./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd --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 d2a575889db2e07e0d6a3fd2f8635ba39d2afc2713d706bcd4d4aaa862bed792 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:46:16,324 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:46:16,416 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 13:46:16,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:46:16,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:46:16,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:46:16,451 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:46:16,452 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:46:16,452 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:46:16,452 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:46:16,452 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:46:16,453 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:46:16,453 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:46:16,453 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:46:16,454 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:46:16,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:46:16,454 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:46:16,454 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:46:16,454 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:46:16,455 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:46:16,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:46:16,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:46:16,455 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:46:16,455 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:46:16,456 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:46:16,456 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 13:46:16,456 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:46:16,456 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:46:16,456 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:46:16,456 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:46:16,457 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:46:16,457 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:46:16,457 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:46:16,457 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:46:16,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:46:16,458 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:46:16,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:46:16,458 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:46:16,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:46:16,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:46:16,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:46:16,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:46:16,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:46:16,459 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:46:16,459 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_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd 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 -> d2a575889db2e07e0d6a3fd2f8635ba39d2afc2713d706bcd4d4aaa862bed792 [2024-11-13 13:46:16,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:46:16,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:46:16,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:46:16,839 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:46:16,839 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:46:16,841 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c Unable to find full path for "g++" [2024-11-13 13:46:19,012 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:46:19,496 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:46:19,499 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c [2024-11-13 13:46:19,518 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/data/3ae45ca5d/0739c8a2b5e745f0bcc0e40575ebc864/FLAGef21765a7 [2024-11-13 13:46:19,659 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/data/3ae45ca5d/0739c8a2b5e745f0bcc0e40575ebc864 [2024-11-13 13:46:19,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:46:19,667 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:46:19,669 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:46:19,669 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:46:19,675 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:46:19,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:46:19" (1/1) ... [2024-11-13 13:46:19,678 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b68aae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:19, skipping insertion in model container [2024-11-13 13:46:19,681 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:46:19" (1/1) ... [2024-11-13 13:46:19,718 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:46:20,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:46:20,031 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:46:20,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:46:20,105 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:46:20,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:20 WrapperNode [2024-11-13 13:46:20,106 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:46:20,107 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:46:20,107 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:46:20,107 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:46:20,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:20" (1/1) ... [2024-11-13 13:46:20,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:20" (1/1) ... [2024-11-13 13:46:20,171 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 148 [2024-11-13 13:46:20,171 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:46:20,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:46:20,174 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:46:20,174 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:46:20,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:20" (1/1) ... [2024-11-13 13:46:20,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:20" (1/1) ... [2024-11-13 13:46:20,187 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:20" (1/1) ... [2024-11-13 13:46:20,204 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 13:46:20,205 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:20" (1/1) ... [2024-11-13 13:46:20,205 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:20" (1/1) ... [2024-11-13 13:46:20,213 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:20" (1/1) ... [2024-11-13 13:46:20,224 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:20" (1/1) ... [2024-11-13 13:46:20,232 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:20" (1/1) ... [2024-11-13 13:46:20,233 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:20" (1/1) ... [2024-11-13 13:46:20,239 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:46:20,240 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:46:20,240 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:46:20,240 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:46:20,241 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:20" (1/1) ... [2024-11-13 13:46:20,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:46:20,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:46:20,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:46:20,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:46:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:46:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 13:46:20,321 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 13:46:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 13:46:20,321 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 13:46:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:46:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:46:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:46:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 13:46:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 13:46:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 13:46:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 13:46:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:46:20,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:46:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:46:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 13:46:20,325 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 13:46:20,464 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:46:20,466 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:46:20,952 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:46:20,957 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:46:21,353 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:46:21,357 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 13:46:21,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:46:21 BoogieIcfgContainer [2024-11-13 13:46:21,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:46:21,363 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:46:21,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:46:21,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:46:21,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:46:19" (1/3) ... [2024-11-13 13:46:21,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753267dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:46:21, skipping insertion in model container [2024-11-13 13:46:21,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:46:20" (2/3) ... [2024-11-13 13:46:21,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753267dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:46:21, skipping insertion in model container [2024-11-13 13:46:21,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:46:21" (3/3) ... [2024-11-13 13:46:21,373 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2024-11-13 13:46:21,393 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:46:21,395 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-send-receive-alt.wvr.c that has 3 procedures, 37 locations, 1 initial locations, 3 loop locations, and 10 error locations. [2024-11-13 13:46:21,395 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:46:21,506 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 13:46:21,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 42 transitions, 98 flow [2024-11-13 13:46:21,616 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-11-13 13:46:21,619 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 13:46:21,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 40 events. 6/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 95 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-13 13:46:21,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 42 transitions, 98 flow [2024-11-13 13:46:21,632 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 85 flow [2024-11-13 13:46:21,647 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:46:21,664 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;@118a2808, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:46:21,664 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-13 13:46:21,669 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:46:21,669 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-13 13:46:21,669 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:46:21,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:21,670 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:46:21,671 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:46:21,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:21,676 INFO L85 PathProgramCache]: Analyzing trace with hash 478048, now seen corresponding path program 1 times [2024-11-13 13:46:21,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:21,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564135642] [2024-11-13 13:46:21,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:21,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:22,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:22,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:22,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564135642] [2024-11-13 13:46:22,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564135642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:22,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:22,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:46:22,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907907563] [2024-11-13 13:46:22,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:22,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:46:22,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:22,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:46:22,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:46:22,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:46:22,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2024-11-13 13:46:22,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:22,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:46:22,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:22,553 INFO L124 PetriNetUnfolderBase]: 346/618 cut-off events. [2024-11-13 13:46:22,553 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-13 13:46:22,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 618 events. 346/618 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2803 event pairs, 283 based on Foata normal form. 1/407 useless extension candidates. Maximal degree in co-relation 1131. Up to 560 conditions per place. [2024-11-13 13:46:22,565 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 29 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2024-11-13 13:46:22,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 151 flow [2024-11-13 13:46:22,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:46:22,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:46:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-11-13 13:46:22,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-11-13 13:46:22,582 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 85 flow. Second operand 4 states and 66 transitions. [2024-11-13 13:46:22,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 151 flow [2024-11-13 13:46:22,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 146 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 13:46:22,592 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 103 flow [2024-11-13 13:46:22,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2024-11-13 13:46:22,599 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2024-11-13 13:46:22,599 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 103 flow [2024-11-13 13:46:22,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2024-11-13 13:46:22,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:22,600 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-13 13:46:22,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:46:22,600 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:46:22,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:22,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1357093557, now seen corresponding path program 1 times [2024-11-13 13:46:22,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:22,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567957906] [2024-11-13 13:46:22,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:22,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:22,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:22,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:22,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567957906] [2024-11-13 13:46:22,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567957906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:46:22,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519488834] [2024-11-13 13:46:22,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:22,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:22,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:46:22,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:46:22,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:46:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:22,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:46:22,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:46:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:23,062 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:46:23,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519488834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:23,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:46:23,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-13 13:46:23,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984046908] [2024-11-13 13:46:23,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:23,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:46:23,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:23,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:46:23,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:46:23,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:46:23,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 103 flow. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2024-11-13 13:46:23,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:23,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:46:23,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:23,417 INFO L124 PetriNetUnfolderBase]: 346/617 cut-off events. [2024-11-13 13:46:23,417 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-13 13:46:23,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1212 conditions, 617 events. 346/617 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2812 event pairs, 283 based on Foata normal form. 1/407 useless extension candidates. Maximal degree in co-relation 1185. Up to 555 conditions per place. [2024-11-13 13:46:23,429 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 25 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2024-11-13 13:46:23,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 163 flow [2024-11-13 13:46:23,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:46:23,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:46:23,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-11-13 13:46:23,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2976190476190476 [2024-11-13 13:46:23,433 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 103 flow. Second operand 6 states and 75 transitions. [2024-11-13 13:46:23,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 163 flow [2024-11-13 13:46:23,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:46:23,437 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 110 flow [2024-11-13 13:46:23,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=110, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-11-13 13:46:23,438 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2024-11-13 13:46:23,439 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 110 flow [2024-11-13 13:46:23,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2024-11-13 13:46:23,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:23,439 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-13 13:46:23,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 13:46:23,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:23,640 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:46:23,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:23,641 INFO L85 PathProgramCache]: Analyzing trace with hash -879772222, now seen corresponding path program 1 times [2024-11-13 13:46:23,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:23,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508314026] [2024-11-13 13:46:23,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:23,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:23,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:23,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508314026] [2024-11-13 13:46:23,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508314026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:46:23,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764924287] [2024-11-13 13:46:23,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:23,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:23,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:46:23,826 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:46:23,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:46:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:23,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:46:23,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:46:23,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:23,970 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:46:24,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:24,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764924287] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:46:24,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:46:24,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-13 13:46:24,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915928573] [2024-11-13 13:46:24,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:46:24,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 13:46:24,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:24,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 13:46:24,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:46:24,079 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:46:24,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 110 flow. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 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) [2024-11-13 13:46:24,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:24,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:46:24,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:24,452 INFO L124 PetriNetUnfolderBase]: 349/629 cut-off events. [2024-11-13 13:46:24,452 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-13 13:46:24,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 629 events. 349/629 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2924 event pairs, 283 based on Foata normal form. 3/419 useless extension candidates. Maximal degree in co-relation 1186. Up to 562 conditions per place. [2024-11-13 13:46:24,457 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 28 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2024-11-13 13:46:24,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 246 flow [2024-11-13 13:46:24,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:46:24,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 13:46:24,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-11-13 13:46:24,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2714285714285714 [2024-11-13 13:46:24,464 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 110 flow. Second operand 10 states and 114 transitions. [2024-11-13 13:46:24,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 246 flow [2024-11-13 13:46:24,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 200 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-13 13:46:24,469 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 162 flow [2024-11-13 13:46:24,469 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=162, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-11-13 13:46:24,470 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 11 predicate places. [2024-11-13 13:46:24,470 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 162 flow [2024-11-13 13:46:24,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 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) [2024-11-13 13:46:24,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:24,470 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:24,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 13:46:24,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:24,675 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:46:24,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:24,676 INFO L85 PathProgramCache]: Analyzing trace with hash -803572649, now seen corresponding path program 1 times [2024-11-13 13:46:24,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:24,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294356657] [2024-11-13 13:46:24,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:24,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:24,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:24,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294356657] [2024-11-13 13:46:24,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294356657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:24,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:24,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:46:24,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898387027] [2024-11-13 13:46:24,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:24,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:46:24,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:24,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:46:24,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:46:24,794 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-11-13 13:46:24,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-11-13 13:46:24,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:24,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-11-13 13:46:24,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:25,039 INFO L124 PetriNetUnfolderBase]: 436/798 cut-off events. [2024-11-13 13:46:25,039 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-13 13:46:25,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1587 conditions, 798 events. 436/798 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3828 event pairs, 202 based on Foata normal form. 22/554 useless extension candidates. Maximal degree in co-relation 1553. Up to 465 conditions per place. [2024-11-13 13:46:25,045 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 51 selfloop transitions, 3 changer transitions 2/62 dead transitions. [2024-11-13 13:46:25,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 62 transitions, 307 flow [2024-11-13 13:46:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:46:25,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:46:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-11-13 13:46:25,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-11-13 13:46:25,047 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 162 flow. Second operand 3 states and 75 transitions. [2024-11-13 13:46:25,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 62 transitions, 307 flow [2024-11-13 13:46:25,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 62 transitions, 296 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-13 13:46:25,051 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 176 flow [2024-11-13 13:46:25,052 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-11-13 13:46:25,052 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2024-11-13 13:46:25,053 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 176 flow [2024-11-13 13:46:25,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-11-13 13:46:25,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:25,053 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:25,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:46:25,054 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:46:25,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:25,054 INFO L85 PathProgramCache]: Analyzing trace with hash -968413819, now seen corresponding path program 1 times [2024-11-13 13:46:25,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:25,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253549844] [2024-11-13 13:46:25,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:25,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:25,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:25,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253549844] [2024-11-13 13:46:25,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253549844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:25,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:25,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:46:25,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238624334] [2024-11-13 13:46:25,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:25,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:46:25,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:25,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:46:25,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:46:25,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-11-13 13:46:25,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-13 13:46:25,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:25,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-11-13 13:46:25,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:25,325 INFO L124 PetriNetUnfolderBase]: 352/656 cut-off events. [2024-11-13 13:46:25,326 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-11-13 13:46:25,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1437 conditions, 656 events. 352/656 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2971 event pairs, 116 based on Foata normal form. 0/529 useless extension candidates. Maximal degree in co-relation 1402. Up to 445 conditions per place. [2024-11-13 13:46:25,331 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 47 selfloop transitions, 1 changer transitions 2/56 dead transitions. [2024-11-13 13:46:25,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 56 transitions, 293 flow [2024-11-13 13:46:25,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:46:25,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:46:25,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-11-13 13:46:25,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-11-13 13:46:25,333 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 176 flow. Second operand 3 states and 65 transitions. [2024-11-13 13:46:25,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 56 transitions, 293 flow [2024-11-13 13:46:25,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 56 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:46:25,336 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 176 flow [2024-11-13 13:46:25,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2024-11-13 13:46:25,336 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2024-11-13 13:46:25,337 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 176 flow [2024-11-13 13:46:25,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-13 13:46:25,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:25,337 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:25,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:46:25,337 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:46:25,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:25,338 INFO L85 PathProgramCache]: Analyzing trace with hash -968413818, now seen corresponding path program 1 times [2024-11-13 13:46:25,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:25,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047386064] [2024-11-13 13:46:25,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:25,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:25,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:25,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:25,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047386064] [2024-11-13 13:46:25,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047386064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:25,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:25,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:46:25,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621005370] [2024-11-13 13:46:25,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:25,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:46:25,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:25,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:46:25,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:46:25,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-11-13 13:46:25,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-11-13 13:46:25,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:25,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-11-13 13:46:25,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:25,761 INFO L124 PetriNetUnfolderBase]: 419/787 cut-off events. [2024-11-13 13:46:25,762 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2024-11-13 13:46:25,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1731 conditions, 787 events. 419/787 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3594 event pairs, 352 based on Foata normal form. 11/689 useless extension candidates. Maximal degree in co-relation 1696. Up to 592 conditions per place. [2024-11-13 13:46:25,767 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 38 selfloop transitions, 2 changer transitions 14/60 dead transitions. [2024-11-13 13:46:25,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 314 flow [2024-11-13 13:46:25,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:46:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:46:25,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-13 13:46:25,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-11-13 13:46:25,771 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 176 flow. Second operand 4 states and 79 transitions. [2024-11-13 13:46:25,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 314 flow [2024-11-13 13:46:25,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:46:25,777 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 179 flow [2024-11-13 13:46:25,777 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-11-13 13:46:25,778 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2024-11-13 13:46:25,778 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 179 flow [2024-11-13 13:46:25,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-11-13 13:46:25,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:25,778 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:25,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:46:25,778 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:46:25,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:25,779 INFO L85 PathProgramCache]: Analyzing trace with hash 8905873, now seen corresponding path program 1 times [2024-11-13 13:46:25,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:25,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441586352] [2024-11-13 13:46:25,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:25,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:26,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:26,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441586352] [2024-11-13 13:46:26,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441586352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:46:26,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471353534] [2024-11-13 13:46:26,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:26,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:26,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:46:26,060 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:46:26,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:46:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:26,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:46:26,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:46:26,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:46:26,256 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:46:26,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471353534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:26,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:46:26,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-11-13 13:46:26,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142712640] [2024-11-13 13:46:26,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:26,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:46:26,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:26,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:46:26,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:46:26,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-11-13 13:46:26,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-11-13 13:46:26,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:26,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-11-13 13:46:26,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:26,424 INFO L124 PetriNetUnfolderBase]: 250/495 cut-off events. [2024-11-13 13:46:26,424 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-11-13 13:46:26,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1105 conditions, 495 events. 250/495 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2114 event pairs, 154 based on Foata normal form. 56/477 useless extension candidates. Maximal degree in co-relation 1081. Up to 355 conditions per place. [2024-11-13 13:46:26,431 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 33 selfloop transitions, 7 changer transitions 6/52 dead transitions. [2024-11-13 13:46:26,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 288 flow [2024-11-13 13:46:26,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:46:26,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:46:26,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-11-13 13:46:26,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-13 13:46:26,434 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 179 flow. Second operand 4 states and 72 transitions. [2024-11-13 13:46:26,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 288 flow [2024-11-13 13:46:26,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 282 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-13 13:46:26,440 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 172 flow [2024-11-13 13:46:26,440 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-11-13 13:46:26,441 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2024-11-13 13:46:26,441 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 172 flow [2024-11-13 13:46:26,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-11-13 13:46:26,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:26,442 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-13 13:46:26,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 13:46:26,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:26,642 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:46:26,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:26,643 INFO L85 PathProgramCache]: Analyzing trace with hash -678430025, now seen corresponding path program 2 times [2024-11-13 13:46:26,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:26,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819919082] [2024-11-13 13:46:26,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:26,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:26,917 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:26,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:26,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819919082] [2024-11-13 13:46:26,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819919082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:46:26,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508861995] [2024-11-13 13:46:26,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:46:26,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:26,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:46:26,920 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:46:26,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:46:27,014 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 13:46:27,014 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:46:27,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:46:27,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:46:27,108 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 13:46:27,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:46:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 13:46:27,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508861995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:46:27,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:46:27,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-13 13:46:27,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050216226] [2024-11-13 13:46:27,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:46:27,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 13:46:27,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:27,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 13:46:27,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:46:27,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:46:27,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 172 flow. Second operand has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 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) [2024-11-13 13:46:27,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:27,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:46:27,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:27,497 INFO L124 PetriNetUnfolderBase]: 160/312 cut-off events. [2024-11-13 13:46:27,497 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2024-11-13 13:46:27,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 312 events. 160/312 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1131 event pairs, 115 based on Foata normal form. 2/280 useless extension candidates. Maximal degree in co-relation 740. Up to 263 conditions per place. [2024-11-13 13:46:27,500 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 19 selfloop transitions, 18 changer transitions 0/42 dead transitions. [2024-11-13 13:46:27,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 42 transitions, 252 flow [2024-11-13 13:46:27,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:46:27,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 13:46:27,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 134 transitions. [2024-11-13 13:46:27,504 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.22789115646258504 [2024-11-13 13:46:27,504 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 172 flow. Second operand 14 states and 134 transitions. [2024-11-13 13:46:27,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 42 transitions, 252 flow [2024-11-13 13:46:27,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 42 transitions, 226 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-13 13:46:27,509 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 188 flow [2024-11-13 13:46:27,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=188, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2024-11-13 13:46:27,511 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2024-11-13 13:46:27,511 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 188 flow [2024-11-13 13:46:27,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 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) [2024-11-13 13:46:27,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:27,512 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:27,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:46:27,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:27,712 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:46:27,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:27,713 INFO L85 PathProgramCache]: Analyzing trace with hash 126783544, now seen corresponding path program 1 times [2024-11-13 13:46:27,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:27,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085058441] [2024-11-13 13:46:27,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:27,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:28,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:28,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:28,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085058441] [2024-11-13 13:46:28,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085058441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:46:28,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049818225] [2024-11-13 13:46:28,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:28,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:28,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:46:28,461 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:46:28,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:46:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:28,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 13:46:28,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:46:28,658 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 [2024-11-13 13:46:29,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:29,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:46:29,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-13 13:46:29,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-13 13:46:29,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:29,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049818225] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:46:29,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:46:29,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-13 13:46:29,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149238035] [2024-11-13 13:46:29,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:46:29,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 13:46:29,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:29,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 13:46:29,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:46:30,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:46:30,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 188 flow. Second operand has 17 states, 17 states have (on average 9.470588235294118) internal successors, (161), 17 states have internal predecessors, (161), 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) [2024-11-13 13:46:30,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:30,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:46:30,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:31,783 INFO L124 PetriNetUnfolderBase]: 597/1139 cut-off events. [2024-11-13 13:46:31,783 INFO L125 PetriNetUnfolderBase]: For 203/203 co-relation queries the response was YES. [2024-11-13 13:46:31,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2547 conditions, 1139 events. 597/1139 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5590 event pairs, 173 based on Foata normal form. 0/1010 useless extension candidates. Maximal degree in co-relation 1340. Up to 278 conditions per place. [2024-11-13 13:46:31,789 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 91 selfloop transitions, 31 changer transitions 4/131 dead transitions. [2024-11-13 13:46:31,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 131 transitions, 692 flow [2024-11-13 13:46:31,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 13:46:31,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-13 13:46:31,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 232 transitions. [2024-11-13 13:46:31,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34523809523809523 [2024-11-13 13:46:31,793 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 188 flow. Second operand 16 states and 232 transitions. [2024-11-13 13:46:31,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 131 transitions, 692 flow [2024-11-13 13:46:31,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 131 transitions, 624 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-11-13 13:46:31,797 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 326 flow [2024-11-13 13:46:31,797 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=326, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-11-13 13:46:31,798 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2024-11-13 13:46:31,799 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 326 flow [2024-11-13 13:46:31,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.470588235294118) internal successors, (161), 17 states have internal predecessors, (161), 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) [2024-11-13 13:46:31,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:31,800 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:31,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:46:32,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 13:46:32,004 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:46:32,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:32,004 INFO L85 PathProgramCache]: Analyzing trace with hash 126783543, now seen corresponding path program 1 times [2024-11-13 13:46:32,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:32,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080175785] [2024-11-13 13:46:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:32,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:32,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:32,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080175785] [2024-11-13 13:46:32,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080175785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:46:32,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194564583] [2024-11-13 13:46:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:32,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:32,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:46:32,636 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:46:32,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:46:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:32,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 13:46:32,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:46:32,798 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 [2024-11-13 13:46:33,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:33,283 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:46:33,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-13 13:46:33,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-11-13 13:46:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:33,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194564583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:46:33,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:46:33,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-13 13:46:33,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177542530] [2024-11-13 13:46:33,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:46:33,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 13:46:33,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:33,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 13:46:33,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:46:33,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:46:33,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 326 flow. Second operand has 17 states, 17 states have (on average 9.470588235294118) internal successors, (161), 17 states have internal predecessors, (161), 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) [2024-11-13 13:46:33,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:33,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:46:33,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:35,766 INFO L124 PetriNetUnfolderBase]: 519/1013 cut-off events. [2024-11-13 13:46:35,766 INFO L125 PetriNetUnfolderBase]: For 1478/1478 co-relation queries the response was YES. [2024-11-13 13:46:35,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2727 conditions, 1013 events. 519/1013 cut-off events. For 1478/1478 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4960 event pairs, 157 based on Foata normal form. 50/1010 useless extension candidates. Maximal degree in co-relation 2215. Up to 278 conditions per place. [2024-11-13 13:46:35,772 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 85 selfloop transitions, 31 changer transitions 4/125 dead transitions. [2024-11-13 13:46:35,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 125 transitions, 762 flow [2024-11-13 13:46:35,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 13:46:35,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-13 13:46:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 226 transitions. [2024-11-13 13:46:35,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33630952380952384 [2024-11-13 13:46:35,775 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 326 flow. Second operand 16 states and 226 transitions. [2024-11-13 13:46:35,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 125 transitions, 762 flow [2024-11-13 13:46:35,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 125 transitions, 712 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-11-13 13:46:35,786 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 332 flow [2024-11-13 13:46:35,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=332, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2024-11-13 13:46:35,786 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 34 predicate places. [2024-11-13 13:46:35,787 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 332 flow [2024-11-13 13:46:35,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.470588235294118) internal successors, (161), 17 states have internal predecessors, (161), 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) [2024-11-13 13:46:35,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:35,787 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:35,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:46:35,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 13:46:35,988 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:46:35,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:35,988 INFO L85 PathProgramCache]: Analyzing trace with hash 2129300503, now seen corresponding path program 2 times [2024-11-13 13:46:35,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:35,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920693372] [2024-11-13 13:46:35,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:35,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:37,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:37,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:37,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920693372] [2024-11-13 13:46:37,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920693372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:46:37,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020375539] [2024-11-13 13:46:37,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:46:37,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:37,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:46:37,480 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:46:37,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:46:37,573 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 13:46:37,573 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:46:37,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:46:37,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:46:37,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:46:37,717 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:46:37,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020375539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:37,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:46:37,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 12 [2024-11-13 13:46:37,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769443001] [2024-11-13 13:46:37,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:37,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:46:37,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:37,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:46:37,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:46:37,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-11-13 13:46:37,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-11-13 13:46:37,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:37,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-11-13 13:46:37,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:37,960 INFO L124 PetriNetUnfolderBase]: 689/1329 cut-off events. [2024-11-13 13:46:37,961 INFO L125 PetriNetUnfolderBase]: For 2250/2250 co-relation queries the response was YES. [2024-11-13 13:46:37,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3730 conditions, 1329 events. 689/1329 cut-off events. For 2250/2250 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7139 event pairs, 187 based on Foata normal form. 10/1272 useless extension candidates. Maximal degree in co-relation 3049. Up to 616 conditions per place. [2024-11-13 13:46:37,970 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 62 selfloop transitions, 8 changer transitions 2/77 dead transitions. [2024-11-13 13:46:37,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 77 transitions, 567 flow [2024-11-13 13:46:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:46:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:46:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-11-13 13:46:37,972 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-13 13:46:37,973 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 332 flow. Second operand 4 states and 77 transitions. [2024-11-13 13:46:37,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 77 transitions, 567 flow [2024-11-13 13:46:37,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 77 transitions, 504 flow, removed 4 selfloop flow, removed 15 redundant places. [2024-11-13 13:46:37,981 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 327 flow [2024-11-13 13:46:37,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=327, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2024-11-13 13:46:37,983 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 23 predicate places. [2024-11-13 13:46:37,983 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 327 flow [2024-11-13 13:46:37,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-11-13 13:46:37,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:37,983 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:38,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 13:46:38,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 13:46:38,184 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:46:38,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:38,185 INFO L85 PathProgramCache]: Analyzing trace with hash 2129300504, now seen corresponding path program 2 times [2024-11-13 13:46:38,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:38,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366565126] [2024-11-13 13:46:38,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:38,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:39,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:39,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366565126] [2024-11-13 13:46:39,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366565126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:46:39,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460200678] [2024-11-13 13:46:39,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:46:39,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:39,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:46:39,385 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:46:39,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:46:39,483 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 13:46:39,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:46:39,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:46:39,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:46:39,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:46:39,619 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:46:39,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460200678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:39,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:46:39,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 12 [2024-11-13 13:46:39,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937449598] [2024-11-13 13:46:39,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:39,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:46:39,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:39,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:46:39,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:46:39,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-11-13 13:46:39,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-11-13 13:46:39,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:39,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-11-13 13:46:39,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:39,873 INFO L124 PetriNetUnfolderBase]: 672/1302 cut-off events. [2024-11-13 13:46:39,874 INFO L125 PetriNetUnfolderBase]: For 1976/1976 co-relation queries the response was YES. [2024-11-13 13:46:39,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3581 conditions, 1302 events. 672/1302 cut-off events. For 1976/1976 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6972 event pairs, 179 based on Foata normal form. 10/1244 useless extension candidates. Maximal degree in co-relation 2700. Up to 616 conditions per place. [2024-11-13 13:46:39,883 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 61 selfloop transitions, 8 changer transitions 2/76 dead transitions. [2024-11-13 13:46:39,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 517 flow [2024-11-13 13:46:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:46:39,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:46:39,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-11-13 13:46:39,885 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-11-13 13:46:39,885 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 327 flow. Second operand 4 states and 76 transitions. [2024-11-13 13:46:39,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 517 flow [2024-11-13 13:46:39,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 76 transitions, 506 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:46:39,894 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 339 flow [2024-11-13 13:46:39,894 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=339, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2024-11-13 13:46:39,895 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2024-11-13 13:46:39,895 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 339 flow [2024-11-13 13:46:39,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-11-13 13:46:39,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:39,896 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:39,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 13:46:40,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 13:46:40,096 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:46:40,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:40,097 INFO L85 PathProgramCache]: Analyzing trace with hash 2129301558, now seen corresponding path program 1 times [2024-11-13 13:46:40,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:40,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247698419] [2024-11-13 13:46:40,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:40,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:46:40,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:40,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247698419] [2024-11-13 13:46:40,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247698419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:40,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:40,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:46:40,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174090973] [2024-11-13 13:46:40,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:40,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:46:40,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:40,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:46:40,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:46:40,206 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:46:40,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 339 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-13 13:46:40,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:40,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:46:40,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:40,417 INFO L124 PetriNetUnfolderBase]: 724/1284 cut-off events. [2024-11-13 13:46:40,417 INFO L125 PetriNetUnfolderBase]: For 1909/1909 co-relation queries the response was YES. [2024-11-13 13:46:40,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3686 conditions, 1284 events. 724/1284 cut-off events. For 1909/1909 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6166 event pairs, 385 based on Foata normal form. 18/1300 useless extension candidates. Maximal degree in co-relation 2524. Up to 958 conditions per place. [2024-11-13 13:46:40,426 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 64 selfloop transitions, 2 changer transitions 2/71 dead transitions. [2024-11-13 13:46:40,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 528 flow [2024-11-13 13:46:40,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:46:40,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:46:40,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-11-13 13:46:40,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-13 13:46:40,427 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 339 flow. Second operand 3 states and 56 transitions. [2024-11-13 13:46:40,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 528 flow [2024-11-13 13:46:40,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 71 transitions, 510 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 13:46:40,435 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 302 flow [2024-11-13 13:46:40,435 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-11-13 13:46:40,436 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2024-11-13 13:46:40,436 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 302 flow [2024-11-13 13:46:40,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-13 13:46:40,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:40,437 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:40,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 13:46:40,437 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:46:40,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:40,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1289431013, now seen corresponding path program 1 times [2024-11-13 13:46:40,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:40,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054507805] [2024-11-13 13:46:40,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:40,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:46:40,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:40,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054507805] [2024-11-13 13:46:40,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054507805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:40,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:40,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:46:40,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057422571] [2024-11-13 13:46:40,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:40,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:46:40,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:40,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:46:40,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:46:40,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-11-13 13:46:40,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-11-13 13:46:40,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:40,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-11-13 13:46:40,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:40,834 INFO L124 PetriNetUnfolderBase]: 962/1836 cut-off events. [2024-11-13 13:46:40,834 INFO L125 PetriNetUnfolderBase]: For 3040/3048 co-relation queries the response was YES. [2024-11-13 13:46:40,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5276 conditions, 1836 events. 962/1836 cut-off events. For 3040/3048 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 9931 event pairs, 285 based on Foata normal form. 52/1886 useless extension candidates. Maximal degree in co-relation 3333. Up to 690 conditions per place. [2024-11-13 13:46:40,846 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 65 selfloop transitions, 17 changer transitions 2/90 dead transitions. [2024-11-13 13:46:40,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 90 transitions, 652 flow [2024-11-13 13:46:40,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:46:40,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:46:40,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-11-13 13:46:40,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-11-13 13:46:40,848 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 302 flow. Second operand 4 states and 80 transitions. [2024-11-13 13:46:40,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 90 transitions, 652 flow [2024-11-13 13:46:40,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 90 transitions, 650 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:46:40,855 INFO L231 Difference]: Finished difference. Result has 68 places, 72 transitions, 505 flow [2024-11-13 13:46:40,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=505, PETRI_PLACES=68, PETRI_TRANSITIONS=72} [2024-11-13 13:46:40,856 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2024-11-13 13:46:40,856 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 72 transitions, 505 flow [2024-11-13 13:46:40,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-11-13 13:46:40,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:40,857 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:40,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 13:46:40,857 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:46:40,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:40,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1555046855, now seen corresponding path program 1 times [2024-11-13 13:46:40,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:40,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658568677] [2024-11-13 13:46:40,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:40,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:40,996 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 13:46:40,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:40,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658568677] [2024-11-13 13:46:40,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658568677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:40,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:46:40,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:46:40,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287355101] [2024-11-13 13:46:40,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:40,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:46:40,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:40,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:46:40,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:46:41,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-13 13:46:41,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 72 transitions, 505 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-11-13 13:46:41,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:41,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-13 13:46:41,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:41,490 INFO L124 PetriNetUnfolderBase]: 1806/3100 cut-off events. [2024-11-13 13:46:41,490 INFO L125 PetriNetUnfolderBase]: For 7028/7028 co-relation queries the response was YES. [2024-11-13 13:46:41,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9959 conditions, 3100 events. 1806/3100 cut-off events. For 7028/7028 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 16187 event pairs, 304 based on Foata normal form. 160/3258 useless extension candidates. Maximal degree in co-relation 6110. Up to 1526 conditions per place. [2024-11-13 13:46:41,517 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 93 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2024-11-13 13:46:41,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 99 transitions, 908 flow [2024-11-13 13:46:41,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:46:41,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:46:41,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-13 13:46:41,521 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-13 13:46:41,521 INFO L175 Difference]: Start difference. First operand has 68 places, 72 transitions, 505 flow. Second operand 4 states and 63 transitions. [2024-11-13 13:46:41,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 99 transitions, 908 flow [2024-11-13 13:46:41,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 99 transitions, 908 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:46:41,530 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 509 flow [2024-11-13 13:46:41,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=509, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2024-11-13 13:46:41,531 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 34 predicate places. [2024-11-13 13:46:41,531 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 509 flow [2024-11-13 13:46:41,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-11-13 13:46:41,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:41,532 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:41,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 13:46:41,532 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:46:41,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:41,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1555045801, now seen corresponding path program 1 times [2024-11-13 13:46:41,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:41,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942241951] [2024-11-13 13:46:41,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:41,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:42,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:42,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942241951] [2024-11-13 13:46:42,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942241951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:46:42,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385392416] [2024-11-13 13:46:42,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:42,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:42,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:46:42,749 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:46:42,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:46:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:42,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 13:46:42,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:46:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:43,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:46:44,126 INFO L349 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2024-11-13 13:46:44,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 46 [2024-11-13 13:46:45,345 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:45,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385392416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:46:45,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:46:45,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2024-11-13 13:46:45,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144370542] [2024-11-13 13:46:45,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:46:45,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 13:46:45,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:45,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 13:46:45,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2024-11-13 13:46:45,447 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:46:45,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 509 flow. Second operand has 32 states, 32 states have (on average 9.0625) internal successors, (290), 32 states have internal predecessors, (290), 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) [2024-11-13 13:46:45,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:45,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:46:45,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:46:51,034 INFO L124 PetriNetUnfolderBase]: 3651/6847 cut-off events. [2024-11-13 13:46:51,034 INFO L125 PetriNetUnfolderBase]: For 28316/28336 co-relation queries the response was YES. [2024-11-13 13:46:51,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24346 conditions, 6847 events. 3651/6847 cut-off events. For 28316/28336 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 45055 event pairs, 725 based on Foata normal form. 224/7069 useless extension candidates. Maximal degree in co-relation 16160. Up to 1529 conditions per place. [2024-11-13 13:46:51,094 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 236 selfloop transitions, 127 changer transitions 6/376 dead transitions. [2024-11-13 13:46:51,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 376 transitions, 3235 flow [2024-11-13 13:46:51,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-13 13:46:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-13 13:46:51,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 612 transitions. [2024-11-13 13:46:51,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3554006968641115 [2024-11-13 13:46:51,103 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 509 flow. Second operand 41 states and 612 transitions. [2024-11-13 13:46:51,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 376 transitions, 3235 flow [2024-11-13 13:46:51,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 376 transitions, 3228 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-13 13:46:51,139 INFO L231 Difference]: Finished difference. Result has 124 places, 198 transitions, 2428 flow [2024-11-13 13:46:51,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=2428, PETRI_PLACES=124, PETRI_TRANSITIONS=198} [2024-11-13 13:46:51,141 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 85 predicate places. [2024-11-13 13:46:51,141 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 198 transitions, 2428 flow [2024-11-13 13:46:51,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.0625) internal successors, (290), 32 states have internal predecessors, (290), 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) [2024-11-13 13:46:51,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:46:51,143 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:51,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 13:46:51,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 13:46:51,347 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:46:51,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:51,348 INFO L85 PathProgramCache]: Analyzing trace with hash 76151393, now seen corresponding path program 2 times [2024-11-13 13:46:51,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:51,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484580190] [2024-11-13 13:46:51,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:51,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:52,747 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:52,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:52,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484580190] [2024-11-13 13:46:52,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484580190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:46:52,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515219232] [2024-11-13 13:46:52,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:46:52,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:52,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:46:52,750 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:46:52,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:46:52,862 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:46:52,862 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:46:52,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 13:46:52,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:46:53,015 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 [2024-11-13 13:46:53,545 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:53,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:46:54,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 72 [2024-11-13 13:46:54,512 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:46:54,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 143 [2024-11-13 13:46:55,463 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:46:55,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515219232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:46:55,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:46:55,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2024-11-13 13:46:55,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702294037] [2024-11-13 13:46:55,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:46:55,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 13:46:55,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:55,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 13:46:55,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2024-11-13 13:46:55,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:46:55,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 198 transitions, 2428 flow. Second operand has 29 states, 29 states have (on average 9.275862068965518) internal successors, (269), 29 states have internal predecessors, (269), 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) [2024-11-13 13:46:55,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:46:55,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:46:55,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:00,030 INFO L124 PetriNetUnfolderBase]: 6324/11813 cut-off events. [2024-11-13 13:47:00,030 INFO L125 PetriNetUnfolderBase]: For 109736/109756 co-relation queries the response was YES. [2024-11-13 13:47:00,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48842 conditions, 11813 events. 6324/11813 cut-off events. For 109736/109756 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 85913 event pairs, 1706 based on Foata normal form. 232/12038 useless extension candidates. Maximal degree in co-relation 42550. Up to 4396 conditions per place. [2024-11-13 13:47:00,115 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 339 selfloop transitions, 193 changer transitions 14/553 dead transitions. [2024-11-13 13:47:00,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 553 transitions, 6916 flow [2024-11-13 13:47:00,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-13 13:47:00,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-13 13:47:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 473 transitions. [2024-11-13 13:47:00,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35193452380952384 [2024-11-13 13:47:00,119 INFO L175 Difference]: Start difference. First operand has 124 places, 198 transitions, 2428 flow. Second operand 32 states and 473 transitions. [2024-11-13 13:47:00,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 553 transitions, 6916 flow [2024-11-13 13:47:00,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 553 transitions, 5285 flow, removed 805 selfloop flow, removed 7 redundant places. [2024-11-13 13:47:00,504 INFO L231 Difference]: Finished difference. Result has 164 places, 343 transitions, 4235 flow [2024-11-13 13:47:00,504 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=4235, PETRI_PLACES=164, PETRI_TRANSITIONS=343} [2024-11-13 13:47:00,505 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 125 predicate places. [2024-11-13 13:47:00,505 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 343 transitions, 4235 flow [2024-11-13 13:47:00,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.275862068965518) internal successors, (269), 29 states have internal predecessors, (269), 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) [2024-11-13 13:47:00,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:00,506 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:00,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 13:47:00,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 13:47:00,710 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:47:00,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:00,711 INFO L85 PathProgramCache]: Analyzing trace with hash -779604944, now seen corresponding path program 1 times [2024-11-13 13:47:00,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:00,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60855712] [2024-11-13 13:47:00,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:00,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:47:01,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:01,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60855712] [2024-11-13 13:47:01,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60855712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:01,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52929577] [2024-11-13 13:47:01,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:01,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:01,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:01,353 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:01,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 13:47:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:01,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 13:47:01,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:01,923 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:47:01,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:47:01,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:47:01,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2024-11-13 13:47:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:47:02,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52929577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:47:02,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:47:02,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2024-11-13 13:47:02,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714274840] [2024-11-13 13:47:02,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:47:02,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 13:47:02,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:02,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 13:47:02,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2024-11-13 13:47:02,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:47:02,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 343 transitions, 4235 flow. Second operand has 32 states, 32 states have (on average 9.0625) internal successors, (290), 32 states have internal predecessors, (290), 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) [2024-11-13 13:47:02,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:02,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:47:02,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:05,282 INFO L124 PetriNetUnfolderBase]: 4303/8106 cut-off events. [2024-11-13 13:47:05,282 INFO L125 PetriNetUnfolderBase]: For 79784/79804 co-relation queries the response was YES. [2024-11-13 13:47:05,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31490 conditions, 8106 events. 4303/8106 cut-off events. For 79784/79804 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 53573 event pairs, 697 based on Foata normal form. 458/8562 useless extension candidates. Maximal degree in co-relation 29962. Up to 2144 conditions per place. [2024-11-13 13:47:05,330 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 145 selfloop transitions, 140 changer transitions 6/298 dead transitions. [2024-11-13 13:47:05,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 298 transitions, 3751 flow [2024-11-13 13:47:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 13:47:05,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-13 13:47:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 293 transitions. [2024-11-13 13:47:05,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3488095238095238 [2024-11-13 13:47:05,332 INFO L175 Difference]: Start difference. First operand has 164 places, 343 transitions, 4235 flow. Second operand 20 states and 293 transitions. [2024-11-13 13:47:05,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 298 transitions, 3751 flow [2024-11-13 13:47:05,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 298 transitions, 3362 flow, removed 150 selfloop flow, removed 19 redundant places. [2024-11-13 13:47:05,671 INFO L231 Difference]: Finished difference. Result has 164 places, 220 transitions, 3076 flow [2024-11-13 13:47:05,673 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2118, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3076, PETRI_PLACES=164, PETRI_TRANSITIONS=220} [2024-11-13 13:47:05,673 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 125 predicate places. [2024-11-13 13:47:05,673 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 220 transitions, 3076 flow [2024-11-13 13:47:05,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.0625) internal successors, (290), 32 states have internal predecessors, (290), 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) [2024-11-13 13:47:05,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:05,674 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:05,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 13:47:05,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 13:47:05,875 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:47:05,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:05,875 INFO L85 PathProgramCache]: Analyzing trace with hash 76151394, now seen corresponding path program 2 times [2024-11-13 13:47:05,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:05,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72668921] [2024-11-13 13:47:05,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:05,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:06,471 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:47:06,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:06,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72668921] [2024-11-13 13:47:06,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72668921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:06,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277603589] [2024-11-13 13:47:06,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:47:06,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:06,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:06,474 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:06,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 13:47:06,571 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:47:06,571 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:47:06,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 13:47:06,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:06,689 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 [2024-11-13 13:47:07,036 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:47:07,036 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:47:08,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2024-11-13 13:47:08,042 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-13 13:47:08,042 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 55 treesize of output 47 [2024-11-13 13:47:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:47:08,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277603589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:47:08,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:47:08,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 29 [2024-11-13 13:47:08,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53413843] [2024-11-13 13:47:08,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:47:08,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 13:47:08,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:08,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 13:47:08,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2024-11-13 13:47:08,371 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:47:08,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 220 transitions, 3076 flow. Second operand has 31 states, 31 states have (on average 9.129032258064516) internal successors, (283), 31 states have internal predecessors, (283), 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) [2024-11-13 13:47:08,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:08,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:47:08,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:11,144 INFO L124 PetriNetUnfolderBase]: 3949/7492 cut-off events. [2024-11-13 13:47:11,144 INFO L125 PetriNetUnfolderBase]: For 70259/70259 co-relation queries the response was YES. [2024-11-13 13:47:11,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28511 conditions, 7492 events. 3949/7492 cut-off events. For 70259/70259 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 49561 event pairs, 1565 based on Foata normal form. 296/7776 useless extension candidates. Maximal degree in co-relation 26962. Up to 2764 conditions per place. [2024-11-13 13:47:11,183 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 172 selfloop transitions, 95 changer transitions 29/303 dead transitions. [2024-11-13 13:47:11,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 303 transitions, 3778 flow [2024-11-13 13:47:11,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-13 13:47:11,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-13 13:47:11,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 347 transitions. [2024-11-13 13:47:11,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30599647266313934 [2024-11-13 13:47:11,185 INFO L175 Difference]: Start difference. First operand has 164 places, 220 transitions, 3076 flow. Second operand 27 states and 347 transitions. [2024-11-13 13:47:11,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 303 transitions, 3778 flow [2024-11-13 13:47:11,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 303 transitions, 3291 flow, removed 177 selfloop flow, removed 13 redundant places. [2024-11-13 13:47:11,458 INFO L231 Difference]: Finished difference. Result has 174 places, 187 transitions, 2364 flow [2024-11-13 13:47:11,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2259, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2364, PETRI_PLACES=174, PETRI_TRANSITIONS=187} [2024-11-13 13:47:11,458 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 135 predicate places. [2024-11-13 13:47:11,458 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 187 transitions, 2364 flow [2024-11-13 13:47:11,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.129032258064516) internal successors, (283), 31 states have internal predecessors, (283), 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) [2024-11-13 13:47:11,459 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:11,459 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:11,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 13:47:11,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:11,659 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:47:11,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:11,659 INFO L85 PathProgramCache]: Analyzing trace with hash -158005866, now seen corresponding path program 3 times [2024-11-13 13:47:11,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:11,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781252063] [2024-11-13 13:47:11,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:11,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:12,255 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:47:12,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:12,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781252063] [2024-11-13 13:47:12,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781252063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:12,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585993108] [2024-11-13 13:47:12,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:47:12,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:12,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:12,258 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:12,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 13:47:12,364 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 13:47:12,364 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:47:12,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 13:47:12,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 13:47:12,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:47:12,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:47:12,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2024-11-13 13:47:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 13:47:12,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585993108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:47:12,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:47:12,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 4] total 18 [2024-11-13 13:47:12,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248112206] [2024-11-13 13:47:12,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:47:12,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 13:47:12,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:12,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 13:47:12,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-13 13:47:12,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:47:12,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 187 transitions, 2364 flow. Second operand has 20 states, 20 states have (on average 10.1) internal successors, (202), 20 states have internal predecessors, (202), 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) [2024-11-13 13:47:12,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:12,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:47:12,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:15,169 INFO L124 PetriNetUnfolderBase]: 3723/7045 cut-off events. [2024-11-13 13:47:15,170 INFO L125 PetriNetUnfolderBase]: For 39061/39061 co-relation queries the response was YES. [2024-11-13 13:47:15,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25089 conditions, 7045 events. 3723/7045 cut-off events. For 39061/39061 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 45786 event pairs, 1054 based on Foata normal form. 38/7070 useless extension candidates. Maximal degree in co-relation 23925. Up to 3419 conditions per place. [2024-11-13 13:47:15,217 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 211 selfloop transitions, 74 changer transitions 14/306 dead transitions. [2024-11-13 13:47:15,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 306 transitions, 3394 flow [2024-11-13 13:47:15,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 13:47:15,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-13 13:47:15,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 351 transitions. [2024-11-13 13:47:15,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3342857142857143 [2024-11-13 13:47:15,220 INFO L175 Difference]: Start difference. First operand has 174 places, 187 transitions, 2364 flow. Second operand 25 states and 351 transitions. [2024-11-13 13:47:15,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 306 transitions, 3394 flow [2024-11-13 13:47:15,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 306 transitions, 3047 flow, removed 50 selfloop flow, removed 25 redundant places. [2024-11-13 13:47:15,365 INFO L231 Difference]: Finished difference. Result has 176 places, 194 transitions, 2343 flow [2024-11-13 13:47:15,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2343, PETRI_PLACES=176, PETRI_TRANSITIONS=194} [2024-11-13 13:47:15,366 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 137 predicate places. [2024-11-13 13:47:15,366 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 194 transitions, 2343 flow [2024-11-13 13:47:15,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.1) internal successors, (202), 20 states have internal predecessors, (202), 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) [2024-11-13 13:47:15,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:15,366 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:15,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 13:47:15,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:15,567 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:47:15,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:15,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2000777530, now seen corresponding path program 3 times [2024-11-13 13:47:15,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:15,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776455882] [2024-11-13 13:47:15,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:15,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:47:17,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:17,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776455882] [2024-11-13 13:47:17,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776455882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:17,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640492330] [2024-11-13 13:47:17,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:47:17,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:17,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:17,359 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:17,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 13:47:17,460 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 13:47:17,460 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:47:17,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 13:47:17,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:17,726 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:47:17,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:47:17,943 INFO L349 Elim1Store]: treesize reduction 13, result has 71.1 percent of original size [2024-11-13 13:47:17,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 49 [2024-11-13 13:47:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:47:18,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640492330] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:47:18,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:47:18,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 20 [2024-11-13 13:47:18,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91863764] [2024-11-13 13:47:18,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:47:18,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 13:47:18,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:18,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 13:47:18,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2024-11-13 13:47:18,269 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:47:18,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 194 transitions, 2343 flow. Second operand has 22 states, 22 states have (on average 9.909090909090908) internal successors, (218), 22 states have internal predecessors, (218), 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) [2024-11-13 13:47:18,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:18,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:47:18,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:20,819 INFO L124 PetriNetUnfolderBase]: 4849/9160 cut-off events. [2024-11-13 13:47:20,819 INFO L125 PetriNetUnfolderBase]: For 56833/56833 co-relation queries the response was YES. [2024-11-13 13:47:20,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33361 conditions, 9160 events. 4849/9160 cut-off events. For 56833/56833 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 61995 event pairs, 1324 based on Foata normal form. 90/9248 useless extension candidates. Maximal degree in co-relation 32202. Up to 4327 conditions per place. [2024-11-13 13:47:20,902 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 243 selfloop transitions, 116 changer transitions 14/380 dead transitions. [2024-11-13 13:47:20,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 380 transitions, 4549 flow [2024-11-13 13:47:20,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 13:47:20,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-13 13:47:20,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 398 transitions. [2024-11-13 13:47:20,904 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33843537414965985 [2024-11-13 13:47:20,904 INFO L175 Difference]: Start difference. First operand has 176 places, 194 transitions, 2343 flow. Second operand 28 states and 398 transitions. [2024-11-13 13:47:20,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 380 transitions, 4549 flow [2024-11-13 13:47:21,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 380 transitions, 4450 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-11-13 13:47:21,109 INFO L231 Difference]: Finished difference. Result has 206 places, 257 transitions, 3732 flow [2024-11-13 13:47:21,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2278, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3732, PETRI_PLACES=206, PETRI_TRANSITIONS=257} [2024-11-13 13:47:21,110 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 167 predicate places. [2024-11-13 13:47:21,110 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 257 transitions, 3732 flow [2024-11-13 13:47:21,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.909090909090908) internal successors, (218), 22 states have internal predecessors, (218), 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) [2024-11-13 13:47:21,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:21,110 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:21,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 13:47:21,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-13 13:47:21,311 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:47:21,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:21,312 INFO L85 PathProgramCache]: Analyzing trace with hash -788716371, now seen corresponding path program 4 times [2024-11-13 13:47:21,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:21,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808124781] [2024-11-13 13:47:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:21,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:22,453 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:47:22,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:22,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808124781] [2024-11-13 13:47:22,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808124781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:22,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599832896] [2024-11-13 13:47:22,454 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:47:22,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:22,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:22,456 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:22,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 13:47:22,550 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:47:22,550 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:47:22,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 13:47:22,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 13:47:22,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:47:22,992 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:47:22,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2024-11-13 13:47:23,111 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:47:23,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599832896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:47:23,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:47:23,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 4] total 23 [2024-11-13 13:47:23,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121496117] [2024-11-13 13:47:23,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:47:23,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 13:47:23,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:23,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 13:47:23,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2024-11-13 13:47:23,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:47:23,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 257 transitions, 3732 flow. Second operand has 25 states, 25 states have (on average 9.64) internal successors, (241), 25 states have internal predecessors, (241), 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) [2024-11-13 13:47:23,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:23,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:47:23,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:28,455 INFO L124 PetriNetUnfolderBase]: 6072/11562 cut-off events. [2024-11-13 13:47:28,456 INFO L125 PetriNetUnfolderBase]: For 117368/117368 co-relation queries the response was YES. [2024-11-13 13:47:28,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47224 conditions, 11562 events. 6072/11562 cut-off events. For 117368/117368 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 80867 event pairs, 1447 based on Foata normal form. 194/11753 useless extension candidates. Maximal degree in co-relation 46076. Up to 4196 conditions per place. [2024-11-13 13:47:28,555 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 351 selfloop transitions, 208 changer transitions 16/582 dead transitions. [2024-11-13 13:47:28,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 582 transitions, 7767 flow [2024-11-13 13:47:28,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-13 13:47:28,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-13 13:47:28,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 671 transitions. [2024-11-13 13:47:28,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33991894630192504 [2024-11-13 13:47:28,558 INFO L175 Difference]: Start difference. First operand has 206 places, 257 transitions, 3732 flow. Second operand 47 states and 671 transitions. [2024-11-13 13:47:28,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 582 transitions, 7767 flow [2024-11-13 13:47:29,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 582 transitions, 7358 flow, removed 180 selfloop flow, removed 9 redundant places. [2024-11-13 13:47:29,018 INFO L231 Difference]: Finished difference. Result has 261 places, 364 transitions, 6026 flow [2024-11-13 13:47:29,019 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3146, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=6026, PETRI_PLACES=261, PETRI_TRANSITIONS=364} [2024-11-13 13:47:29,019 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 222 predicate places. [2024-11-13 13:47:29,019 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 364 transitions, 6026 flow [2024-11-13 13:47:29,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.64) internal successors, (241), 25 states have internal predecessors, (241), 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) [2024-11-13 13:47:29,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:29,019 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:29,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 13:47:29,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-13 13:47:29,220 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:47:29,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:29,220 INFO L85 PathProgramCache]: Analyzing trace with hash 957712249, now seen corresponding path program 4 times [2024-11-13 13:47:29,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:29,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791243665] [2024-11-13 13:47:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:29,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:47:29,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:29,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791243665] [2024-11-13 13:47:29,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791243665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:29,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507264144] [2024-11-13 13:47:29,367 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:47:29,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:29,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:29,369 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:29,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 13:47:29,468 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:47:29,469 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:47:29,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 13:47:29,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:47:29,702 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:47:29,832 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:47:29,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507264144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:47:29,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:47:29,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-13 13:47:29,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503409618] [2024-11-13 13:47:29,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:47:29,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 13:47:29,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:29,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 13:47:29,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-13 13:47:29,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:47:29,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 364 transitions, 6026 flow. Second operand has 18 states, 18 states have (on average 9.277777777777779) internal successors, (167), 18 states have internal predecessors, (167), 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) [2024-11-13 13:47:29,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:29,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:47:29,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:32,202 INFO L124 PetriNetUnfolderBase]: 5684/10801 cut-off events. [2024-11-13 13:47:32,202 INFO L125 PetriNetUnfolderBase]: For 145642/145642 co-relation queries the response was YES. [2024-11-13 13:47:32,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48475 conditions, 10801 events. 5684/10801 cut-off events. For 145642/145642 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 75048 event pairs, 4570 based on Foata normal form. 6/10805 useless extension candidates. Maximal degree in co-relation 47139. Up to 9621 conditions per place. [2024-11-13 13:47:32,300 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 319 selfloop transitions, 13 changer transitions 22/361 dead transitions. [2024-11-13 13:47:32,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 361 transitions, 6356 flow [2024-11-13 13:47:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:47:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 13:47:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-11-13 13:47:32,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.291005291005291 [2024-11-13 13:47:32,302 INFO L175 Difference]: Start difference. First operand has 261 places, 364 transitions, 6026 flow. Second operand 9 states and 110 transitions. [2024-11-13 13:47:32,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 361 transitions, 6356 flow [2024-11-13 13:47:32,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 361 transitions, 5356 flow, removed 421 selfloop flow, removed 22 redundant places. [2024-11-13 13:47:32,868 INFO L231 Difference]: Finished difference. Result has 239 places, 339 transitions, 4605 flow [2024-11-13 13:47:32,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4603, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4605, PETRI_PLACES=239, PETRI_TRANSITIONS=339} [2024-11-13 13:47:32,869 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 200 predicate places. [2024-11-13 13:47:32,869 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 339 transitions, 4605 flow [2024-11-13 13:47:32,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.277777777777779) internal successors, (167), 18 states have internal predecessors, (167), 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) [2024-11-13 13:47:32,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:32,869 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:32,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 13:47:33,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:33,070 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:47:33,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:33,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1117212219, now seen corresponding path program 5 times [2024-11-13 13:47:33,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:33,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737153330] [2024-11-13 13:47:33,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:33,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:33,164 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 13:47:33,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:33,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737153330] [2024-11-13 13:47:33,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737153330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:33,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595083684] [2024-11-13 13:47:33,165 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:47:33,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:33,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:33,167 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:33,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 13:47:33,283 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 13:47:33,283 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:47:33,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:47:33,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 13:47:33,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:47:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:47:33,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595083684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:47:33,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:47:33,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 5] total 8 [2024-11-13 13:47:33,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786155273] [2024-11-13 13:47:33,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:47:33,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:47:33,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:33,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:47:33,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:47:33,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-11-13 13:47:33,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 339 transitions, 4605 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 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) [2024-11-13 13:47:33,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:33,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-11-13 13:47:33,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:36,763 INFO L124 PetriNetUnfolderBase]: 7563/14380 cut-off events. [2024-11-13 13:47:36,763 INFO L125 PetriNetUnfolderBase]: For 174843/174843 co-relation queries the response was YES. [2024-11-13 13:47:36,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60727 conditions, 14380 events. 7563/14380 cut-off events. For 174843/174843 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 105306 event pairs, 2301 based on Foata normal form. 134/14514 useless extension candidates. Maximal degree in co-relation 59385. Up to 7042 conditions per place. [2024-11-13 13:47:36,920 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 313 selfloop transitions, 147 changer transitions 2/469 dead transitions. [2024-11-13 13:47:36,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 469 transitions, 7313 flow [2024-11-13 13:47:37,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:47:37,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:47:37,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-11-13 13:47:37,140 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48095238095238096 [2024-11-13 13:47:37,140 INFO L175 Difference]: Start difference. First operand has 239 places, 339 transitions, 4605 flow. Second operand 5 states and 101 transitions. [2024-11-13 13:47:37,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 469 transitions, 7313 flow [2024-11-13 13:47:37,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 469 transitions, 7219 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-11-13 13:47:37,691 INFO L231 Difference]: Finished difference. Result has 235 places, 417 transitions, 6338 flow [2024-11-13 13:47:37,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4541, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6338, PETRI_PLACES=235, PETRI_TRANSITIONS=417} [2024-11-13 13:47:37,692 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 196 predicate places. [2024-11-13 13:47:37,692 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 417 transitions, 6338 flow [2024-11-13 13:47:37,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 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) [2024-11-13 13:47:37,692 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:37,692 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:37,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 13:47:37,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:37,892 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:47:37,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:37,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1720781510, now seen corresponding path program 6 times [2024-11-13 13:47:37,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:37,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191010946] [2024-11-13 13:47:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:37,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:39,134 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:47:39,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:39,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191010946] [2024-11-13 13:47:39,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191010946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:39,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142764462] [2024-11-13 13:47:39,135 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:47:39,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:39,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:39,137 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:39,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 13:47:39,256 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-13 13:47:39,256 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:47:39,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 13:47:39,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:47:39,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:47:40,311 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:47:40,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2024-11-13 13:47:40,983 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:47:40,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142764462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:47:40,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:47:40,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2024-11-13 13:47:40,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103326140] [2024-11-13 13:47:40,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:47:40,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 13:47:40,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:40,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 13:47:40,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1130, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 13:47:41,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:47:41,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 417 transitions, 6338 flow. Second operand has 38 states, 38 states have (on average 9.131578947368421) internal successors, (347), 38 states have internal predecessors, (347), 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) [2024-11-13 13:47:41,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:41,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:47:41,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:48,194 INFO L124 PetriNetUnfolderBase]: 10066/19085 cut-off events. [2024-11-13 13:47:48,194 INFO L125 PetriNetUnfolderBase]: For 285033/285033 co-relation queries the response was YES. [2024-11-13 13:47:48,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87489 conditions, 19085 events. 10066/19085 cut-off events. For 285033/285033 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 147872 event pairs, 2829 based on Foata normal form. 148/19232 useless extension candidates. Maximal degree in co-relation 83969. Up to 9437 conditions per place. [2024-11-13 13:47:48,610 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 515 selfloop transitions, 245 changer transitions 10/777 dead transitions. [2024-11-13 13:47:48,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 777 transitions, 11970 flow [2024-11-13 13:47:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-13 13:47:48,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-11-13 13:47:48,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 589 transitions. [2024-11-13 13:47:48,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33390022675736963 [2024-11-13 13:47:48,612 INFO L175 Difference]: Start difference. First operand has 235 places, 417 transitions, 6338 flow. Second operand 42 states and 589 transitions. [2024-11-13 13:47:48,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 777 transitions, 11970 flow [2024-11-13 13:47:49,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 777 transitions, 11830 flow, removed 70 selfloop flow, removed 1 redundant places. [2024-11-13 13:47:49,563 INFO L231 Difference]: Finished difference. Result has 296 places, 551 transitions, 9851 flow [2024-11-13 13:47:49,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6227, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=9851, PETRI_PLACES=296, PETRI_TRANSITIONS=551} [2024-11-13 13:47:49,564 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 257 predicate places. [2024-11-13 13:47:49,564 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 551 transitions, 9851 flow [2024-11-13 13:47:49,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 9.131578947368421) internal successors, (347), 38 states have internal predecessors, (347), 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) [2024-11-13 13:47:49,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:49,564 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:49,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 13:47:49,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:49,765 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:47:49,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:49,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1745359886, now seen corresponding path program 7 times [2024-11-13 13:47:49,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:49,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425538101] [2024-11-13 13:47:49,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:49,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:50,029 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:47:50,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:47:50,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425538101] [2024-11-13 13:47:50,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425538101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:47:50,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23782802] [2024-11-13 13:47:50,030 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:47:50,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:50,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:47:50,032 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:47:50,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 13:47:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:47:50,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 13:47:50,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:47:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 13:47:50,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:47:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 13:47:50,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23782802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:47:50,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:47:50,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2024-11-13 13:47:50,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246390992] [2024-11-13 13:47:50,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:47:50,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 13:47:50,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:47:50,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 13:47:50,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2024-11-13 13:47:50,863 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:47:50,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 551 transitions, 9851 flow. Second operand has 28 states, 28 states have (on average 9.107142857142858) internal successors, (255), 28 states have internal predecessors, (255), 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) [2024-11-13 13:47:50,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:47:50,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:47:50,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:47:55,321 INFO L124 PetriNetUnfolderBase]: 7027/13316 cut-off events. [2024-11-13 13:47:55,321 INFO L125 PetriNetUnfolderBase]: For 323992/323992 co-relation queries the response was YES. [2024-11-13 13:47:55,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73823 conditions, 13316 events. 7027/13316 cut-off events. For 323992/323992 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 95505 event pairs, 5255 based on Foata normal form. 18/13333 useless extension candidates. Maximal degree in co-relation 73727. Up to 11468 conditions per place. [2024-11-13 13:47:55,504 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 389 selfloop transitions, 13 changer transitions 53/462 dead transitions. [2024-11-13 13:47:55,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 462 transitions, 8839 flow [2024-11-13 13:47:55,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 13:47:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-13 13:47:55,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 192 transitions. [2024-11-13 13:47:55,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2024-11-13 13:47:55,512 INFO L175 Difference]: Start difference. First operand has 296 places, 551 transitions, 9851 flow. Second operand 16 states and 192 transitions. [2024-11-13 13:47:55,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 462 transitions, 8839 flow [2024-11-13 13:47:56,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 462 transitions, 7934 flow, removed 405 selfloop flow, removed 23 redundant places. [2024-11-13 13:47:56,797 INFO L231 Difference]: Finished difference. Result has 261 places, 409 transitions, 6812 flow [2024-11-13 13:47:56,797 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6931, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6812, PETRI_PLACES=261, PETRI_TRANSITIONS=409} [2024-11-13 13:47:56,797 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 222 predicate places. [2024-11-13 13:47:56,798 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 409 transitions, 6812 flow [2024-11-13 13:47:56,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.107142857142858) internal successors, (255), 28 states have internal predecessors, (255), 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) [2024-11-13 13:47:56,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:47:56,798 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:47:56,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 13:47:56,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:47:56,998 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:47:56,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:47:56,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1869207595, now seen corresponding path program 8 times [2024-11-13 13:47:56,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:47:56,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560821697] [2024-11-13 13:47:56,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:47:56,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:47:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:00,252 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:48:00,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:48:00,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560821697] [2024-11-13 13:48:00,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560821697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:48:00,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786815037] [2024-11-13 13:48:00,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:48:00,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:00,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:00,254 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:00,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 13:48:00,368 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:48:00,368 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:48:00,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 13:48:00,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:48:00,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:48:01,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:48:01,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2024-11-13 13:48:01,189 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 13:48:01,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786815037] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:48:01,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:48:01,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 4] total 28 [2024-11-13 13:48:01,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012417986] [2024-11-13 13:48:01,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:48:01,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 13:48:01,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:48:01,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 13:48:01,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2024-11-13 13:48:01,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:48:01,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 409 transitions, 6812 flow. Second operand has 30 states, 30 states have (on average 9.7) internal successors, (291), 30 states have internal predecessors, (291), 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) [2024-11-13 13:48:01,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:48:01,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:48:01,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:48:05,740 INFO L124 PetriNetUnfolderBase]: 6922/13121 cut-off events. [2024-11-13 13:48:05,741 INFO L125 PetriNetUnfolderBase]: For 285484/285484 co-relation queries the response was YES. [2024-11-13 13:48:05,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68951 conditions, 13121 events. 6922/13121 cut-off events. For 285484/285484 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 94476 event pairs, 1860 based on Foata normal form. 40/13161 useless extension candidates. Maximal degree in co-relation 68858. Up to 5879 conditions per place. [2024-11-13 13:48:05,895 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 363 selfloop transitions, 120 changer transitions 10/500 dead transitions. [2024-11-13 13:48:05,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 500 transitions, 8512 flow [2024-11-13 13:48:05,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 13:48:05,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-13 13:48:05,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 290 transitions. [2024-11-13 13:48:05,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31385281385281383 [2024-11-13 13:48:05,897 INFO L175 Difference]: Start difference. First operand has 261 places, 409 transitions, 6812 flow. Second operand 22 states and 290 transitions. [2024-11-13 13:48:05,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 500 transitions, 8512 flow [2024-11-13 13:48:06,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 500 transitions, 8372 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-11-13 13:48:06,773 INFO L231 Difference]: Finished difference. Result has 253 places, 415 transitions, 7043 flow [2024-11-13 13:48:06,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6603, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7043, PETRI_PLACES=253, PETRI_TRANSITIONS=415} [2024-11-13 13:48:06,774 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 214 predicate places. [2024-11-13 13:48:06,774 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 415 transitions, 7043 flow [2024-11-13 13:48:06,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.7) internal successors, (291), 30 states have internal predecessors, (291), 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) [2024-11-13 13:48:06,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:48:06,775 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:48:06,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 13:48:06,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:06,976 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:48:06,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:06,976 INFO L85 PathProgramCache]: Analyzing trace with hash 477796412, now seen corresponding path program 5 times [2024-11-13 13:48:06,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:06,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835015976] [2024-11-13 13:48:06,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:06,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:08,751 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:48:08,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:48:08,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835015976] [2024-11-13 13:48:08,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835015976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:48:08,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722141876] [2024-11-13 13:48:08,752 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:48:08,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:08,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:08,754 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:08,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 13:48:08,869 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 13:48:08,869 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:48:08,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 13:48:08,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:09,144 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 19 treesize of output 1 [2024-11-13 13:48:10,288 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:48:10,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:48:11,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 102 [2024-11-13 13:48:12,051 INFO L349 Elim1Store]: treesize reduction 24, result has 78.0 percent of original size [2024-11-13 13:48:12,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 309 treesize of output 295 [2024-11-13 13:48:30,272 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:48:30,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722141876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:48:30,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:48:30,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 44 [2024-11-13 13:48:30,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604071113] [2024-11-13 13:48:30,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:48:30,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-13 13:48:30,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:48:30,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-13 13:48:30,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1777, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 13:48:30,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:48:30,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 415 transitions, 7043 flow. Second operand has 46 states, 46 states have (on average 8.956521739130435) internal successors, (412), 46 states have internal predecessors, (412), 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) [2024-11-13 13:48:30,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:48:30,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:48:30,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:48:37,394 INFO L124 PetriNetUnfolderBase]: 5992/11267 cut-off events. [2024-11-13 13:48:37,394 INFO L125 PetriNetUnfolderBase]: For 342898/342898 co-relation queries the response was YES. [2024-11-13 13:48:37,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62568 conditions, 11267 events. 5992/11267 cut-off events. For 342898/342898 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 77175 event pairs, 935 based on Foata normal form. 348/11615 useless extension candidates. Maximal degree in co-relation 62475. Up to 2988 conditions per place. [2024-11-13 13:48:37,553 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 352 selfloop transitions, 227 changer transitions 21/607 dead transitions. [2024-11-13 13:48:37,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 607 transitions, 9711 flow [2024-11-13 13:48:37,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-13 13:48:37,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-11-13 13:48:37,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 769 transitions. [2024-11-13 13:48:37,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3454627133872417 [2024-11-13 13:48:37,555 INFO L175 Difference]: Start difference. First operand has 253 places, 415 transitions, 7043 flow. Second operand 53 states and 769 transitions. [2024-11-13 13:48:37,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 607 transitions, 9711 flow [2024-11-13 13:48:38,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 607 transitions, 8828 flow, removed 296 selfloop flow, removed 35 redundant places. [2024-11-13 13:48:38,483 INFO L231 Difference]: Finished difference. Result has 270 places, 343 transitions, 7135 flow [2024-11-13 13:48:38,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3437, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=7135, PETRI_PLACES=270, PETRI_TRANSITIONS=343} [2024-11-13 13:48:38,484 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 231 predicate places. [2024-11-13 13:48:38,484 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 343 transitions, 7135 flow [2024-11-13 13:48:38,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 8.956521739130435) internal successors, (412), 46 states have internal predecessors, (412), 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) [2024-11-13 13:48:38,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:48:38,485 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:48:38,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 13:48:38,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 13:48:38,685 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:48:38,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:38,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1076239141, now seen corresponding path program 9 times [2024-11-13 13:48:38,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:38,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055073641] [2024-11-13 13:48:38,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:38,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:48:39,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:48:39,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055073641] [2024-11-13 13:48:39,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055073641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:48:39,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470499524] [2024-11-13 13:48:39,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:48:39,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:39,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:39,286 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:39,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 13:48:39,396 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 13:48:39,396 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:48:39,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 13:48:39,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:48:39,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:48:39,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:48:39,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-11-13 13:48:40,347 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:48:40,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470499524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:48:40,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:48:40,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 37 [2024-11-13 13:48:40,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402044637] [2024-11-13 13:48:40,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:48:40,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-13 13:48:40,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:48:40,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-13 13:48:40,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1292, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 13:48:40,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:48:40,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 343 transitions, 7135 flow. Second operand has 39 states, 39 states have (on average 8.974358974358974) internal successors, (350), 39 states have internal predecessors, (350), 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) [2024-11-13 13:48:40,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:48:40,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:48:40,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:48:43,273 INFO L124 PetriNetUnfolderBase]: 4269/8114 cut-off events. [2024-11-13 13:48:43,274 INFO L125 PetriNetUnfolderBase]: For 288520/288520 co-relation queries the response was YES. [2024-11-13 13:48:43,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46006 conditions, 8114 events. 4269/8114 cut-off events. For 288520/288520 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 54470 event pairs, 992 based on Foata normal form. 104/8218 useless extension candidates. Maximal degree in co-relation 45908. Up to 3488 conditions per place. [2024-11-13 13:48:43,381 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 213 selfloop transitions, 84 changer transitions 12/316 dead transitions. [2024-11-13 13:48:43,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 316 transitions, 5578 flow [2024-11-13 13:48:43,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 13:48:43,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-13 13:48:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 330 transitions. [2024-11-13 13:48:43,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3273809523809524 [2024-11-13 13:48:43,383 INFO L175 Difference]: Start difference. First operand has 270 places, 343 transitions, 7135 flow. Second operand 24 states and 330 transitions. [2024-11-13 13:48:43,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 316 transitions, 5578 flow [2024-11-13 13:48:44,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 316 transitions, 4930 flow, removed 268 selfloop flow, removed 37 redundant places. [2024-11-13 13:48:44,086 INFO L231 Difference]: Finished difference. Result has 249 places, 225 transitions, 4098 flow [2024-11-13 13:48:44,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3760, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4098, PETRI_PLACES=249, PETRI_TRANSITIONS=225} [2024-11-13 13:48:44,087 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 210 predicate places. [2024-11-13 13:48:44,087 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 225 transitions, 4098 flow [2024-11-13 13:48:44,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 8.974358974358974) internal successors, (350), 39 states have internal predecessors, (350), 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) [2024-11-13 13:48:44,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:48:44,087 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:48:44,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 13:48:44,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 13:48:44,288 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:48:44,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:44,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2052576857, now seen corresponding path program 10 times [2024-11-13 13:48:44,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:44,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916487184] [2024-11-13 13:48:44,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:44,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:44,919 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:48:44,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:48:44,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916487184] [2024-11-13 13:48:44,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916487184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:48:44,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649723629] [2024-11-13 13:48:44,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:48:44,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:44,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:44,921 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:44,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 13:48:45,020 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:48:45,020 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:48:45,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 13:48:45,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:45,705 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:48:45,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:48:45,828 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-13 13:48:45,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 13:48:46,888 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:48:46,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649723629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:48:46,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:48:46,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2024-11-13 13:48:46,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556081467] [2024-11-13 13:48:46,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:48:46,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 13:48:46,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:48:46,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 13:48:46,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1909, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 13:48:47,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:48:47,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 225 transitions, 4098 flow. Second operand has 47 states, 47 states have (on average 8.914893617021276) internal successors, (419), 47 states have internal predecessors, (419), 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) [2024-11-13 13:48:47,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:48:47,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:48:47,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:48:52,494 INFO L124 PetriNetUnfolderBase]: 4054/7747 cut-off events. [2024-11-13 13:48:52,494 INFO L125 PetriNetUnfolderBase]: For 243746/243746 co-relation queries the response was YES. [2024-11-13 13:48:52,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42276 conditions, 7747 events. 4054/7747 cut-off events. For 243746/243746 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 51995 event pairs, 2168 based on Foata normal form. 40/7787 useless extension candidates. Maximal degree in co-relation 42186. Up to 4541 conditions per place. [2024-11-13 13:48:52,587 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 301 selfloop transitions, 82 changer transitions 17/407 dead transitions. [2024-11-13 13:48:52,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 407 transitions, 5393 flow [2024-11-13 13:48:52,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-13 13:48:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-13 13:48:52,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 581 transitions. [2024-11-13 13:48:52,589 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3007246376811594 [2024-11-13 13:48:52,589 INFO L175 Difference]: Start difference. First operand has 249 places, 225 transitions, 4098 flow. Second operand 46 states and 581 transitions. [2024-11-13 13:48:52,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 407 transitions, 5393 flow [2024-11-13 13:48:52,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 407 transitions, 5105 flow, removed 97 selfloop flow, removed 20 redundant places. [2024-11-13 13:48:52,971 INFO L231 Difference]: Finished difference. Result has 272 places, 228 transitions, 4115 flow [2024-11-13 13:48:52,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3761, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4115, PETRI_PLACES=272, PETRI_TRANSITIONS=228} [2024-11-13 13:48:52,972 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 233 predicate places. [2024-11-13 13:48:52,972 INFO L471 AbstractCegarLoop]: Abstraction has has 272 places, 228 transitions, 4115 flow [2024-11-13 13:48:52,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 8.914893617021276) internal successors, (419), 47 states have internal predecessors, (419), 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) [2024-11-13 13:48:52,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:48:52,972 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:48:52,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 13:48:53,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:53,173 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:48:53,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:53,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1962738420, now seen corresponding path program 6 times [2024-11-13 13:48:53,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:53,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953545809] [2024-11-13 13:48:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:53,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:54,010 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:48:54,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:48:54,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953545809] [2024-11-13 13:48:54,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953545809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:48:54,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784433808] [2024-11-13 13:48:54,011 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:48:54,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:54,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:54,013 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:54,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 13:48:54,115 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-13 13:48:54,115 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:48:54,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-13 13:48:54,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:54,284 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 15 treesize of output 1 [2024-11-13 13:48:54,852 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:48:54,852 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:48:55,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 72 [2024-11-13 13:48:55,736 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-13 13:48:55,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 150 treesize of output 131 [2024-11-13 13:48:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:48:56,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784433808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:48:56,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:48:56,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 44 [2024-11-13 13:48:56,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629442946] [2024-11-13 13:48:56,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:48:56,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-13 13:48:56,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:48:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-13 13:48:56,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=1754, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 13:48:56,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:48:56,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 228 transitions, 4115 flow. Second operand has 46 states, 46 states have (on average 8.956521739130435) internal successors, (412), 46 states have internal predecessors, (412), 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) [2024-11-13 13:48:56,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:48:56,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:48:56,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:49:00,546 INFO L124 PetriNetUnfolderBase]: 4543/8654 cut-off events. [2024-11-13 13:49:00,546 INFO L125 PetriNetUnfolderBase]: For 236294/236294 co-relation queries the response was YES. [2024-11-13 13:49:00,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46435 conditions, 8654 events. 4543/8654 cut-off events. For 236294/236294 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 58394 event pairs, 881 based on Foata normal form. 56/8710 useless extension candidates. Maximal degree in co-relation 46348. Up to 2560 conditions per place. [2024-11-13 13:49:00,627 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 284 selfloop transitions, 145 changer transitions 16/452 dead transitions. [2024-11-13 13:49:00,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 452 transitions, 6675 flow [2024-11-13 13:49:00,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-13 13:49:00,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-11-13 13:49:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 571 transitions. [2024-11-13 13:49:00,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32369614512471656 [2024-11-13 13:49:00,629 INFO L175 Difference]: Start difference. First operand has 272 places, 228 transitions, 4115 flow. Second operand 42 states and 571 transitions. [2024-11-13 13:49:00,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 452 transitions, 6675 flow [2024-11-13 13:49:00,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 452 transitions, 6380 flow, removed 117 selfloop flow, removed 20 redundant places. [2024-11-13 13:49:00,974 INFO L231 Difference]: Finished difference. Result has 303 places, 266 transitions, 5178 flow [2024-11-13 13:49:00,975 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3859, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=5178, PETRI_PLACES=303, PETRI_TRANSITIONS=266} [2024-11-13 13:49:00,975 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 264 predicate places. [2024-11-13 13:49:00,975 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 266 transitions, 5178 flow [2024-11-13 13:49:00,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 8.956521739130435) internal successors, (412), 46 states have internal predecessors, (412), 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) [2024-11-13 13:49:00,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:49:00,976 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:49:00,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 13:49:01,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:01,176 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:49:01,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:49:01,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1744653420, now seen corresponding path program 7 times [2024-11-13 13:49:01,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:49:01,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173765839] [2024-11-13 13:49:01,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:49:01,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:49:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:49:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:49:02,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:49:02,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173765839] [2024-11-13 13:49:02,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173765839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:49:02,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004989092] [2024-11-13 13:49:02,406 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:49:02,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:02,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:49:02,408 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:49:02,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 13:49:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:49:02,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 13:49:02,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:49:03,175 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:49:03,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:49:03,434 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-13 13:49:03,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 53 [2024-11-13 13:49:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:49:04,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004989092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:49:04,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:49:04,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 43 [2024-11-13 13:49:04,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006342173] [2024-11-13 13:49:04,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:49:04,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-13 13:49:04,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:49:04,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-13 13:49:04,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1703, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 13:49:04,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:49:04,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 266 transitions, 5178 flow. Second operand has 45 states, 45 states have (on average 9.0) internal successors, (405), 45 states have internal predecessors, (405), 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) [2024-11-13 13:49:04,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:49:04,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:49:04,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:49:08,068 INFO L124 PetriNetUnfolderBase]: 4533/8636 cut-off events. [2024-11-13 13:49:08,069 INFO L125 PetriNetUnfolderBase]: For 235105/235105 co-relation queries the response was YES. [2024-11-13 13:49:08,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47699 conditions, 8636 events. 4533/8636 cut-off events. For 235105/235105 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 58598 event pairs, 1371 based on Foata normal form. 8/8644 useless extension candidates. Maximal degree in co-relation 47604. Up to 5056 conditions per place. [2024-11-13 13:49:08,153 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 284 selfloop transitions, 77 changer transitions 10/378 dead transitions. [2024-11-13 13:49:08,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 378 transitions, 6204 flow [2024-11-13 13:49:08,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 13:49:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-13 13:49:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 393 transitions. [2024-11-13 13:49:08,154 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3119047619047619 [2024-11-13 13:49:08,154 INFO L175 Difference]: Start difference. First operand has 303 places, 266 transitions, 5178 flow. Second operand 30 states and 393 transitions. [2024-11-13 13:49:08,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 378 transitions, 6204 flow [2024-11-13 13:49:08,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 378 transitions, 5708 flow, removed 173 selfloop flow, removed 28 redundant places. [2024-11-13 13:49:08,585 INFO L231 Difference]: Finished difference. Result has 303 places, 265 transitions, 4814 flow [2024-11-13 13:49:08,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4660, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4814, PETRI_PLACES=303, PETRI_TRANSITIONS=265} [2024-11-13 13:49:08,585 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 264 predicate places. [2024-11-13 13:49:08,586 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 265 transitions, 4814 flow [2024-11-13 13:49:08,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 9.0) internal successors, (405), 45 states have internal predecessors, (405), 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) [2024-11-13 13:49:08,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:49:08,586 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:49:08,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 13:49:08,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:08,786 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:49:08,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:49:08,787 INFO L85 PathProgramCache]: Analyzing trace with hash -863936207, now seen corresponding path program 11 times [2024-11-13 13:49:08,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:49:08,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651543274] [2024-11-13 13:49:08,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:49:08,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:49:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:49:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:49:09,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:49:09,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651543274] [2024-11-13 13:49:09,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651543274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:49:09,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130042659] [2024-11-13 13:49:09,300 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:49:09,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:09,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:49:09,302 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:49:09,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 13:49:09,403 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 13:49:09,403 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:49:09,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-13 13:49:09,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:49:09,647 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 19 treesize of output 1 [2024-11-13 13:49:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:49:10,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:49:11,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 104 [2024-11-13 13:49:11,549 INFO L349 Elim1Store]: treesize reduction 18, result has 82.5 percent of original size [2024-11-13 13:49:11,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 318 treesize of output 303 [2024-11-13 13:49:17,489 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:49:17,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130042659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:49:17,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:49:17,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 44 [2024-11-13 13:49:17,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908448685] [2024-11-13 13:49:17,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:49:17,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-13 13:49:17,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:49:17,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-13 13:49:17,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1799, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 13:49:17,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:49:17,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 265 transitions, 4814 flow. Second operand has 46 states, 46 states have (on average 8.956521739130435) internal successors, (412), 46 states have internal predecessors, (412), 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) [2024-11-13 13:49:17,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:49:17,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:49:17,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:49:23,950 INFO L124 PetriNetUnfolderBase]: 5632/10723 cut-off events. [2024-11-13 13:49:23,950 INFO L125 PetriNetUnfolderBase]: For 338290/338290 co-relation queries the response was YES. [2024-11-13 13:49:24,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61101 conditions, 10723 events. 5632/10723 cut-off events. For 338290/338290 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 74032 event pairs, 661 based on Foata normal form. 160/10883 useless extension candidates. Maximal degree in co-relation 61007. Up to 1993 conditions per place. [2024-11-13 13:49:24,052 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 339 selfloop transitions, 234 changer transitions 29/609 dead transitions. [2024-11-13 13:49:24,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 609 transitions, 9549 flow [2024-11-13 13:49:24,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-13 13:49:24,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-13 13:49:24,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 803 transitions. [2024-11-13 13:49:24,054 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.335421888053467 [2024-11-13 13:49:24,054 INFO L175 Difference]: Start difference. First operand has 303 places, 265 transitions, 4814 flow. Second operand 57 states and 803 transitions. [2024-11-13 13:49:24,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 609 transitions, 9549 flow [2024-11-13 13:49:24,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 609 transitions, 9145 flow, removed 103 selfloop flow, removed 30 redundant places. [2024-11-13 13:49:24,559 INFO L231 Difference]: Finished difference. Result has 340 places, 323 transitions, 6808 flow [2024-11-13 13:49:24,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4316, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=6808, PETRI_PLACES=340, PETRI_TRANSITIONS=323} [2024-11-13 13:49:24,560 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 301 predicate places. [2024-11-13 13:49:24,560 INFO L471 AbstractCegarLoop]: Abstraction has has 340 places, 323 transitions, 6808 flow [2024-11-13 13:49:24,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 8.956521739130435) internal successors, (412), 46 states have internal predecessors, (412), 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) [2024-11-13 13:49:24,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:49:24,560 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:49:24,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 13:49:24,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:24,761 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:49:24,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:49:24,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1744653421, now seen corresponding path program 12 times [2024-11-13 13:49:24,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:49:24,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001255149] [2024-11-13 13:49:24,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:49:24,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:49:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:49:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:49:25,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:49:25,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001255149] [2024-11-13 13:49:25,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001255149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:49:25,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310802069] [2024-11-13 13:49:25,357 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:49:25,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:25,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:49:25,360 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:49:25,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 13:49:25,469 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-13 13:49:25,469 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:49:25,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 13:49:25,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:49:25,615 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 [2024-11-13 13:49:25,995 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:49:25,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:49:26,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2024-11-13 13:49:26,846 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-13 13:49:26,847 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 55 treesize of output 47 [2024-11-13 13:49:27,114 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:49:27,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310802069] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:49:27,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:49:27,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 43 [2024-11-13 13:49:27,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182526403] [2024-11-13 13:49:27,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:49:27,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-13 13:49:27,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:49:27,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-13 13:49:27,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1693, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 13:49:27,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:49:27,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 323 transitions, 6808 flow. Second operand has 45 states, 45 states have (on average 9.0) internal successors, (405), 45 states have internal predecessors, (405), 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) [2024-11-13 13:49:27,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:49:27,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:49:27,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:49:30,508 INFO L124 PetriNetUnfolderBase]: 5530/10473 cut-off events. [2024-11-13 13:49:30,508 INFO L125 PetriNetUnfolderBase]: For 373752/373752 co-relation queries the response was YES. [2024-11-13 13:49:30,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64025 conditions, 10473 events. 5530/10473 cut-off events. For 373752/373752 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 72357 event pairs, 3444 based on Foata normal form. 8/10473 useless extension candidates. Maximal degree in co-relation 63919. Up to 6883 conditions per place. [2024-11-13 13:49:30,633 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 294 selfloop transitions, 58 changer transitions 35/394 dead transitions. [2024-11-13 13:49:30,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 394 transitions, 7707 flow [2024-11-13 13:49:30,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 13:49:30,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-13 13:49:30,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 291 transitions. [2024-11-13 13:49:30,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30124223602484473 [2024-11-13 13:49:30,635 INFO L175 Difference]: Start difference. First operand has 340 places, 323 transitions, 6808 flow. Second operand 23 states and 291 transitions. [2024-11-13 13:49:30,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 394 transitions, 7707 flow [2024-11-13 13:49:31,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 394 transitions, 6885 flow, removed 324 selfloop flow, removed 29 redundant places. [2024-11-13 13:49:31,408 INFO L231 Difference]: Finished difference. Result has 325 places, 311 transitions, 5873 flow [2024-11-13 13:49:31,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5960, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5873, PETRI_PLACES=325, PETRI_TRANSITIONS=311} [2024-11-13 13:49:31,408 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 286 predicate places. [2024-11-13 13:49:31,408 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 311 transitions, 5873 flow [2024-11-13 13:49:31,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 9.0) internal successors, (405), 45 states have internal predecessors, (405), 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) [2024-11-13 13:49:31,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:49:31,409 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:49:31,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-13 13:49:31,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:31,609 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:49:31,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:49:31,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2052576858, now seen corresponding path program 8 times [2024-11-13 13:49:31,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:49:31,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619832277] [2024-11-13 13:49:31,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:49:31,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:49:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:49:32,448 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:49:32,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:49:32,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619832277] [2024-11-13 13:49:32,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619832277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:49:32,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495164265] [2024-11-13 13:49:32,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:49:32,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:32,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:49:32,450 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:49:32,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 13:49:32,566 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:49:32,566 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:49:32,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 13:49:32,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:49:32,740 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 [2024-11-13 13:49:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:49:33,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:49:35,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 102 [2024-11-13 13:49:35,113 INFO L349 Elim1Store]: treesize reduction 24, result has 78.0 percent of original size [2024-11-13 13:49:35,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 287 treesize of output 279 [2024-11-13 13:49:42,951 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:49:42,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495164265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:49:42,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:49:42,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 43 [2024-11-13 13:49:42,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070560045] [2024-11-13 13:49:42,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:49:42,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-13 13:49:42,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:49:42,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-13 13:49:42,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1733, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 13:49:43,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:49:43,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 311 transitions, 5873 flow. Second operand has 45 states, 45 states have (on average 9.0) internal successors, (405), 45 states have internal predecessors, (405), 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) [2024-11-13 13:49:43,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:49:43,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:49:43,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:49:48,929 INFO L124 PetriNetUnfolderBase]: 5331/10144 cut-off events. [2024-11-13 13:49:48,929 INFO L125 PetriNetUnfolderBase]: For 335670/335670 co-relation queries the response was YES. [2024-11-13 13:49:49,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59845 conditions, 10144 events. 5331/10144 cut-off events. For 335670/335670 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 70032 event pairs, 3394 based on Foata normal form. 24/10168 useless extension candidates. Maximal degree in co-relation 59740. Up to 7188 conditions per place. [2024-11-13 13:49:49,081 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 304 selfloop transitions, 70 changer transitions 39/420 dead transitions. [2024-11-13 13:49:49,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 420 transitions, 7036 flow [2024-11-13 13:49:49,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 13:49:49,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-13 13:49:49,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 374 transitions. [2024-11-13 13:49:49,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3070607553366174 [2024-11-13 13:49:49,082 INFO L175 Difference]: Start difference. First operand has 325 places, 311 transitions, 5873 flow. Second operand 29 states and 374 transitions. [2024-11-13 13:49:49,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 420 transitions, 7036 flow [2024-11-13 13:49:49,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 420 transitions, 6875 flow, removed 10 selfloop flow, removed 20 redundant places. [2024-11-13 13:49:49,913 INFO L231 Difference]: Finished difference. Result has 316 places, 309 transitions, 5851 flow [2024-11-13 13:49:49,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5635, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5851, PETRI_PLACES=316, PETRI_TRANSITIONS=309} [2024-11-13 13:49:49,913 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 277 predicate places. [2024-11-13 13:49:49,914 INFO L471 AbstractCegarLoop]: Abstraction has has 316 places, 309 transitions, 5851 flow [2024-11-13 13:49:49,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 9.0) internal successors, (405), 45 states have internal predecessors, (405), 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) [2024-11-13 13:49:49,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:49:49,914 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:49:49,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 13:49:50,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-13 13:49:50,114 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:49:50,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:49:50,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1652101289, now seen corresponding path program 13 times [2024-11-13 13:49:50,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:49:50,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37141995] [2024-11-13 13:49:50,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:49:50,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:49:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:49:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:49:50,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:49:50,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37141995] [2024-11-13 13:49:50,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37141995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:49:50,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662564394] [2024-11-13 13:49:50,648 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:49:50,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:50,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:49:50,650 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:49:50,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 13:49:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:49:50,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 13:49:50,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:49:51,288 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:49:51,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:49:51,347 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-13 13:49:51,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 13:49:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:49:52,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662564394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:49:52,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:49:52,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 41 [2024-11-13 13:49:52,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399770384] [2024-11-13 13:49:52,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:49:52,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-13 13:49:52,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:49:52,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-13 13:49:52,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1543, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 13:49:52,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:49:52,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 309 transitions, 5851 flow. Second operand has 43 states, 43 states have (on average 9.046511627906977) internal successors, (389), 43 states have internal predecessors, (389), 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) [2024-11-13 13:49:52,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:49:52,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:49:52,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:49:55,407 INFO L124 PetriNetUnfolderBase]: 5203/9926 cut-off events. [2024-11-13 13:49:55,407 INFO L125 PetriNetUnfolderBase]: For 326062/326062 co-relation queries the response was YES. [2024-11-13 13:49:55,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58958 conditions, 9926 events. 5203/9926 cut-off events. For 326062/326062 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 68315 event pairs, 1826 based on Foata normal form. 20/9942 useless extension candidates. Maximal degree in co-relation 58852. Up to 6733 conditions per place. [2024-11-13 13:49:55,545 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 329 selfloop transitions, 55 changer transitions 6/397 dead transitions. [2024-11-13 13:49:55,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 397 transitions, 6869 flow [2024-11-13 13:49:55,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-13 13:49:55,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-13 13:49:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 339 transitions. [2024-11-13 13:49:55,547 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29894179894179895 [2024-11-13 13:49:55,547 INFO L175 Difference]: Start difference. First operand has 316 places, 309 transitions, 5851 flow. Second operand 27 states and 339 transitions. [2024-11-13 13:49:55,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 397 transitions, 6869 flow [2024-11-13 13:49:56,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 397 transitions, 6679 flow, removed 37 selfloop flow, removed 25 redundant places. [2024-11-13 13:49:56,262 INFO L231 Difference]: Finished difference. Result has 308 places, 308 transitions, 5806 flow [2024-11-13 13:49:56,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5605, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5806, PETRI_PLACES=308, PETRI_TRANSITIONS=308} [2024-11-13 13:49:56,263 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 269 predicate places. [2024-11-13 13:49:56,263 INFO L471 AbstractCegarLoop]: Abstraction has has 308 places, 308 transitions, 5806 flow [2024-11-13 13:49:56,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 9.046511627906977) internal successors, (389), 43 states have internal predecessors, (389), 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) [2024-11-13 13:49:56,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:49:56,263 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:49:56,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 13:49:56,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-13 13:49:56,463 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:49:56,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:49:56,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1458374844, now seen corresponding path program 9 times [2024-11-13 13:49:56,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:49:56,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327340063] [2024-11-13 13:49:56,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:49:56,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:49:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:49:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:49:57,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:49:57,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327340063] [2024-11-13 13:49:57,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327340063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:49:57,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868538461] [2024-11-13 13:49:57,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:49:57,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:57,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:49:57,700 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:49:57,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 13:49:57,806 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 13:49:57,806 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:49:57,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 13:49:57,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:49:57,947 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 [2024-11-13 13:49:58,442 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:49:58,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:49:59,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 69 [2024-11-13 13:49:59,848 INFO L349 Elim1Store]: treesize reduction 23, result has 48.9 percent of original size [2024-11-13 13:49:59,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 129 treesize of output 113 [2024-11-13 13:50:00,266 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:50:00,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868538461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:50:00,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:50:00,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 40 [2024-11-13 13:50:00,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652882452] [2024-11-13 13:50:00,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:50:00,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 13:50:00,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:50:00,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 13:50:00,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1484, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 13:50:00,406 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:50:00,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 308 transitions, 5806 flow. Second operand has 42 states, 42 states have (on average 9.047619047619047) internal successors, (380), 42 states have internal predecessors, (380), 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) [2024-11-13 13:50:00,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:50:00,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:50:00,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:50:04,699 INFO L124 PetriNetUnfolderBase]: 4977/9498 cut-off events. [2024-11-13 13:50:04,699 INFO L125 PetriNetUnfolderBase]: For 283930/283930 co-relation queries the response was YES. [2024-11-13 13:50:04,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55808 conditions, 9498 events. 4977/9498 cut-off events. For 283930/283930 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 64214 event pairs, 1386 based on Foata normal form. 20/9518 useless extension candidates. Maximal degree in co-relation 55703. Up to 5989 conditions per place. [2024-11-13 13:50:04,808 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 272 selfloop transitions, 86 changer transitions 29/394 dead transitions. [2024-11-13 13:50:04,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 394 transitions, 6732 flow [2024-11-13 13:50:04,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-13 13:50:04,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-13 13:50:04,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 349 transitions. [2024-11-13 13:50:04,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30776014109347444 [2024-11-13 13:50:04,810 INFO L175 Difference]: Start difference. First operand has 308 places, 308 transitions, 5806 flow. Second operand 27 states and 349 transitions. [2024-11-13 13:50:04,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 394 transitions, 6732 flow [2024-11-13 13:50:05,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 394 transitions, 6532 flow, removed 62 selfloop flow, removed 28 redundant places. [2024-11-13 13:50:05,436 INFO L231 Difference]: Finished difference. Result has 286 places, 293 transitions, 5538 flow [2024-11-13 13:50:05,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5350, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5538, PETRI_PLACES=286, PETRI_TRANSITIONS=293} [2024-11-13 13:50:05,437 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 247 predicate places. [2024-11-13 13:50:05,437 INFO L471 AbstractCegarLoop]: Abstraction has has 286 places, 293 transitions, 5538 flow [2024-11-13 13:50:05,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 9.047619047619047) internal successors, (380), 42 states have internal predecessors, (380), 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) [2024-11-13 13:50:05,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:50:05,437 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:50:05,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-13 13:50:05,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 13:50:05,638 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:50:05,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:50:05,638 INFO L85 PathProgramCache]: Analyzing trace with hash -927106590, now seen corresponding path program 10 times [2024-11-13 13:50:05,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:50:05,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945581774] [2024-11-13 13:50:05,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:50:05,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:50:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:06,815 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:50:06,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:50:06,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945581774] [2024-11-13 13:50:06,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945581774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:50:06,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485202762] [2024-11-13 13:50:06,815 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:50:06,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:50:06,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:50:06,817 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:50:06,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 13:50:06,932 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:50:06,932 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:50:06,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 13:50:06,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:50:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:50:07,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:50:07,989 INFO L349 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2024-11-13 13:50:07,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 56 [2024-11-13 13:50:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:50:08,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485202762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:50:08,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:50:08,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 44 [2024-11-13 13:50:08,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912689315] [2024-11-13 13:50:08,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:50:08,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-13 13:50:08,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:50:08,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-13 13:50:08,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1849, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 13:50:09,134 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:50:09,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 293 transitions, 5538 flow. Second operand has 46 states, 46 states have (on average 8.956521739130435) internal successors, (412), 46 states have internal predecessors, (412), 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) [2024-11-13 13:50:09,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:50:09,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:50:09,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:50:13,252 INFO L124 PetriNetUnfolderBase]: 4892/9349 cut-off events. [2024-11-13 13:50:13,252 INFO L125 PetriNetUnfolderBase]: For 225912/225912 co-relation queries the response was YES. [2024-11-13 13:50:13,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52615 conditions, 9349 events. 4892/9349 cut-off events. For 225912/225912 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 63368 event pairs, 3300 based on Foata normal form. 16/9365 useless extension candidates. Maximal degree in co-relation 52519. Up to 7005 conditions per place. [2024-11-13 13:50:13,377 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 307 selfloop transitions, 35 changer transitions 22/371 dead transitions. [2024-11-13 13:50:13,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 371 transitions, 6426 flow [2024-11-13 13:50:13,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 13:50:13,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-13 13:50:13,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 305 transitions. [2024-11-13 13:50:13,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2904761904761905 [2024-11-13 13:50:13,379 INFO L175 Difference]: Start difference. First operand has 286 places, 293 transitions, 5538 flow. Second operand 25 states and 305 transitions. [2024-11-13 13:50:13,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 371 transitions, 6426 flow [2024-11-13 13:50:13,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 371 transitions, 6202 flow, removed 13 selfloop flow, removed 30 redundant places. [2024-11-13 13:50:13,966 INFO L231 Difference]: Finished difference. Result has 274 places, 289 transitions, 5299 flow [2024-11-13 13:50:13,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5261, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=5299, PETRI_PLACES=274, PETRI_TRANSITIONS=289} [2024-11-13 13:50:13,966 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 235 predicate places. [2024-11-13 13:50:13,966 INFO L471 AbstractCegarLoop]: Abstraction has has 274 places, 289 transitions, 5299 flow [2024-11-13 13:50:13,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 8.956521739130435) internal successors, (412), 46 states have internal predecessors, (412), 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) [2024-11-13 13:50:13,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:50:13,967 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:50:13,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-13 13:50:14,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-13 13:50:14,167 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:50:14,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:50:14,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1145191591, now seen corresponding path program 14 times [2024-11-13 13:50:14,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:50:14,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828964353] [2024-11-13 13:50:14,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:50:14,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:50:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:50:14,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:50:14,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828964353] [2024-11-13 13:50:14,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828964353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:50:14,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858983131] [2024-11-13 13:50:14,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:50:14,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:50:14,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:50:14,719 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:50:14,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 13:50:14,839 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:50:14,839 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:50:14,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 13:50:14,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:50:15,017 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 [2024-11-13 13:50:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:50:15,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:50:16,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2024-11-13 13:50:16,449 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-13 13:50:16,449 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 55 treesize of output 47 [2024-11-13 13:50:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:50:16,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858983131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:50:16,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:50:16,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 40 [2024-11-13 13:50:16,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148061507] [2024-11-13 13:50:16,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:50:16,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 13:50:16,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:50:16,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 13:50:16,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1520, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 13:50:16,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:50:16,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 289 transitions, 5299 flow. Second operand has 42 states, 42 states have (on average 9.142857142857142) internal successors, (384), 42 states have internal predecessors, (384), 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) [2024-11-13 13:50:16,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:50:16,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:50:16,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:50:20,105 INFO L124 PetriNetUnfolderBase]: 4814/9185 cut-off events. [2024-11-13 13:50:20,105 INFO L125 PetriNetUnfolderBase]: For 221822/221822 co-relation queries the response was YES. [2024-11-13 13:50:20,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51564 conditions, 9185 events. 4814/9185 cut-off events. For 221822/221822 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 61611 event pairs, 1044 based on Foata normal form. 16/9201 useless extension candidates. Maximal degree in co-relation 51471. Up to 4789 conditions per place. [2024-11-13 13:50:20,209 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 272 selfloop transitions, 90 changer transitions 10/379 dead transitions. [2024-11-13 13:50:20,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 379 transitions, 6445 flow [2024-11-13 13:50:20,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 13:50:20,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-13 13:50:20,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 322 transitions. [2024-11-13 13:50:20,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30666666666666664 [2024-11-13 13:50:20,211 INFO L175 Difference]: Start difference. First operand has 274 places, 289 transitions, 5299 flow. Second operand 25 states and 322 transitions. [2024-11-13 13:50:20,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 379 transitions, 6445 flow [2024-11-13 13:50:20,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 379 transitions, 6376 flow, removed 3 selfloop flow, removed 20 redundant places. [2024-11-13 13:50:20,746 INFO L231 Difference]: Finished difference. Result has 271 places, 289 transitions, 5476 flow [2024-11-13 13:50:20,747 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5205, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=5476, PETRI_PLACES=271, PETRI_TRANSITIONS=289} [2024-11-13 13:50:20,747 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 232 predicate places. [2024-11-13 13:50:20,747 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 289 transitions, 5476 flow [2024-11-13 13:50:20,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 9.142857142857142) internal successors, (384), 42 states have internal predecessors, (384), 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) [2024-11-13 13:50:20,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:50:20,748 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:50:20,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-13 13:50:20,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-13 13:50:20,952 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:50:20,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:50:20,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1145191590, now seen corresponding path program 11 times [2024-11-13 13:50:20,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:50:20,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496102734] [2024-11-13 13:50:20,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:50:20,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:50:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:50:22,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:50:22,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496102734] [2024-11-13 13:50:22,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496102734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:50:22,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691514170] [2024-11-13 13:50:22,228 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:50:22,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:50:22,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:50:22,230 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:50:22,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 13:50:22,345 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-13 13:50:22,345 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:50:22,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-13 13:50:22,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:50:22,540 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 15 treesize of output 1 [2024-11-13 13:50:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:50:23,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:50:24,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 104 [2024-11-13 13:50:24,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:50:24,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 319 treesize of output 303 [2024-11-13 13:50:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:50:26,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691514170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:50:26,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:50:26,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 44 [2024-11-13 13:50:26,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134874661] [2024-11-13 13:50:26,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:50:26,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-13 13:50:26,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:50:26,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-13 13:50:26,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1753, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 13:50:26,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:50:26,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 289 transitions, 5476 flow. Second operand has 46 states, 46 states have (on average 8.956521739130435) internal successors, (412), 46 states have internal predecessors, (412), 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) [2024-11-13 13:50:26,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:50:26,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:50:26,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:50:31,621 INFO L124 PetriNetUnfolderBase]: 5235/9936 cut-off events. [2024-11-13 13:50:31,621 INFO L125 PetriNetUnfolderBase]: For 273878/273878 co-relation queries the response was YES. [2024-11-13 13:50:31,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58098 conditions, 9936 events. 5235/9936 cut-off events. For 273878/273878 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 67598 event pairs, 1377 based on Foata normal form. 56/9992 useless extension candidates. Maximal degree in co-relation 58006. Up to 5631 conditions per place. [2024-11-13 13:50:31,756 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 320 selfloop transitions, 86 changer transitions 33/446 dead transitions. [2024-11-13 13:50:31,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 446 transitions, 7467 flow [2024-11-13 13:50:31,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 13:50:31,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-13 13:50:31,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 444 transitions. [2024-11-13 13:50:31,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31092436974789917 [2024-11-13 13:50:31,757 INFO L175 Difference]: Start difference. First operand has 271 places, 289 transitions, 5476 flow. Second operand 34 states and 444 transitions. [2024-11-13 13:50:31,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 446 transitions, 7467 flow [2024-11-13 13:50:32,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 446 transitions, 7270 flow, removed 26 selfloop flow, removed 21 redundant places. [2024-11-13 13:50:32,386 INFO L231 Difference]: Finished difference. Result has 282 places, 303 transitions, 5980 flow [2024-11-13 13:50:32,386 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5248, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=5980, PETRI_PLACES=282, PETRI_TRANSITIONS=303} [2024-11-13 13:50:32,386 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 243 predicate places. [2024-11-13 13:50:32,386 INFO L471 AbstractCegarLoop]: Abstraction has has 282 places, 303 transitions, 5980 flow [2024-11-13 13:50:32,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 8.956521739130435) internal successors, (412), 46 states have internal predecessors, (412), 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) [2024-11-13 13:50:32,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:50:32,387 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:50:32,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-13 13:50:32,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-13 13:50:32,587 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:50:32,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:50:32,588 INFO L85 PathProgramCache]: Analyzing trace with hash -362189433, now seen corresponding path program 15 times [2024-11-13 13:50:32,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:50:32,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590570421] [2024-11-13 13:50:32,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:50:32,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:50:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:50:33,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:50:33,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590570421] [2024-11-13 13:50:33,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590570421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:50:33,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736273603] [2024-11-13 13:50:33,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:50:33,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:50:33,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:50:33,127 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:50:33,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 13:50:33,247 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 13:50:33,247 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:50:33,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 13:50:33,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:50:33,764 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:50:33,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:50:33,900 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 13:50:33,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2024-11-13 13:50:34,245 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:50:34,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736273603] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:50:34,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:50:34,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 37 [2024-11-13 13:50:34,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458415904] [2024-11-13 13:50:34,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:50:34,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-13 13:50:34,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:50:34,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-13 13:50:34,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1277, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 13:50:34,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:50:34,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 303 transitions, 5980 flow. Second operand has 39 states, 39 states have (on average 8.897435897435898) internal successors, (347), 39 states have internal predecessors, (347), 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) [2024-11-13 13:50:34,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:50:34,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:50:34,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:50:37,402 INFO L124 PetriNetUnfolderBase]: 5153/9754 cut-off events. [2024-11-13 13:50:37,402 INFO L125 PetriNetUnfolderBase]: For 277507/277507 co-relation queries the response was YES. [2024-11-13 13:50:37,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58030 conditions, 9754 events. 5153/9754 cut-off events. For 277507/277507 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 66125 event pairs, 1676 based on Foata normal form. 8/9762 useless extension candidates. Maximal degree in co-relation 57931. Up to 7352 conditions per place. [2024-11-13 13:50:37,530 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 253 selfloop transitions, 53 changer transitions 58/371 dead transitions. [2024-11-13 13:50:37,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 371 transitions, 6892 flow [2024-11-13 13:50:37,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 13:50:37,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-13 13:50:37,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 260 transitions. [2024-11-13 13:50:37,531 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2947845804988662 [2024-11-13 13:50:37,531 INFO L175 Difference]: Start difference. First operand has 282 places, 303 transitions, 5980 flow. Second operand 21 states and 260 transitions. [2024-11-13 13:50:37,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 371 transitions, 6892 flow [2024-11-13 13:50:38,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 371 transitions, 6614 flow, removed 105 selfloop flow, removed 21 redundant places. [2024-11-13 13:50:38,568 INFO L231 Difference]: Finished difference. Result has 265 places, 293 transitions, 5680 flow [2024-11-13 13:50:38,569 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5686, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5680, PETRI_PLACES=265, PETRI_TRANSITIONS=293} [2024-11-13 13:50:38,570 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 226 predicate places. [2024-11-13 13:50:38,570 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 293 transitions, 5680 flow [2024-11-13 13:50:38,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 8.897435897435898) internal successors, (347), 39 states have internal predecessors, (347), 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) [2024-11-13 13:50:38,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:50:38,572 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:50:38,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 13:50:38,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:50:38,772 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:50:38,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:50:38,774 INFO L85 PathProgramCache]: Analyzing trace with hash 530041902, now seen corresponding path program 16 times [2024-11-13 13:50:38,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:50:38,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362251822] [2024-11-13 13:50:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:50:38,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:50:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:50:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:50:39,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:50:39,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362251822] [2024-11-13 13:50:39,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362251822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:50:39,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281633821] [2024-11-13 13:50:39,661 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:50:39,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:50:39,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:50:39,662 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:50:39,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 13:50:39,774 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:50:39,774 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:50:39,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 13:50:39,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:50:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:50:40,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:50:40,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:50:40,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 75 treesize of output 107 [2024-11-13 13:50:40,853 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 13:50:40,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281633821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:50:40,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:50:40,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 6] total 34 [2024-11-13 13:50:40,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178459602] [2024-11-13 13:50:40,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:50:40,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 13:50:40,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:50:40,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 13:50:40,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1117, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 13:50:40,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:50:40,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 293 transitions, 5680 flow. Second operand has 36 states, 36 states have (on average 9.5) internal successors, (342), 36 states have internal predecessors, (342), 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) [2024-11-13 13:50:40,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:50:40,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:50:40,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:50:58,524 INFO L124 PetriNetUnfolderBase]: 17152/32533 cut-off events. [2024-11-13 13:50:58,524 INFO L125 PetriNetUnfolderBase]: For 1324688/1324700 co-relation queries the response was YES. [2024-11-13 13:50:58,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212023 conditions, 32533 events. 17152/32533 cut-off events. For 1324688/1324700 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 270273 event pairs, 1891 based on Foata normal form. 644/33177 useless extension candidates. Maximal degree in co-relation 211927. Up to 6101 conditions per place. [2024-11-13 13:50:58,876 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 967 selfloop transitions, 946 changer transitions 12/1932 dead transitions. [2024-11-13 13:50:58,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 1932 transitions, 37304 flow [2024-11-13 13:50:58,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2024-11-13 13:50:58,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2024-11-13 13:50:58,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 2057 transitions. [2024-11-13 13:50:58,880 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37673992673992673 [2024-11-13 13:50:58,880 INFO L175 Difference]: Start difference. First operand has 265 places, 293 transitions, 5680 flow. Second operand 130 states and 2057 transitions. [2024-11-13 13:50:58,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 1932 transitions, 37304 flow [2024-11-13 13:51:02,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 1932 transitions, 35693 flow, removed 584 selfloop flow, removed 20 redundant places. [2024-11-13 13:51:02,761 INFO L231 Difference]: Finished difference. Result has 440 places, 1073 transitions, 27921 flow [2024-11-13 13:51:02,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5495, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=130, PETRI_FLOW=27921, PETRI_PLACES=440, PETRI_TRANSITIONS=1073} [2024-11-13 13:51:02,762 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 401 predicate places. [2024-11-13 13:51:02,762 INFO L471 AbstractCegarLoop]: Abstraction has has 440 places, 1073 transitions, 27921 flow [2024-11-13 13:51:02,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 9.5) internal successors, (342), 36 states have internal predecessors, (342), 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) [2024-11-13 13:51:02,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:51:02,762 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:51:02,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-13 13:51:02,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-13 13:51:02,963 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-13 13:51:02,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:51:02,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1313044060, now seen corresponding path program 17 times [2024-11-13 13:51:02,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:51:02,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539890029] [2024-11-13 13:51:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:51:02,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:51:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:51:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:51:03,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:51:03,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539890029] [2024-11-13 13:51:03,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539890029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:51:03,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129430713] [2024-11-13 13:51:03,815 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:51:03,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:51:03,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:51:03,817 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:51:03,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37464fbe-5a8f-400e-a06f-8b20c4aac9a1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-13 13:51:03,950 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-13 13:51:03,950 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:51:03,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 13:51:03,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:51:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 13:51:04,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:51:04,776 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:51:04,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 75 treesize of output 107 [2024-11-13 13:51:04,960 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 13:51:04,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129430713] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:51:04,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:51:04,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 6] total 32 [2024-11-13 13:51:04,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199492949] [2024-11-13 13:51:04,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:51:04,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 13:51:04,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:51:04,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 13:51:04,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 13:51:05,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-13 13:51:05,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 1073 transitions, 27921 flow. Second operand has 34 states, 34 states have (on average 9.588235294117647) internal successors, (326), 34 states have internal predecessors, (326), 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) [2024-11-13 13:51:05,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:51:05,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-13 13:51:05,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand