./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:17:22,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:17:22,955 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-24 00:17:22,965 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:17:22,965 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:17:23,003 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:17:23,004 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:17:23,004 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:17:23,004 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:17:23,005 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:17:23,006 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:17:23,006 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:17:23,006 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:17:23,007 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:17:23,008 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:17:23,008 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:17:23,008 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:17:23,009 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:17:23,009 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:17:23,009 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:17:23,009 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:17:23,009 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:17:23,009 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:17:23,010 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:17:23,010 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 00:17:23,010 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 00:17:23,010 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:17:23,010 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:17:23,010 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:17:23,010 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:17:23,011 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:17:23,011 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:17:23,012 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:17:23,012 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:17:23,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:17:23,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:17:23,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:17:23,012 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:17:23,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:17:23,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:17:23,013 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:17:23,013 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:17:23,013 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:17:23,013 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:17:23,013 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:17:23,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:17:23,014 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:17:23,014 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:17:23,014 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:17:23,014 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:17:23,014 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_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2024-11-24 00:17:23,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:17:23,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:17:23,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:17:23,346 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:17:23,346 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:17:23,348 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-11-24 00:17:26,330 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/data/4e0a32ce4/0e4faa5ee5f64292bb63d80723d5b194/FLAG3ab5dbd04 [2024-11-24 00:17:26,638 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:17:26,639 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-11-24 00:17:26,650 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/data/4e0a32ce4/0e4faa5ee5f64292bb63d80723d5b194/FLAG3ab5dbd04 [2024-11-24 00:17:26,894 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/data/4e0a32ce4/0e4faa5ee5f64292bb63d80723d5b194 [2024-11-24 00:17:26,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:17:26,897 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:17:26,899 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:17:26,899 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:17:26,903 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:17:26,904 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:17:26" (1/1) ... [2024-11-24 00:17:26,905 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c86090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:26, skipping insertion in model container [2024-11-24 00:17:26,907 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:17:26" (1/1) ... [2024-11-24 00:17:26,929 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:17:27,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:17:27,115 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:17:27,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:17:27,161 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:17:27,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:27 WrapperNode [2024-11-24 00:17:27,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:17:27,163 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:17:27,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:17:27,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:17:27,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:27" (1/1) ... [2024-11-24 00:17:27,178 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:27" (1/1) ... [2024-11-24 00:17:27,210 INFO L138 Inliner]: procedures = 24, calls = 49, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 343 [2024-11-24 00:17:27,211 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:17:27,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:17:27,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:17:27,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:17:27,221 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:27" (1/1) ... [2024-11-24 00:17:27,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:27" (1/1) ... [2024-11-24 00:17:27,229 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:27" (1/1) ... [2024-11-24 00:17:27,246 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-24 00:17:27,246 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:27" (1/1) ... [2024-11-24 00:17:27,246 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:27" (1/1) ... [2024-11-24 00:17:27,261 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:27" (1/1) ... [2024-11-24 00:17:27,262 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:27" (1/1) ... [2024-11-24 00:17:27,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:27" (1/1) ... [2024-11-24 00:17:27,276 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:27" (1/1) ... [2024-11-24 00:17:27,278 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:27" (1/1) ... [2024-11-24 00:17:27,281 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:17:27,282 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:17:27,282 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:17:27,282 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:17:27,287 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:27" (1/1) ... [2024-11-24 00:17:27,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:17:27,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:27,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:17:27,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:17:27,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:17:27,348 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-24 00:17:27,348 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-24 00:17:27,348 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-24 00:17:27,348 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-24 00:17:27,348 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-24 00:17:27,349 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-24 00:17:27,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:17:27,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:17:27,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:17:27,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:17:27,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-24 00:17:27,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-24 00:17:27,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 00:17:27,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:17:27,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:17:27,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:17:27,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:17:27,351 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 00:17:27,501 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:17:27,503 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:17:28,183 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 00:17:28,184 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:17:28,807 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:17:28,807 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-24 00:17:28,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:17:28 BoogieIcfgContainer [2024-11-24 00:17:28,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:17:28,810 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:17:28,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:17:28,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:17:28,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:17:26" (1/3) ... [2024-11-24 00:17:28,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff2cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:17:28, skipping insertion in model container [2024-11-24 00:17:28,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:27" (2/3) ... [2024-11-24 00:17:28,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff2cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:17:28, skipping insertion in model container [2024-11-24 00:17:28,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:17:28" (3/3) ... [2024-11-24 00:17:28,820 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2024-11-24 00:17:28,838 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:17:28,840 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-ring-nondet.wvr.c that has 4 procedures, 81 locations, 1 initial locations, 6 loop locations, and 32 error locations. [2024-11-24 00:17:28,841 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 00:17:28,979 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-24 00:17:29,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 92 transitions, 205 flow [2024-11-24 00:17:29,096 INFO L124 PetriNetUnfolderBase]: 12/89 cut-off events. [2024-11-24 00:17:29,098 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-24 00:17:29,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 89 events. 12/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 338 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2024-11-24 00:17:29,107 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 92 transitions, 205 flow [2024-11-24 00:17:29,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 87 transitions, 189 flow [2024-11-24 00:17:29,127 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:17:29,144 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;@1e65be45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:17:29,144 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-11-24 00:17:29,147 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 00:17:29,147 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-24 00:17:29,147 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 00:17:29,148 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:17:29,148 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-24 00:17:29,148 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:17:29,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:29,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1061069, now seen corresponding path program 1 times [2024-11-24 00:17:29,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:29,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117449522] [2024-11-24 00:17:29,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:29,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:29,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:29,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117449522] [2024-11-24 00:17:29,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117449522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:29,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:29,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:17:29,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765922516] [2024-11-24 00:17:29,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:29,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:17:29,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:29,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:17:29,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:17:29,604 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 92 [2024-11-24 00:17:29,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 87 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:29,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:17:29,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 92 [2024-11-24 00:17:29,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:17:32,360 INFO L124 PetriNetUnfolderBase]: 9136/14555 cut-off events. [2024-11-24 00:17:32,361 INFO L125 PetriNetUnfolderBase]: For 433/433 co-relation queries the response was YES. [2024-11-24 00:17:32,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27645 conditions, 14555 events. 9136/14555 cut-off events. For 433/433 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 104718 event pairs, 8468 based on Foata normal form. 3/8543 useless extension candidates. Maximal degree in co-relation 26872. Up to 12592 conditions per place. [2024-11-24 00:17:32,538 INFO L140 encePairwiseOnDemand]: 66/92 looper letters, 58 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2024-11-24 00:17:32,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 323 flow [2024-11-24 00:17:32,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:17:32,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:17:32,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-24 00:17:32,559 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-11-24 00:17:32,561 INFO L175 Difference]: Start difference. First operand has 85 places, 87 transitions, 189 flow. Second operand 4 states and 168 transitions. [2024-11-24 00:17:32,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 323 flow [2024-11-24 00:17:32,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 314 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-24 00:17:32,602 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 248 flow [2024-11-24 00:17:32,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2024-11-24 00:17:32,610 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, -5 predicate places. [2024-11-24 00:17:32,611 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 248 flow [2024-11-24 00:17:32,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:32,612 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:17:32,612 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-24 00:17:32,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:17:32,613 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:17:32,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:32,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1546550448, now seen corresponding path program 1 times [2024-11-24 00:17:32,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:32,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746938743] [2024-11-24 00:17:32,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:32,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:32,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:32,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:32,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746938743] [2024-11-24 00:17:32,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746938743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:17:32,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683243734] [2024-11-24 00:17:32,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:32,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:32,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:32,881 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:17:32,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:17:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:33,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:17:33,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:17:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:33,073 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:17:33,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683243734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:33,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:17:33,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 00:17:33,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457692660] [2024-11-24 00:17:33,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:33,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:17:33,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:33,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:17:33,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:17:33,112 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 92 [2024-11-24 00:17:33,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:33,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:17:33,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 92 [2024-11-24 00:17:33,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:17:35,164 INFO L124 PetriNetUnfolderBase]: 9136/14552 cut-off events. [2024-11-24 00:17:35,165 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-11-24 00:17:35,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27543 conditions, 14552 events. 9136/14552 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 104728 event pairs, 8468 based on Foata normal form. 3/8545 useless extension candidates. Maximal degree in co-relation 27470. Up to 12577 conditions per place. [2024-11-24 00:17:35,291 INFO L140 encePairwiseOnDemand]: 79/92 looper letters, 48 selfloop transitions, 17 changer transitions 0/83 dead transitions. [2024-11-24 00:17:35,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 83 transitions, 366 flow [2024-11-24 00:17:35,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:17:35,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:17:35,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-11-24 00:17:35,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35144927536231885 [2024-11-24 00:17:35,295 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 248 flow. Second operand 6 states and 194 transitions. [2024-11-24 00:17:35,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 83 transitions, 366 flow [2024-11-24 00:17:35,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 83 transitions, 366 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 00:17:35,299 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 270 flow [2024-11-24 00:17:35,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2024-11-24 00:17:35,300 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, -3 predicate places. [2024-11-24 00:17:35,300 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 270 flow [2024-11-24 00:17:35,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:35,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:17:35,301 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-24 00:17:35,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:17:35,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:35,505 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:17:35,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:35,506 INFO L85 PathProgramCache]: Analyzing trace with hash 698424654, now seen corresponding path program 1 times [2024-11-24 00:17:35,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:35,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242717318] [2024-11-24 00:17:35,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:35,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:35,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:35,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:35,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242717318] [2024-11-24 00:17:35,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242717318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:17:35,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344061882] [2024-11-24 00:17:35,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:35,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:35,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:35,737 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:17:35,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:17:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:35,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:17:35,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:17:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:35,886 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:17:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:35,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344061882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:17:35,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:17:35,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-24 00:17:35,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987617826] [2024-11-24 00:17:35,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:17:35,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:17:35,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:35,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:17:35,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:17:36,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 92 [2024-11-24 00:17:36,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 270 flow. Second operand has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:36,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:17:36,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 92 [2024-11-24 00:17:36,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:17:38,011 INFO L124 PetriNetUnfolderBase]: 9145/14588 cut-off events. [2024-11-24 00:17:38,012 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2024-11-24 00:17:38,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27684 conditions, 14588 events. 9145/14588 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 105139 event pairs, 8468 based on Foata normal form. 9/8587 useless extension candidates. Maximal degree in co-relation 27472. Up to 12592 conditions per place. [2024-11-24 00:17:38,098 INFO L140 encePairwiseOnDemand]: 79/92 looper letters, 55 selfloop transitions, 37 changer transitions 0/110 dead transitions. [2024-11-24 00:17:38,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 110 transitions, 628 flow [2024-11-24 00:17:38,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:17:38,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-24 00:17:38,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 311 transitions. [2024-11-24 00:17:38,102 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33804347826086956 [2024-11-24 00:17:38,102 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 270 flow. Second operand 10 states and 311 transitions. [2024-11-24 00:17:38,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 110 transitions, 628 flow [2024-11-24 00:17:38,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 110 transitions, 545 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-24 00:17:38,109 INFO L231 Difference]: Finished difference. Result has 89 places, 110 transitions, 485 flow [2024-11-24 00:17:38,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=485, PETRI_PLACES=89, PETRI_TRANSITIONS=110} [2024-11-24 00:17:38,111 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 4 predicate places. [2024-11-24 00:17:38,112 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 110 transitions, 485 flow [2024-11-24 00:17:38,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:38,112 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:17:38,112 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:38,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:17:38,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:38,313 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:17:38,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:38,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1312750334, now seen corresponding path program 1 times [2024-11-24 00:17:38,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:38,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218434792] [2024-11-24 00:17:38,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:38,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:38,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:38,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:38,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218434792] [2024-11-24 00:17:38,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218434792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:38,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:38,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:17:38,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268697377] [2024-11-24 00:17:38,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:38,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:17:38,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:38,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:17:38,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:17:38,607 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-24 00:17:38,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 110 transitions, 485 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:38,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:17:38,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-24 00:17:38,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:17:39,781 INFO L124 PetriNetUnfolderBase]: 9373/15035 cut-off events. [2024-11-24 00:17:39,781 INFO L125 PetriNetUnfolderBase]: For 271/271 co-relation queries the response was YES. [2024-11-24 00:17:39,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28623 conditions, 15035 events. 9373/15035 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 107942 event pairs, 8675 based on Foata normal form. 112/9074 useless extension candidates. Maximal degree in co-relation 28465. Up to 12618 conditions per place. [2024-11-24 00:17:39,864 INFO L140 encePairwiseOnDemand]: 84/92 looper letters, 133 selfloop transitions, 3 changer transitions 1/158 dead transitions. [2024-11-24 00:17:39,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 158 transitions, 1011 flow [2024-11-24 00:17:39,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:17:39,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:17:39,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2024-11-24 00:17:39,867 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5244565217391305 [2024-11-24 00:17:39,867 INFO L175 Difference]: Start difference. First operand has 89 places, 110 transitions, 485 flow. Second operand 4 states and 193 transitions. [2024-11-24 00:17:39,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 158 transitions, 1011 flow [2024-11-24 00:17:39,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 158 transitions, 951 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-24 00:17:39,873 INFO L231 Difference]: Finished difference. Result has 91 places, 110 transitions, 465 flow [2024-11-24 00:17:39,873 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=465, PETRI_PLACES=91, PETRI_TRANSITIONS=110} [2024-11-24 00:17:39,874 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 6 predicate places. [2024-11-24 00:17:39,874 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 110 transitions, 465 flow [2024-11-24 00:17:39,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:39,874 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:17:39,875 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:39,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:17:39,875 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:17:39,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:39,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1943936500, now seen corresponding path program 1 times [2024-11-24 00:17:39,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:39,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789333535] [2024-11-24 00:17:39,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:39,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:40,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:40,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:40,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789333535] [2024-11-24 00:17:40,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789333535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:40,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:40,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:17:40,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777667063] [2024-11-24 00:17:40,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:40,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:17:40,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:40,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:17:40,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:17:40,010 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-24 00:17:40,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 110 transitions, 465 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:40,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:17:40,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-24 00:17:40,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:17:41,640 INFO L124 PetriNetUnfolderBase]: 9015/14227 cut-off events. [2024-11-24 00:17:41,640 INFO L125 PetriNetUnfolderBase]: For 1083/1083 co-relation queries the response was YES. [2024-11-24 00:17:41,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29324 conditions, 14227 events. 9015/14227 cut-off events. For 1083/1083 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 99555 event pairs, 3351 based on Foata normal form. 257/8621 useless extension candidates. Maximal degree in co-relation 29172. Up to 10420 conditions per place. [2024-11-24 00:17:41,746 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 115 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2024-11-24 00:17:41,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 138 transitions, 768 flow [2024-11-24 00:17:41,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:17:41,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:17:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2024-11-24 00:17:41,749 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-11-24 00:17:41,749 INFO L175 Difference]: Start difference. First operand has 91 places, 110 transitions, 465 flow. Second operand 3 states and 164 transitions. [2024-11-24 00:17:41,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 138 transitions, 768 flow [2024-11-24 00:17:41,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 138 transitions, 764 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-24 00:17:41,762 INFO L231 Difference]: Finished difference. Result has 93 places, 111 transitions, 475 flow [2024-11-24 00:17:41,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=475, PETRI_PLACES=93, PETRI_TRANSITIONS=111} [2024-11-24 00:17:41,763 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 8 predicate places. [2024-11-24 00:17:41,763 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 111 transitions, 475 flow [2024-11-24 00:17:41,764 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) [2024-11-24 00:17:41,764 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:17:41,764 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:41,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:17:41,764 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:17:41,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:41,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1404282107, now seen corresponding path program 1 times [2024-11-24 00:17:41,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:41,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180246405] [2024-11-24 00:17:41,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:41,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:42,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:42,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180246405] [2024-11-24 00:17:42,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180246405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:17:42,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863415970] [2024-11-24 00:17:42,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:42,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:42,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:42,205 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:17:42,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:17:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:42,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:17:42,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:17:42,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:17:42,380 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:17:42,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863415970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:42,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:17:42,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-24 00:17:42,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730074736] [2024-11-24 00:17:42,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:42,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:17:42,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:42,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:17:42,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:17:42,382 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-24 00:17:42,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 111 transitions, 475 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:42,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:17:42,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-24 00:17:42,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:17:43,441 INFO L124 PetriNetUnfolderBase]: 7559/12125 cut-off events. [2024-11-24 00:17:43,442 INFO L125 PetriNetUnfolderBase]: For 1489/1489 co-relation queries the response was YES. [2024-11-24 00:17:43,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25129 conditions, 12125 events. 7559/12125 cut-off events. For 1489/1489 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 83499 event pairs, 6662 based on Foata normal form. 0/8026 useless extension candidates. Maximal degree in co-relation 24976. Up to 10498 conditions per place. [2024-11-24 00:17:43,493 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 87 selfloop transitions, 1 changer transitions 0/109 dead transitions. [2024-11-24 00:17:43,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 109 transitions, 643 flow [2024-11-24 00:17:43,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:17:43,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:17:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-11-24 00:17:43,495 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2024-11-24 00:17:43,495 INFO L175 Difference]: Start difference. First operand has 93 places, 111 transitions, 475 flow. Second operand 3 states and 134 transitions. [2024-11-24 00:17:43,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 109 transitions, 643 flow [2024-11-24 00:17:43,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 109 transitions, 641 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:17:43,500 INFO L231 Difference]: Finished difference. Result has 92 places, 109 transitions, 467 flow [2024-11-24 00:17:43,500 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=467, PETRI_PLACES=92, PETRI_TRANSITIONS=109} [2024-11-24 00:17:43,501 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 7 predicate places. [2024-11-24 00:17:43,501 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 109 transitions, 467 flow [2024-11-24 00:17:43,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:43,502 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:17:43,502 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:43,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:17:43,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-24 00:17:43,706 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:17:43,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:43,707 INFO L85 PathProgramCache]: Analyzing trace with hash 891643794, now seen corresponding path program 1 times [2024-11-24 00:17:43,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:43,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655993713] [2024-11-24 00:17:43,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:43,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:43,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:17:43,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:43,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655993713] [2024-11-24 00:17:43,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655993713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:43,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:43,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:17:43,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194171069] [2024-11-24 00:17:43,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:43,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:17:43,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:43,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:17:43,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:17:43,813 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-24 00:17:43,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 109 transitions, 467 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:43,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:17:43,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-24 00:17:43,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:17:44,672 INFO L124 PetriNetUnfolderBase]: 7064/11388 cut-off events. [2024-11-24 00:17:44,672 INFO L125 PetriNetUnfolderBase]: For 1434/1446 co-relation queries the response was YES. [2024-11-24 00:17:44,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23525 conditions, 11388 events. 7064/11388 cut-off events. For 1434/1446 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 76339 event pairs, 3519 based on Foata normal form. 69/7576 useless extension candidates. Maximal degree in co-relation 23508. Up to 9321 conditions per place. [2024-11-24 00:17:44,729 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 104 selfloop transitions, 5 changer transitions 0/130 dead transitions. [2024-11-24 00:17:44,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 130 transitions, 734 flow [2024-11-24 00:17:44,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:17:44,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:17:44,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2024-11-24 00:17:44,731 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2024-11-24 00:17:44,731 INFO L175 Difference]: Start difference. First operand has 92 places, 109 transitions, 467 flow. Second operand 3 states and 154 transitions. [2024-11-24 00:17:44,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 130 transitions, 734 flow [2024-11-24 00:17:44,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 130 transitions, 733 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:17:44,737 INFO L231 Difference]: Finished difference. Result has 94 places, 113 transitions, 501 flow [2024-11-24 00:17:44,737 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=501, PETRI_PLACES=94, PETRI_TRANSITIONS=113} [2024-11-24 00:17:44,738 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2024-11-24 00:17:44,738 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 113 transitions, 501 flow [2024-11-24 00:17:44,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:44,738 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:17:44,738 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:44,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:17:44,739 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:17:44,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:44,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1986871037, now seen corresponding path program 1 times [2024-11-24 00:17:44,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:44,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201344477] [2024-11-24 00:17:44,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:44,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:17:44,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:44,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201344477] [2024-11-24 00:17:44,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201344477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:44,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:44,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:17:44,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293198882] [2024-11-24 00:17:44,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:44,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:17:44,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:44,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:17:44,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:17:44,811 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-24 00:17:44,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 113 transitions, 501 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:44,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:17:44,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-24 00:17:44,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:17:45,905 INFO L124 PetriNetUnfolderBase]: 7894/12772 cut-off events. [2024-11-24 00:17:45,905 INFO L125 PetriNetUnfolderBase]: For 2999/2999 co-relation queries the response was YES. [2024-11-24 00:17:45,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27754 conditions, 12772 events. 7894/12772 cut-off events. For 2999/2999 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 88689 event pairs, 6314 based on Foata normal form. 0/8819 useless extension candidates. Maximal degree in co-relation 27735. Up to 9397 conditions per place. [2024-11-24 00:17:45,972 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 124 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2024-11-24 00:17:45,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 147 transitions, 834 flow [2024-11-24 00:17:45,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:17:45,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:17:45,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2024-11-24 00:17:45,974 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6195652173913043 [2024-11-24 00:17:45,974 INFO L175 Difference]: Start difference. First operand has 94 places, 113 transitions, 501 flow. Second operand 3 states and 171 transitions. [2024-11-24 00:17:45,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 147 transitions, 834 flow [2024-11-24 00:17:45,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 147 transitions, 831 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:17:45,980 INFO L231 Difference]: Finished difference. Result has 95 places, 111 transitions, 492 flow [2024-11-24 00:17:45,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=95, PETRI_TRANSITIONS=111} [2024-11-24 00:17:45,981 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 10 predicate places. [2024-11-24 00:17:45,981 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 111 transitions, 492 flow [2024-11-24 00:17:45,982 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) [2024-11-24 00:17:45,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:17:45,982 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:45,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:17:45,982 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:17:45,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:45,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1986871035, now seen corresponding path program 1 times [2024-11-24 00:17:45,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:45,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743173898] [2024-11-24 00:17:45,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:45,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:46,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:17:46,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:46,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743173898] [2024-11-24 00:17:46,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743173898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:46,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:46,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:17:46,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905865210] [2024-11-24 00:17:46,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:46,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:17:46,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:46,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:17:46,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:17:46,080 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-24 00:17:46,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 111 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:46,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:17:46,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-24 00:17:46,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:17:47,071 INFO L124 PetriNetUnfolderBase]: 7476/12170 cut-off events. [2024-11-24 00:17:47,071 INFO L125 PetriNetUnfolderBase]: For 2927/2963 co-relation queries the response was YES. [2024-11-24 00:17:47,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26467 conditions, 12170 events. 7476/12170 cut-off events. For 2927/2963 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 83909 event pairs, 4116 based on Foata normal form. 0/8523 useless extension candidates. Maximal degree in co-relation 26448. Up to 10362 conditions per place. [2024-11-24 00:17:47,126 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 91 selfloop transitions, 8 changer transitions 0/120 dead transitions. [2024-11-24 00:17:47,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 120 transitions, 717 flow [2024-11-24 00:17:47,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:17:47,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:17:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2024-11-24 00:17:47,128 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2024-11-24 00:17:47,128 INFO L175 Difference]: Start difference. First operand has 95 places, 111 transitions, 492 flow. Second operand 3 states and 142 transitions. [2024-11-24 00:17:47,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 120 transitions, 717 flow [2024-11-24 00:17:47,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 120 transitions, 715 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:17:47,135 INFO L231 Difference]: Finished difference. Result has 96 places, 112 transitions, 526 flow [2024-11-24 00:17:47,136 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=526, PETRI_PLACES=96, PETRI_TRANSITIONS=112} [2024-11-24 00:17:47,136 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 11 predicate places. [2024-11-24 00:17:47,137 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 112 transitions, 526 flow [2024-11-24 00:17:47,137 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) [2024-11-24 00:17:47,137 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:17:47,137 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:47,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:17:47,138 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:17:47,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:47,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1986871036, now seen corresponding path program 1 times [2024-11-24 00:17:47,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:47,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914927842] [2024-11-24 00:17:47,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:47,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:47,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:47,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:47,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914927842] [2024-11-24 00:17:47,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914927842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:17:47,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210265927] [2024-11-24 00:17:47,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:47,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:47,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:47,321 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:17:47,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:17:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:47,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:17:47,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:17:47,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:17:47,527 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:17:47,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210265927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:47,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:17:47,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-11-24 00:17:47,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97085873] [2024-11-24 00:17:47,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:47,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:17:47,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:47,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:17:47,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:17:47,533 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-24 00:17:47,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 112 transitions, 526 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:47,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:17:47,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-24 00:17:47,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:17:48,774 INFO L124 PetriNetUnfolderBase]: 7728/12778 cut-off events. [2024-11-24 00:17:48,774 INFO L125 PetriNetUnfolderBase]: For 4128/4160 co-relation queries the response was YES. [2024-11-24 00:17:48,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28462 conditions, 12778 events. 7728/12778 cut-off events. For 4128/4160 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 88911 event pairs, 3366 based on Foata normal form. 206/9421 useless extension candidates. Maximal degree in co-relation 28441. Up to 5774 conditions per place. [2024-11-24 00:17:48,837 INFO L140 encePairwiseOnDemand]: 84/92 looper letters, 102 selfloop transitions, 14 changer transitions 0/137 dead transitions. [2024-11-24 00:17:48,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 137 transitions, 831 flow [2024-11-24 00:17:48,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:17:48,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:17:48,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-11-24 00:17:48,839 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49728260869565216 [2024-11-24 00:17:48,839 INFO L175 Difference]: Start difference. First operand has 96 places, 112 transitions, 526 flow. Second operand 4 states and 183 transitions. [2024-11-24 00:17:48,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 137 transitions, 831 flow [2024-11-24 00:17:48,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 137 transitions, 823 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:17:48,844 INFO L231 Difference]: Finished difference. Result has 99 places, 113 transitions, 587 flow [2024-11-24 00:17:48,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=587, PETRI_PLACES=99, PETRI_TRANSITIONS=113} [2024-11-24 00:17:48,845 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 14 predicate places. [2024-11-24 00:17:48,845 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 113 transitions, 587 flow [2024-11-24 00:17:48,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:48,845 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:17:48,845 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:48,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:17:49,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 00:17:49,046 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:17:49,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:49,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1463462145, now seen corresponding path program 1 times [2024-11-24 00:17:49,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:49,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244955664] [2024-11-24 00:17:49,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:49,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:17:49,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:49,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244955664] [2024-11-24 00:17:49,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244955664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:49,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:49,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:17:49,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773579022] [2024-11-24 00:17:49,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:49,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:17:49,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:49,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:17:49,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:17:49,174 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-24 00:17:49,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 113 transitions, 587 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:49,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:17:49,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-24 00:17:49,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:17:51,253 INFO L124 PetriNetUnfolderBase]: 11655/18505 cut-off events. [2024-11-24 00:17:51,253 INFO L125 PetriNetUnfolderBase]: For 15722/15782 co-relation queries the response was YES. [2024-11-24 00:17:51,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46905 conditions, 18505 events. 11655/18505 cut-off events. For 15722/15782 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 129737 event pairs, 9549 based on Foata normal form. 302/13900 useless extension candidates. Maximal degree in co-relation 46881. Up to 11674 conditions per place. [2024-11-24 00:17:51,356 INFO L140 encePairwiseOnDemand]: 81/92 looper letters, 121 selfloop transitions, 7 changer transitions 0/149 dead transitions. [2024-11-24 00:17:51,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 149 transitions, 1011 flow [2024-11-24 00:17:51,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:17:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:17:51,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2024-11-24 00:17:51,358 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5353260869565217 [2024-11-24 00:17:51,358 INFO L175 Difference]: Start difference. First operand has 99 places, 113 transitions, 587 flow. Second operand 4 states and 197 transitions. [2024-11-24 00:17:51,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 149 transitions, 1011 flow [2024-11-24 00:17:51,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 149 transitions, 1010 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:17:51,372 INFO L231 Difference]: Finished difference. Result has 102 places, 113 transitions, 617 flow [2024-11-24 00:17:51,372 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=617, PETRI_PLACES=102, PETRI_TRANSITIONS=113} [2024-11-24 00:17:51,373 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 17 predicate places. [2024-11-24 00:17:51,373 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 113 transitions, 617 flow [2024-11-24 00:17:51,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:51,373 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:17:51,373 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-24 00:17:51,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:17:51,374 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:17:51,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:51,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1155132049, now seen corresponding path program 2 times [2024-11-24 00:17:51,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:51,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347341739] [2024-11-24 00:17:51,374 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:17:51,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:51,394 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:17:51,394 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:17:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 00:17:51,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:51,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347341739] [2024-11-24 00:17:51,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347341739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:17:51,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254128673] [2024-11-24 00:17:51,452 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:17:51,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:51,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:51,455 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:17:51,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:17:51,567 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:17:51,567 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:17:51,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:17:51,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:17:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 00:17:51,615 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:17:51,652 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 00:17:51,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254128673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:17:51,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:17:51,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-24 00:17:51,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132201827] [2024-11-24 00:17:51,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:17:51,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:17:51,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:51,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:17:51,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:17:51,677 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 92 [2024-11-24 00:17:51,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 113 transitions, 617 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:51,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:17:51,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 92 [2024-11-24 00:17:51,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:17:53,530 INFO L124 PetriNetUnfolderBase]: 11655/18534 cut-off events. [2024-11-24 00:17:53,530 INFO L125 PetriNetUnfolderBase]: For 16005/16101 co-relation queries the response was YES. [2024-11-24 00:17:53,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48733 conditions, 18534 events. 11655/18534 cut-off events. For 16005/16101 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 130454 event pairs, 9549 based on Foata normal form. 1/13610 useless extension candidates. Maximal degree in co-relation 48708. Up to 16419 conditions per place. [2024-11-24 00:17:53,616 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 78 selfloop transitions, 16 changer transitions 0/112 dead transitions. [2024-11-24 00:17:53,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 112 transitions, 795 flow [2024-11-24 00:17:53,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:17:53,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:17:53,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-11-24 00:17:53,618 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3695652173913043 [2024-11-24 00:17:53,618 INFO L175 Difference]: Start difference. First operand has 102 places, 113 transitions, 617 flow. Second operand 4 states and 136 transitions. [2024-11-24 00:17:53,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 112 transitions, 795 flow [2024-11-24 00:17:53,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 112 transitions, 789 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:17:53,634 INFO L231 Difference]: Finished difference. Result has 103 places, 112 transitions, 633 flow [2024-11-24 00:17:53,635 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=633, PETRI_PLACES=103, PETRI_TRANSITIONS=112} [2024-11-24 00:17:53,635 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 18 predicate places. [2024-11-24 00:17:53,635 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 112 transitions, 633 flow [2024-11-24 00:17:53,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:53,636 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:17:53,636 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:53,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-24 00:17:53,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-24 00:17:53,836 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:17:53,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:53,837 INFO L85 PathProgramCache]: Analyzing trace with hash 521744892, now seen corresponding path program 1 times [2024-11-24 00:17:53,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:53,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783499198] [2024-11-24 00:17:53,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:53,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:54,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:17:54,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:54,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783499198] [2024-11-24 00:17:54,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783499198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:54,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:54,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:17:54,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457916265] [2024-11-24 00:17:54,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:54,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:17:54,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:54,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:17:54,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:17:54,051 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-24 00:17:54,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 112 transitions, 633 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:54,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:17:54,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-24 00:17:54,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:17:56,274 INFO L124 PetriNetUnfolderBase]: 13172/21245 cut-off events. [2024-11-24 00:17:56,274 INFO L125 PetriNetUnfolderBase]: For 18763/18883 co-relation queries the response was YES. [2024-11-24 00:17:56,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56293 conditions, 21245 events. 13172/21245 cut-off events. For 18763/18883 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 151087 event pairs, 10838 based on Foata normal form. 352/16304 useless extension candidates. Maximal degree in co-relation 56267. Up to 16417 conditions per place. [2024-11-24 00:17:56,376 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 123 selfloop transitions, 7 changer transitions 7/157 dead transitions. [2024-11-24 00:17:56,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 157 transitions, 1189 flow [2024-11-24 00:17:56,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:17:56,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:17:56,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2024-11-24 00:17:56,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-11-24 00:17:56,378 INFO L175 Difference]: Start difference. First operand has 103 places, 112 transitions, 633 flow. Second operand 4 states and 191 transitions. [2024-11-24 00:17:56,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 157 transitions, 1189 flow [2024-11-24 00:17:56,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 157 transitions, 1157 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-24 00:17:56,401 INFO L231 Difference]: Finished difference. Result has 104 places, 112 transitions, 624 flow [2024-11-24 00:17:56,401 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=624, PETRI_PLACES=104, PETRI_TRANSITIONS=112} [2024-11-24 00:17:56,402 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 19 predicate places. [2024-11-24 00:17:56,402 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 112 transitions, 624 flow [2024-11-24 00:17:56,402 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) [2024-11-24 00:17:56,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:17:56,402 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2024-11-24 00:17:56,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:17:56,403 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:17:56,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:56,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1150202676, now seen corresponding path program 1 times [2024-11-24 00:17:56,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:56,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635334133] [2024-11-24 00:17:56,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:56,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:56,628 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:56,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:56,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635334133] [2024-11-24 00:17:56,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635334133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:17:56,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523542738] [2024-11-24 00:17:56,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:56,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:56,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:56,630 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:17:56,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:17:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:56,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 00:17:56,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:17:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:56,814 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:17:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:17:57,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523542738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:17:57,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:17:57,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-24 00:17:57,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886634618] [2024-11-24 00:17:57,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:17:57,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-24 00:17:57,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:57,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-24 00:17:57,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-24 00:17:57,087 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 92 [2024-11-24 00:17:57,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 112 transitions, 624 flow. Second operand has 24 states, 24 states have (on average 22.083333333333332) internal successors, (530), 24 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:57,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:17:57,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 92 [2024-11-24 00:17:57,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:17:59,532 INFO L124 PetriNetUnfolderBase]: 13214/21543 cut-off events. [2024-11-24 00:17:59,533 INFO L125 PetriNetUnfolderBase]: For 20102/20270 co-relation queries the response was YES. [2024-11-24 00:17:59,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59281 conditions, 21543 events. 13214/21543 cut-off events. For 20102/20270 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 155729 event pairs, 10838 based on Foata normal form. 36/16155 useless extension candidates. Maximal degree in co-relation 59255. Up to 18830 conditions per place. [2024-11-24 00:17:59,656 INFO L140 encePairwiseOnDemand]: 80/92 looper letters, 57 selfloop transitions, 91 changer transitions 0/166 dead transitions. [2024-11-24 00:17:59,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 166 transitions, 1328 flow [2024-11-24 00:17:59,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 00:17:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-24 00:17:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 615 transitions. [2024-11-24 00:17:59,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3038537549407115 [2024-11-24 00:17:59,660 INFO L175 Difference]: Start difference. First operand has 104 places, 112 transitions, 624 flow. Second operand 22 states and 615 transitions. [2024-11-24 00:17:59,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 166 transitions, 1328 flow [2024-11-24 00:17:59,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 166 transitions, 1289 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-24 00:17:59,690 INFO L231 Difference]: Finished difference. Result has 129 places, 166 transitions, 1249 flow [2024-11-24 00:17:59,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1249, PETRI_PLACES=129, PETRI_TRANSITIONS=166} [2024-11-24 00:17:59,691 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 44 predicate places. [2024-11-24 00:17:59,691 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 166 transitions, 1249 flow [2024-11-24 00:17:59,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 22.083333333333332) internal successors, (530), 24 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:59,692 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:17:59,692 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:59,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 00:17:59,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 00:17:59,894 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:17:59,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:59,895 INFO L85 PathProgramCache]: Analyzing trace with hash -728067188, now seen corresponding path program 1 times [2024-11-24 00:17:59,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:59,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605829060] [2024-11-24 00:17:59,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:59,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:18:00,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:00,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605829060] [2024-11-24 00:18:00,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605829060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:18:00,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559692574] [2024-11-24 00:18:00,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:00,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:00,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:18:00,065 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:18:00,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:18:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:00,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:18:00,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:18:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:18:00,230 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:18:00,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559692574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:00,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:18:00,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-24 00:18:00,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197476050] [2024-11-24 00:18:00,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:00,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:00,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:00,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:00,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:18:00,232 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-24 00:18:00,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 166 transitions, 1249 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:00,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:18:00,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-24 00:18:00,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:18:02,680 INFO L124 PetriNetUnfolderBase]: 12093/19870 cut-off events. [2024-11-24 00:18:02,681 INFO L125 PetriNetUnfolderBase]: For 19285/19453 co-relation queries the response was YES. [2024-11-24 00:18:02,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54929 conditions, 19870 events. 12093/19870 cut-off events. For 19285/19453 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 141403 event pairs, 9855 based on Foata normal form. 0/15185 useless extension candidates. Maximal degree in co-relation 54897. Up to 17417 conditions per place. [2024-11-24 00:18:02,820 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 143 selfloop transitions, 1 changer transitions 0/164 dead transitions. [2024-11-24 00:18:02,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 164 transitions, 1529 flow [2024-11-24 00:18:02,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:02,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:18:02,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-24 00:18:02,821 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47101449275362317 [2024-11-24 00:18:02,821 INFO L175 Difference]: Start difference. First operand has 129 places, 166 transitions, 1249 flow. Second operand 3 states and 130 transitions. [2024-11-24 00:18:02,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 164 transitions, 1529 flow [2024-11-24 00:18:02,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 164 transitions, 1297 flow, removed 67 selfloop flow, removed 9 redundant places. [2024-11-24 00:18:02,853 INFO L231 Difference]: Finished difference. Result has 120 places, 164 transitions, 1011 flow [2024-11-24 00:18:02,854 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1011, PETRI_PLACES=120, PETRI_TRANSITIONS=164} [2024-11-24 00:18:02,856 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 35 predicate places. [2024-11-24 00:18:02,856 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 164 transitions, 1011 flow [2024-11-24 00:18:02,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:02,856 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:18:02,856 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:02,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-24 00:18:03,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-24 00:18:03,057 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:18:03,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:03,058 INFO L85 PathProgramCache]: Analyzing trace with hash -728067187, now seen corresponding path program 1 times [2024-11-24 00:18:03,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:03,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192177168] [2024-11-24 00:18:03,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:03,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:18:03,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:03,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192177168] [2024-11-24 00:18:03,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192177168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:03,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:03,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:18:03,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662469093] [2024-11-24 00:18:03,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:03,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:18:03,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:03,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:18:03,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:18:03,337 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 92 [2024-11-24 00:18:03,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 164 transitions, 1011 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:03,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:18:03,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 92 [2024-11-24 00:18:03,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:18:06,309 INFO L124 PetriNetUnfolderBase]: 17262/27781 cut-off events. [2024-11-24 00:18:06,309 INFO L125 PetriNetUnfolderBase]: For 20811/20811 co-relation queries the response was YES. [2024-11-24 00:18:06,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75311 conditions, 27781 events. 17262/27781 cut-off events. For 20811/20811 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 195231 event pairs, 6430 based on Foata normal form. 438/22020 useless extension candidates. Maximal degree in co-relation 75279. Up to 10270 conditions per place. [2024-11-24 00:18:06,463 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 210 selfloop transitions, 6 changer transitions 0/233 dead transitions. [2024-11-24 00:18:06,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 233 transitions, 1720 flow [2024-11-24 00:18:06,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:18:06,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 00:18:06,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 238 transitions. [2024-11-24 00:18:06,465 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5173913043478261 [2024-11-24 00:18:06,465 INFO L175 Difference]: Start difference. First operand has 120 places, 164 transitions, 1011 flow. Second operand 5 states and 238 transitions. [2024-11-24 00:18:06,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 233 transitions, 1720 flow [2024-11-24 00:18:06,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 233 transitions, 1719 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:18:06,546 INFO L231 Difference]: Finished difference. Result has 126 places, 169 transitions, 1057 flow [2024-11-24 00:18:06,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1057, PETRI_PLACES=126, PETRI_TRANSITIONS=169} [2024-11-24 00:18:06,547 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 41 predicate places. [2024-11-24 00:18:06,547 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 169 transitions, 1057 flow [2024-11-24 00:18:06,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:06,547 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:18:06,547 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:06,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 00:18:06,548 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:18:06,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:06,548 INFO L85 PathProgramCache]: Analyzing trace with hash -689133604, now seen corresponding path program 1 times [2024-11-24 00:18:06,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:06,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904801316] [2024-11-24 00:18:06,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:06,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:06,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:18:06,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:06,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904801316] [2024-11-24 00:18:06,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904801316] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:18:06,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955513538] [2024-11-24 00:18:06,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:06,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:06,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:18:06,797 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:18:06,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:18:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:06,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:18:06,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:18:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:18:06,969 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:18:06,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955513538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:06,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:18:06,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-24 00:18:06,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383770260] [2024-11-24 00:18:06,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:06,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:06,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:06,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:06,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:18:06,971 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-24 00:18:06,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 169 transitions, 1057 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:06,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:18:06,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-24 00:18:06,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:18:08,813 INFO L124 PetriNetUnfolderBase]: 11366/18987 cut-off events. [2024-11-24 00:18:08,813 INFO L125 PetriNetUnfolderBase]: For 19101/19305 co-relation queries the response was YES. [2024-11-24 00:18:08,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53581 conditions, 18987 events. 11366/18987 cut-off events. For 19101/19305 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 135202 event pairs, 9320 based on Foata normal form. 36/15558 useless extension candidates. Maximal degree in co-relation 53545. Up to 16572 conditions per place. [2024-11-24 00:18:08,935 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 143 selfloop transitions, 1 changer transitions 0/167 dead transitions. [2024-11-24 00:18:08,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 167 transitions, 1337 flow [2024-11-24 00:18:08,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:08,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:18:08,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2024-11-24 00:18:08,937 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2024-11-24 00:18:08,937 INFO L175 Difference]: Start difference. First operand has 126 places, 169 transitions, 1057 flow. Second operand 3 states and 128 transitions. [2024-11-24 00:18:08,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 167 transitions, 1337 flow [2024-11-24 00:18:08,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 167 transitions, 1337 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 00:18:08,972 INFO L231 Difference]: Finished difference. Result has 126 places, 167 transitions, 1051 flow [2024-11-24 00:18:08,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1051, PETRI_PLACES=126, PETRI_TRANSITIONS=167} [2024-11-24 00:18:08,973 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 41 predicate places. [2024-11-24 00:18:08,974 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 167 transitions, 1051 flow [2024-11-24 00:18:08,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:08,974 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:18:08,974 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:08,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 00:18:09,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 00:18:09,175 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:18:09,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:09,175 INFO L85 PathProgramCache]: Analyzing trace with hash -689133607, now seen corresponding path program 1 times [2024-11-24 00:18:09,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:09,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824499873] [2024-11-24 00:18:09,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:09,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:18:09,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:09,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824499873] [2024-11-24 00:18:09,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824499873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:18:09,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468845419] [2024-11-24 00:18:09,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:09,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:09,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:18:09,775 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:18:09,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:18:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:09,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-24 00:18:09,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:18:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:18:09,999 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:18:09,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468845419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:09,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:18:09,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 11 [2024-11-24 00:18:09,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962352084] [2024-11-24 00:18:09,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:10,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:18:10,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:10,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:18:10,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:18:10,030 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 92 [2024-11-24 00:18:10,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 167 transitions, 1051 flow. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:10,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:18:10,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 92 [2024-11-24 00:18:10,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:18:12,777 INFO L124 PetriNetUnfolderBase]: 13464/22119 cut-off events. [2024-11-24 00:18:12,777 INFO L125 PetriNetUnfolderBase]: For 20566/20662 co-relation queries the response was YES. [2024-11-24 00:18:12,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61585 conditions, 22119 events. 13464/22119 cut-off events. For 20566/20662 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 156801 event pairs, 4056 based on Foata normal form. 42/18486 useless extension candidates. Maximal degree in co-relation 61547. Up to 12405 conditions per place. [2024-11-24 00:18:12,925 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 192 selfloop transitions, 8 changer transitions 0/222 dead transitions. [2024-11-24 00:18:12,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 222 transitions, 1667 flow [2024-11-24 00:18:12,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:18:12,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 00:18:12,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 230 transitions. [2024-11-24 00:18:12,927 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-24 00:18:12,927 INFO L175 Difference]: Start difference. First operand has 126 places, 167 transitions, 1051 flow. Second operand 5 states and 230 transitions. [2024-11-24 00:18:12,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 222 transitions, 1667 flow [2024-11-24 00:18:12,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 222 transitions, 1666 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:18:12,957 INFO L231 Difference]: Finished difference. Result has 131 places, 171 transitions, 1101 flow [2024-11-24 00:18:12,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1101, PETRI_PLACES=131, PETRI_TRANSITIONS=171} [2024-11-24 00:18:12,958 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 46 predicate places. [2024-11-24 00:18:12,958 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 171 transitions, 1101 flow [2024-11-24 00:18:12,959 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) [2024-11-24 00:18:12,959 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:18:12,959 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:12,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 00:18:13,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 00:18:13,159 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:18:13,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:13,160 INFO L85 PathProgramCache]: Analyzing trace with hash -689133606, now seen corresponding path program 1 times [2024-11-24 00:18:13,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:13,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092303045] [2024-11-24 00:18:13,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:13,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:13,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:13,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092303045] [2024-11-24 00:18:13,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092303045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:18:13,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481836332] [2024-11-24 00:18:13,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:13,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:13,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:18:13,894 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:18:13,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:18:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:14,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-24 00:18:14,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:18:14,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-24 00:18:14,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-24 00:18:14,335 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-24 00:18:14,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-24 00:18:14,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-24 00:18:14,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:14,829 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:18:15,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:18:15,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2024-11-24 00:18:15,765 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-24 00:18:15,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 68 [2024-11-24 00:18:15,786 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-24 00:18:15,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 26 [2024-11-24 00:18:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:16,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481836332] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:18:16,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:18:16,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2024-11-24 00:18:16,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810632719] [2024-11-24 00:18:16,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:18:16,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-24 00:18:16,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:16,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-24 00:18:16,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=440, Unknown=2, NotChecked=0, Total=552 [2024-11-24 00:18:16,389 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 92 [2024-11-24 00:18:16,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 171 transitions, 1101 flow. Second operand has 24 states, 24 states have (on average 14.333333333333334) internal successors, (344), 24 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:16,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:18:16,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 92 [2024-11-24 00:18:16,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:18:20,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-24 00:18:25,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-24 00:18:30,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-24 00:18:35,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-24 00:18:48,734 INFO L124 PetriNetUnfolderBase]: 46182/71571 cut-off events. [2024-11-24 00:18:48,734 INFO L125 PetriNetUnfolderBase]: For 84187/84361 co-relation queries the response was YES. [2024-11-24 00:18:49,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208830 conditions, 71571 events. 46182/71571 cut-off events. For 84187/84361 co-relation queries the response was YES. Maximal size of possible extension queue 1816. Compared 544384 event pairs, 11013 based on Foata normal form. 1121/61456 useless extension candidates. Maximal degree in co-relation 208789. Up to 13442 conditions per place. [2024-11-24 00:18:49,255 INFO L140 encePairwiseOnDemand]: 72/92 looper letters, 500 selfloop transitions, 220 changer transitions 41/773 dead transitions. [2024-11-24 00:18:49,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 773 transitions, 5767 flow [2024-11-24 00:18:49,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-24 00:18:49,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-24 00:18:49,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 984 transitions. [2024-11-24 00:18:49,261 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27424749163879597 [2024-11-24 00:18:49,261 INFO L175 Difference]: Start difference. First operand has 131 places, 171 transitions, 1101 flow. Second operand 39 states and 984 transitions. [2024-11-24 00:18:49,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 773 transitions, 5767 flow [2024-11-24 00:18:49,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 773 transitions, 5745 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-24 00:18:49,495 INFO L231 Difference]: Finished difference. Result has 182 places, 351 transitions, 3265 flow [2024-11-24 00:18:49,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3265, PETRI_PLACES=182, PETRI_TRANSITIONS=351} [2024-11-24 00:18:49,496 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 97 predicate places. [2024-11-24 00:18:49,496 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 351 transitions, 3265 flow [2024-11-24 00:18:49,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.333333333333334) internal successors, (344), 24 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:49,497 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:18:49,497 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:49,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 00:18:49,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:49,698 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:18:49,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:49,698 INFO L85 PathProgramCache]: Analyzing trace with hash 509214582, now seen corresponding path program 1 times [2024-11-24 00:18:49,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:49,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809153825] [2024-11-24 00:18:49,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:49,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:49,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:18:49,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:49,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809153825] [2024-11-24 00:18:49,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809153825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:49,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:49,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:18:49,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907144948] [2024-11-24 00:18:49,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:49,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:49,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:49,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:49,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:49,781 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2024-11-24 00:18:49,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 351 transitions, 3265 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:49,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:18:49,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2024-11-24 00:18:49,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:18:57,676 INFO L124 PetriNetUnfolderBase]: 24370/41488 cut-off events. [2024-11-24 00:18:57,676 INFO L125 PetriNetUnfolderBase]: For 150226/150797 co-relation queries the response was YES. [2024-11-24 00:18:57,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149208 conditions, 41488 events. 24370/41488 cut-off events. For 150226/150797 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 347485 event pairs, 10052 based on Foata normal form. 110/36820 useless extension candidates. Maximal degree in co-relation 149152. Up to 35025 conditions per place. [2024-11-24 00:18:58,068 INFO L140 encePairwiseOnDemand]: 90/92 looper letters, 324 selfloop transitions, 1 changer transitions 0/354 dead transitions. [2024-11-24 00:18:58,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 354 transitions, 3884 flow [2024-11-24 00:18:58,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:58,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 00:18:58,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2024-11-24 00:18:58,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48188405797101447 [2024-11-24 00:18:58,070 INFO L175 Difference]: Start difference. First operand has 182 places, 351 transitions, 3265 flow. Second operand 3 states and 133 transitions. [2024-11-24 00:18:58,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 354 transitions, 3884 flow [2024-11-24 00:18:58,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 354 transitions, 3843 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-11-24 00:18:58,976 INFO L231 Difference]: Finished difference. Result has 181 places, 347 transitions, 3178 flow [2024-11-24 00:18:58,976 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=3176, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3178, PETRI_PLACES=181, PETRI_TRANSITIONS=347} [2024-11-24 00:18:58,976 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 96 predicate places. [2024-11-24 00:18:58,977 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 347 transitions, 3178 flow [2024-11-24 00:18:58,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:58,977 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:18:58,977 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:58,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 00:18:58,977 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:18:58,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:58,977 INFO L85 PathProgramCache]: Analyzing trace with hash -545787641, now seen corresponding path program 1 times [2024-11-24 00:18:58,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:58,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469885238] [2024-11-24 00:18:58,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:58,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:18:59,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:59,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469885238] [2024-11-24 00:18:59,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469885238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:59,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:59,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:18:59,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209318875] [2024-11-24 00:18:59,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:59,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:18:59,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:59,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:18:59,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:18:59,113 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 92 [2024-11-24 00:18:59,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 347 transitions, 3178 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:59,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:18:59,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 92 [2024-11-24 00:18:59,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:19:09,952 INFO L124 PetriNetUnfolderBase]: 39364/61234 cut-off events. [2024-11-24 00:19:09,952 INFO L125 PetriNetUnfolderBase]: For 171515/171803 co-relation queries the response was YES. [2024-11-24 00:19:10,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212354 conditions, 61234 events. 39364/61234 cut-off events. For 171515/171803 co-relation queries the response was YES. Maximal size of possible extension queue 1895. Compared 483676 event pairs, 17265 based on Foata normal form. 1388/53743 useless extension candidates. Maximal degree in co-relation 212298. Up to 41595 conditions per place. [2024-11-24 00:19:10,774 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 400 selfloop transitions, 8 changer transitions 0/433 dead transitions. [2024-11-24 00:19:10,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 433 transitions, 4758 flow [2024-11-24 00:19:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:19:10,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:19:10,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-11-24 00:19:10,775 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-11-24 00:19:10,775 INFO L175 Difference]: Start difference. First operand has 181 places, 347 transitions, 3178 flow. Second operand 4 states and 186 transitions. [2024-11-24 00:19:10,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 433 transitions, 4758 flow [2024-11-24 00:19:12,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 433 transitions, 4756 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:19:12,546 INFO L231 Difference]: Finished difference. Result has 185 places, 349 transitions, 3231 flow [2024-11-24 00:19:12,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=3177, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3231, PETRI_PLACES=185, PETRI_TRANSITIONS=349} [2024-11-24 00:19:12,546 INFO L279 CegarLoopForPetriNet]: 85 programPoint places, 100 predicate places. [2024-11-24 00:19:12,547 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 349 transitions, 3231 flow [2024-11-24 00:19:12,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:12,547 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:19:12,547 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:12,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 00:19:12,547 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-24 00:19:12,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:12,548 INFO L85 PathProgramCache]: Analyzing trace with hash 509214583, now seen corresponding path program 1 times [2024-11-24 00:19:12,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:12,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292118423] [2024-11-24 00:19:12,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:12,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:19:12,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:12,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292118423] [2024-11-24 00:19:12,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292118423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:19:12,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628535703] [2024-11-24 00:19:12,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:12,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:12,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:19:12,624 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:19:12,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c787ee0c-3a4e-4c68-ac57-0015a6e7dc44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:19:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:12,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 00:19:12,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:19:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:13,002 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:19:13,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:13,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628535703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:19:13,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:19:13,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 15 [2024-11-24 00:19:13,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713060358] [2024-11-24 00:19:13,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:19:13,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 00:19:13,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:13,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 00:19:13,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:19:13,397 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 92 [2024-11-24 00:19:13,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 349 transitions, 3231 flow. Second operand has 15 states, 15 states have (on average 23.4) internal successors, (351), 15 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:13,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:19:13,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 92 [2024-11-24 00:19:13,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand