./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-figure1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-figure1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX --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 facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:04:13,204 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:04:13,302 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 16:04:13,309 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:04:13,311 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:04:13,343 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:04:13,344 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:04:13,344 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:04:13,345 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:04:13,347 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:04:13,348 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:04:13,348 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:04:13,349 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:04:13,353 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:04:13,353 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:04:13,354 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:04:13,354 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:04:13,354 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:04:13,355 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:04:13,355 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:04:13,355 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:04:13,355 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:04:13,356 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:04:13,356 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:04:13,356 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:04:13,356 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 16:04:13,357 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:04:13,357 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:04:13,357 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:04:13,357 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:04:13,358 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:04:13,358 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:04:13,358 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:04:13,360 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:04:13,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:04:13,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:04:13,362 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:04:13,362 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:04:13,363 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:04:13,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:04:13,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:04:13,364 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:04:13,364 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:04:13,364 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:04:13,364 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 [2024-11-08 16:04:13,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:04:13,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:04:13,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:04:13,727 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:04:13,727 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:04:13,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-figure1.wvr.c Unable to find full path for "g++" [2024-11-08 16:04:15,657 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:04:15,838 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:04:15,838 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-08 16:04:15,846 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/data/a204aec1b/de8c164ec73f4084851c94575d012a72/FLAGd03a4b22d [2024-11-08 16:04:15,865 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/data/a204aec1b/de8c164ec73f4084851c94575d012a72 [2024-11-08 16:04:15,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:04:15,869 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:04:15,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:04:15,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:04:15,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:04:15,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:04:15" (1/1) ... [2024-11-08 16:04:15,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e7a47d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:15, skipping insertion in model container [2024-11-08 16:04:15,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:04:15" (1/1) ... [2024-11-08 16:04:15,899 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:04:16,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:04:16,130 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:04:16,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:04:16,171 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:04:16,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16 WrapperNode [2024-11-08 16:04:16,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:04:16,177 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:04:16,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:04:16,177 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:04:16,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:16,193 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:16,214 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 62 [2024-11-08 16:04:16,215 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:04:16,216 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:04:16,216 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:04:16,216 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:04:16,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:16,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:16,229 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:16,242 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 16:04:16,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:16,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:16,246 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:16,250 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:16,251 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:16,252 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:16,257 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:04:16,258 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:04:16,258 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:04:16,258 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:04:16,259 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (1/1) ... [2024-11-08 16:04:16,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:04:16,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:16,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:04:16,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:04:16,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:04:16,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 16:04:16,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 16:04:16,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 16:04:16,337 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 16:04:16,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:04:16,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:04:16,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:04:16,340 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 16:04:16,457 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:04:16,459 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:04:16,650 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:04:16,650 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:04:16,856 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:04:16,856 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:04:16,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:04:16 BoogieIcfgContainer [2024-11-08 16:04:16,857 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:04:16,860 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:04:16,862 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:04:16,866 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:04:16,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:04:15" (1/3) ... [2024-11-08 16:04:16,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2e1524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:04:16, skipping insertion in model container [2024-11-08 16:04:16,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:16" (2/3) ... [2024-11-08 16:04:16,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2e1524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:04:16, skipping insertion in model container [2024-11-08 16:04:16,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:04:16" (3/3) ... [2024-11-08 16:04:16,871 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2024-11-08 16:04:16,889 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:04:16,890 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-08 16:04:16,890 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:04:16,944 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 16:04:16,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 38 transitions, 90 flow [2024-11-08 16:04:17,008 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-11-08 16:04:17,008 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 16:04:17,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 4/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 85 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-08 16:04:17,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 38 transitions, 90 flow [2024-11-08 16:04:17,015 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 34 transitions, 77 flow [2024-11-08 16:04:17,025 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:04:17,032 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;@74cbc5ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:04:17,032 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-08 16:04:17,040 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:04:17,040 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-08 16:04:17,040 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 16:04:17,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:17,041 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 16:04:17,042 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 16:04:17,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:17,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1009887637, now seen corresponding path program 1 times [2024-11-08 16:04:17,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:17,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816795256] [2024-11-08 16:04:17,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:17,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:17,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:17,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:17,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816795256] [2024-11-08 16:04:17,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816795256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:17,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:17,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:04:17,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293194895] [2024-11-08 16:04:17,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:17,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:04:17,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:17,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:04:17,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:04:17,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:04:17,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:17,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:17,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:04:17,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:17,559 INFO L124 PetriNetUnfolderBase]: 206/443 cut-off events. [2024-11-08 16:04:17,559 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-08 16:04:17,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 443 events. 206/443 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2131 event pairs, 77 based on Foata normal form. 4/338 useless extension candidates. Maximal degree in co-relation 753. Up to 289 conditions per place. [2024-11-08 16:04:17,569 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 26 selfloop transitions, 2 changer transitions 1/42 dead transitions. [2024-11-08 16:04:17,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 157 flow [2024-11-08 16:04:17,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:04:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:04:17,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-08 16:04:17,583 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6754385964912281 [2024-11-08 16:04:17,585 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 77 flow. Second operand 3 states and 77 transitions. [2024-11-08 16:04:17,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 157 flow [2024-11-08 16:04:17,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 149 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 16:04:17,592 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 88 flow [2024-11-08 16:04:17,594 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2024-11-08 16:04:17,601 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2024-11-08 16:04:17,601 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 88 flow [2024-11-08 16:04:17,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:17,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:17,602 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:17,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:04:17,602 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 16:04:17,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:17,603 INFO L85 PathProgramCache]: Analyzing trace with hash 160599406, now seen corresponding path program 1 times [2024-11-08 16:04:17,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:17,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753907801] [2024-11-08 16:04:17,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:17,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:17,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:17,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:17,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753907801] [2024-11-08 16:04:17,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753907801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:17,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:17,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:04:17,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59290535] [2024-11-08 16:04:17,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:17,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:04:17,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:17,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:04:17,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:04:17,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-08 16:04:17,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:17,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:17,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-08 16:04:17,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:18,011 INFO L124 PetriNetUnfolderBase]: 318/629 cut-off events. [2024-11-08 16:04:18,011 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-08 16:04:18,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 629 events. 318/629 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3086 event pairs, 109 based on Foata normal form. 18/495 useless extension candidates. Maximal degree in co-relation 827. Up to 420 conditions per place. [2024-11-08 16:04:18,024 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 45 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2024-11-08 16:04:18,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 60 transitions, 244 flow [2024-11-08 16:04:18,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:04:18,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:04:18,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-11-08 16:04:18,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6776315789473685 [2024-11-08 16:04:18,027 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 88 flow. Second operand 4 states and 103 transitions. [2024-11-08 16:04:18,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 60 transitions, 244 flow [2024-11-08 16:04:18,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:04:18,031 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 115 flow [2024-11-08 16:04:18,031 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2024-11-08 16:04:18,032 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2024-11-08 16:04:18,032 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 115 flow [2024-11-08 16:04:18,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:18,032 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:18,032 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:18,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:04:18,033 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 16:04:18,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:18,036 INFO L85 PathProgramCache]: Analyzing trace with hash -947035325, now seen corresponding path program 1 times [2024-11-08 16:04:18,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:18,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320639278] [2024-11-08 16:04:18,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:18,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:18,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:18,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320639278] [2024-11-08 16:04:18,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320639278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:18,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:18,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:04:18,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662453633] [2024-11-08 16:04:18,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:18,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:04:18,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:18,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:04:18,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:04:18,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:04:18,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:18,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:18,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:04:18,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:18,319 INFO L124 PetriNetUnfolderBase]: 239/549 cut-off events. [2024-11-08 16:04:18,319 INFO L125 PetriNetUnfolderBase]: For 166/172 co-relation queries the response was YES. [2024-11-08 16:04:18,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 549 events. 239/549 cut-off events. For 166/172 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2830 event pairs, 133 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 903. Up to 284 conditions per place. [2024-11-08 16:04:18,327 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 37 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-08 16:04:18,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 53 transitions, 247 flow [2024-11-08 16:04:18,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:04:18,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:04:18,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-08 16:04:18,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7105263157894737 [2024-11-08 16:04:18,330 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 115 flow. Second operand 3 states and 81 transitions. [2024-11-08 16:04:18,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 53 transitions, 247 flow [2024-11-08 16:04:18,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 53 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:04:18,333 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 136 flow [2024-11-08 16:04:18,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-11-08 16:04:18,334 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2024-11-08 16:04:18,335 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 136 flow [2024-11-08 16:04:18,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:18,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:18,335 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:18,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:04:18,336 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 16:04:18,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:18,336 INFO L85 PathProgramCache]: Analyzing trace with hash 827318276, now seen corresponding path program 1 times [2024-11-08 16:04:18,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:18,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005470159] [2024-11-08 16:04:18,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:18,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:18,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:18,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005470159] [2024-11-08 16:04:18,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005470159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:18,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:18,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:04:18,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381773051] [2024-11-08 16:04:18,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:18,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:04:18,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:18,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:04:18,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:04:18,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:04:18,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:18,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:18,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:04:18,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:18,686 INFO L124 PetriNetUnfolderBase]: 300/664 cut-off events. [2024-11-08 16:04:18,686 INFO L125 PetriNetUnfolderBase]: For 499/501 co-relation queries the response was YES. [2024-11-08 16:04:18,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 664 events. 300/664 cut-off events. For 499/501 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3280 event pairs, 56 based on Foata normal form. 25/616 useless extension candidates. Maximal degree in co-relation 1287. Up to 236 conditions per place. [2024-11-08 16:04:18,692 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 40 selfloop transitions, 4 changer transitions 1/58 dead transitions. [2024-11-08 16:04:18,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 288 flow [2024-11-08 16:04:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:04:18,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:04:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-08 16:04:18,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6907894736842105 [2024-11-08 16:04:18,695 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 136 flow. Second operand 4 states and 105 transitions. [2024-11-08 16:04:18,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 288 flow [2024-11-08 16:04:18,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:04:18,701 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 164 flow [2024-11-08 16:04:18,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-11-08 16:04:18,702 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2024-11-08 16:04:18,702 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 164 flow [2024-11-08 16:04:18,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:18,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:18,703 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:18,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:04:18,705 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 16:04:18,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:18,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1173118683, now seen corresponding path program 1 times [2024-11-08 16:04:18,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:18,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073539983] [2024-11-08 16:04:18,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:18,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:18,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:18,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:18,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073539983] [2024-11-08 16:04:18,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073539983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:18,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076896010] [2024-11-08 16:04:18,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:18,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:18,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:18,814 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:18,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:04:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:18,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:04:18,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:18,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:18,954 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:04:18,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076896010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:18,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:04:18,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-08 16:04:18,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545622186] [2024-11-08 16:04:18,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:18,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:04:18,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:18,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:04:18,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:04:18,956 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:04:18,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:18,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:18,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:04:18,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:19,076 INFO L124 PetriNetUnfolderBase]: 273/636 cut-off events. [2024-11-08 16:04:19,076 INFO L125 PetriNetUnfolderBase]: For 674/686 co-relation queries the response was YES. [2024-11-08 16:04:19,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1460 conditions, 636 events. 273/636 cut-off events. For 674/686 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3195 event pairs, 202 based on Foata normal form. 24/575 useless extension candidates. Maximal degree in co-relation 1133. Up to 427 conditions per place. [2024-11-08 16:04:19,082 INFO L140 encePairwiseOnDemand]: 36/38 looper letters, 25 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2024-11-08 16:04:19,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 198 flow [2024-11-08 16:04:19,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:04:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:04:19,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-11-08 16:04:19,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-11-08 16:04:19,084 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 164 flow. Second operand 3 states and 65 transitions. [2024-11-08 16:04:19,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 198 flow [2024-11-08 16:04:19,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 192 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 16:04:19,090 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 142 flow [2024-11-08 16:04:19,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-11-08 16:04:19,091 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2024-11-08 16:04:19,091 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 142 flow [2024-11-08 16:04:19,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:19,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:19,094 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:19,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 16:04:19,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:19,295 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 16:04:19,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:19,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1689206352, now seen corresponding path program 1 times [2024-11-08 16:04:19,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:19,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544835352] [2024-11-08 16:04:19,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:19,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:19,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:19,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544835352] [2024-11-08 16:04:19,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544835352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:19,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:19,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:04:19,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366238818] [2024-11-08 16:04:19,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:19,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:04:19,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:19,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:04:19,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:04:19,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-08 16:04:19,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:19,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:19,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-08 16:04:19,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:19,607 INFO L124 PetriNetUnfolderBase]: 507/1038 cut-off events. [2024-11-08 16:04:19,608 INFO L125 PetriNetUnfolderBase]: For 726/776 co-relation queries the response was YES. [2024-11-08 16:04:19,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2447 conditions, 1038 events. 507/1038 cut-off events. For 726/776 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5311 event pairs, 246 based on Foata normal form. 22/953 useless extension candidates. Maximal degree in co-relation 2435. Up to 537 conditions per place. [2024-11-08 16:04:19,616 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 54 selfloop transitions, 4 changer transitions 1/70 dead transitions. [2024-11-08 16:04:19,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 70 transitions, 402 flow [2024-11-08 16:04:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:04:19,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:04:19,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-08 16:04:19,618 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-11-08 16:04:19,618 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 142 flow. Second operand 4 states and 96 transitions. [2024-11-08 16:04:19,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 70 transitions, 402 flow [2024-11-08 16:04:19,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:04:19,624 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 170 flow [2024-11-08 16:04:19,624 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2024-11-08 16:04:19,625 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2024-11-08 16:04:19,625 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 170 flow [2024-11-08 16:04:19,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:19,626 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:19,626 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:19,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:04:19,627 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 16:04:19,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:19,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2085613144, now seen corresponding path program 1 times [2024-11-08 16:04:19,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:19,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612895749] [2024-11-08 16:04:19,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:19,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:19,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:19,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612895749] [2024-11-08 16:04:19,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612895749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:19,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754855430] [2024-11-08 16:04:19,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:19,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:19,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:19,745 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:19,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:04:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:19,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:04:19,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:19,862 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:04:19,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754855430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:19,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:04:19,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 16:04:19,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230012513] [2024-11-08 16:04:19,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:19,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:04:19,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:19,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:04:19,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:04:19,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-08 16:04:19,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 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) [2024-11-08 16:04:19,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:19,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-08 16:04:19,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:20,188 INFO L124 PetriNetUnfolderBase]: 502/1054 cut-off events. [2024-11-08 16:04:20,188 INFO L125 PetriNetUnfolderBase]: For 927/979 co-relation queries the response was YES. [2024-11-08 16:04:20,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2658 conditions, 1054 events. 502/1054 cut-off events. For 927/979 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5372 event pairs, 59 based on Foata normal form. 26/928 useless extension candidates. Maximal degree in co-relation 2644. Up to 294 conditions per place. [2024-11-08 16:04:20,196 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 72 selfloop transitions, 7 changer transitions 1/91 dead transitions. [2024-11-08 16:04:20,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 91 transitions, 538 flow [2024-11-08 16:04:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:04:20,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:04:20,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-11-08 16:04:20,198 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2024-11-08 16:04:20,198 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 170 flow. Second operand 6 states and 141 transitions. [2024-11-08 16:04:20,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 91 transitions, 538 flow [2024-11-08 16:04:20,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 91 transitions, 523 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:04:20,203 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 177 flow [2024-11-08 16:04:20,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=177, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-11-08 16:04:20,204 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2024-11-08 16:04:20,204 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 177 flow [2024-11-08 16:04:20,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 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) [2024-11-08 16:04:20,204 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:20,204 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-08 16:04:20,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:04:20,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-08 16:04:20,405 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 16:04:20,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:20,406 INFO L85 PathProgramCache]: Analyzing trace with hash -229497748, now seen corresponding path program 1 times [2024-11-08 16:04:20,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:20,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855162390] [2024-11-08 16:04:20,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:20,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:20,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:20,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:20,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855162390] [2024-11-08 16:04:20,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855162390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:20,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928270113] [2024-11-08 16:04:20,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:20,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:20,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:20,475 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:20,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:04:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:20,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:04:20,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:20,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:20,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:20,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928270113] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:20,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:20,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 16:04:20,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025017716] [2024-11-08 16:04:20,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:20,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 16:04:20,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:20,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 16:04:20,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 16:04:20,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-08 16:04:20,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 177 flow. Second operand has 12 states, 12 states have (on average 14.666666666666666) internal successors, (176), 12 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:20,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:20,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-08 16:04:20,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:21,260 INFO L124 PetriNetUnfolderBase]: 1010/2069 cut-off events. [2024-11-08 16:04:21,260 INFO L125 PetriNetUnfolderBase]: For 2598/2674 co-relation queries the response was YES. [2024-11-08 16:04:21,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5584 conditions, 2069 events. 1010/2069 cut-off events. For 2598/2674 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11409 event pairs, 147 based on Foata normal form. 78/1907 useless extension candidates. Maximal degree in co-relation 5570. Up to 628 conditions per place. [2024-11-08 16:04:21,275 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 136 selfloop transitions, 13 changer transitions 0/160 dead transitions. [2024-11-08 16:04:21,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 160 transitions, 993 flow [2024-11-08 16:04:21,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:04:21,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 16:04:21,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-11-08 16:04:21,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6552631578947369 [2024-11-08 16:04:21,277 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 177 flow. Second operand 10 states and 249 transitions. [2024-11-08 16:04:21,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 160 transitions, 993 flow [2024-11-08 16:04:21,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 160 transitions, 963 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-08 16:04:21,285 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 245 flow [2024-11-08 16:04:21,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=245, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-11-08 16:04:21,287 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 22 predicate places. [2024-11-08 16:04:21,287 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 245 flow [2024-11-08 16:04:21,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.666666666666666) internal successors, (176), 12 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:21,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:21,288 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:21,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:04:21,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 16:04:21,492 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 16:04:21,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:21,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1936430474, now seen corresponding path program 1 times [2024-11-08 16:04:21,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:21,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795652246] [2024-11-08 16:04:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:21,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:21,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:21,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:21,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795652246] [2024-11-08 16:04:21,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795652246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:21,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2239936] [2024-11-08 16:04:21,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:21,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:21,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:21,615 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:21,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:04:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:21,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:04:21,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:21,727 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:04:21,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2239936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:21,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:04:21,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2024-11-08 16:04:21,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995353183] [2024-11-08 16:04:21,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:21,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:04:21,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:21,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:04:21,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:04:21,730 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:04:21,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 245 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:21,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:21,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:04:21,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:21,960 INFO L124 PetriNetUnfolderBase]: 856/1844 cut-off events. [2024-11-08 16:04:21,960 INFO L125 PetriNetUnfolderBase]: For 2744/2776 co-relation queries the response was YES. [2024-11-08 16:04:21,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5049 conditions, 1844 events. 856/1844 cut-off events. For 2744/2776 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 10311 event pairs, 596 based on Foata normal form. 62/1719 useless extension candidates. Maximal degree in co-relation 5033. Up to 1262 conditions per place. [2024-11-08 16:04:21,975 INFO L140 encePairwiseOnDemand]: 36/38 looper letters, 36 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2024-11-08 16:04:21,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 315 flow [2024-11-08 16:04:21,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:04:21,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:04:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-11-08 16:04:21,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2024-11-08 16:04:21,977 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 245 flow. Second operand 3 states and 64 transitions. [2024-11-08 16:04:21,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 49 transitions, 315 flow [2024-11-08 16:04:21,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 49 transitions, 304 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-08 16:04:21,985 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 232 flow [2024-11-08 16:04:21,985 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-11-08 16:04:21,986 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2024-11-08 16:04:21,986 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 232 flow [2024-11-08 16:04:21,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:21,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:21,988 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-08 16:04:22,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:04:22,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-08 16:04:22,189 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 16:04:22,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:22,189 INFO L85 PathProgramCache]: Analyzing trace with hash 620787808, now seen corresponding path program 1 times [2024-11-08 16:04:22,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:22,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411239527] [2024-11-08 16:04:22,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:22,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:22,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:22,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411239527] [2024-11-08 16:04:22,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411239527] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:22,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653358060] [2024-11-08 16:04:22,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:22,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:22,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:22,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:22,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:04:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:22,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 16:04:22,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:22,408 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:22,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:22,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:22,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653358060] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:22,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:22,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-08 16:04:22,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274562537] [2024-11-08 16:04:22,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:22,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 16:04:22,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:22,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 16:04:22,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:04:22,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:04:22,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 232 flow. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:22,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:22,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:04:22,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:23,105 INFO L124 PetriNetUnfolderBase]: 1677/3672 cut-off events. [2024-11-08 16:04:23,106 INFO L125 PetriNetUnfolderBase]: For 5962/6122 co-relation queries the response was YES. [2024-11-08 16:04:23,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9794 conditions, 3672 events. 1677/3672 cut-off events. For 5962/6122 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 23328 event pairs, 96 based on Foata normal form. 208/3509 useless extension candidates. Maximal degree in co-relation 9776. Up to 469 conditions per place. [2024-11-08 16:04:23,132 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 151 selfloop transitions, 14 changer transitions 1/178 dead transitions. [2024-11-08 16:04:23,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 178 transitions, 1188 flow [2024-11-08 16:04:23,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 16:04:23,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 16:04:23,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-11-08 16:04:23,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-11-08 16:04:23,134 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 232 flow. Second operand 9 states and 247 transitions. [2024-11-08 16:04:23,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 178 transitions, 1188 flow [2024-11-08 16:04:23,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 178 transitions, 1187 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:04:23,147 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 375 flow [2024-11-08 16:04:23,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=375, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2024-11-08 16:04:23,148 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 34 predicate places. [2024-11-08 16:04:23,148 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 375 flow [2024-11-08 16:04:23,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:23,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:23,149 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:23,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 16:04:23,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 16:04:23,353 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 16:04:23,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:23,354 INFO L85 PathProgramCache]: Analyzing trace with hash -493264798, now seen corresponding path program 1 times [2024-11-08 16:04:23,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:23,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671299617] [2024-11-08 16:04:23,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:23,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:23,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:23,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:23,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671299617] [2024-11-08 16:04:23,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671299617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:23,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770818233] [2024-11-08 16:04:23,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:23,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:23,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:23,441 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:23,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:04:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:23,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:04:23,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:23,567 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:04:23,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770818233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:23,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:04:23,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 16:04:23,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759243728] [2024-11-08 16:04:23,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:23,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:04:23,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:23,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:04:23,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:04:23,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-08 16:04:23,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 375 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:23,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:23,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-08 16:04:23,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:24,277 INFO L124 PetriNetUnfolderBase]: 1900/3967 cut-off events. [2024-11-08 16:04:24,277 INFO L125 PetriNetUnfolderBase]: For 7935/7977 co-relation queries the response was YES. [2024-11-08 16:04:24,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11455 conditions, 3967 events. 1900/3967 cut-off events. For 7935/7977 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 24546 event pairs, 269 based on Foata normal form. 111/3617 useless extension candidates. Maximal degree in co-relation 11430. Up to 904 conditions per place. [2024-11-08 16:04:24,314 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 148 selfloop transitions, 7 changer transitions 2/167 dead transitions. [2024-11-08 16:04:24,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 167 transitions, 1498 flow [2024-11-08 16:04:24,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:04:24,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:04:24,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-11-08 16:04:24,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-11-08 16:04:24,316 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 375 flow. Second operand 6 states and 132 transitions. [2024-11-08 16:04:24,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 167 transitions, 1498 flow [2024-11-08 16:04:24,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 167 transitions, 1441 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-11-08 16:04:24,331 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 371 flow [2024-11-08 16:04:24,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=371, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2024-11-08 16:04:24,332 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 37 predicate places. [2024-11-08 16:04:24,332 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 371 flow [2024-11-08 16:04:24,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:24,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:24,332 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:24,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 16:04:24,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:24,533 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 16:04:24,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:24,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2127038104, now seen corresponding path program 1 times [2024-11-08 16:04:24,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:24,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762186869] [2024-11-08 16:04:24,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:24,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:04:24,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:24,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762186869] [2024-11-08 16:04:24,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762186869] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:24,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625455554] [2024-11-08 16:04:24,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:24,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:24,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:24,628 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:24,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:04:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:24,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:04:24,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:24,728 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:04:24,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:24,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:04:24,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625455554] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:24,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:24,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 16:04:24,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402805604] [2024-11-08 16:04:24,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:24,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 16:04:24,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:24,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 16:04:24,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 16:04:24,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-08 16:04:24,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 371 flow. Second operand has 12 states, 12 states have (on average 15.833333333333334) internal successors, (190), 12 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:24,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:24,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-08 16:04:24,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:26,001 INFO L124 PetriNetUnfolderBase]: 3349/6837 cut-off events. [2024-11-08 16:04:26,001 INFO L125 PetriNetUnfolderBase]: For 15473/15589 co-relation queries the response was YES. [2024-11-08 16:04:26,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20799 conditions, 6837 events. 3349/6837 cut-off events. For 15473/15589 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 45039 event pairs, 647 based on Foata normal form. 243/6505 useless extension candidates. Maximal degree in co-relation 20774. Up to 1879 conditions per place. [2024-11-08 16:04:26,142 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 249 selfloop transitions, 13 changer transitions 6/278 dead transitions. [2024-11-08 16:04:26,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 278 transitions, 2514 flow [2024-11-08 16:04:26,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:04:26,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 16:04:26,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 229 transitions. [2024-11-08 16:04:26,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6026315789473684 [2024-11-08 16:04:26,145 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 371 flow. Second operand 10 states and 229 transitions. [2024-11-08 16:04:26,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 278 transitions, 2514 flow [2024-11-08 16:04:26,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 278 transitions, 2484 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-08 16:04:26,170 INFO L231 Difference]: Finished difference. Result has 82 places, 69 transitions, 439 flow [2024-11-08 16:04:26,170 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=439, PETRI_PLACES=82, PETRI_TRANSITIONS=69} [2024-11-08 16:04:26,171 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 45 predicate places. [2024-11-08 16:04:26,171 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 439 flow [2024-11-08 16:04:26,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.833333333333334) internal successors, (190), 12 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:26,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:26,172 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-08 16:04:26,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 16:04:26,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:26,376 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 16:04:26,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:26,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1830059394, now seen corresponding path program 2 times [2024-11-08 16:04:26,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:26,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718474803] [2024-11-08 16:04:26,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:26,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:26,626 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:26,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:26,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718474803] [2024-11-08 16:04:26,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718474803] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:26,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752533301] [2024-11-08 16:04:26,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:04:26,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:26,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:26,629 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:26,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:04:26,687 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 16:04:26,687 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:04:26,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:04:26,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 16:04:26,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:26,873 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 16:04:26,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752533301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:26,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:26,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-08 16:04:26,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548950294] [2024-11-08 16:04:26,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:26,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 16:04:26,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:26,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 16:04:26,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 16:04:26,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-11-08 16:04:26,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 439 flow. Second operand has 15 states, 15 states have (on average 11.733333333333333) internal successors, (176), 15 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:26,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:26,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-11-08 16:04:26,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:29,362 INFO L124 PetriNetUnfolderBase]: 6536/11274 cut-off events. [2024-11-08 16:04:29,363 INFO L125 PetriNetUnfolderBase]: For 28818/28924 co-relation queries the response was YES. [2024-11-08 16:04:29,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36353 conditions, 11274 events. 6536/11274 cut-off events. For 28818/28924 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 69858 event pairs, 639 based on Foata normal form. 310/10439 useless extension candidates. Maximal degree in co-relation 36326. Up to 2866 conditions per place. [2024-11-08 16:04:29,482 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 323 selfloop transitions, 21 changer transitions 0/350 dead transitions. [2024-11-08 16:04:29,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 350 transitions, 2801 flow [2024-11-08 16:04:29,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:04:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 16:04:29,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 310 transitions. [2024-11-08 16:04:29,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2024-11-08 16:04:29,484 INFO L175 Difference]: Start difference. First operand has 82 places, 69 transitions, 439 flow. Second operand 15 states and 310 transitions. [2024-11-08 16:04:29,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 350 transitions, 2801 flow [2024-11-08 16:04:29,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 350 transitions, 2666 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-11-08 16:04:29,536 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 488 flow [2024-11-08 16:04:29,536 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=488, PETRI_PLACES=90, PETRI_TRANSITIONS=73} [2024-11-08 16:04:29,537 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 53 predicate places. [2024-11-08 16:04:29,537 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 488 flow [2024-11-08 16:04:29,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.733333333333333) internal successors, (176), 15 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:29,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:29,538 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1] [2024-11-08 16:04:29,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 16:04:29,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:29,739 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 16:04:29,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:29,740 INFO L85 PathProgramCache]: Analyzing trace with hash 655610440, now seen corresponding path program 2 times [2024-11-08 16:04:29,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:29,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941902040] [2024-11-08 16:04:29,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:29,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:29,986 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:29,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:29,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941902040] [2024-11-08 16:04:29,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941902040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:29,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102050627] [2024-11-08 16:04:29,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:04:29,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:29,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:29,989 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:29,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 16:04:30,053 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:04:30,053 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:04:30,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 16:04:30,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:30,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:30,304 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:30,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102050627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:30,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:30,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-08 16:04:30,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553019595] [2024-11-08 16:04:30,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:30,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 16:04:30,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:30,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 16:04:30,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-08 16:04:30,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:04:30,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 73 transitions, 488 flow. Second operand has 17 states, 17 states have (on average 17.823529411764707) internal successors, (303), 17 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:30,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:30,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:04:30,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:33,726 INFO L124 PetriNetUnfolderBase]: 9264/19528 cut-off events. [2024-11-08 16:04:33,726 INFO L125 PetriNetUnfolderBase]: For 83656/84374 co-relation queries the response was YES. [2024-11-08 16:04:33,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62490 conditions, 19528 events. 9264/19528 cut-off events. For 83656/84374 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 152408 event pairs, 253 based on Foata normal form. 633/19025 useless extension candidates. Maximal degree in co-relation 62464. Up to 3941 conditions per place. [2024-11-08 16:04:33,885 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 438 selfloop transitions, 58 changer transitions 1/508 dead transitions. [2024-11-08 16:04:33,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 508 transitions, 4159 flow [2024-11-08 16:04:33,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 16:04:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-08 16:04:33,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 487 transitions. [2024-11-08 16:04:33,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7538699690402477 [2024-11-08 16:04:33,888 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 488 flow. Second operand 17 states and 487 transitions. [2024-11-08 16:04:33,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 508 transitions, 4159 flow [2024-11-08 16:04:33,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 508 transitions, 3860 flow, removed 77 selfloop flow, removed 11 redundant places. [2024-11-08 16:04:34,003 INFO L231 Difference]: Finished difference. Result has 109 places, 117 transitions, 1046 flow [2024-11-08 16:04:34,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1046, PETRI_PLACES=109, PETRI_TRANSITIONS=117} [2024-11-08 16:04:34,004 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 72 predicate places. [2024-11-08 16:04:34,004 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 117 transitions, 1046 flow [2024-11-08 16:04:34,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.823529411764707) internal successors, (303), 17 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:34,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:34,005 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:34,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 16:04:34,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:34,206 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 16:04:34,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:34,207 INFO L85 PathProgramCache]: Analyzing trace with hash 211784796, now seen corresponding path program 2 times [2024-11-08 16:04:34,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:34,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879106297] [2024-11-08 16:04:34,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:34,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:34,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:34,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879106297] [2024-11-08 16:04:34,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879106297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:34,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466123839] [2024-11-08 16:04:34,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:04:34,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:34,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:34,608 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:34,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 16:04:34,670 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 16:04:34,670 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:04:34,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:04:34,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:34,811 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-08 16:04:34,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-08 16:04:34,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466123839] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:34,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:34,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-08 16:04:34,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278163108] [2024-11-08 16:04:34,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:34,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 16:04:34,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:34,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 16:04:34,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 16:04:34,994 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-08 16:04:34,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 117 transitions, 1046 flow. Second operand has 15 states, 15 states have (on average 14.2) internal successors, (213), 15 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:34,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:34,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-08 16:04:34,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:39,576 INFO L124 PetriNetUnfolderBase]: 17292/29911 cut-off events. [2024-11-08 16:04:39,576 INFO L125 PetriNetUnfolderBase]: For 109183/111757 co-relation queries the response was YES. [2024-11-08 16:04:40,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97626 conditions, 29911 events. 17292/29911 cut-off events. For 109183/111757 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 209062 event pairs, 1103 based on Foata normal form. 693/28519 useless extension candidates. Maximal degree in co-relation 97586. Up to 5111 conditions per place. [2024-11-08 16:04:40,122 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 655 selfloop transitions, 21 changer transitions 69/752 dead transitions. [2024-11-08 16:04:40,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 752 transitions, 9118 flow [2024-11-08 16:04:40,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:04:40,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 16:04:40,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 301 transitions. [2024-11-08 16:04:40,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5280701754385965 [2024-11-08 16:04:40,124 INFO L175 Difference]: Start difference. First operand has 109 places, 117 transitions, 1046 flow. Second operand 15 states and 301 transitions. [2024-11-08 16:04:40,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 752 transitions, 9118 flow [2024-11-08 16:04:40,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 752 transitions, 8236 flow, removed 386 selfloop flow, removed 8 redundant places. [2024-11-08 16:04:40,342 INFO L231 Difference]: Finished difference. Result has 115 places, 113 transitions, 971 flow [2024-11-08 16:04:40,342 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=971, PETRI_PLACES=115, PETRI_TRANSITIONS=113} [2024-11-08 16:04:40,343 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 78 predicate places. [2024-11-08 16:04:40,343 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 113 transitions, 971 flow [2024-11-08 16:04:40,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.2) internal successors, (213), 15 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:40,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:40,344 INFO L204 CegarLoopForPetriNet]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1] [2024-11-08 16:04:40,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 16:04:40,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:40,545 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 16:04:40,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:40,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1375919640, now seen corresponding path program 3 times [2024-11-08 16:04:40,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:40,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795366098] [2024-11-08 16:04:40,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:40,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:41,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:41,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795366098] [2024-11-08 16:04:41,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795366098] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:41,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111547744] [2024-11-08 16:04:41,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:04:41,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:41,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:41,152 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:41,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 16:04:41,249 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-08 16:04:41,249 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:04:41,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-08 16:04:41,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:41,426 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:41,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:41,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111547744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:41,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:41,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2024-11-08 16:04:41,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068794337] [2024-11-08 16:04:41,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:41,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 16:04:41,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:41,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 16:04:41,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 16:04:41,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:04:41,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 113 transitions, 971 flow. Second operand has 33 states, 33 states have (on average 17.90909090909091) internal successors, (591), 33 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:41,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:41,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:04:41,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:50,519 INFO L124 PetriNetUnfolderBase]: 19537/48401 cut-off events. [2024-11-08 16:04:50,519 INFO L125 PetriNetUnfolderBase]: For 376299/378881 co-relation queries the response was YES. [2024-11-08 16:04:50,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147179 conditions, 48401 events. 19537/48401 cut-off events. For 376299/378881 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 450073 event pairs, 255 based on Foata normal form. 1378/46534 useless extension candidates. Maximal degree in co-relation 147144. Up to 6468 conditions per place. [2024-11-08 16:04:50,925 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 854 selfloop transitions, 214 changer transitions 0/1079 dead transitions. [2024-11-08 16:04:50,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 1079 transitions, 9881 flow [2024-11-08 16:04:50,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 16:04:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-08 16:04:50,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 903 transitions. [2024-11-08 16:04:50,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7200956937799043 [2024-11-08 16:04:50,929 INFO L175 Difference]: Start difference. First operand has 115 places, 113 transitions, 971 flow. Second operand 33 states and 903 transitions. [2024-11-08 16:04:50,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 1079 transitions, 9881 flow [2024-11-08 16:04:51,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 1079 transitions, 8230 flow, removed 217 selfloop flow, removed 12 redundant places. [2024-11-08 16:04:51,205 INFO L231 Difference]: Finished difference. Result has 163 places, 269 transitions, 3058 flow [2024-11-08 16:04:51,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3058, PETRI_PLACES=163, PETRI_TRANSITIONS=269} [2024-11-08 16:04:51,206 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 126 predicate places. [2024-11-08 16:04:51,206 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 269 transitions, 3058 flow [2024-11-08 16:04:51,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 17.90909090909091) internal successors, (591), 33 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:51,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:51,207 INFO L204 CegarLoopForPetriNet]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1, 1, 1] [2024-11-08 16:04:51,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 16:04:51,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 16:04:51,412 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 16:04:51,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:51,412 INFO L85 PathProgramCache]: Analyzing trace with hash 660755896, now seen corresponding path program 4 times [2024-11-08 16:04:51,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:51,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211769176] [2024-11-08 16:04:51,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:51,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:53,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:53,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211769176] [2024-11-08 16:04:53,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211769176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:53,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600559121] [2024-11-08 16:04:53,705 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:04:53,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:53,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:53,707 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:53,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48125c5a-da9f-47ae-808e-73d1213d5826/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 16:04:53,856 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:04:53,857 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:04:53,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-08 16:04:53,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:54,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:54,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:56,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:56,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600559121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:56,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:56,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 63 [2024-11-08 16:04:56,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202709755] [2024-11-08 16:04:56,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:56,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-08 16:04:56,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:56,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-08 16:04:56,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-11-08 16:04:56,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 16:04:56,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 269 transitions, 3058 flow. Second operand has 65 states, 65 states have (on average 17.953846153846154) internal successors, (1167), 65 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:56,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:56,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 16:04:56,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand