./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.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_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/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_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/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_475a7dbc-183d-450e-88e2-3c62db76f3b8/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 3dfcb4860b3021904fb2e25e7c2a428c9bcb0d82c2290cad723458395a0647ea --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:30:14,621 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:30:14,680 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 16:30:14,685 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:30:14,685 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:30:14,713 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:30:14,714 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:30:14,717 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:30:14,717 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:30:14,717 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:30:14,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:30:14,718 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:30:14,718 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:30:14,718 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:30:14,718 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:30:14,718 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:30:14,718 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:30:14,719 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:30:14,719 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:30:14,719 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:30:14,719 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:30:14,719 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:30:14,719 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:30:14,719 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:30:14,719 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:30:14,719 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 16:30:14,719 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 16:30:14,720 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:30:14,720 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:30:14,720 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:30:14,721 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:30:14,721 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:30:14,722 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:30:14,722 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:30:14,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:30:14,722 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:30:14,722 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:30:14,723 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:30:14,723 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:30:14,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:30:14,723 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:30:14,723 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:30:14,723 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:30:14,723 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:30:14,724 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_475a7dbc-183d-450e-88e2-3c62db76f3b8/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 -> 3dfcb4860b3021904fb2e25e7c2a428c9bcb0d82c2290cad723458395a0647ea [2024-11-13 16:30:15,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:30:15,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:30:15,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:30:15,015 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:30:15,016 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:30:15,017 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c Unable to find full path for "g++" [2024-11-13 16:30:16,939 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:30:17,258 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:30:17,258 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2024-11-13 16:30:17,267 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/data/9b0941956/ffe5cd1d3d4c4467bfeb82e37f7c7746/FLAG2f00f4964 [2024-11-13 16:30:17,285 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/data/9b0941956/ffe5cd1d3d4c4467bfeb82e37f7c7746 [2024-11-13 16:30:17,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:30:17,290 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:30:17,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:30:17,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:30:17,299 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:30:17,299 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:30:17" (1/1) ... [2024-11-13 16:30:17,300 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d8df41d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:30:17, skipping insertion in model container [2024-11-13 16:30:17,303 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:30:17" (1/1) ... [2024-11-13 16:30:17,330 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:30:17,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:30:17,533 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:30:17,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:30:17,586 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:30:17,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:30:17 WrapperNode [2024-11-13 16:30:17,587 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:30:17,588 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:30:17,588 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:30:17,588 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:30:17,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:30:17" (1/1) ... [2024-11-13 16:30:17,611 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:30:17" (1/1) ... [2024-11-13 16:30:17,671 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 29, calls inlined = 35, statements flattened = 426 [2024-11-13 16:30:17,672 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:30:17,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:30:17,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:30:17,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:30:17,686 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:30:17" (1/1) ... [2024-11-13 16:30:17,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:30:17" (1/1) ... [2024-11-13 16:30:17,693 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:30:17" (1/1) ... [2024-11-13 16:30:17,733 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 3, 16, 3]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 1, 4, 1]. [2024-11-13 16:30:17,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:30:17" (1/1) ... [2024-11-13 16:30:17,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:30:17" (1/1) ... [2024-11-13 16:30:17,755 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:30:17" (1/1) ... [2024-11-13 16:30:17,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:30:17" (1/1) ... [2024-11-13 16:30:17,763 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:30:17" (1/1) ... [2024-11-13 16:30:17,765 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:30:17" (1/1) ... [2024-11-13 16:30:17,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:30:17,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:30:17,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:30:17,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:30:17,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:30:17" (1/1) ... [2024-11-13 16:30:17,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:30:17,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:30:17,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:30:17,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:30:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:30:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 16:30:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 16:30:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 16:30:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-13 16:30:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 16:30:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 16:30:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 16:30:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 16:30:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 16:30:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 16:30:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 16:30:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 16:30:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 16:30:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 16:30:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 16:30:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-13 16:30:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 16:30:17,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 16:30:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 16:30:17,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 16:30:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 16:30:17,865 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 16:30:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:30:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 16:30:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 16:30:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 16:30:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 16:30:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 16:30:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 16:30:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:30:17,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:30:17,867 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 16:30:18,067 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:30:18,069 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:30:18,956 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 16:30:18,956 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:30:19,758 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:30:19,758 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-13 16:30:19,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:30:19 BoogieIcfgContainer [2024-11-13 16:30:19,759 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:30:19,761 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:30:19,761 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:30:19,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:30:19,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:30:17" (1/3) ... [2024-11-13 16:30:19,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@884876d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:30:19, skipping insertion in model container [2024-11-13 16:30:19,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:30:17" (2/3) ... [2024-11-13 16:30:19,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@884876d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:30:19, skipping insertion in model container [2024-11-13 16:30:19,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:30:19" (3/3) ... [2024-11-13 16:30:19,771 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2024-11-13 16:30:19,790 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:30:19,791 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-prod-cons-eq.wvr.c that has 4 procedures, 69 locations, 1 initial locations, 9 loop locations, and 24 error locations. [2024-11-13 16:30:19,791 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 16:30:19,916 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 16:30:19,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 77 transitions, 175 flow [2024-11-13 16:30:19,994 INFO L124 PetriNetUnfolderBase]: 9/74 cut-off events. [2024-11-13 16:30:19,996 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 16:30:20,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 74 events. 9/74 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 214 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-13 16:30:20,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 77 transitions, 175 flow [2024-11-13 16:30:20,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 72 transitions, 159 flow [2024-11-13 16:30:20,012 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:30:20,029 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;@79540cea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:30:20,029 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-13 16:30:20,033 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 16:30:20,034 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-13 16:30:20,034 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 16:30:20,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:20,035 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 16:30:20,035 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:20,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:20,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1374895, now seen corresponding path program 1 times [2024-11-13 16:30:20,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:20,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181279122] [2024-11-13 16:30:20,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:20,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:20,430 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 16:30:20,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:20,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181279122] [2024-11-13 16:30:20,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181279122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:20,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:30:20,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:30:20,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001729847] [2024-11-13 16:30:20,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:20,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:30:20,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:20,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:30:20,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:30:20,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-13 16:30:20,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 16:30:20,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:20,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-13 16:30:20,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:21,249 INFO L124 PetriNetUnfolderBase]: 1012/1488 cut-off events. [2024-11-13 16:30:21,251 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-13 16:30:21,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3003 conditions, 1488 events. 1012/1488 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 7856 event pairs, 595 based on Foata normal form. 4/842 useless extension candidates. Maximal degree in co-relation 2812. Up to 1367 conditions per place. [2024-11-13 16:30:21,276 INFO L140 encePairwiseOnDemand]: 55/77 looper letters, 32 selfloop transitions, 12 changer transitions 1/62 dead transitions. [2024-11-13 16:30:21,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 229 flow [2024-11-13 16:30:21,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:30:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:30:21,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-13 16:30:21,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4383116883116883 [2024-11-13 16:30:21,295 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 159 flow. Second operand 4 states and 135 transitions. [2024-11-13 16:30:21,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 229 flow [2024-11-13 16:30:21,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-13 16:30:21,314 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 151 flow [2024-11-13 16:30:21,318 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2024-11-13 16:30:21,322 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2024-11-13 16:30:21,322 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 151 flow [2024-11-13 16:30:21,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 16:30:21,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:21,323 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-13 16:30:21,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:30:21,323 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:21,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:21,324 INFO L85 PathProgramCache]: Analyzing trace with hash 42623138, now seen corresponding path program 1 times [2024-11-13 16:30:21,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:21,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787171780] [2024-11-13 16:30:21,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:21,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:21,474 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 16:30:21,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:21,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787171780] [2024-11-13 16:30:21,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787171780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:21,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:30:21,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:30:21,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074372880] [2024-11-13 16:30:21,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:21,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:30:21,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:21,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:30:21,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:30:21,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-13 16:30:21,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 16:30:21,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:21,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-13 16:30:21,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:22,095 INFO L124 PetriNetUnfolderBase]: 1012/1497 cut-off events. [2024-11-13 16:30:22,095 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-13 16:30:22,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3009 conditions, 1497 events. 1012/1497 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 7891 event pairs, 593 based on Foata normal form. 4/858 useless extension candidates. Maximal degree in co-relation 2911. Up to 1378 conditions per place. [2024-11-13 16:30:22,110 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 42 selfloop transitions, 14 changer transitions 0/73 dead transitions. [2024-11-13 16:30:22,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 307 flow [2024-11-13 16:30:22,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:30:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:30:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-11-13 16:30:22,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-13 16:30:22,115 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 151 flow. Second operand 4 states and 140 transitions. [2024-11-13 16:30:22,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 307 flow [2024-11-13 16:30:22,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 73 transitions, 263 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 16:30:22,121 INFO L231 Difference]: Finished difference. Result has 63 places, 73 transitions, 239 flow [2024-11-13 16:30:22,121 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=63, PETRI_TRANSITIONS=73} [2024-11-13 16:30:22,122 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2024-11-13 16:30:22,122 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 73 transitions, 239 flow [2024-11-13 16:30:22,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 16:30:22,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:22,123 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 16:30:22,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 16:30:22,124 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:22,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:22,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1986673768, now seen corresponding path program 1 times [2024-11-13 16:30:22,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:22,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454234548] [2024-11-13 16:30:22,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:22,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:22,310 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 16:30:22,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:22,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454234548] [2024-11-13 16:30:22,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454234548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:22,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:30:22,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:30:22,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179203298] [2024-11-13 16:30:22,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:22,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:30:22,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:22,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:30:22,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:30:22,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-13 16:30:22,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 16:30:22,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:22,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-13 16:30:22,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:22,763 INFO L124 PetriNetUnfolderBase]: 1013/1501 cut-off events. [2024-11-13 16:30:22,764 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-13 16:30:22,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3038 conditions, 1501 events. 1013/1501 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 7948 event pairs, 593 based on Foata normal form. 1/860 useless extension candidates. Maximal degree in co-relation 2947. Up to 1386 conditions per place. [2024-11-13 16:30:22,778 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 52 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2024-11-13 16:30:22,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 76 transitions, 359 flow [2024-11-13 16:30:22,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:30:22,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:30:22,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-11-13 16:30:22,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4902597402597403 [2024-11-13 16:30:22,780 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 239 flow. Second operand 4 states and 151 transitions. [2024-11-13 16:30:22,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 76 transitions, 359 flow [2024-11-13 16:30:22,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 359 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 16:30:22,785 INFO L231 Difference]: Finished difference. Result has 68 places, 76 transitions, 271 flow [2024-11-13 16:30:22,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=68, PETRI_TRANSITIONS=76} [2024-11-13 16:30:22,786 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -5 predicate places. [2024-11-13 16:30:22,787 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 76 transitions, 271 flow [2024-11-13 16:30:22,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 16:30:22,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:22,787 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-13 16:30:22,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:30:22,788 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:22,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:22,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1523023064, now seen corresponding path program 1 times [2024-11-13 16:30:22,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:22,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121910165] [2024-11-13 16:30:22,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:22,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:22,970 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 16:30:22,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:22,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121910165] [2024-11-13 16:30:22,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121910165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:30:22,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012027407] [2024-11-13 16:30:22,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:22,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:22,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:30:22,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:30:22,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:30:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:23,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 16:30:23,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:30:23,152 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 16:30:23,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:30:23,204 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 16:30:23,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012027407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:30:23,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:30:23,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-13 16:30:23,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742863728] [2024-11-13 16:30:23,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:30:23,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:30:23,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:23,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:30:23,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:30:23,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-13 16:30:23,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 76 transitions, 271 flow. Second operand has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 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 16:30:23,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:23,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-13 16:30:23,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:23,870 INFO L124 PetriNetUnfolderBase]: 1025/1549 cut-off events. [2024-11-13 16:30:23,870 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-11-13 16:30:23,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3185 conditions, 1549 events. 1025/1549 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 8374 event pairs, 593 based on Foata normal form. 0/903 useless extension candidates. Maximal degree in co-relation 3154. Up to 1387 conditions per place. [2024-11-13 16:30:23,882 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 45 selfloop transitions, 50 changer transitions 0/112 dead transitions. [2024-11-13 16:30:23,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 112 transitions, 626 flow [2024-11-13 16:30:23,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:30:23,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 16:30:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2024-11-13 16:30:23,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3948051948051948 [2024-11-13 16:30:23,885 INFO L175 Difference]: Start difference. First operand has 68 places, 76 transitions, 271 flow. Second operand 10 states and 304 transitions. [2024-11-13 16:30:23,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 112 transitions, 626 flow [2024-11-13 16:30:23,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 112 transitions, 619 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:30:23,889 INFO L231 Difference]: Finished difference. Result has 79 places, 112 transitions, 597 flow [2024-11-13 16:30:23,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=597, PETRI_PLACES=79, PETRI_TRANSITIONS=112} [2024-11-13 16:30:23,890 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2024-11-13 16:30:23,890 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 112 transitions, 597 flow [2024-11-13 16:30:23,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 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 16:30:23,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:23,891 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:23,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:30:24,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:24,096 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:24,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:24,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2067076058, now seen corresponding path program 1 times [2024-11-13 16:30:24,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:24,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183610428] [2024-11-13 16:30:24,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:24,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:24,287 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 16:30:24,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:24,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183610428] [2024-11-13 16:30:24,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183610428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:24,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:30:24,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:30:24,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872027162] [2024-11-13 16:30:24,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:24,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:30:24,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:24,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:30:24,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:30:24,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-13 16:30:24,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 112 transitions, 597 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:30:24,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:24,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-13 16:30:24,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:24,705 INFO L124 PetriNetUnfolderBase]: 1031/1574 cut-off events. [2024-11-13 16:30:24,705 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-11-13 16:30:24,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3354 conditions, 1574 events. 1031/1574 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 8597 event pairs, 593 based on Foata normal form. 1/935 useless extension candidates. Maximal degree in co-relation 3321. Up to 1425 conditions per place. [2024-11-13 16:30:24,717 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 102 selfloop transitions, 9 changer transitions 0/130 dead transitions. [2024-11-13 16:30:24,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 130 transitions, 933 flow [2024-11-13 16:30:24,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:30:24,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:30:24,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-11-13 16:30:24,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-13 16:30:24,718 INFO L175 Difference]: Start difference. First operand has 79 places, 112 transitions, 597 flow. Second operand 4 states and 154 transitions. [2024-11-13 16:30:24,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 130 transitions, 933 flow [2024-11-13 16:30:24,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 130 transitions, 772 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-11-13 16:30:24,725 INFO L231 Difference]: Finished difference. Result has 80 places, 119 transitions, 544 flow [2024-11-13 16:30:24,725 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=544, PETRI_PLACES=80, PETRI_TRANSITIONS=119} [2024-11-13 16:30:24,726 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2024-11-13 16:30:24,726 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 119 transitions, 544 flow [2024-11-13 16:30:24,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:30:24,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:24,726 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:24,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 16:30:24,727 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:24,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:24,727 INFO L85 PathProgramCache]: Analyzing trace with hash -347483068, now seen corresponding path program 1 times [2024-11-13 16:30:24,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:24,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555360151] [2024-11-13 16:30:24,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:24,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:30:24,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:24,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555360151] [2024-11-13 16:30:24,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555360151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:24,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:30:24,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:30:24,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135726562] [2024-11-13 16:30:24,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:24,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:30:24,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:24,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:30:24,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:30:24,956 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-13 16:30:24,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 119 transitions, 544 flow. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:30:24,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:24,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-13 16:30:24,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:25,586 INFO L124 PetriNetUnfolderBase]: 1409/2292 cut-off events. [2024-11-13 16:30:25,587 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-13 16:30:25,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4837 conditions, 2292 events. 1409/2292 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 14706 event pairs, 953 based on Foata normal form. 33/1461 useless extension candidates. Maximal degree in co-relation 4802. Up to 1410 conditions per place. [2024-11-13 16:30:25,602 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 144 selfloop transitions, 13 changer transitions 0/178 dead transitions. [2024-11-13 16:30:25,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 178 transitions, 1134 flow [2024-11-13 16:30:25,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:30:25,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:30:25,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 214 transitions. [2024-11-13 16:30:25,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5558441558441558 [2024-11-13 16:30:25,604 INFO L175 Difference]: Start difference. First operand has 80 places, 119 transitions, 544 flow. Second operand 5 states and 214 transitions. [2024-11-13 16:30:25,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 178 transitions, 1134 flow [2024-11-13 16:30:25,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 178 transitions, 1127 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:30:25,610 INFO L231 Difference]: Finished difference. Result has 85 places, 125 transitions, 634 flow [2024-11-13 16:30:25,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=634, PETRI_PLACES=85, PETRI_TRANSITIONS=125} [2024-11-13 16:30:25,611 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 12 predicate places. [2024-11-13 16:30:25,611 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 125 transitions, 634 flow [2024-11-13 16:30:25,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:30:25,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:25,612 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:25,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 16:30:25,612 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:25,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:25,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2109613972, now seen corresponding path program 1 times [2024-11-13 16:30:25,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:25,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108579854] [2024-11-13 16:30:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:25,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:25,719 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 16:30:25,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:25,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108579854] [2024-11-13 16:30:25,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108579854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:25,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:30:25,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 16:30:25,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496752011] [2024-11-13 16:30:25,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:25,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:30:25,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:25,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:30:25,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:30:25,733 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-13 16:30:25,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 125 transitions, 634 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:30:25,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:25,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-13 16:30:25,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:26,281 INFO L124 PetriNetUnfolderBase]: 1349/2084 cut-off events. [2024-11-13 16:30:26,281 INFO L125 PetriNetUnfolderBase]: For 316/316 co-relation queries the response was YES. [2024-11-13 16:30:26,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4691 conditions, 2084 events. 1349/2084 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 11121 event pairs, 327 based on Foata normal form. 32/1599 useless extension candidates. Maximal degree in co-relation 4653. Up to 1554 conditions per place. [2024-11-13 16:30:26,292 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 112 selfloop transitions, 2 changer transitions 2/137 dead transitions. [2024-11-13 16:30:26,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 137 transitions, 896 flow [2024-11-13 16:30:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:30:26,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:30:26,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2024-11-13 16:30:26,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6147186147186147 [2024-11-13 16:30:26,294 INFO L175 Difference]: Start difference. First operand has 85 places, 125 transitions, 634 flow. Second operand 3 states and 142 transitions. [2024-11-13 16:30:26,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 137 transitions, 896 flow [2024-11-13 16:30:26,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 137 transitions, 888 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 16:30:26,301 INFO L231 Difference]: Finished difference. Result has 87 places, 126 transitions, 648 flow [2024-11-13 16:30:26,301 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=648, PETRI_PLACES=87, PETRI_TRANSITIONS=126} [2024-11-13 16:30:26,303 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 14 predicate places. [2024-11-13 16:30:26,303 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 126 transitions, 648 flow [2024-11-13 16:30:26,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:30:26,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:26,304 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:26,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 16:30:26,304 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:26,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:26,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2109613971, now seen corresponding path program 1 times [2024-11-13 16:30:26,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:26,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210118077] [2024-11-13 16:30:26,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:26,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:26,435 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 16:30:26,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:26,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210118077] [2024-11-13 16:30:26,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210118077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:26,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:30:26,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 16:30:26,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030926347] [2024-11-13 16:30:26,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:26,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:30:26,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:26,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:30:26,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:30:26,445 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-13 16:30:26,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 126 transitions, 648 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:30:26,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:26,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-13 16:30:26,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:26,901 INFO L124 PetriNetUnfolderBase]: 1300/1995 cut-off events. [2024-11-13 16:30:26,901 INFO L125 PetriNetUnfolderBase]: For 480/486 co-relation queries the response was YES. [2024-11-13 16:30:26,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5173 conditions, 1995 events. 1300/1995 cut-off events. For 480/486 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10456 event pairs, 284 based on Foata normal form. 28/1579 useless extension candidates. Maximal degree in co-relation 5134. Up to 1554 conditions per place. [2024-11-13 16:30:26,913 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 111 selfloop transitions, 2 changer transitions 2/136 dead transitions. [2024-11-13 16:30:26,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 136 transitions, 904 flow [2024-11-13 16:30:26,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:30:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:30:26,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-11-13 16:30:26,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5887445887445888 [2024-11-13 16:30:26,914 INFO L175 Difference]: Start difference. First operand has 87 places, 126 transitions, 648 flow. Second operand 3 states and 136 transitions. [2024-11-13 16:30:26,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 136 transitions, 904 flow [2024-11-13 16:30:26,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 136 transitions, 902 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:30:26,924 INFO L231 Difference]: Finished difference. Result has 89 places, 126 transitions, 654 flow [2024-11-13 16:30:26,924 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=654, PETRI_PLACES=89, PETRI_TRANSITIONS=126} [2024-11-13 16:30:26,928 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 16 predicate places. [2024-11-13 16:30:26,928 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 126 transitions, 654 flow [2024-11-13 16:30:26,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:30:26,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:26,928 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:26,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 16:30:26,929 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:26,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:26,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1146083211, now seen corresponding path program 1 times [2024-11-13 16:30:26,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:26,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004456158] [2024-11-13 16:30:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:26,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:30:27,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:27,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004456158] [2024-11-13 16:30:27,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004456158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:30:27,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002670456] [2024-11-13 16:30:27,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:27,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:27,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:30:27,094 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:30:27,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:30:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:27,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 16:30:27,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:30:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:30:27,293 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:30:27,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002670456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:27,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:30:27,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-13 16:30:27,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612051230] [2024-11-13 16:30:27,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:27,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:30:27,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:27,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:30:27,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:30:27,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-13 16:30:27,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 126 transitions, 654 flow. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 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 16:30:27,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:27,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-13 16:30:27,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:27,784 INFO L124 PetriNetUnfolderBase]: 991/1665 cut-off events. [2024-11-13 16:30:27,784 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-11-13 16:30:27,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4369 conditions, 1665 events. 991/1665 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10013 event pairs, 721 based on Foata normal form. 1/1372 useless extension candidates. Maximal degree in co-relation 4330. Up to 1519 conditions per place. [2024-11-13 16:30:27,803 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 89 selfloop transitions, 17 changer transitions 0/125 dead transitions. [2024-11-13 16:30:27,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 125 transitions, 862 flow [2024-11-13 16:30:27,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:30:27,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 16:30:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-11-13 16:30:27,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43506493506493504 [2024-11-13 16:30:27,806 INFO L175 Difference]: Start difference. First operand has 89 places, 126 transitions, 654 flow. Second operand 6 states and 201 transitions. [2024-11-13 16:30:27,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 125 transitions, 862 flow [2024-11-13 16:30:27,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 125 transitions, 858 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 16:30:27,812 INFO L231 Difference]: Finished difference. Result has 91 places, 125 transitions, 680 flow [2024-11-13 16:30:27,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=680, PETRI_PLACES=91, PETRI_TRANSITIONS=125} [2024-11-13 16:30:27,814 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 18 predicate places. [2024-11-13 16:30:27,814 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 125 transitions, 680 flow [2024-11-13 16:30:27,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 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 16:30:27,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:27,814 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:27,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 16:30:28,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 16:30:28,015 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:28,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:28,015 INFO L85 PathProgramCache]: Analyzing trace with hash -219160225, now seen corresponding path program 1 times [2024-11-13 16:30:28,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:28,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324462980] [2024-11-13 16:30:28,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:28,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:28,187 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 16:30:28,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:28,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324462980] [2024-11-13 16:30:28,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324462980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:30:28,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966214277] [2024-11-13 16:30:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:28,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:28,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:30:28,191 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:30:28,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:30:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:28,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 16:30:28,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:30:28,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:30:28,381 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:30:28,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966214277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:28,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:30:28,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-13 16:30:28,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886763059] [2024-11-13 16:30:28,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:28,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:30:28,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:28,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:30:28,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:30:28,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-13 16:30:28,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 125 transitions, 680 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 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 16:30:28,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:28,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-13 16:30:28,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:28,848 INFO L124 PetriNetUnfolderBase]: 991/1663 cut-off events. [2024-11-13 16:30:28,848 INFO L125 PetriNetUnfolderBase]: For 488/488 co-relation queries the response was YES. [2024-11-13 16:30:28,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4352 conditions, 1663 events. 991/1663 cut-off events. For 488/488 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9943 event pairs, 721 based on Foata normal form. 2/1370 useless extension candidates. Maximal degree in co-relation 4309. Up to 1462 conditions per place. [2024-11-13 16:30:28,859 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 100 selfloop transitions, 17 changer transitions 0/135 dead transitions. [2024-11-13 16:30:28,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 135 transitions, 966 flow [2024-11-13 16:30:28,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:30:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 16:30:28,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 204 transitions. [2024-11-13 16:30:28,861 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-11-13 16:30:28,861 INFO L175 Difference]: Start difference. First operand has 91 places, 125 transitions, 680 flow. Second operand 6 states and 204 transitions. [2024-11-13 16:30:28,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 135 transitions, 966 flow [2024-11-13 16:30:28,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 135 transitions, 904 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-13 16:30:28,871 INFO L231 Difference]: Finished difference. Result has 90 places, 124 transitions, 648 flow [2024-11-13 16:30:28,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=648, PETRI_PLACES=90, PETRI_TRANSITIONS=124} [2024-11-13 16:30:28,873 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 17 predicate places. [2024-11-13 16:30:28,873 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 124 transitions, 648 flow [2024-11-13 16:30:28,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 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 16:30:28,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:28,873 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:28,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 16:30:29,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 16:30:29,074 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:29,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:29,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1168842584, now seen corresponding path program 1 times [2024-11-13 16:30:29,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:29,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293981779] [2024-11-13 16:30:29,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:29,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:30:29,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:29,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293981779] [2024-11-13 16:30:29,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293981779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:30:29,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523223570] [2024-11-13 16:30:29,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:29,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:29,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:30:29,229 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:30:29,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:30:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:29,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 16:30:29,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:30:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:30:29,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:30:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:30:29,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523223570] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:30:29,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:30:29,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-13 16:30:29,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911592800] [2024-11-13 16:30:29,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:30:29,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 16:30:29,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:29,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 16:30:29,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-13 16:30:29,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-13 16:30:29,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 124 transitions, 648 flow. Second operand has 12 states, 12 states have (on average 27.5) internal successors, (330), 12 states have internal predecessors, (330), 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 16:30:29,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:29,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-13 16:30:29,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:30,033 INFO L124 PetriNetUnfolderBase]: 994/1675 cut-off events. [2024-11-13 16:30:30,033 INFO L125 PetriNetUnfolderBase]: For 501/501 co-relation queries the response was YES. [2024-11-13 16:30:30,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4383 conditions, 1675 events. 994/1675 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10037 event pairs, 721 based on Foata normal form. 3/1385 useless extension candidates. Maximal degree in co-relation 4313. Up to 1526 conditions per place. [2024-11-13 16:30:30,041 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 92 selfloop transitions, 23 changer transitions 0/133 dead transitions. [2024-11-13 16:30:30,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 133 transitions, 920 flow [2024-11-13 16:30:30,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:30:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 16:30:30,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 316 transitions. [2024-11-13 16:30:30,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4103896103896104 [2024-11-13 16:30:30,044 INFO L175 Difference]: Start difference. First operand has 90 places, 124 transitions, 648 flow. Second operand 10 states and 316 transitions. [2024-11-13 16:30:30,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 133 transitions, 920 flow [2024-11-13 16:30:30,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 133 transitions, 870 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-13 16:30:30,049 INFO L231 Difference]: Finished difference. Result has 98 places, 133 transitions, 704 flow [2024-11-13 16:30:30,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=704, PETRI_PLACES=98, PETRI_TRANSITIONS=133} [2024-11-13 16:30:30,050 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 25 predicate places. [2024-11-13 16:30:30,050 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 133 transitions, 704 flow [2024-11-13 16:30:30,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.5) internal successors, (330), 12 states have internal predecessors, (330), 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 16:30:30,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:30,050 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:30,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 16:30:30,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:30,254 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:30,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:30,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1795968970, now seen corresponding path program 1 times [2024-11-13 16:30:30,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:30,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390548636] [2024-11-13 16:30:30,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:30,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:30:30,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:30,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390548636] [2024-11-13 16:30:30,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390548636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:30:30,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235540240] [2024-11-13 16:30:30,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:30,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:30,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:30:30,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:30:30,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:30:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:30,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 16:30:30,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:30:30,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:30:30,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:30:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:30:30,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235540240] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:30:30,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:30:30,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-13 16:30:30,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274306719] [2024-11-13 16:30:30,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:30:30,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 16:30:30,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:30,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 16:30:30,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-13 16:30:30,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-13 16:30:30,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 133 transitions, 704 flow. Second operand has 12 states, 12 states have (on average 27.833333333333332) internal successors, (334), 12 states have internal predecessors, (334), 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 16:30:30,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:30,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-13 16:30:30,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:31,211 INFO L124 PetriNetUnfolderBase]: 1030/1825 cut-off events. [2024-11-13 16:30:31,212 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2024-11-13 16:30:31,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4830 conditions, 1825 events. 1030/1825 cut-off events. For 607/607 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 11219 event pairs, 721 based on Foata normal form. 6/1537 useless extension candidates. Maximal degree in co-relation 4785. Up to 1512 conditions per place. [2024-11-13 16:30:31,225 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 146 selfloop transitions, 34 changer transitions 0/198 dead transitions. [2024-11-13 16:30:31,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 198 transitions, 1408 flow [2024-11-13 16:30:31,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:30:31,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 16:30:31,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2024-11-13 16:30:31,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42597402597402595 [2024-11-13 16:30:31,228 INFO L175 Difference]: Start difference. First operand has 98 places, 133 transitions, 704 flow. Second operand 10 states and 328 transitions. [2024-11-13 16:30:31,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 198 transitions, 1408 flow [2024-11-13 16:30:31,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 198 transitions, 1387 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-13 16:30:31,237 INFO L231 Difference]: Finished difference. Result has 108 places, 154 transitions, 909 flow [2024-11-13 16:30:31,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=909, PETRI_PLACES=108, PETRI_TRANSITIONS=154} [2024-11-13 16:30:31,238 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 35 predicate places. [2024-11-13 16:30:31,238 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 154 transitions, 909 flow [2024-11-13 16:30:31,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.833333333333332) internal successors, (334), 12 states have internal predecessors, (334), 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 16:30:31,239 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:31,239 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:31,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 16:30:31,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:31,440 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:31,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:31,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1958773753, now seen corresponding path program 1 times [2024-11-13 16:30:31,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:31,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088775271] [2024-11-13 16:30:31,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:31,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:31,624 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 16:30:31,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:31,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088775271] [2024-11-13 16:30:31,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088775271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:31,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:30:31,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:30:31,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718073419] [2024-11-13 16:30:31,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:31,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:30:31,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:31,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:30:31,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:30:31,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-13 16:30:31,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 154 transitions, 909 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:30:31,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:31,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-13 16:30:31,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:32,151 INFO L124 PetriNetUnfolderBase]: 1170/2312 cut-off events. [2024-11-13 16:30:32,151 INFO L125 PetriNetUnfolderBase]: For 1229/1229 co-relation queries the response was YES. [2024-11-13 16:30:32,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6332 conditions, 2312 events. 1170/2312 cut-off events. For 1229/1229 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 15364 event pairs, 783 based on Foata normal form. 34/2051 useless extension candidates. Maximal degree in co-relation 6255. Up to 1647 conditions per place. [2024-11-13 16:30:32,165 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 224 selfloop transitions, 3 changer transitions 15/261 dead transitions. [2024-11-13 16:30:32,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 261 transitions, 2081 flow [2024-11-13 16:30:32,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:30:32,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:30:32,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-11-13 16:30:32,167 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-13 16:30:32,167 INFO L175 Difference]: Start difference. First operand has 108 places, 154 transitions, 909 flow. Second operand 4 states and 182 transitions. [2024-11-13 16:30:32,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 261 transitions, 2081 flow [2024-11-13 16:30:32,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 261 transitions, 2033 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-13 16:30:32,182 INFO L231 Difference]: Finished difference. Result has 110 places, 154 transitions, 896 flow [2024-11-13 16:30:32,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=896, PETRI_PLACES=110, PETRI_TRANSITIONS=154} [2024-11-13 16:30:32,184 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 37 predicate places. [2024-11-13 16:30:32,184 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 154 transitions, 896 flow [2024-11-13 16:30:32,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:30:32,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:32,185 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-13 16:30:32,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 16:30:32,185 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:32,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:32,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1198193374, now seen corresponding path program 2 times [2024-11-13 16:30:32,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:32,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670586272] [2024-11-13 16:30:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:32,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:32,403 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 16:30:32,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:32,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670586272] [2024-11-13 16:30:32,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670586272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:30:32,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109901100] [2024-11-13 16:30:32,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:30:32,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:32,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:30:32,407 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:30:32,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 16:30:32,547 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 16:30:32,547 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:30:32,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:30:32,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:30:32,605 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 16:30:32,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:30:32,648 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 16:30:32,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109901100] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:30:32,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:30:32,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-13 16:30:32,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935490000] [2024-11-13 16:30:32,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:30:32,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 16:30:32,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:32,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 16:30:32,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-13 16:30:32,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-13 16:30:32,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 154 transitions, 896 flow. Second operand has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 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 16:30:32,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:32,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-13 16:30:32,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:33,569 INFO L124 PetriNetUnfolderBase]: 1197/2419 cut-off events. [2024-11-13 16:30:33,570 INFO L125 PetriNetUnfolderBase]: For 1857/1857 co-relation queries the response was YES. [2024-11-13 16:30:33,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6868 conditions, 2419 events. 1197/2419 cut-off events. For 1857/1857 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 16358 event pairs, 783 based on Foata normal form. 28/2144 useless extension candidates. Maximal degree in co-relation 6791. Up to 1839 conditions per place. [2024-11-13 16:30:33,587 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 65 selfloop transitions, 90 changer transitions 0/170 dead transitions. [2024-11-13 16:30:33,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 170 transitions, 1305 flow [2024-11-13 16:30:33,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 16:30:33,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-13 16:30:33,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 588 transitions. [2024-11-13 16:30:33,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-11-13 16:30:33,591 INFO L175 Difference]: Start difference. First operand has 110 places, 154 transitions, 896 flow. Second operand 24 states and 588 transitions. [2024-11-13 16:30:33,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 170 transitions, 1305 flow [2024-11-13 16:30:33,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 170 transitions, 1301 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 16:30:33,605 INFO L231 Difference]: Finished difference. Result has 133 places, 170 transitions, 1223 flow [2024-11-13 16:30:33,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1223, PETRI_PLACES=133, PETRI_TRANSITIONS=170} [2024-11-13 16:30:33,606 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 60 predicate places. [2024-11-13 16:30:33,606 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 170 transitions, 1223 flow [2024-11-13 16:30:33,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 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 16:30:33,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:33,606 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:33,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 16:30:33,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 16:30:33,807 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:33,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:33,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1042215553, now seen corresponding path program 1 times [2024-11-13 16:30:33,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:33,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443284881] [2024-11-13 16:30:33,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:33,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:33,955 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 16:30:33,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:33,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443284881] [2024-11-13 16:30:33,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443284881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:33,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:30:33,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:30:33,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261955056] [2024-11-13 16:30:33,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:33,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:30:33,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:33,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:30:33,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:30:33,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-13 16:30:33,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 170 transitions, 1223 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 16:30:33,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:33,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-13 16:30:33,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:34,590 INFO L124 PetriNetUnfolderBase]: 1515/3071 cut-off events. [2024-11-13 16:30:34,591 INFO L125 PetriNetUnfolderBase]: For 2444/2444 co-relation queries the response was YES. [2024-11-13 16:30:34,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8940 conditions, 3071 events. 1515/3071 cut-off events. For 2444/2444 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 21951 event pairs, 1091 based on Foata normal form. 92/2810 useless extension candidates. Maximal degree in co-relation 8861. Up to 2006 conditions per place. [2024-11-13 16:30:34,608 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 173 selfloop transitions, 8 changer transitions 2/201 dead transitions. [2024-11-13 16:30:34,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 201 transitions, 1743 flow [2024-11-13 16:30:34,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:30:34,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:30:34,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-11-13 16:30:34,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5811688311688312 [2024-11-13 16:30:34,610 INFO L175 Difference]: Start difference. First operand has 133 places, 170 transitions, 1223 flow. Second operand 4 states and 179 transitions. [2024-11-13 16:30:34,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 201 transitions, 1743 flow [2024-11-13 16:30:34,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 201 transitions, 1524 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-11-13 16:30:34,627 INFO L231 Difference]: Finished difference. Result has 126 places, 170 transitions, 1053 flow [2024-11-13 16:30:34,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1053, PETRI_PLACES=126, PETRI_TRANSITIONS=170} [2024-11-13 16:30:34,629 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 53 predicate places. [2024-11-13 16:30:34,629 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 170 transitions, 1053 flow [2024-11-13 16:30:34,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 16:30:34,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:34,630 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-11-13 16:30:34,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 16:30:34,630 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:34,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:34,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1657306420, now seen corresponding path program 1 times [2024-11-13 16:30:34,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:34,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404156932] [2024-11-13 16:30:34,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:34,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:34,879 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:30:34,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:34,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404156932] [2024-11-13 16:30:34,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404156932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:30:34,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189120303] [2024-11-13 16:30:34,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:34,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:34,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:30:34,883 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:30:34,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 16:30:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:35,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 16:30:35,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:30:35,110 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:30:35,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:30:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:30:35,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189120303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:30:35,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:30:35,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-13 16:30:35,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573932438] [2024-11-13 16:30:35,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:30:35,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 16:30:35,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:35,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 16:30:35,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-13 16:30:35,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-13 16:30:35,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 170 transitions, 1053 flow. Second operand has 28 states, 28 states have (on average 21.071428571428573) internal successors, (590), 28 states have internal predecessors, (590), 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 16:30:35,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:35,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-13 16:30:35,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:36,887 INFO L124 PetriNetUnfolderBase]: 1704/3827 cut-off events. [2024-11-13 16:30:36,887 INFO L125 PetriNetUnfolderBase]: For 7052/7052 co-relation queries the response was YES. [2024-11-13 16:30:36,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11906 conditions, 3827 events. 1704/3827 cut-off events. For 7052/7052 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 27543 event pairs, 1091 based on Foata normal form. 182/3651 useless extension candidates. Maximal degree in co-relation 11823. Up to 2590 conditions per place. [2024-11-13 16:30:36,910 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 68 selfloop transitions, 206 changer transitions 0/289 dead transitions. [2024-11-13 16:30:36,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 289 transitions, 2511 flow [2024-11-13 16:30:36,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 16:30:36,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-13 16:30:36,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 728 transitions. [2024-11-13 16:30:36,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-11-13 16:30:36,915 INFO L175 Difference]: Start difference. First operand has 126 places, 170 transitions, 1053 flow. Second operand 26 states and 728 transitions. [2024-11-13 16:30:36,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 289 transitions, 2511 flow [2024-11-13 16:30:36,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 289 transitions, 2496 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 16:30:36,944 INFO L231 Difference]: Finished difference. Result has 156 places, 289 transitions, 2488 flow [2024-11-13 16:30:36,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2488, PETRI_PLACES=156, PETRI_TRANSITIONS=289} [2024-11-13 16:30:36,946 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 83 predicate places. [2024-11-13 16:30:36,947 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 289 transitions, 2488 flow [2024-11-13 16:30:36,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 21.071428571428573) internal successors, (590), 28 states have internal predecessors, (590), 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 16:30:36,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:36,947 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:36,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 16:30:37,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:37,148 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:37,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:37,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1343588048, now seen corresponding path program 1 times [2024-11-13 16:30:37,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:37,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823473578] [2024-11-13 16:30:37,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:37,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:30:37,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:37,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823473578] [2024-11-13 16:30:37,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823473578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:30:37,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855303257] [2024-11-13 16:30:37,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:37,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:37,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:30:37,373 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:30:37,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 16:30:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:37,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:30:37,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:30:37,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:30:37,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:30:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:30:37,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855303257] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 16:30:37,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:30:37,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2024-11-13 16:30:37,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111980996] [2024-11-13 16:30:37,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:37,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:30:37,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:37,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:30:37,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:30:37,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-13 16:30:37,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 289 transitions, 2488 flow. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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 16:30:37,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:37,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-13 16:30:37,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:38,394 INFO L124 PetriNetUnfolderBase]: 1702/3825 cut-off events. [2024-11-13 16:30:38,394 INFO L125 PetriNetUnfolderBase]: For 7031/7031 co-relation queries the response was YES. [2024-11-13 16:30:38,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13303 conditions, 3825 events. 1702/3825 cut-off events. For 7031/7031 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 27364 event pairs, 1091 based on Foata normal form. 2/3476 useless extension candidates. Maximal degree in co-relation 13215. Up to 2308 conditions per place. [2024-11-13 16:30:38,418 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 371 selfloop transitions, 37 changer transitions 4/430 dead transitions. [2024-11-13 16:30:38,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 430 transitions, 4666 flow [2024-11-13 16:30:38,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:30:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:30:38,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 208 transitions. [2024-11-13 16:30:38,426 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5402597402597402 [2024-11-13 16:30:38,426 INFO L175 Difference]: Start difference. First operand has 156 places, 289 transitions, 2488 flow. Second operand 5 states and 208 transitions. [2024-11-13 16:30:38,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 430 transitions, 4666 flow [2024-11-13 16:30:38,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 430 transitions, 3595 flow, removed 382 selfloop flow, removed 12 redundant places. [2024-11-13 16:30:38,488 INFO L231 Difference]: Finished difference. Result has 148 places, 288 transitions, 1892 flow [2024-11-13 16:30:38,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1892, PETRI_PLACES=148, PETRI_TRANSITIONS=288} [2024-11-13 16:30:38,489 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 75 predicate places. [2024-11-13 16:30:38,489 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 288 transitions, 1892 flow [2024-11-13 16:30:38,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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 16:30:38,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:38,489 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:38,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 16:30:38,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 16:30:38,690 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:38,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:38,691 INFO L85 PathProgramCache]: Analyzing trace with hash 588032626, now seen corresponding path program 2 times [2024-11-13 16:30:38,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:38,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849943658] [2024-11-13 16:30:38,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:38,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 16:30:38,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:38,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849943658] [2024-11-13 16:30:38,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849943658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:30:38,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164865837] [2024-11-13 16:30:38,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:30:38,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:38,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:30:38,973 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:30:38,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 16:30:39,134 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 16:30:39,135 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:30:39,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:30:39,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:30:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 16:30:39,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:30:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 16:30:39,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164865837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:30:39,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:30:39,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 3, 3] total 12 [2024-11-13 16:30:39,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638657485] [2024-11-13 16:30:39,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:30:39,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 16:30:39,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:39,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 16:30:39,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-13 16:30:39,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2024-11-13 16:30:39,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 288 transitions, 1892 flow. Second operand has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 12 states have internal predecessors, (238), 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 16:30:39,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:39,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2024-11-13 16:30:39,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:40,656 INFO L124 PetriNetUnfolderBase]: 3011/6361 cut-off events. [2024-11-13 16:30:40,656 INFO L125 PetriNetUnfolderBase]: For 6970/6970 co-relation queries the response was YES. [2024-11-13 16:30:40,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19082 conditions, 6361 events. 3011/6361 cut-off events. For 6970/6970 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 49009 event pairs, 2000 based on Foata normal form. 4/5688 useless extension candidates. Maximal degree in co-relation 18997. Up to 2714 conditions per place. [2024-11-13 16:30:40,688 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 310 selfloop transitions, 135 changer transitions 0/459 dead transitions. [2024-11-13 16:30:40,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 459 transitions, 3976 flow [2024-11-13 16:30:40,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 16:30:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-13 16:30:40,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 383 transitions. [2024-11-13 16:30:40,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31087662337662336 [2024-11-13 16:30:40,690 INFO L175 Difference]: Start difference. First operand has 148 places, 288 transitions, 1892 flow. Second operand 16 states and 383 transitions. [2024-11-13 16:30:40,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 459 transitions, 3976 flow [2024-11-13 16:30:40,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 459 transitions, 3914 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-13 16:30:40,758 INFO L231 Difference]: Finished difference. Result has 159 places, 362 transitions, 2817 flow [2024-11-13 16:30:40,759 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2817, PETRI_PLACES=159, PETRI_TRANSITIONS=362} [2024-11-13 16:30:40,759 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 86 predicate places. [2024-11-13 16:30:40,759 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 362 transitions, 2817 flow [2024-11-13 16:30:40,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 12 states have internal predecessors, (238), 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 16:30:40,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:40,760 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:40,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 16:30:40,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 16:30:40,964 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:40,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:40,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1241492732, now seen corresponding path program 1 times [2024-11-13 16:30:40,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:40,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175064587] [2024-11-13 16:30:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:40,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:41,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:30:41,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:41,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175064587] [2024-11-13 16:30:41,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175064587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:41,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:30:41,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:30:41,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635788651] [2024-11-13 16:30:41,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:41,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:30:41,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:41,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:30:41,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:30:41,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-13 16:30:41,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 362 transitions, 2817 flow. Second operand has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 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 16:30:41,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:41,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-13 16:30:41,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:43,087 INFO L124 PetriNetUnfolderBase]: 4440/9717 cut-off events. [2024-11-13 16:30:43,087 INFO L125 PetriNetUnfolderBase]: For 15390/15399 co-relation queries the response was YES. [2024-11-13 16:30:43,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32421 conditions, 9717 events. 4440/9717 cut-off events. For 15390/15399 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 79267 event pairs, 1202 based on Foata normal form. 79/8806 useless extension candidates. Maximal degree in co-relation 29556. Up to 3635 conditions per place. [2024-11-13 16:30:43,133 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 463 selfloop transitions, 35 changer transitions 18/533 dead transitions. [2024-11-13 16:30:43,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 533 transitions, 5181 flow [2024-11-13 16:30:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:30:43,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 16:30:43,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 246 transitions. [2024-11-13 16:30:43,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5324675324675324 [2024-11-13 16:30:43,134 INFO L175 Difference]: Start difference. First operand has 159 places, 362 transitions, 2817 flow. Second operand 6 states and 246 transitions. [2024-11-13 16:30:43,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 533 transitions, 5181 flow [2024-11-13 16:30:43,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 533 transitions, 5146 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-13 16:30:43,425 INFO L231 Difference]: Finished difference. Result has 163 places, 376 transitions, 3069 flow [2024-11-13 16:30:43,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3069, PETRI_PLACES=163, PETRI_TRANSITIONS=376} [2024-11-13 16:30:43,426 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 90 predicate places. [2024-11-13 16:30:43,426 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 376 transitions, 3069 flow [2024-11-13 16:30:43,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 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 16:30:43,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:43,426 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:43,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 16:30:43,426 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:43,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:43,426 INFO L85 PathProgramCache]: Analyzing trace with hash 410376219, now seen corresponding path program 2 times [2024-11-13 16:30:43,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:43,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65460302] [2024-11-13 16:30:43,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:43,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:30:43,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:43,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65460302] [2024-11-13 16:30:43,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65460302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:30:43,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052298826] [2024-11-13 16:30:43,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:30:43,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:43,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:30:43,672 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:30:43,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 16:30:43,862 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 16:30:43,862 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:30:43,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:30:43,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:30:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 16:30:43,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:30:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 16:30:43,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052298826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:30:43,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:30:43,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-13 16:30:43,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949625644] [2024-11-13 16:30:43,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:30:43,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 16:30:43,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:43,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 16:30:43,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-13 16:30:44,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-13 16:30:44,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 376 transitions, 3069 flow. Second operand has 15 states, 15 states have (on average 28.066666666666666) internal successors, (421), 15 states have internal predecessors, (421), 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 16:30:44,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:44,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-13 16:30:44,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:45,939 INFO L124 PetriNetUnfolderBase]: 4025/9777 cut-off events. [2024-11-13 16:30:45,939 INFO L125 PetriNetUnfolderBase]: For 18047/18047 co-relation queries the response was YES. [2024-11-13 16:30:45,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33710 conditions, 9777 events. 4025/9777 cut-off events. For 18047/18047 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 85275 event pairs, 2386 based on Foata normal form. 24/9081 useless extension candidates. Maximal degree in co-relation 30343. Up to 5150 conditions per place. [2024-11-13 16:30:45,986 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 547 selfloop transitions, 120 changer transitions 0/683 dead transitions. [2024-11-13 16:30:45,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 683 transitions, 7030 flow [2024-11-13 16:30:45,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 16:30:45,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 16:30:45,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 464 transitions. [2024-11-13 16:30:45,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4017316017316017 [2024-11-13 16:30:45,989 INFO L175 Difference]: Start difference. First operand has 163 places, 376 transitions, 3069 flow. Second operand 15 states and 464 transitions. [2024-11-13 16:30:45,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 683 transitions, 7030 flow [2024-11-13 16:30:46,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 683 transitions, 6954 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-13 16:30:46,219 INFO L231 Difference]: Finished difference. Result has 171 places, 398 transitions, 3474 flow [2024-11-13 16:30:46,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2985, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3474, PETRI_PLACES=171, PETRI_TRANSITIONS=398} [2024-11-13 16:30:46,220 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 98 predicate places. [2024-11-13 16:30:46,220 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 398 transitions, 3474 flow [2024-11-13 16:30:46,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 28.066666666666666) internal successors, (421), 15 states have internal predecessors, (421), 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 16:30:46,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:46,220 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:46,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 16:30:46,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-13 16:30:46,421 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:46,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:46,421 INFO L85 PathProgramCache]: Analyzing trace with hash 861745714, now seen corresponding path program 1 times [2024-11-13 16:30:46,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:46,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413641675] [2024-11-13 16:30:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:46,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:30:46,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:46,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413641675] [2024-11-13 16:30:46,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413641675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:30:46,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272215193] [2024-11-13 16:30:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:46,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:46,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:30:46,855 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:30:46,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 16:30:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:47,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:30:47,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:30:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:30:47,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:30:47,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272215193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:47,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:30:47,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2024-11-13 16:30:47,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146935161] [2024-11-13 16:30:47,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:47,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:30:47,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:47,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:30:47,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:30:47,124 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-13 16:30:47,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 398 transitions, 3474 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 16:30:47,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:47,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-13 16:30:47,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:48,871 INFO L124 PetriNetUnfolderBase]: 3677/9276 cut-off events. [2024-11-13 16:30:48,872 INFO L125 PetriNetUnfolderBase]: For 18475/18475 co-relation queries the response was YES. [2024-11-13 16:30:48,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33194 conditions, 9276 events. 3677/9276 cut-off events. For 18475/18475 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 81214 event pairs, 2120 based on Foata normal form. 0/8742 useless extension candidates. Maximal degree in co-relation 29758. Up to 7640 conditions per place. [2024-11-13 16:30:48,914 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 380 selfloop transitions, 1 changer transitions 0/397 dead transitions. [2024-11-13 16:30:48,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 397 transitions, 4230 flow [2024-11-13 16:30:48,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:30:48,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:30:48,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-13 16:30:48,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5367965367965368 [2024-11-13 16:30:48,915 INFO L175 Difference]: Start difference. First operand has 171 places, 398 transitions, 3474 flow. Second operand 3 states and 124 transitions. [2024-11-13 16:30:48,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 397 transitions, 4230 flow [2024-11-13 16:30:49,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 397 transitions, 3912 flow, removed 37 selfloop flow, removed 11 redundant places. [2024-11-13 16:30:49,046 INFO L231 Difference]: Finished difference. Result has 161 places, 397 transitions, 3152 flow [2024-11-13 16:30:49,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3150, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3152, PETRI_PLACES=161, PETRI_TRANSITIONS=397} [2024-11-13 16:30:49,046 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 88 predicate places. [2024-11-13 16:30:49,047 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 397 transitions, 3152 flow [2024-11-13 16:30:49,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 16:30:49,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:49,047 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:49,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 16:30:49,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-13 16:30:49,247 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:49,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:49,248 INFO L85 PathProgramCache]: Analyzing trace with hash 861745716, now seen corresponding path program 1 times [2024-11-13 16:30:49,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:49,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17921984] [2024-11-13 16:30:49,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:49,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:30:49,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:49,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17921984] [2024-11-13 16:30:49,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17921984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:49,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:30:49,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:30:49,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170590637] [2024-11-13 16:30:49,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:49,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:30:49,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:49,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:30:49,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:30:49,368 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-13 16:30:49,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 397 transitions, 3152 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 16:30:49,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:49,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-13 16:30:49,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:51,176 INFO L124 PetriNetUnfolderBase]: 5792/12545 cut-off events. [2024-11-13 16:30:51,176 INFO L125 PetriNetUnfolderBase]: For 19106/19155 co-relation queries the response was YES. [2024-11-13 16:30:51,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39899 conditions, 12545 events. 5792/12545 cut-off events. For 19106/19155 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 104854 event pairs, 1284 based on Foata normal form. 111/11838 useless extension candidates. Maximal degree in co-relation 39863. Up to 6030 conditions per place. [2024-11-13 16:30:51,242 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 403 selfloop transitions, 6 changer transitions 4/429 dead transitions. [2024-11-13 16:30:51,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 429 transitions, 4084 flow [2024-11-13 16:30:51,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:30:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:30:51,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2024-11-13 16:30:51,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2024-11-13 16:30:51,244 INFO L175 Difference]: Start difference. First operand has 161 places, 397 transitions, 3152 flow. Second operand 4 states and 189 transitions. [2024-11-13 16:30:51,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 429 transitions, 4084 flow [2024-11-13 16:30:51,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 429 transitions, 4083 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:30:51,379 INFO L231 Difference]: Finished difference. Result has 166 places, 401 transitions, 3211 flow [2024-11-13 16:30:51,379 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3151, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3211, PETRI_PLACES=166, PETRI_TRANSITIONS=401} [2024-11-13 16:30:51,380 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 93 predicate places. [2024-11-13 16:30:51,380 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 401 transitions, 3211 flow [2024-11-13 16:30:51,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 16:30:51,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:51,380 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:51,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 16:30:51,380 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:51,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:51,381 INFO L85 PathProgramCache]: Analyzing trace with hash 387302370, now seen corresponding path program 1 times [2024-11-13 16:30:51,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:51,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321582570] [2024-11-13 16:30:51,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:51,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:30:51,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:51,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321582570] [2024-11-13 16:30:51,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321582570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:30:51,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467610314] [2024-11-13 16:30:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:51,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:51,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:30:51,480 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:30:51,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 16:30:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:51,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:30:51,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:30:51,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:30:51,738 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:30:51,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467610314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:51,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:30:51,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-11-13 16:30:51,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347263036] [2024-11-13 16:30:51,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:51,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:30:51,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:51,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:30:51,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:30:51,744 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-13 16:30:51,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 401 transitions, 3211 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:30:51,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:51,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-13 16:30:51,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:53,754 INFO L124 PetriNetUnfolderBase]: 6198/12967 cut-off events. [2024-11-13 16:30:53,754 INFO L125 PetriNetUnfolderBase]: For 25864/26125 co-relation queries the response was YES. [2024-11-13 16:30:53,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44087 conditions, 12967 events. 6198/12967 cut-off events. For 25864/26125 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 105722 event pairs, 1454 based on Foata normal form. 253/12742 useless extension candidates. Maximal degree in co-relation 44047. Up to 6954 conditions per place. [2024-11-13 16:30:53,817 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 393 selfloop transitions, 8 changer transitions 0/417 dead transitions. [2024-11-13 16:30:53,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 417 transitions, 4075 flow [2024-11-13 16:30:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:30:53,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:30:53,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-11-13 16:30:53,818 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.551948051948052 [2024-11-13 16:30:53,818 INFO L175 Difference]: Start difference. First operand has 166 places, 401 transitions, 3211 flow. Second operand 4 states and 170 transitions. [2024-11-13 16:30:53,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 417 transitions, 4075 flow [2024-11-13 16:30:54,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 417 transitions, 4073 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:30:54,010 INFO L231 Difference]: Finished difference. Result has 169 places, 403 transitions, 3266 flow [2024-11-13 16:30:54,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3193, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3266, PETRI_PLACES=169, PETRI_TRANSITIONS=403} [2024-11-13 16:30:54,011 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 96 predicate places. [2024-11-13 16:30:54,011 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 403 transitions, 3266 flow [2024-11-13 16:30:54,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:30:54,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:54,011 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:54,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 16:30:54,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:54,212 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:54,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:54,212 INFO L85 PathProgramCache]: Analyzing trace with hash 387302364, now seen corresponding path program 1 times [2024-11-13 16:30:54,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:54,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99264791] [2024-11-13 16:30:54,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:54,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:54,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:30:54,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:54,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99264791] [2024-11-13 16:30:54,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99264791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:30:54,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114308684] [2024-11-13 16:30:54,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:54,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:54,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:30:54,308 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:30:54,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 16:30:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:54,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:30:54,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:30:54,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:30:54,643 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:30:54,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114308684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:54,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:30:54,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-13 16:30:54,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916586013] [2024-11-13 16:30:54,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:54,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:30:54,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:54,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:30:54,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:30:54,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-13 16:30:54,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 403 transitions, 3266 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:30:54,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:54,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-13 16:30:54,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:30:56,716 INFO L124 PetriNetUnfolderBase]: 5600/12081 cut-off events. [2024-11-13 16:30:56,716 INFO L125 PetriNetUnfolderBase]: For 35269/36006 co-relation queries the response was YES. [2024-11-13 16:30:56,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43116 conditions, 12081 events. 5600/12081 cut-off events. For 35269/36006 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 99179 event pairs, 1360 based on Foata normal form. 423/12364 useless extension candidates. Maximal degree in co-relation 43073. Up to 6674 conditions per place. [2024-11-13 16:30:56,796 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 391 selfloop transitions, 8 changer transitions 0/415 dead transitions. [2024-11-13 16:30:56,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 415 transitions, 4100 flow [2024-11-13 16:30:56,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:30:56,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:30:56,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-13 16:30:56,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-13 16:30:56,797 INFO L175 Difference]: Start difference. First operand has 169 places, 403 transitions, 3266 flow. Second operand 4 states and 168 transitions. [2024-11-13 16:30:56,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 415 transitions, 4100 flow [2024-11-13 16:30:56,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 415 transitions, 4083 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-13 16:30:56,964 INFO L231 Difference]: Finished difference. Result has 170 places, 402 transitions, 3261 flow [2024-11-13 16:30:56,964 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3245, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3261, PETRI_PLACES=170, PETRI_TRANSITIONS=402} [2024-11-13 16:30:56,965 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 97 predicate places. [2024-11-13 16:30:56,965 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 402 transitions, 3261 flow [2024-11-13 16:30:56,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:30:56,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:30:56,965 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:56,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 16:30:57,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:57,165 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:30:57,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:57,166 INFO L85 PathProgramCache]: Analyzing trace with hash 387302365, now seen corresponding path program 1 times [2024-11-13 16:30:57,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:57,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591656871] [2024-11-13 16:30:57,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:57,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:57,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:30:57,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:57,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591656871] [2024-11-13 16:30:57,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591656871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:30:57,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465921082] [2024-11-13 16:30:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:57,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:57,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:30:57,497 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:30:57,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 16:30:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:57,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:30:57,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:30:57,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:30:57,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:30:57,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:30:57,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465921082] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:30:57,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:30:57,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2024-11-13 16:30:57,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577308041] [2024-11-13 16:30:57,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:30:57,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:30:57,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:57,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:30:57,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:30:58,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-13 16:30:58,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 402 transitions, 3261 flow. Second operand has 9 states, 9 states have (on average 24.22222222222222) internal successors, (218), 9 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 16:30:58,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:30:58,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-13 16:30:58,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:31:00,982 INFO L124 PetriNetUnfolderBase]: 8140/17939 cut-off events. [2024-11-13 16:31:00,982 INFO L125 PetriNetUnfolderBase]: For 55019/55460 co-relation queries the response was YES. [2024-11-13 16:31:01,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61947 conditions, 17939 events. 8140/17939 cut-off events. For 55019/55460 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 161300 event pairs, 3120 based on Foata normal form. 991/18775 useless extension candidates. Maximal degree in co-relation 61903. Up to 6440 conditions per place. [2024-11-13 16:31:01,096 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 472 selfloop transitions, 112 changer transitions 6/603 dead transitions. [2024-11-13 16:31:01,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 603 transitions, 5979 flow [2024-11-13 16:31:01,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:31:01,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 16:31:01,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 267 transitions. [2024-11-13 16:31:01,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3852813852813853 [2024-11-13 16:31:01,097 INFO L175 Difference]: Start difference. First operand has 170 places, 402 transitions, 3261 flow. Second operand 9 states and 267 transitions. [2024-11-13 16:31:01,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 603 transitions, 5979 flow [2024-11-13 16:31:01,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 603 transitions, 5938 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-13 16:31:01,354 INFO L231 Difference]: Finished difference. Result has 174 places, 464 transitions, 4367 flow [2024-11-13 16:31:01,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3211, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4367, PETRI_PLACES=174, PETRI_TRANSITIONS=464} [2024-11-13 16:31:01,354 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 101 predicate places. [2024-11-13 16:31:01,354 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 464 transitions, 4367 flow [2024-11-13 16:31:01,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.22222222222222) internal successors, (218), 9 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 16:31:01,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:31:01,355 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:31:01,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-13 16:31:01,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:31:01,555 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:31:01,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:31:01,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1335792718, now seen corresponding path program 1 times [2024-11-13 16:31:01,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:31:01,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314397002] [2024-11-13 16:31:01,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:31:01,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:31:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:31:01,661 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:31:01,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:31:01,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314397002] [2024-11-13 16:31:01,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314397002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:31:01,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658582411] [2024-11-13 16:31:01,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:31:01,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:31:01,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:31:01,664 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:31:01,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 16:31:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:31:01,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 16:31:01,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:31:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:31:01,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:31:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:31:01,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658582411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:31:01,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:31:01,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-13 16:31:01,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635986952] [2024-11-13 16:31:01,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:31:01,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:31:01,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:31:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:31:01,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:31:02,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-13 16:31:02,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 464 transitions, 4367 flow. Second operand has 9 states, 9 states have (on average 34.666666666666664) internal successors, (312), 9 states have internal predecessors, (312), 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 16:31:02,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:31:02,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-13 16:31:02,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:31:06,198 INFO L124 PetriNetUnfolderBase]: 12726/25215 cut-off events. [2024-11-13 16:31:06,198 INFO L125 PetriNetUnfolderBase]: For 74453/75071 co-relation queries the response was YES. [2024-11-13 16:31:06,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88528 conditions, 25215 events. 12726/25215 cut-off events. For 74453/75071 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 218538 event pairs, 1114 based on Foata normal form. 1318/26385 useless extension candidates. Maximal degree in co-relation 88483. Up to 7346 conditions per place. [2024-11-13 16:31:06,350 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 504 selfloop transitions, 21 changer transitions 0/541 dead transitions. [2024-11-13 16:31:06,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 541 transitions, 5753 flow [2024-11-13 16:31:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:31:06,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 16:31:06,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 335 transitions. [2024-11-13 16:31:06,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5438311688311688 [2024-11-13 16:31:06,352 INFO L175 Difference]: Start difference. First operand has 174 places, 464 transitions, 4367 flow. Second operand 8 states and 335 transitions. [2024-11-13 16:31:06,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 541 transitions, 5753 flow [2024-11-13 16:31:06,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 541 transitions, 5689 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-11-13 16:31:06,628 INFO L231 Difference]: Finished difference. Result has 182 places, 480 transitions, 4557 flow [2024-11-13 16:31:06,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4303, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4557, PETRI_PLACES=182, PETRI_TRANSITIONS=480} [2024-11-13 16:31:06,628 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 109 predicate places. [2024-11-13 16:31:06,628 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 480 transitions, 4557 flow [2024-11-13 16:31:06,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.666666666666664) internal successors, (312), 9 states have internal predecessors, (312), 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 16:31:06,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:31:06,629 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1] [2024-11-13 16:31:06,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 16:31:06,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 16:31:06,829 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:31:06,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:31:06,830 INFO L85 PathProgramCache]: Analyzing trace with hash -383190163, now seen corresponding path program 2 times [2024-11-13 16:31:06,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:31:06,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62285409] [2024-11-13 16:31:06,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:31:06,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:31:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:31:07,461 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:31:07,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:31:07,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62285409] [2024-11-13 16:31:07,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62285409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:31:07,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530086653] [2024-11-13 16:31:07,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:31:07,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:31:07,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:31:07,464 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:31:07,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 16:31:07,659 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 16:31:07,659 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:31:07,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:31:07,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:31:07,774 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 16:31:07,774 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:31:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 16:31:07,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530086653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:31:07,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:31:07,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 3, 3] total 30 [2024-11-13 16:31:07,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556578168] [2024-11-13 16:31:07,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:31:07,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 16:31:07,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:31:07,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 16:31:07,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2024-11-13 16:31:08,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-13 16:31:08,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 480 transitions, 4557 flow. Second operand has 31 states, 31 states have (on average 21.096774193548388) internal successors, (654), 31 states have internal predecessors, (654), 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 16:31:08,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:31:08,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-13 16:31:08,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:31:13,969 INFO L124 PetriNetUnfolderBase]: 12783/25649 cut-off events. [2024-11-13 16:31:13,969 INFO L125 PetriNetUnfolderBase]: For 113240/114040 co-relation queries the response was YES. [2024-11-13 16:31:14,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97846 conditions, 25649 events. 12783/25649 cut-off events. For 113240/114040 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 223963 event pairs, 7090 based on Foata normal form. 246/25781 useless extension candidates. Maximal degree in co-relation 97795. Up to 18452 conditions per place. [2024-11-13 16:31:14,182 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 94 selfloop transitions, 399 changer transitions 0/506 dead transitions. [2024-11-13 16:31:14,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 506 transitions, 5758 flow [2024-11-13 16:31:14,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-13 16:31:14,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-13 16:31:14,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1335 transitions. [2024-11-13 16:31:14,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3041695146958305 [2024-11-13 16:31:14,185 INFO L175 Difference]: Start difference. First operand has 182 places, 480 transitions, 4557 flow. Second operand 57 states and 1335 transitions. [2024-11-13 16:31:14,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 506 transitions, 5758 flow [2024-11-13 16:31:14,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 506 transitions, 5718 flow, removed 20 selfloop flow, removed 0 redundant places. [2024-11-13 16:31:14,566 INFO L231 Difference]: Finished difference. Result has 239 places, 506 transitions, 5609 flow [2024-11-13 16:31:14,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4491, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=372, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=5609, PETRI_PLACES=239, PETRI_TRANSITIONS=506} [2024-11-13 16:31:14,567 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 166 predicate places. [2024-11-13 16:31:14,567 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 506 transitions, 5609 flow [2024-11-13 16:31:14,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 21.096774193548388) internal successors, (654), 31 states have internal predecessors, (654), 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 16:31:14,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:31:14,568 INFO L204 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 1, 1, 1, 1] [2024-11-13 16:31:14,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 16:31:14,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 16:31:14,768 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:31:14,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:31:14,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2110511798, now seen corresponding path program 1 times [2024-11-13 16:31:14,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:31:14,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274822995] [2024-11-13 16:31:14,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:31:14,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:31:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:31:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:31:15,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:31:15,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274822995] [2024-11-13 16:31:15,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274822995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:31:15,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490256140] [2024-11-13 16:31:15,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:31:15,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:31:15,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:31:15,434 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:31:15,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 16:31:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:31:15,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 16:31:15,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:31:15,789 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:31:15,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:31:16,643 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:31:16,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490256140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:31:16,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:31:16,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 59 [2024-11-13 16:31:16,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953930984] [2024-11-13 16:31:16,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:31:16,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-13 16:31:16,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:31:16,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-13 16:31:16,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 16:31:16,868 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-11-13 16:31:16,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 506 transitions, 5609 flow. Second operand has 60 states, 60 states have (on average 21.05) internal successors, (1263), 60 states have internal predecessors, (1263), 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 16:31:16,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:31:16,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-11-13 16:31:16,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:31:25,526 INFO L124 PetriNetUnfolderBase]: 14538/32669 cut-off events. [2024-11-13 16:31:25,526 INFO L125 PetriNetUnfolderBase]: For 319993/320729 co-relation queries the response was YES. [2024-11-13 16:31:25,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140098 conditions, 32669 events. 14538/32669 cut-off events. For 319993/320729 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 294145 event pairs, 7090 based on Foata normal form. 1838/34393 useless extension candidates. Maximal degree in co-relation 140043. Up to 20172 conditions per place. [2024-11-13 16:31:25,837 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 99 selfloop transitions, 799 changer transitions 0/911 dead transitions. [2024-11-13 16:31:25,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 911 transitions, 11830 flow [2024-11-13 16:31:25,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-13 16:31:25,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2024-11-13 16:31:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1561 transitions. [2024-11-13 16:31:25,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3495297805642633 [2024-11-13 16:31:25,843 INFO L175 Difference]: Start difference. First operand has 239 places, 506 transitions, 5609 flow. Second operand 58 states and 1561 transitions. [2024-11-13 16:31:25,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 911 transitions, 11830 flow [2024-11-13 16:31:26,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 911 transitions, 10922 flow, removed 137 selfloop flow, removed 21 redundant places. [2024-11-13 16:31:26,416 INFO L231 Difference]: Finished difference. Result has 290 places, 911 transitions, 11074 flow [2024-11-13 16:31:26,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4926, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=419, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=11074, PETRI_PLACES=290, PETRI_TRANSITIONS=911} [2024-11-13 16:31:26,417 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 217 predicate places. [2024-11-13 16:31:26,417 INFO L471 AbstractCegarLoop]: Abstraction has has 290 places, 911 transitions, 11074 flow [2024-11-13 16:31:26,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 21.05) internal successors, (1263), 60 states have internal predecessors, (1263), 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 16:31:26,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:31:26,418 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:31:26,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 16:31:26,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 16:31:26,618 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-13 16:31:26,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:31:26,619 INFO L85 PathProgramCache]: Analyzing trace with hash -151810310, now seen corresponding path program 2 times [2024-11-13 16:31:26,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:31:26,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126844583] [2024-11-13 16:31:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:31:26,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:31:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:31:26,902 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:31:26,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:31:26,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126844583] [2024-11-13 16:31:26,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126844583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:31:26,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086402474] [2024-11-13 16:31:26,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:31:26,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:31:26,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:31:26,905 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:31:26,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_475a7dbc-183d-450e-88e2-3c62db76f3b8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 16:31:27,192 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:31:27,193 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:31:27,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 16:31:27,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:31:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:31:27,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:31:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:31:27,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086402474] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:31:27,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:31:27,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-13 16:31:27,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135996083] [2024-11-13 16:31:27,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:31:27,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 16:31:27,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:31:27,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 16:31:27,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-13 16:31:27,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 77 [2024-11-13 16:31:27,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 911 transitions, 11074 flow. Second operand has 17 states, 17 states have (on average 32.94117647058823) internal successors, (560), 17 states have internal predecessors, (560), 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 16:31:27,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:31:27,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 77 [2024-11-13 16:31:27,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand