Difference]: Finished difference. Result has 110 places, 84 transitions, 430 flow [2024-11-27 20:23:35,344 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=430, PETRI_PLACES=110, PETRI_TRANSITIONS=84} [2024-11-27 20:23:35,344 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 40 predicate places. [2024-11-27 20:23:35,344 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 84 transitions, 430 flow [2024-11-27 20:23:35,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 28.142857142857142) internal successors, (394), 14 states have internal predecessors, (394), 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) [2024-11-27 20:23:35,344 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:35,345 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:35,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 20:23:35,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:23:35,545 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:23:35,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:35,546 INFO L85 PathProgramCache]: Analyzing trace with hash 381547656, now seen corresponding path program 2 times [2024-11-27 20:23:35,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:35,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923285282] [2024-11-27 20:23:35,546 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:23:35,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:35,566 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:23:35,567 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:35,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 20:23:35,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:35,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923285282] [2024-11-27 20:23:35,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923285282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:35,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:35,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:23:35,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580775129] [2024-11-27 20:23:35,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:35,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:23:35,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:35,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:23:35,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:23:35,693 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 74 [2024-11-27 20:23:35,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 84 transitions, 430 flow. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:35,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:35,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 74 [2024-11-27 20:23:35,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:40,837 INFO L124 PetriNetUnfolderBase]: 27647/43248 cut-off events. [2024-11-27 20:23:40,838 INFO L125 PetriNetUnfolderBase]: For 58193/58193 co-relation queries the response was YES. [2024-11-27 20:23:41,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121073 conditions, 43248 events. 27647/43248 cut-off events. For 58193/58193 co-relation queries the response was YES. Maximal size of possible extension queue 1211. Compared 333047 event pairs, 10027 based on Foata normal form. 1376/42997 useless extension candidates. Maximal degree in co-relation 121046. Up to 18687 conditions per place. [2024-11-27 20:23:41,192 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 102 selfloop transitions, 5 changer transitions 3/137 dead transitions. [2024-11-27 20:23:41,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 137 transitions, 940 flow [2024-11-27 20:23:41,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:23:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:23:41,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 209 transitions. [2024-11-27 20:23:41,194 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5648648648648649 [2024-11-27 20:23:41,194 INFO L175 Difference]: Start difference. First operand has 110 places, 84 transitions, 430 flow. Second operand 5 states and 209 transitions. [2024-11-27 20:23:41,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 137 transitions, 940 flow [2024-11-27 20:23:41,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 137 transitions, 855 flow, removed 14 selfloop flow, removed 13 redundant places. [2024-11-27 20:23:41,837 INFO L231 Difference]: Finished difference. Result has 96 places, 82 transitions, 384 flow [2024-11-27 20:23:41,837 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=96, PETRI_TRANSITIONS=82} [2024-11-27 20:23:41,838 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 26 predicate places. [2024-11-27 20:23:41,838 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 82 transitions, 384 flow [2024-11-27 20:23:41,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:23:41,838 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:41,838 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:41,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 20:23:41,839 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:23:41,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:41,839 INFO L85 PathProgramCache]: Analyzing trace with hash 208584439, now seen corresponding path program 1 times [2024-11-27 20:23:41,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:41,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913483797] [2024-11-27 20:23:41,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:41,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 20:23:41,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:41,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913483797] [2024-11-27 20:23:41,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913483797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:41,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425292894] [2024-11-27 20:23:41,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:41,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:41,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:41,953 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:41,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:23:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:42,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 20:23:42,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:42,351 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:42,351 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:42,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425292894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:42,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:42,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 24 [2024-11-27 20:23:42,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335976556] [2024-11-27 20:23:42,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:42,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 20:23:42,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:42,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 20:23:42,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:23:43,540 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 74 [2024-11-27 20:23:43,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 82 transitions, 384 flow. Second operand has 24 states, 24 states have (on average 28.833333333333332) internal successors, (692), 24 states have internal predecessors, (692), 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) [2024-11-27 20:23:43,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:43,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 74 [2024-11-27 20:23:43,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:23:51,497 INFO L124 PetriNetUnfolderBase]: 39280/59325 cut-off events. [2024-11-27 20:23:51,497 INFO L125 PetriNetUnfolderBase]: For 57953/57953 co-relation queries the response was YES. [2024-11-27 20:23:51,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163721 conditions, 59325 events. 39280/59325 cut-off events. For 57953/57953 co-relation queries the response was YES. Maximal size of possible extension queue 1584. Compared 458452 event pairs, 4494 based on Foata normal form. 1968/60086 useless extension candidates. Maximal degree in co-relation 163698. Up to 15338 conditions per place. [2024-11-27 20:23:51,883 INFO L140 encePairwiseOnDemand]: 63/74 looper letters, 251 selfloop transitions, 25 changer transitions 20/319 dead transitions. [2024-11-27 20:23:51,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 319 transitions, 1974 flow [2024-11-27 20:23:51,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:23:51,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-27 20:23:51,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 682 transitions. [2024-11-27 20:23:51,887 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5421303656597775 [2024-11-27 20:23:51,887 INFO L175 Difference]: Start difference. First operand has 96 places, 82 transitions, 384 flow. Second operand 17 states and 682 transitions. [2024-11-27 20:23:51,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 319 transitions, 1974 flow [2024-11-27 20:23:52,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 319 transitions, 1892 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 20:23:52,472 INFO L231 Difference]: Finished difference. Result has 106 places, 85 transitions, 452 flow [2024-11-27 20:23:52,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=452, PETRI_PLACES=106, PETRI_TRANSITIONS=85} [2024-11-27 20:23:52,473 INFO L279 CegarLoopForPetriNet]: 70 programPoint places, 36 predicate places. [2024-11-27 20:23:52,473 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 85 transitions, 452 flow [2024-11-27 20:23:52,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 28.833333333333332) internal successors, (692), 24 states have internal predecessors, (692), 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) [2024-11-27 20:23:52,474 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:23:52,474 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:52,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:23:52,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:52,675 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-27 20:23:52,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:52,675 INFO L85 PathProgramCache]: Analyzing trace with hash 657913051, now seen corresponding path program 1 times [2024-11-27 20:23:52,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:52,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529296622] [2024-11-27 20:23:52,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:52,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:52,832 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 20:23:52,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:52,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529296622] [2024-11-27 20:23:52,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529296622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:52,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277425453] [2024-11-27 20:23:52,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:52,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:52,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:52,836 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:52,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a226739-4c74-4647-872d-b04802d8529c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:23:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:52,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 20:23:52,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:53,174 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:23:53,455 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:53,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277425453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:23:53,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:23:53,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 23 [2024-11-27 20:23:53,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905979233] [2024-11-27 20:23:53,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:23:53,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 20:23:53,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:53,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 20:23:53,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:23:54,008 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 74 [2024-11-27 20:23:54,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 85 transitions, 452 flow. Second operand has 23 states, 23 states have (on average 27.608695652173914) internal successors, (635), 23 states have internal predecessors, (635), 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) [2024-11-27 20:23:54,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:23:54,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 74 [2024-11-27 20:23:54,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand