./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.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_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/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_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/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_4331c261-32b0-4863-9d66-5f28c658e7b0/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 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:13:21,526 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:13:21,637 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-27 20:13:21,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:13:21,648 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:13:21,689 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:13:21,690 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:13:21,690 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:13:21,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:13:21,691 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:13:21,691 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:13:21,691 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:13:21,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:13:21,691 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:13:21,691 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:13:21,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:13:21,692 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:13:21,692 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:13:21,694 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:13:21,694 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:13:21,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:13:21,694 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:13:21,695 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:13:21,695 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:13:21,695 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 20:13:21,695 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:13:21,695 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:13:21,695 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:13:21,695 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:13:21,696 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:13:21,696 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:13:21,696 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:13:21,696 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:13:21,696 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:13:21,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:13:21,697 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:13:21,697 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:13:21,697 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:13:21,697 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:13:21,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:13:21,697 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:13:21,697 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:13:21,697 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:13:21,697 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:13:21,698 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:13:21,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:13:21,698 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:13:21,698 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:13:21,698 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:13:21,698 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:13:21,698 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_4331c261-32b0-4863-9d66-5f28c658e7b0/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 -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2024-11-27 20:13:22,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:13:22,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:13:22,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:13:22,043 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:13:22,044 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:13:22,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-11-27 20:13:25,067 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/data/f8e0b60ef/e94c8e5381dc4735bdc888f1672d990a/FLAG0cd3e193e [2024-11-27 20:13:25,396 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:13:25,397 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-11-27 20:13:25,411 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/data/f8e0b60ef/e94c8e5381dc4735bdc888f1672d990a/FLAG0cd3e193e [2024-11-27 20:13:25,435 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/data/f8e0b60ef/e94c8e5381dc4735bdc888f1672d990a [2024-11-27 20:13:25,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:13:25,439 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:13:25,443 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:13:25,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:13:25,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:13:25,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:13:25" (1/1) ... [2024-11-27 20:13:25,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51bee056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:25, skipping insertion in model container [2024-11-27 20:13:25,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:13:25" (1/1) ... [2024-11-27 20:13:25,481 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:13:25,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:13:25,737 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:13:25,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:13:25,808 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:13:25,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:25 WrapperNode [2024-11-27 20:13:25,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:13:25,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:13:25,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:13:25,811 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:13:25,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:25" (1/1) ... [2024-11-27 20:13:25,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:25" (1/1) ... [2024-11-27 20:13:25,871 INFO L138 Inliner]: procedures = 24, calls = 49, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 343 [2024-11-27 20:13:25,875 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:13:25,876 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:13:25,876 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:13:25,876 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:13:25,889 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:25" (1/1) ... [2024-11-27 20:13:25,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:25" (1/1) ... [2024-11-27 20:13:25,897 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:25" (1/1) ... [2024-11-27 20:13:25,925 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-27 20:13:25,925 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:25" (1/1) ... [2024-11-27 20:13:25,926 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:25" (1/1) ... [2024-11-27 20:13:25,938 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:25" (1/1) ... [2024-11-27 20:13:25,939 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:25" (1/1) ... [2024-11-27 20:13:25,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:25" (1/1) ... [2024-11-27 20:13:25,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:25" (1/1) ... [2024-11-27 20:13:25,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:25" (1/1) ... [2024-11-27 20:13:25,960 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:13:25,964 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:13:25,964 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:13:25,964 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:13:25,965 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:25" (1/1) ... [2024-11-27 20:13:25,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:13:25,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:13:26,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:13:26,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:13:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:13:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 20:13:26,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 20:13:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 20:13:26,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 20:13:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-27 20:13:26,037 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-27 20:13:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:13:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:13:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:13:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:13:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-27 20:13:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-27 20:13:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:13:26,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:13:26,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:13:26,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:13:26,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:13:26,039 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 20:13:26,165 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:13:26,167 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:13:26,808 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:13:26,808 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:13:27,426 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:13:27,427 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-27 20:13:27,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:13:27 BoogieIcfgContainer [2024-11-27 20:13:27,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:13:27,430 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:13:27,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:13:27,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:13:27,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:13:25" (1/3) ... [2024-11-27 20:13:27,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9fb8f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:13:27, skipping insertion in model container [2024-11-27 20:13:27,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:13:25" (2/3) ... [2024-11-27 20:13:27,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9fb8f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:13:27, skipping insertion in model container [2024-11-27 20:13:27,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:13:27" (3/3) ... [2024-11-27 20:13:27,441 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2024-11-27 20:13:27,459 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:13:27,460 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-ring-nondet.wvr.c that has 4 procedures, 81 locations, 1 initial locations, 6 loop locations, and 32 error locations. [2024-11-27 20:13:27,461 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:13:27,616 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-27 20:13:27,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 92 transitions, 205 flow [2024-11-27 20:13:27,734 INFO L124 PetriNetUnfolderBase]: 12/89 cut-off events. [2024-11-27 20:13:27,738 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-27 20:13:27,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 89 events. 12/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 338 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2024-11-27 20:13:27,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 92 transitions, 205 flow [2024-11-27 20:13:27,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 87 transitions, 189 flow [2024-11-27 20:13:27,766 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:13:27,790 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;@6ceb909f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:13:27,791 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-11-27 20:13:27,797 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:13:27,797 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-27 20:13:27,797 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:13:27,797 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:27,798 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-27 20:13:27,799 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:13:27,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:27,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1061069, now seen corresponding path program 1 times [2024-11-27 20:13:27,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:27,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843689843] [2024-11-27 20:13:27,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:27,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:28,134 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 20:13:28,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:28,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843689843] [2024-11-27 20:13:28,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843689843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:28,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:28,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:13:28,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256864507] [2024-11-27 20:13:28,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:28,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:13:28,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:28,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:13:28,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:13:28,222 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 92 [2024-11-27 20:13:28,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 87 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 20:13:28,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:28,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 92 [2024-11-27 20:13:28,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:30,586 INFO L124 PetriNetUnfolderBase]: 9136/14555 cut-off events. [2024-11-27 20:13:30,586 INFO L125 PetriNetUnfolderBase]: For 433/433 co-relation queries the response was YES. [2024-11-27 20:13:30,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27645 conditions, 14555 events. 9136/14555 cut-off events. For 433/433 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 104718 event pairs, 8468 based on Foata normal form. 3/8543 useless extension candidates. Maximal degree in co-relation 26872. Up to 12592 conditions per place. [2024-11-27 20:13:30,772 INFO L140 encePairwiseOnDemand]: 66/92 looper letters, 58 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2024-11-27 20:13:30,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 323 flow [2024-11-27 20:13:30,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:13:30,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:13:30,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-27 20:13:30,786 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-11-27 20:13:30,788 INFO L175 Difference]: Start difference. First operand has 85 places, 87 transitions, 189 flow. Second operand 4 states and 168 transitions. [2024-11-27 20:13:30,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 323 flow [2024-11-27 20:13:30,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 314 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-27 20:13:30,807 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 248 flow [2024-11-27 20:13:30,810 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2024-11-27 20:13:30,815 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, -5 predicate places. [2024-11-27 20:13:30,817 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 248 flow [2024-11-27 20:13:30,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 20:13:30,817 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:30,817 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-27 20:13:30,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:13:30,818 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:13:30,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:30,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1546550448, now seen corresponding path program 1 times [2024-11-27 20:13:30,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:30,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606912763] [2024-11-27 20:13:30,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:30,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:31,038 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 20:13:31,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:31,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606912763] [2024-11-27 20:13:31,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606912763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:13:31,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389958040] [2024-11-27 20:13:31,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:31,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:13:31,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:13:31,042 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:13:31,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:13:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:31,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:13:31,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:13:31,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:13:31,239 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:13:31,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389958040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:31,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:13:31,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 20:13:31,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938913799] [2024-11-27 20:13:31,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:31,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:13:31,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:31,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:13:31,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:13:31,274 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 92 [2024-11-27 20:13:31,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 20:13:31,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:31,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 92 [2024-11-27 20:13:31,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:33,271 INFO L124 PetriNetUnfolderBase]: 9136/14552 cut-off events. [2024-11-27 20:13:33,272 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-11-27 20:13:33,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27543 conditions, 14552 events. 9136/14552 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 104728 event pairs, 8468 based on Foata normal form. 3/8545 useless extension candidates. Maximal degree in co-relation 27470. Up to 12577 conditions per place. [2024-11-27 20:13:33,369 INFO L140 encePairwiseOnDemand]: 79/92 looper letters, 48 selfloop transitions, 17 changer transitions 0/83 dead transitions. [2024-11-27 20:13:33,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 83 transitions, 366 flow [2024-11-27 20:13:33,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:13:33,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:13:33,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-11-27 20:13:33,374 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35144927536231885 [2024-11-27 20:13:33,374 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 248 flow. Second operand 6 states and 194 transitions. [2024-11-27 20:13:33,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 83 transitions, 366 flow [2024-11-27 20:13:33,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 83 transitions, 366 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 20:13:33,379 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 270 flow [2024-11-27 20:13:33,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2024-11-27 20:13:33,381 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, -3 predicate places. [2024-11-27 20:13:33,382 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 270 flow [2024-11-27 20:13:33,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 20:13:33,382 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:33,383 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-27 20:13:33,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:13:33,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:13:33,584 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:13:33,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:33,585 INFO L85 PathProgramCache]: Analyzing trace with hash 698424654, now seen corresponding path program 1 times [2024-11-27 20:13:33,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:33,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138254821] [2024-11-27 20:13:33,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:33,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:33,774 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 20:13:33,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:33,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138254821] [2024-11-27 20:13:33,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138254821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:13:33,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197075495] [2024-11-27 20:13:33,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:33,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:13:33,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:13:33,780 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:13:33,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:13:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:33,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:13:33,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:13:33,935 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 20:13:33,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:13:33,989 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 20:13:33,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197075495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:13:33,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:13:33,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-27 20:13:33,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262991134] [2024-11-27 20:13:33,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:13:33,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:13:33,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:33,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:13:33,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:13:34,038 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 92 [2024-11-27 20:13:34,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 270 flow. Second operand has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 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 20:13:34,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:34,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 92 [2024-11-27 20:13:34,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:35,727 INFO L124 PetriNetUnfolderBase]: 9145/14588 cut-off events. [2024-11-27 20:13:35,728 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2024-11-27 20:13:35,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27684 conditions, 14588 events. 9145/14588 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 105139 event pairs, 8468 based on Foata normal form. 9/8587 useless extension candidates. Maximal degree in co-relation 27472. Up to 12592 conditions per place. [2024-11-27 20:13:35,828 INFO L140 encePairwiseOnDemand]: 79/92 looper letters, 55 selfloop transitions, 37 changer transitions 0/110 dead transitions. [2024-11-27 20:13:35,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 110 transitions, 628 flow [2024-11-27 20:13:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:13:35,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:13:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 311 transitions. [2024-11-27 20:13:35,832 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33804347826086956 [2024-11-27 20:13:35,832 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 270 flow. Second operand 10 states and 311 transitions. [2024-11-27 20:13:35,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 110 transitions, 628 flow [2024-11-27 20:13:35,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 110 transitions, 545 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-27 20:13:35,836 INFO L231 Difference]: Finished difference. Result has 89 places, 110 transitions, 485 flow [2024-11-27 20:13:35,837 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=485, PETRI_PLACES=89, PETRI_TRANSITIONS=110} [2024-11-27 20:13:35,837 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 4 predicate places. [2024-11-27 20:13:35,838 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 110 transitions, 485 flow [2024-11-27 20:13:35,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 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 20:13:35,838 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:35,838 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:35,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:13:36,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:13:36,043 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:13:36,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:36,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1312750334, now seen corresponding path program 1 times [2024-11-27 20:13:36,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:36,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015714967] [2024-11-27 20:13:36,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:36,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:36,336 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 20:13:36,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:36,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015714967] [2024-11-27 20:13:36,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015714967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:36,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:36,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:13:36,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611112412] [2024-11-27 20:13:36,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:36,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:13:36,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:36,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:13:36,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:13:36,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-27 20:13:36,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 110 transitions, 485 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 20:13:36,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:36,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-27 20:13:36,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:37,756 INFO L124 PetriNetUnfolderBase]: 9373/15035 cut-off events. [2024-11-27 20:13:37,756 INFO L125 PetriNetUnfolderBase]: For 271/271 co-relation queries the response was YES. [2024-11-27 20:13:37,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28623 conditions, 15035 events. 9373/15035 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 107942 event pairs, 8675 based on Foata normal form. 112/9074 useless extension candidates. Maximal degree in co-relation 28465. Up to 12618 conditions per place. [2024-11-27 20:13:37,857 INFO L140 encePairwiseOnDemand]: 84/92 looper letters, 133 selfloop transitions, 3 changer transitions 1/158 dead transitions. [2024-11-27 20:13:37,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 158 transitions, 1011 flow [2024-11-27 20:13:37,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:13:37,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:13:37,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2024-11-27 20:13:37,859 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5244565217391305 [2024-11-27 20:13:37,859 INFO L175 Difference]: Start difference. First operand has 89 places, 110 transitions, 485 flow. Second operand 4 states and 193 transitions. [2024-11-27 20:13:37,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 158 transitions, 1011 flow [2024-11-27 20:13:37,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 158 transitions, 951 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-27 20:13:37,864 INFO L231 Difference]: Finished difference. Result has 91 places, 110 transitions, 465 flow [2024-11-27 20:13:37,864 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=465, PETRI_PLACES=91, PETRI_TRANSITIONS=110} [2024-11-27 20:13:37,865 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 6 predicate places. [2024-11-27 20:13:37,865 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 110 transitions, 465 flow [2024-11-27 20:13:37,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 20:13:37,865 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:37,865 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:37,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:13:37,865 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:13:37,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:37,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1943936500, now seen corresponding path program 1 times [2024-11-27 20:13:37,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:37,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832490011] [2024-11-27 20:13:37,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:37,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:37,994 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 20:13:37,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:37,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832490011] [2024-11-27 20:13:37,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832490011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:37,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:37,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:13:37,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136280433] [2024-11-27 20:13:37,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:37,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:37,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:37,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:37,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:37,996 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-27 20:13:37,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 110 transitions, 465 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 20:13:37,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:37,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-27 20:13:37,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:39,147 INFO L124 PetriNetUnfolderBase]: 9015/14227 cut-off events. [2024-11-27 20:13:39,148 INFO L125 PetriNetUnfolderBase]: For 1083/1083 co-relation queries the response was YES. [2024-11-27 20:13:39,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29324 conditions, 14227 events. 9015/14227 cut-off events. For 1083/1083 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 99555 event pairs, 3351 based on Foata normal form. 257/8621 useless extension candidates. Maximal degree in co-relation 29172. Up to 10420 conditions per place. [2024-11-27 20:13:39,220 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 115 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2024-11-27 20:13:39,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 138 transitions, 768 flow [2024-11-27 20:13:39,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:39,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:13:39,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2024-11-27 20:13:39,223 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-11-27 20:13:39,223 INFO L175 Difference]: Start difference. First operand has 91 places, 110 transitions, 465 flow. Second operand 3 states and 164 transitions. [2024-11-27 20:13:39,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 138 transitions, 768 flow [2024-11-27 20:13:39,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 138 transitions, 764 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-27 20:13:39,232 INFO L231 Difference]: Finished difference. Result has 93 places, 111 transitions, 475 flow [2024-11-27 20:13:39,233 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=475, PETRI_PLACES=93, PETRI_TRANSITIONS=111} [2024-11-27 20:13:39,233 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 8 predicate places. [2024-11-27 20:13:39,233 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 111 transitions, 475 flow [2024-11-27 20:13:39,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 20:13:39,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:39,234 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:39,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:13:39,234 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:13:39,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:39,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1404282107, now seen corresponding path program 1 times [2024-11-27 20:13:39,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:39,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887679572] [2024-11-27 20:13:39,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:39,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:39,544 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 20:13:39,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:39,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887679572] [2024-11-27 20:13:39,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887679572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:13:39,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84967058] [2024-11-27 20:13:39,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:39,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:13:39,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:13:39,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:13:39,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:13:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:39,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:13:39,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:13:39,689 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 20:13:39,689 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:13:39,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84967058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:39,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:13:39,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-27 20:13:39,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924597775] [2024-11-27 20:13:39,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:39,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:39,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:39,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:39,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:13:39,691 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-27 20:13:39,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 111 transitions, 475 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 20:13:39,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:39,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-27 20:13:39,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:40,672 INFO L124 PetriNetUnfolderBase]: 7559/12125 cut-off events. [2024-11-27 20:13:40,672 INFO L125 PetriNetUnfolderBase]: For 1489/1489 co-relation queries the response was YES. [2024-11-27 20:13:40,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25129 conditions, 12125 events. 7559/12125 cut-off events. For 1489/1489 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 83499 event pairs, 6662 based on Foata normal form. 0/8026 useless extension candidates. Maximal degree in co-relation 24976. Up to 10498 conditions per place. [2024-11-27 20:13:40,721 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 87 selfloop transitions, 1 changer transitions 0/109 dead transitions. [2024-11-27 20:13:40,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 109 transitions, 643 flow [2024-11-27 20:13:40,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:40,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:13:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-11-27 20:13:40,723 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2024-11-27 20:13:40,723 INFO L175 Difference]: Start difference. First operand has 93 places, 111 transitions, 475 flow. Second operand 3 states and 134 transitions. [2024-11-27 20:13:40,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 109 transitions, 643 flow [2024-11-27 20:13:40,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 109 transitions, 641 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:13:40,727 INFO L231 Difference]: Finished difference. Result has 92 places, 109 transitions, 467 flow [2024-11-27 20:13:40,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=467, PETRI_PLACES=92, PETRI_TRANSITIONS=109} [2024-11-27 20:13:40,728 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 7 predicate places. [2024-11-27 20:13:40,728 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 109 transitions, 467 flow [2024-11-27 20:13:40,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 20:13:40,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:40,728 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:40,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:13:40,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-27 20:13:40,929 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:13:40,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:40,929 INFO L85 PathProgramCache]: Analyzing trace with hash 891643794, now seen corresponding path program 1 times [2024-11-27 20:13:40,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:40,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675263162] [2024-11-27 20:13:40,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:40,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:41,011 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 20:13:41,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:41,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675263162] [2024-11-27 20:13:41,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675263162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:41,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:41,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:13:41,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219260707] [2024-11-27 20:13:41,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:41,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:41,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:41,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:41,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:41,015 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-27 20:13:41,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 109 transitions, 467 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:41,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:41,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-27 20:13:41,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:41,894 INFO L124 PetriNetUnfolderBase]: 7064/11388 cut-off events. [2024-11-27 20:13:41,894 INFO L125 PetriNetUnfolderBase]: For 1434/1446 co-relation queries the response was YES. [2024-11-27 20:13:41,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23525 conditions, 11388 events. 7064/11388 cut-off events. For 1434/1446 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 76339 event pairs, 3519 based on Foata normal form. 69/7576 useless extension candidates. Maximal degree in co-relation 23508. Up to 9321 conditions per place. [2024-11-27 20:13:41,931 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 104 selfloop transitions, 5 changer transitions 0/130 dead transitions. [2024-11-27 20:13:41,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 130 transitions, 734 flow [2024-11-27 20:13:41,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:13:41,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2024-11-27 20:13:41,933 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2024-11-27 20:13:41,933 INFO L175 Difference]: Start difference. First operand has 92 places, 109 transitions, 467 flow. Second operand 3 states and 154 transitions. [2024-11-27 20:13:41,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 130 transitions, 734 flow [2024-11-27 20:13:41,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 130 transitions, 733 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:13:41,937 INFO L231 Difference]: Finished difference. Result has 94 places, 113 transitions, 501 flow [2024-11-27 20:13:41,937 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=501, PETRI_PLACES=94, PETRI_TRANSITIONS=113} [2024-11-27 20:13:41,937 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2024-11-27 20:13:41,938 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 113 transitions, 501 flow [2024-11-27 20:13:41,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:41,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:41,938 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:41,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:13:41,938 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:13:41,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:41,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1986871037, now seen corresponding path program 1 times [2024-11-27 20:13:41,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:41,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214642605] [2024-11-27 20:13:41,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:41,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:42,008 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 20:13:42,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:42,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214642605] [2024-11-27 20:13:42,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214642605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:42,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:42,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:13:42,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277152008] [2024-11-27 20:13:42,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:42,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:42,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:42,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:42,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:42,010 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-27 20:13:42,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 113 transitions, 501 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 20:13:42,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:42,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-27 20:13:42,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:43,115 INFO L124 PetriNetUnfolderBase]: 7894/12772 cut-off events. [2024-11-27 20:13:43,116 INFO L125 PetriNetUnfolderBase]: For 2999/2999 co-relation queries the response was YES. [2024-11-27 20:13:43,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27754 conditions, 12772 events. 7894/12772 cut-off events. For 2999/2999 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 88689 event pairs, 6314 based on Foata normal form. 0/8819 useless extension candidates. Maximal degree in co-relation 27735. Up to 9397 conditions per place. [2024-11-27 20:13:43,164 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 124 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2024-11-27 20:13:43,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 147 transitions, 834 flow [2024-11-27 20:13:43,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:43,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:13:43,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2024-11-27 20:13:43,165 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6195652173913043 [2024-11-27 20:13:43,165 INFO L175 Difference]: Start difference. First operand has 94 places, 113 transitions, 501 flow. Second operand 3 states and 171 transitions. [2024-11-27 20:13:43,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 147 transitions, 834 flow [2024-11-27 20:13:43,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 147 transitions, 831 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:13:43,172 INFO L231 Difference]: Finished difference. Result has 95 places, 111 transitions, 492 flow [2024-11-27 20:13:43,173 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=95, PETRI_TRANSITIONS=111} [2024-11-27 20:13:43,173 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 10 predicate places. [2024-11-27 20:13:43,173 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 111 transitions, 492 flow [2024-11-27 20:13:43,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 20:13:43,174 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:43,174 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:43,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:13:43,174 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:13:43,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:43,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1986871035, now seen corresponding path program 1 times [2024-11-27 20:13:43,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:43,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358150646] [2024-11-27 20:13:43,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:43,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:43,252 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 20:13:43,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:43,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358150646] [2024-11-27 20:13:43,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358150646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:43,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:43,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:13:43,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791207769] [2024-11-27 20:13:43,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:43,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:43,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:43,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:43,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:13:43,257 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-27 20:13:43,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 111 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 20:13:43,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:43,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-27 20:13:43,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:44,267 INFO L124 PetriNetUnfolderBase]: 7476/12170 cut-off events. [2024-11-27 20:13:44,268 INFO L125 PetriNetUnfolderBase]: For 2927/2963 co-relation queries the response was YES. [2024-11-27 20:13:44,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26467 conditions, 12170 events. 7476/12170 cut-off events. For 2927/2963 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 83909 event pairs, 4116 based on Foata normal form. 0/8523 useless extension candidates. Maximal degree in co-relation 26448. Up to 10362 conditions per place. [2024-11-27 20:13:44,322 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 91 selfloop transitions, 8 changer transitions 0/120 dead transitions. [2024-11-27 20:13:44,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 120 transitions, 717 flow [2024-11-27 20:13:44,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:44,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:13:44,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2024-11-27 20:13:44,324 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2024-11-27 20:13:44,324 INFO L175 Difference]: Start difference. First operand has 95 places, 111 transitions, 492 flow. Second operand 3 states and 142 transitions. [2024-11-27 20:13:44,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 120 transitions, 717 flow [2024-11-27 20:13:44,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 120 transitions, 715 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:13:44,331 INFO L231 Difference]: Finished difference. Result has 96 places, 112 transitions, 526 flow [2024-11-27 20:13:44,331 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=526, PETRI_PLACES=96, PETRI_TRANSITIONS=112} [2024-11-27 20:13:44,332 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 11 predicate places. [2024-11-27 20:13:44,332 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 112 transitions, 526 flow [2024-11-27 20:13:44,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 20:13:44,332 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:44,332 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:44,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:13:44,333 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:13:44,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:44,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1986871036, now seen corresponding path program 1 times [2024-11-27 20:13:44,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:44,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780644582] [2024-11-27 20:13:44,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:44,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:44,560 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 20:13:44,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:44,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780644582] [2024-11-27 20:13:44,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780644582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:13:44,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172964728] [2024-11-27 20:13:44,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:44,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:13:44,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:13:44,563 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:13:44,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:13:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:44,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:13:44,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:13:44,741 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 20:13:44,741 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:13:44,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172964728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:44,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:13:44,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-11-27 20:13:44,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551939381] [2024-11-27 20:13:44,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:44,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:13:44,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:44,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:13:44,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:13:44,745 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-27 20:13:44,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 112 transitions, 526 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 20:13:44,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:44,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-27 20:13:44,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:46,104 INFO L124 PetriNetUnfolderBase]: 7728/12778 cut-off events. [2024-11-27 20:13:46,104 INFO L125 PetriNetUnfolderBase]: For 4128/4160 co-relation queries the response was YES. [2024-11-27 20:13:46,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28462 conditions, 12778 events. 7728/12778 cut-off events. For 4128/4160 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 88911 event pairs, 3366 based on Foata normal form. 206/9421 useless extension candidates. Maximal degree in co-relation 28441. Up to 5774 conditions per place. [2024-11-27 20:13:46,178 INFO L140 encePairwiseOnDemand]: 84/92 looper letters, 102 selfloop transitions, 14 changer transitions 0/137 dead transitions. [2024-11-27 20:13:46,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 137 transitions, 831 flow [2024-11-27 20:13:46,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:13:46,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:13:46,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-11-27 20:13:46,179 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49728260869565216 [2024-11-27 20:13:46,180 INFO L175 Difference]: Start difference. First operand has 96 places, 112 transitions, 526 flow. Second operand 4 states and 183 transitions. [2024-11-27 20:13:46,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 137 transitions, 831 flow [2024-11-27 20:13:46,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 137 transitions, 823 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:13:46,185 INFO L231 Difference]: Finished difference. Result has 99 places, 113 transitions, 587 flow [2024-11-27 20:13:46,185 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=587, PETRI_PLACES=99, PETRI_TRANSITIONS=113} [2024-11-27 20:13:46,186 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 14 predicate places. [2024-11-27 20:13:46,186 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 113 transitions, 587 flow [2024-11-27 20:13:46,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 20:13:46,186 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:46,187 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:46,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:13:46,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 20:13:46,387 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:13:46,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:46,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1463462145, now seen corresponding path program 1 times [2024-11-27 20:13:46,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:46,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401067178] [2024-11-27 20:13:46,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:46,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:46,519 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 20:13:46,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:46,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401067178] [2024-11-27 20:13:46,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401067178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:46,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:46,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:13:46,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552391587] [2024-11-27 20:13:46,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:46,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:13:46,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:46,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:13:46,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:13:46,521 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-27 20:13:46,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 113 transitions, 587 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 20:13:46,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:46,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-27 20:13:46,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:47,946 INFO L124 PetriNetUnfolderBase]: 11655/18505 cut-off events. [2024-11-27 20:13:47,946 INFO L125 PetriNetUnfolderBase]: For 15722/15782 co-relation queries the response was YES. [2024-11-27 20:13:47,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46905 conditions, 18505 events. 11655/18505 cut-off events. For 15722/15782 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 129737 event pairs, 9549 based on Foata normal form. 302/13900 useless extension candidates. Maximal degree in co-relation 46881. Up to 11674 conditions per place. [2024-11-27 20:13:48,042 INFO L140 encePairwiseOnDemand]: 81/92 looper letters, 121 selfloop transitions, 7 changer transitions 0/149 dead transitions. [2024-11-27 20:13:48,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 149 transitions, 1011 flow [2024-11-27 20:13:48,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:13:48,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:13:48,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2024-11-27 20:13:48,043 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5353260869565217 [2024-11-27 20:13:48,043 INFO L175 Difference]: Start difference. First operand has 99 places, 113 transitions, 587 flow. Second operand 4 states and 197 transitions. [2024-11-27 20:13:48,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 149 transitions, 1011 flow [2024-11-27 20:13:48,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 149 transitions, 1010 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:13:48,055 INFO L231 Difference]: Finished difference. Result has 102 places, 113 transitions, 617 flow [2024-11-27 20:13:48,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=617, PETRI_PLACES=102, PETRI_TRANSITIONS=113} [2024-11-27 20:13:48,056 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 17 predicate places. [2024-11-27 20:13:48,056 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 113 transitions, 617 flow [2024-11-27 20:13:48,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 20:13:48,056 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:48,056 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-27 20:13:48,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 20:13:48,057 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:13:48,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:48,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1155132049, now seen corresponding path program 2 times [2024-11-27 20:13:48,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:48,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640209139] [2024-11-27 20:13:48,058 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:13:48,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:48,071 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:13:48,071 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:13:48,105 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 20:13:48,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:48,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640209139] [2024-11-27 20:13:48,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640209139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:13:48,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219893433] [2024-11-27 20:13:48,105 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:13:48,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:13:48,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:13:48,108 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:13:48,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:13:48,198 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:13:48,198 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:13:48,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:13:48,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:13:48,233 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 20:13:48,234 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:13:48,265 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 20:13:48,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219893433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:13:48,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:13:48,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-27 20:13:48,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025434671] [2024-11-27 20:13:48,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:13:48,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:13:48,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:48,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:13:48,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:13:48,291 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 92 [2024-11-27 20:13:48,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 113 transitions, 617 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 20:13:48,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:48,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 92 [2024-11-27 20:13:48,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:49,896 INFO L124 PetriNetUnfolderBase]: 11655/18534 cut-off events. [2024-11-27 20:13:49,896 INFO L125 PetriNetUnfolderBase]: For 16005/16101 co-relation queries the response was YES. [2024-11-27 20:13:49,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48733 conditions, 18534 events. 11655/18534 cut-off events. For 16005/16101 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 130454 event pairs, 9549 based on Foata normal form. 1/13610 useless extension candidates. Maximal degree in co-relation 48708. Up to 16419 conditions per place. [2024-11-27 20:13:49,993 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 78 selfloop transitions, 16 changer transitions 0/112 dead transitions. [2024-11-27 20:13:49,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 112 transitions, 795 flow [2024-11-27 20:13:49,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:13:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:13:49,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-11-27 20:13:49,994 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3695652173913043 [2024-11-27 20:13:49,994 INFO L175 Difference]: Start difference. First operand has 102 places, 113 transitions, 617 flow. Second operand 4 states and 136 transitions. [2024-11-27 20:13:49,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 112 transitions, 795 flow [2024-11-27 20:13:50,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 112 transitions, 789 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:13:50,007 INFO L231 Difference]: Finished difference. Result has 103 places, 112 transitions, 633 flow [2024-11-27 20:13:50,007 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=633, PETRI_PLACES=103, PETRI_TRANSITIONS=112} [2024-11-27 20:13:50,008 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 18 predicate places. [2024-11-27 20:13:50,008 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 112 transitions, 633 flow [2024-11-27 20:13:50,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 20:13:50,008 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:50,008 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:50,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:13:50,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 20:13:50,209 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:13:50,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:50,209 INFO L85 PathProgramCache]: Analyzing trace with hash 521744892, now seen corresponding path program 1 times [2024-11-27 20:13:50,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:50,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778834741] [2024-11-27 20:13:50,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:50,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:50,408 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 20:13:50,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:50,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778834741] [2024-11-27 20:13:50,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778834741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:50,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:50,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:13:50,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746803730] [2024-11-27 20:13:50,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:50,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:13:50,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:50,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:13:50,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:13:50,412 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-27 20:13:50,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 112 transitions, 633 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 20:13:50,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:50,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-27 20:13:50,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:52,391 INFO L124 PetriNetUnfolderBase]: 13172/21245 cut-off events. [2024-11-27 20:13:52,391 INFO L125 PetriNetUnfolderBase]: For 18763/18883 co-relation queries the response was YES. [2024-11-27 20:13:52,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56293 conditions, 21245 events. 13172/21245 cut-off events. For 18763/18883 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 151087 event pairs, 10838 based on Foata normal form. 352/16304 useless extension candidates. Maximal degree in co-relation 56267. Up to 16417 conditions per place. [2024-11-27 20:13:52,511 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 123 selfloop transitions, 7 changer transitions 7/157 dead transitions. [2024-11-27 20:13:52,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 157 transitions, 1189 flow [2024-11-27 20:13:52,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:13:52,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:13:52,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2024-11-27 20:13:52,514 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-11-27 20:13:52,514 INFO L175 Difference]: Start difference. First operand has 103 places, 112 transitions, 633 flow. Second operand 4 states and 191 transitions. [2024-11-27 20:13:52,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 157 transitions, 1189 flow [2024-11-27 20:13:52,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 157 transitions, 1157 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:13:52,539 INFO L231 Difference]: Finished difference. Result has 104 places, 112 transitions, 624 flow [2024-11-27 20:13:52,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=624, PETRI_PLACES=104, PETRI_TRANSITIONS=112} [2024-11-27 20:13:52,540 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 19 predicate places. [2024-11-27 20:13:52,541 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 112 transitions, 624 flow [2024-11-27 20:13:52,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 20:13:52,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:52,541 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2024-11-27 20:13:52,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:13:52,541 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:13:52,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:52,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1150202676, now seen corresponding path program 1 times [2024-11-27 20:13:52,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:52,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804322729] [2024-11-27 20:13:52,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:52,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:13:52,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:52,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804322729] [2024-11-27 20:13:52,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804322729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:13:52,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17748250] [2024-11-27 20:13:52,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:52,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:13:52,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:13:52,748 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:13:52,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:13:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:52,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 20:13:52,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:13:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:13:52,952 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:13:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:13:53,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17748250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:13:53,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:13:53,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-27 20:13:53,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860680644] [2024-11-27 20:13:53,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:13:53,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 20:13:53,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:53,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 20:13:53,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:13:53,291 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 92 [2024-11-27 20:13:53,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 112 transitions, 624 flow. Second operand has 24 states, 24 states have (on average 22.083333333333332) internal successors, (530), 24 states have internal predecessors, (530), 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 20:13:53,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:53,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 92 [2024-11-27 20:13:53,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:55,500 INFO L124 PetriNetUnfolderBase]: 13214/21543 cut-off events. [2024-11-27 20:13:55,501 INFO L125 PetriNetUnfolderBase]: For 20102/20270 co-relation queries the response was YES. [2024-11-27 20:13:55,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59281 conditions, 21543 events. 13214/21543 cut-off events. For 20102/20270 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 155729 event pairs, 10838 based on Foata normal form. 36/16155 useless extension candidates. Maximal degree in co-relation 59255. Up to 18830 conditions per place. [2024-11-27 20:13:55,619 INFO L140 encePairwiseOnDemand]: 80/92 looper letters, 57 selfloop transitions, 91 changer transitions 0/166 dead transitions. [2024-11-27 20:13:55,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 166 transitions, 1328 flow [2024-11-27 20:13:55,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-27 20:13:55,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-27 20:13:55,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 615 transitions. [2024-11-27 20:13:55,622 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3038537549407115 [2024-11-27 20:13:55,622 INFO L175 Difference]: Start difference. First operand has 104 places, 112 transitions, 624 flow. Second operand 22 states and 615 transitions. [2024-11-27 20:13:55,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 166 transitions, 1328 flow [2024-11-27 20:13:55,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 166 transitions, 1289 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-27 20:13:55,650 INFO L231 Difference]: Finished difference. Result has 129 places, 166 transitions, 1249 flow [2024-11-27 20:13:55,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1249, PETRI_PLACES=129, PETRI_TRANSITIONS=166} [2024-11-27 20:13:55,651 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 44 predicate places. [2024-11-27 20:13:55,651 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 166 transitions, 1249 flow [2024-11-27 20:13:55,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 22.083333333333332) internal successors, (530), 24 states have internal predecessors, (530), 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 20:13:55,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:55,652 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 20:13:55,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:13:55,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 20:13:55,856 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:13:55,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:55,857 INFO L85 PathProgramCache]: Analyzing trace with hash -728067188, now seen corresponding path program 1 times [2024-11-27 20:13:55,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:55,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170504468] [2024-11-27 20:13:55,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:55,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:13:55,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:55,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170504468] [2024-11-27 20:13:55,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170504468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:13:55,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084993856] [2024-11-27 20:13:55,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:55,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:13:55,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:13:56,001 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:13:56,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:13:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:56,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:13:56,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:13:56,149 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 20:13:56,149 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:13:56,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084993856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:56,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:13:56,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-27 20:13:56,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892801618] [2024-11-27 20:13:56,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:56,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:13:56,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:56,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:13:56,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:13:56,151 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-27 20:13:56,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 166 transitions, 1249 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:56,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:56,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-27 20:13:56,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:13:58,205 INFO L124 PetriNetUnfolderBase]: 12093/19870 cut-off events. [2024-11-27 20:13:58,205 INFO L125 PetriNetUnfolderBase]: For 19285/19453 co-relation queries the response was YES. [2024-11-27 20:13:58,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54929 conditions, 19870 events. 12093/19870 cut-off events. For 19285/19453 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 141403 event pairs, 9855 based on Foata normal form. 0/15185 useless extension candidates. Maximal degree in co-relation 54897. Up to 17417 conditions per place. [2024-11-27 20:13:58,353 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 143 selfloop transitions, 1 changer transitions 0/164 dead transitions. [2024-11-27 20:13:58,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 164 transitions, 1529 flow [2024-11-27 20:13:58,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:13:58,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:13:58,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-27 20:13:58,354 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47101449275362317 [2024-11-27 20:13:58,354 INFO L175 Difference]: Start difference. First operand has 129 places, 166 transitions, 1249 flow. Second operand 3 states and 130 transitions. [2024-11-27 20:13:58,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 164 transitions, 1529 flow [2024-11-27 20:13:58,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 164 transitions, 1297 flow, removed 67 selfloop flow, removed 9 redundant places. [2024-11-27 20:13:58,384 INFO L231 Difference]: Finished difference. Result has 120 places, 164 transitions, 1011 flow [2024-11-27 20:13:58,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1011, PETRI_PLACES=120, PETRI_TRANSITIONS=164} [2024-11-27 20:13:58,385 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 35 predicate places. [2024-11-27 20:13:58,385 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 164 transitions, 1011 flow [2024-11-27 20:13:58,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:13:58,385 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:13:58,385 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 20:13:58,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:13:58,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 20:13:58,586 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:13:58,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:58,586 INFO L85 PathProgramCache]: Analyzing trace with hash -728067187, now seen corresponding path program 1 times [2024-11-27 20:13:58,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:58,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924879819] [2024-11-27 20:13:58,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:58,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:58,831 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 20:13:58,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:58,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924879819] [2024-11-27 20:13:58,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924879819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:58,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:58,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:13:58,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328238105] [2024-11-27 20:13:58,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:58,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:13:58,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:58,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:13:58,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:13:58,839 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 92 [2024-11-27 20:13:58,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 164 transitions, 1011 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 20:13:58,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:13:58,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 92 [2024-11-27 20:13:58,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:14:01,437 INFO L124 PetriNetUnfolderBase]: 17262/27781 cut-off events. [2024-11-27 20:14:01,437 INFO L125 PetriNetUnfolderBase]: For 20811/20811 co-relation queries the response was YES. [2024-11-27 20:14:01,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75311 conditions, 27781 events. 17262/27781 cut-off events. For 20811/20811 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 195231 event pairs, 6430 based on Foata normal form. 438/22020 useless extension candidates. Maximal degree in co-relation 75279. Up to 10270 conditions per place. [2024-11-27 20:14:01,610 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 210 selfloop transitions, 6 changer transitions 0/233 dead transitions. [2024-11-27 20:14:01,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 233 transitions, 1720 flow [2024-11-27 20:14:01,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:14:01,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:14:01,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 238 transitions. [2024-11-27 20:14:01,612 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5173913043478261 [2024-11-27 20:14:01,612 INFO L175 Difference]: Start difference. First operand has 120 places, 164 transitions, 1011 flow. Second operand 5 states and 238 transitions. [2024-11-27 20:14:01,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 233 transitions, 1720 flow [2024-11-27 20:14:01,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 233 transitions, 1719 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:14:01,692 INFO L231 Difference]: Finished difference. Result has 126 places, 169 transitions, 1057 flow [2024-11-27 20:14:01,692 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1057, PETRI_PLACES=126, PETRI_TRANSITIONS=169} [2024-11-27 20:14:01,693 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 41 predicate places. [2024-11-27 20:14:01,693 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 169 transitions, 1057 flow [2024-11-27 20:14:01,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 20:14:01,693 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:14:01,693 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:01,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:14:01,694 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:14:01,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:01,694 INFO L85 PathProgramCache]: Analyzing trace with hash -689133604, now seen corresponding path program 1 times [2024-11-27 20:14:01,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:01,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249295601] [2024-11-27 20:14:01,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:01,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:14:01,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:01,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249295601] [2024-11-27 20:14:01,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249295601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:14:01,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189244256] [2024-11-27 20:14:01,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:01,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:01,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:14:01,918 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:14:01,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:14:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:02,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:14:02,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:14:02,085 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 20:14:02,085 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:14:02,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189244256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:02,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:14:02,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-27 20:14:02,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928334274] [2024-11-27 20:14:02,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:02,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:02,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:02,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:02,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:14:02,087 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-27 20:14:02,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 169 transitions, 1057 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:02,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:14:02,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-27 20:14:02,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:14:03,738 INFO L124 PetriNetUnfolderBase]: 11366/18987 cut-off events. [2024-11-27 20:14:03,738 INFO L125 PetriNetUnfolderBase]: For 19101/19305 co-relation queries the response was YES. [2024-11-27 20:14:03,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53581 conditions, 18987 events. 11366/18987 cut-off events. For 19101/19305 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 135202 event pairs, 9320 based on Foata normal form. 36/15558 useless extension candidates. Maximal degree in co-relation 53545. Up to 16572 conditions per place. [2024-11-27 20:14:03,826 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 143 selfloop transitions, 1 changer transitions 0/167 dead transitions. [2024-11-27 20:14:03,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 167 transitions, 1337 flow [2024-11-27 20:14:03,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:03,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:14:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2024-11-27 20:14:03,828 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2024-11-27 20:14:03,828 INFO L175 Difference]: Start difference. First operand has 126 places, 169 transitions, 1057 flow. Second operand 3 states and 128 transitions. [2024-11-27 20:14:03,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 167 transitions, 1337 flow [2024-11-27 20:14:03,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 167 transitions, 1337 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 20:14:03,854 INFO L231 Difference]: Finished difference. Result has 126 places, 167 transitions, 1051 flow [2024-11-27 20:14:03,855 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1051, PETRI_PLACES=126, PETRI_TRANSITIONS=167} [2024-11-27 20:14:03,855 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 41 predicate places. [2024-11-27 20:14:03,855 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 167 transitions, 1051 flow [2024-11-27 20:14:03,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:03,855 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:14:03,856 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:03,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:14:04,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:14:04,056 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:14:04,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:04,057 INFO L85 PathProgramCache]: Analyzing trace with hash -689133607, now seen corresponding path program 1 times [2024-11-27 20:14:04,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:04,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866696403] [2024-11-27 20:14:04,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:04,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:04,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:14:04,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:04,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866696403] [2024-11-27 20:14:04,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866696403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:14:04,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37319208] [2024-11-27 20:14:04,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:04,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:04,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:14:04,534 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:14:04,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:14:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:04,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:14:04,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:14:04,754 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 20:14:04,754 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:14:04,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37319208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:04,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:14:04,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 11 [2024-11-27 20:14:04,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714047970] [2024-11-27 20:14:04,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:04,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:14:04,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:04,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:14:04,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:14:04,790 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 92 [2024-11-27 20:14:04,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 167 transitions, 1051 flow. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 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 20:14:04,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:14:04,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 92 [2024-11-27 20:14:04,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:14:07,263 INFO L124 PetriNetUnfolderBase]: 13464/22119 cut-off events. [2024-11-27 20:14:07,263 INFO L125 PetriNetUnfolderBase]: For 20566/20662 co-relation queries the response was YES. [2024-11-27 20:14:07,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61585 conditions, 22119 events. 13464/22119 cut-off events. For 20566/20662 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 156801 event pairs, 4056 based on Foata normal form. 42/18486 useless extension candidates. Maximal degree in co-relation 61547. Up to 12405 conditions per place. [2024-11-27 20:14:07,457 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 192 selfloop transitions, 8 changer transitions 0/222 dead transitions. [2024-11-27 20:14:07,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 222 transitions, 1667 flow [2024-11-27 20:14:07,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:14:07,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:14:07,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 230 transitions. [2024-11-27 20:14:07,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-27 20:14:07,459 INFO L175 Difference]: Start difference. First operand has 126 places, 167 transitions, 1051 flow. Second operand 5 states and 230 transitions. [2024-11-27 20:14:07,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 222 transitions, 1667 flow [2024-11-27 20:14:07,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 222 transitions, 1666 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:14:07,491 INFO L231 Difference]: Finished difference. Result has 131 places, 171 transitions, 1101 flow [2024-11-27 20:14:07,492 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1101, PETRI_PLACES=131, PETRI_TRANSITIONS=171} [2024-11-27 20:14:07,492 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 46 predicate places. [2024-11-27 20:14:07,492 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 171 transitions, 1101 flow [2024-11-27 20:14:07,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 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 20:14:07,493 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:14:07,493 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:07,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 20:14:07,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 20:14:07,693 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:14:07,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:07,694 INFO L85 PathProgramCache]: Analyzing trace with hash -689133606, now seen corresponding path program 1 times [2024-11-27 20:14:07,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:07,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625843311] [2024-11-27 20:14:07,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:07,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:08,399 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 20:14:08,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:08,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625843311] [2024-11-27 20:14:08,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625843311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:14:08,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935745313] [2024-11-27 20:14:08,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:08,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:08,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:14:08,402 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:14:08,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:14:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:08,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 20:14:08,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:14:08,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 20:14:08,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 20:14:08,854 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-27 20:14:08,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-27 20:14:08,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-27 20:14:09,328 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 20:14:09,328 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:14:10,330 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:14:10,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2024-11-27 20:14:10,380 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-27 20:14:10,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 68 [2024-11-27 20:14:10,400 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-27 20:14:10,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 26 [2024-11-27 20:14:10,631 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 20:14:10,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935745313] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:14:10,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:14:10,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2024-11-27 20:14:10,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712565991] [2024-11-27 20:14:10,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:14:10,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 20:14:10,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:10,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 20:14:10,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=440, Unknown=2, NotChecked=0, Total=552 [2024-11-27 20:14:11,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 92 [2024-11-27 20:14:11,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 171 transitions, 1101 flow. Second operand has 24 states, 24 states have (on average 14.333333333333334) internal successors, (344), 24 states have internal predecessors, (344), 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 20:14:11,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:14:11,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 92 [2024-11-27 20:14:11,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:14:15,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:14:21,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 20:14:35,067 INFO L124 PetriNetUnfolderBase]: 46182/71571 cut-off events. [2024-11-27 20:14:35,067 INFO L125 PetriNetUnfolderBase]: For 84187/84361 co-relation queries the response was YES. [2024-11-27 20:14:35,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208830 conditions, 71571 events. 46182/71571 cut-off events. For 84187/84361 co-relation queries the response was YES. Maximal size of possible extension queue 1816. Compared 544384 event pairs, 11013 based on Foata normal form. 1121/61456 useless extension candidates. Maximal degree in co-relation 208789. Up to 13442 conditions per place. [2024-11-27 20:14:35,647 INFO L140 encePairwiseOnDemand]: 72/92 looper letters, 500 selfloop transitions, 220 changer transitions 41/773 dead transitions. [2024-11-27 20:14:35,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 773 transitions, 5767 flow [2024-11-27 20:14:35,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-27 20:14:35,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-27 20:14:35,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 984 transitions. [2024-11-27 20:14:35,653 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27424749163879597 [2024-11-27 20:14:35,653 INFO L175 Difference]: Start difference. First operand has 131 places, 171 transitions, 1101 flow. Second operand 39 states and 984 transitions. [2024-11-27 20:14:35,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 773 transitions, 5767 flow [2024-11-27 20:14:35,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 773 transitions, 5745 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-27 20:14:35,927 INFO L231 Difference]: Finished difference. Result has 182 places, 351 transitions, 3265 flow [2024-11-27 20:14:35,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3265, PETRI_PLACES=182, PETRI_TRANSITIONS=351} [2024-11-27 20:14:35,928 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 97 predicate places. [2024-11-27 20:14:35,928 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 351 transitions, 3265 flow [2024-11-27 20:14:35,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.333333333333334) internal successors, (344), 24 states have internal predecessors, (344), 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 20:14:35,929 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:14:35,929 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:35,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 20:14:36,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:36,132 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:14:36,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:36,133 INFO L85 PathProgramCache]: Analyzing trace with hash 509214582, now seen corresponding path program 1 times [2024-11-27 20:14:36,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:36,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323683993] [2024-11-27 20:14:36,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:36,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:14:36,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:36,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323683993] [2024-11-27 20:14:36,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323683993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:36,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:36,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:14:36,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957672447] [2024-11-27 20:14:36,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:36,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:36,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:36,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:36,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:36,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-27 20:14:36,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 351 transitions, 3265 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:36,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:14:36,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-27 20:14:36,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:14:42,984 INFO L124 PetriNetUnfolderBase]: 24370/41488 cut-off events. [2024-11-27 20:14:42,984 INFO L125 PetriNetUnfolderBase]: For 150226/150797 co-relation queries the response was YES. [2024-11-27 20:14:43,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149208 conditions, 41488 events. 24370/41488 cut-off events. For 150226/150797 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 347485 event pairs, 10052 based on Foata normal form. 110/36820 useless extension candidates. Maximal degree in co-relation 149152. Up to 35025 conditions per place. [2024-11-27 20:14:43,654 INFO L140 encePairwiseOnDemand]: 90/92 looper letters, 324 selfloop transitions, 1 changer transitions 0/354 dead transitions. [2024-11-27 20:14:43,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 354 transitions, 3884 flow [2024-11-27 20:14:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:43,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:14:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2024-11-27 20:14:43,655 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48188405797101447 [2024-11-27 20:14:43,655 INFO L175 Difference]: Start difference. First operand has 182 places, 351 transitions, 3265 flow. Second operand 3 states and 133 transitions. [2024-11-27 20:14:43,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 354 transitions, 3884 flow [2024-11-27 20:14:44,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 354 transitions, 3843 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-11-27 20:14:44,612 INFO L231 Difference]: Finished difference. Result has 181 places, 347 transitions, 3178 flow [2024-11-27 20:14:44,613 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=3176, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3178, PETRI_PLACES=181, PETRI_TRANSITIONS=347} [2024-11-27 20:14:44,613 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 96 predicate places. [2024-11-27 20:14:44,613 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 347 transitions, 3178 flow [2024-11-27 20:14:44,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:44,613 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:14:44,614 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:44,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 20:14:44,614 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:14:44,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:44,614 INFO L85 PathProgramCache]: Analyzing trace with hash -545787641, now seen corresponding path program 1 times [2024-11-27 20:14:44,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:44,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418752701] [2024-11-27 20:14:44,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:44,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:44,746 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 20:14:44,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:44,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418752701] [2024-11-27 20:14:44,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418752701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:44,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:44,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:14:44,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436889471] [2024-11-27 20:14:44,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:44,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:14:44,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:44,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:14:44,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:14:44,772 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 92 [2024-11-27 20:14:44,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 347 transitions, 3178 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 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 20:14:44,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:14:44,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 92 [2024-11-27 20:14:44,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:14:55,332 INFO L124 PetriNetUnfolderBase]: 39364/61234 cut-off events. [2024-11-27 20:14:55,332 INFO L125 PetriNetUnfolderBase]: For 171515/171803 co-relation queries the response was YES. [2024-11-27 20:14:55,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212354 conditions, 61234 events. 39364/61234 cut-off events. For 171515/171803 co-relation queries the response was YES. Maximal size of possible extension queue 1895. Compared 483676 event pairs, 17265 based on Foata normal form. 1388/53743 useless extension candidates. Maximal degree in co-relation 212298. Up to 41595 conditions per place. [2024-11-27 20:14:55,915 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 400 selfloop transitions, 8 changer transitions 0/433 dead transitions. [2024-11-27 20:14:55,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 433 transitions, 4758 flow [2024-11-27 20:14:55,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:14:55,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:14:55,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-11-27 20:14:55,916 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-11-27 20:14:55,916 INFO L175 Difference]: Start difference. First operand has 181 places, 347 transitions, 3178 flow. Second operand 4 states and 186 transitions. [2024-11-27 20:14:55,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 433 transitions, 4758 flow [2024-11-27 20:14:57,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 433 transitions, 4756 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:14:57,379 INFO L231 Difference]: Finished difference. Result has 185 places, 349 transitions, 3231 flow [2024-11-27 20:14:57,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=3177, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3231, PETRI_PLACES=185, PETRI_TRANSITIONS=349} [2024-11-27 20:14:57,380 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 100 predicate places. [2024-11-27 20:14:57,380 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 349 transitions, 3231 flow [2024-11-27 20:14:57,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 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 20:14:57,380 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:14:57,380 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:57,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 20:14:57,380 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:14:57,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:57,381 INFO L85 PathProgramCache]: Analyzing trace with hash 509214583, now seen corresponding path program 1 times [2024-11-27 20:14:57,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:57,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857274191] [2024-11-27 20:14:57,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:57,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:57,442 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:14:57,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:57,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857274191] [2024-11-27 20:14:57,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857274191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:14:57,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518466610] [2024-11-27 20:14:57,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:57,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:57,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:14:57,444 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:14:57,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:14:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:57,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:14:57,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:14:57,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:14:57,759 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:14:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:14:58,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518466610] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:14:58,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:14:58,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 15 [2024-11-27 20:14:58,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974009983] [2024-11-27 20:14:58,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:14:58,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:14:58,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:58,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:14:58,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:14:58,217 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 92 [2024-11-27 20:14:58,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 349 transitions, 3231 flow. Second operand has 15 states, 15 states have (on average 23.4) internal successors, (351), 15 states have internal predecessors, (351), 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 20:14:58,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:14:58,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 92 [2024-11-27 20:14:58,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:08,076 INFO L124 PetriNetUnfolderBase]: 29425/49402 cut-off events. [2024-11-27 20:15:08,076 INFO L125 PetriNetUnfolderBase]: For 240000/240977 co-relation queries the response was YES. [2024-11-27 20:15:08,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185160 conditions, 49402 events. 29425/49402 cut-off events. For 240000/240977 co-relation queries the response was YES. Maximal size of possible extension queue 1480. Compared 414717 event pairs, 13272 based on Foata normal form. 700/45356 useless extension candidates. Maximal degree in co-relation 185102. Up to 19808 conditions per place. [2024-11-27 20:15:08,533 INFO L140 encePairwiseOnDemand]: 78/92 looper letters, 396 selfloop transitions, 91 changer transitions 0/513 dead transitions. [2024-11-27 20:15:08,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 513 transitions, 5184 flow [2024-11-27 20:15:08,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:15:08,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-27 20:15:08,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 567 transitions. [2024-11-27 20:15:08,536 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3625319693094629 [2024-11-27 20:15:08,536 INFO L175 Difference]: Start difference. First operand has 185 places, 349 transitions, 3231 flow. Second operand 17 states and 567 transitions. [2024-11-27 20:15:08,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 513 transitions, 5184 flow [2024-11-27 20:15:09,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 513 transitions, 5146 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-27 20:15:09,299 INFO L231 Difference]: Finished difference. Result has 199 places, 344 transitions, 3370 flow [2024-11-27 20:15:09,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=3102, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3370, PETRI_PLACES=199, PETRI_TRANSITIONS=344} [2024-11-27 20:15:09,299 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 114 predicate places. [2024-11-27 20:15:09,299 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 344 transitions, 3370 flow [2024-11-27 20:15:09,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 23.4) internal successors, (351), 15 states have internal predecessors, (351), 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 20:15:09,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:09,300 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:09,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-27 20:15:09,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-27 20:15:09,500 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-27 20:15:09,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:09,501 INFO L85 PathProgramCache]: Analyzing trace with hash 260453450, now seen corresponding path program 1 times [2024-11-27 20:15:09,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:09,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978528660] [2024-11-27 20:15:09,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:09,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:15:10,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:10,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978528660] [2024-11-27 20:15:10,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978528660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:10,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601459707] [2024-11-27 20:15:10,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:10,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:10,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:10,117 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:10,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4331c261-32b0-4863-9d66-5f28c658e7b0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:15:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:10,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 20:15:10,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:10,403 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 20:15:10,403 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:10,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601459707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:10,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:15:10,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2024-11-27 20:15:10,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759067110] [2024-11-27 20:15:10,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:10,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:15:10,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:10,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:15:10,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:15:10,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 92 [2024-11-27 20:15:10,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 344 transitions, 3370 flow. Second operand has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 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 20:15:10,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:10,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 92 [2024-11-27 20:15:10,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand