./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:13:03,181 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:13:03,279 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 13:13:03,284 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:13:03,284 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:13:03,318 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:13:03,319 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:13:03,320 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:13:03,321 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:13:03,321 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:13:03,321 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:13:03,321 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:13:03,322 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:13:03,322 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:13:03,322 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:13:03,322 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:13:03,322 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:13:03,323 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:13:03,323 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:13:03,323 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:13:03,323 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:13:03,323 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:13:03,323 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:13:03,323 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:13:03,323 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:13:03,323 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 13:13:03,323 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:13:03,323 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:13:03,324 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:13:03,324 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:13:03,326 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:13:03,326 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:13:03,326 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:13:03,326 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:13:03,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:13:03,326 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:13:03,327 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:13:03,327 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:13:03,328 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:13:03,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:13:03,328 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:13:03,328 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:13:03,328 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:13:03,328 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:13:03,329 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 [2024-11-13 13:13:03,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:13:03,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:13:03,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:13:03,660 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:13:03,660 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:13:03,662 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c Unable to find full path for "g++" [2024-11-13 13:13:05,658 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:13:05,958 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:13:05,960 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-13 13:13:05,971 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/data/0b6837843/68a3c4283caf454e831308afddad98ea/FLAGb0bce680e [2024-11-13 13:13:06,000 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/data/0b6837843/68a3c4283caf454e831308afddad98ea [2024-11-13 13:13:06,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:13:06,005 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:13:06,006 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:13:06,006 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:13:06,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:13:06,014 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:13:06" (1/1) ... [2024-11-13 13:13:06,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b68aae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:06, skipping insertion in model container [2024-11-13 13:13:06,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:13:06" (1/1) ... [2024-11-13 13:13:06,043 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:13:06,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:13:06,303 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:13:06,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:13:06,362 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:13:06,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:06 WrapperNode [2024-11-13 13:13:06,363 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:13:06,365 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:13:06,365 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:13:06,367 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:13:06,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:06" (1/1) ... [2024-11-13 13:13:06,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:06" (1/1) ... [2024-11-13 13:13:06,413 INFO L138 Inliner]: procedures = 23, calls = 21, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 113 [2024-11-13 13:13:06,416 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:13:06,417 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:13:06,419 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:13:06,419 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:13:06,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:06" (1/1) ... [2024-11-13 13:13:06,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:06" (1/1) ... [2024-11-13 13:13:06,432 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:06" (1/1) ... [2024-11-13 13:13:06,468 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-13 13:13:06,469 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:06" (1/1) ... [2024-11-13 13:13:06,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:06" (1/1) ... [2024-11-13 13:13:06,483 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:06" (1/1) ... [2024-11-13 13:13:06,492 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:06" (1/1) ... [2024-11-13 13:13:06,494 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:06" (1/1) ... [2024-11-13 13:13:06,495 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:06" (1/1) ... [2024-11-13 13:13:06,501 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:13:06,503 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:13:06,507 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:13:06,507 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:13:06,508 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:06" (1/1) ... [2024-11-13 13:13:06,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:13:06,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:06,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:13:06,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:13:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:13:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 13:13:06,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 13:13:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 13:13:06,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 13:13:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 13:13:06,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 13:13:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:13:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:13:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:13:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 13:13:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 13:13:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:13:06,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:13:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:13:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 13:13:06,584 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 13:13:06,712 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:13:06,715 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:13:07,214 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:13:07,217 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:13:07,503 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:13:07,505 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-13 13:13:07,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:13:07 BoogieIcfgContainer [2024-11-13 13:13:07,506 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:13:07,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:13:07,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:13:07,513 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:13:07,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:13:06" (1/3) ... [2024-11-13 13:13:07,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39798b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:13:07, skipping insertion in model container [2024-11-13 13:13:07,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:06" (2/3) ... [2024-11-13 13:13:07,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39798b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:13:07, skipping insertion in model container [2024-11-13 13:13:07,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:13:07" (3/3) ... [2024-11-13 13:13:07,518 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-11-13 13:13:07,538 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:13:07,539 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-simple-array-sum.wvr.c that has 4 procedures, 54 locations, 1 initial locations, 5 loop locations, and 10 error locations. [2024-11-13 13:13:07,540 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:13:07,631 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 13:13:07,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 139 flow [2024-11-13 13:13:07,749 INFO L124 PetriNetUnfolderBase]: 6/56 cut-off events. [2024-11-13 13:13:07,754 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 13:13:07,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 56 events. 6/56 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 127 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 42. Up to 3 conditions per place. [2024-11-13 13:13:07,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 59 transitions, 139 flow [2024-11-13 13:13:07,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 54 transitions, 123 flow [2024-11-13 13:13:07,779 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:13:07,798 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;@3c31316, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:13:07,799 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-13 13:13:07,809 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:13:07,809 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-13 13:13:07,809 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:13:07,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:07,812 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:13:07,813 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:07,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:07,820 INFO L85 PathProgramCache]: Analyzing trace with hash 492076, now seen corresponding path program 1 times [2024-11-13 13:13:07,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:07,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324704332] [2024-11-13 13:13:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:07,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:08,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:08,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324704332] [2024-11-13 13:13:08,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324704332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:08,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:08,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:13:08,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840527861] [2024-11-13 13:13:08,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:08,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:13:08,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:08,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:13:08,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:13:08,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-13 13:13:08,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:08,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:08,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-13 13:13:08,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:08,793 INFO L124 PetriNetUnfolderBase]: 835/1761 cut-off events. [2024-11-13 13:13:08,793 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-11-13 13:13:08,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3006 conditions, 1761 events. 835/1761 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 11206 event pairs, 608 based on Foata normal form. 2/1550 useless extension candidates. Maximal degree in co-relation 2759. Up to 1144 conditions per place. [2024-11-13 13:13:08,818 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 33 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2024-11-13 13:13:08,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 215 flow [2024-11-13 13:13:08,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:13:08,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:13:08,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-11-13 13:13:08,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.576271186440678 [2024-11-13 13:13:08,840 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 123 flow. Second operand 4 states and 136 transitions. [2024-11-13 13:13:08,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 215 flow [2024-11-13 13:13:08,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 206 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-13 13:13:08,862 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 174 flow [2024-11-13 13:13:08,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2024-11-13 13:13:08,871 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2024-11-13 13:13:08,871 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 174 flow [2024-11-13 13:13:08,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:08,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:08,872 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-13 13:13:08,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:13:08,873 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:08,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:08,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1775014772, now seen corresponding path program 1 times [2024-11-13 13:13:08,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:08,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811771808] [2024-11-13 13:13:08,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:08,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:09,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:09,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811771808] [2024-11-13 13:13:09,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811771808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:09,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081842654] [2024-11-13 13:13:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:09,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:09,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:09,076 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:09,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:13:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:09,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:13:09,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:09,253 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:13:09,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081842654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:09,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:13:09,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-13 13:13:09,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117933646] [2024-11-13 13:13:09,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:09,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:13:09,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:09,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:13:09,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:13:09,290 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-13 13:13:09,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:09,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:09,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-13 13:13:09,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:09,813 INFO L124 PetriNetUnfolderBase]: 835/1759 cut-off events. [2024-11-13 13:13:09,813 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-13 13:13:09,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2988 conditions, 1759 events. 835/1759 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 11201 event pairs, 608 based on Foata normal form. 2/1551 useless extension candidates. Maximal degree in co-relation 2938. Up to 1134 conditions per place. [2024-11-13 13:13:09,831 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 26 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-11-13 13:13:09,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 242 flow [2024-11-13 13:13:09,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:13:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:13:09,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-11-13 13:13:09,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5028248587570622 [2024-11-13 13:13:09,834 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 174 flow. Second operand 6 states and 178 transitions. [2024-11-13 13:13:09,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 242 flow [2024-11-13 13:13:09,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 242 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:13:09,838 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 190 flow [2024-11-13 13:13:09,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-13 13:13:09,839 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2024-11-13 13:13:09,839 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 190 flow [2024-11-13 13:13:09,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:09,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:09,840 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-13 13:13:09,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 13:13:10,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-13 13:13:10,041 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:10,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:10,042 INFO L85 PathProgramCache]: Analyzing trace with hash -809116433, now seen corresponding path program 1 times [2024-11-13 13:13:10,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:10,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377991361] [2024-11-13 13:13:10,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:10,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:10,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:10,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377991361] [2024-11-13 13:13:10,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377991361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:10,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536833530] [2024-11-13 13:13:10,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:10,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:10,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:10,239 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:10,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:13:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:10,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:13:10,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:10,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:10,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536833530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:10,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:10,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-13 13:13:10,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029208195] [2024-11-13 13:13:10,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:10,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 13:13:10,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:10,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 13:13:10,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:13:10,496 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-13 13:13:10,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 190 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:10,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:10,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-13 13:13:10,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:10,963 INFO L124 PetriNetUnfolderBase]: 841/1783 cut-off events. [2024-11-13 13:13:10,963 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-13 13:13:10,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3082 conditions, 1783 events. 841/1783 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 11419 event pairs, 608 based on Foata normal form. 6/1578 useless extension candidates. Maximal degree in co-relation 2940. Up to 1145 conditions per place. [2024-11-13 13:13:10,980 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 31 selfloop transitions, 25 changer transitions 0/76 dead transitions. [2024-11-13 13:13:10,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 76 transitions, 416 flow [2024-11-13 13:13:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:13:10,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 13:13:10,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 292 transitions. [2024-11-13 13:13:10,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49491525423728816 [2024-11-13 13:13:10,986 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 190 flow. Second operand 10 states and 292 transitions. [2024-11-13 13:13:10,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 76 transitions, 416 flow [2024-11-13 13:13:10,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 358 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-13 13:13:10,991 INFO L231 Difference]: Finished difference. Result has 69 places, 76 transitions, 330 flow [2024-11-13 13:13:10,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=330, PETRI_PLACES=69, PETRI_TRANSITIONS=76} [2024-11-13 13:13:10,992 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2024-11-13 13:13:10,992 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 76 transitions, 330 flow [2024-11-13 13:13:10,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:10,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:10,993 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:11,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 13:13:11,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:11,197 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:11,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:11,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1859781997, now seen corresponding path program 1 times [2024-11-13 13:13:11,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:11,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436338676] [2024-11-13 13:13:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:11,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:11,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:11,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436338676] [2024-11-13 13:13:11,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436338676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:11,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:11,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:13:11,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567822072] [2024-11-13 13:13:11,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:11,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:13:11,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:11,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:13:11,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:13:11,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-13 13:13:11,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 76 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:11,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:11,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-13 13:13:11,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:11,844 INFO L124 PetriNetUnfolderBase]: 1630/2936 cut-off events. [2024-11-13 13:13:11,844 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-11-13 13:13:11,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5408 conditions, 2936 events. 1630/2936 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 17869 event pairs, 858 based on Foata normal form. 62/2697 useless extension candidates. Maximal degree in co-relation 5341. Up to 1643 conditions per place. [2024-11-13 13:13:11,869 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 86 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2024-11-13 13:13:11,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 584 flow [2024-11-13 13:13:11,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:13:11,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:13:11,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-13 13:13:11,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.711864406779661 [2024-11-13 13:13:11,871 INFO L175 Difference]: Start difference. First operand has 69 places, 76 transitions, 330 flow. Second operand 4 states and 168 transitions. [2024-11-13 13:13:11,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 584 flow [2024-11-13 13:13:11,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 110 transitions, 560 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-13 13:13:11,880 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 335 flow [2024-11-13 13:13:11,881 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=335, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2024-11-13 13:13:11,882 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2024-11-13 13:13:11,883 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 335 flow [2024-11-13 13:13:11,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:11,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:11,884 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:11,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:13:11,884 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:11,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:11,886 INFO L85 PathProgramCache]: Analyzing trace with hash 311399620, now seen corresponding path program 1 times [2024-11-13 13:13:11,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:11,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749604855] [2024-11-13 13:13:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:11,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:13:12,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:12,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749604855] [2024-11-13 13:13:12,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749604855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:12,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:12,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:13:12,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294356657] [2024-11-13 13:13:12,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:12,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:13:12,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:12,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:13:12,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:13:12,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-13 13:13:12,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 335 flow. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:12,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:12,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-13 13:13:12,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:12,786 INFO L124 PetriNetUnfolderBase]: 2120/4415 cut-off events. [2024-11-13 13:13:12,789 INFO L125 PetriNetUnfolderBase]: For 909/909 co-relation queries the response was YES. [2024-11-13 13:13:12,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8494 conditions, 4415 events. 2120/4415 cut-off events. For 909/909 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 31827 event pairs, 1466 based on Foata normal form. 63/4077 useless extension candidates. Maximal degree in co-relation 8427. Up to 2261 conditions per place. [2024-11-13 13:13:12,823 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 82 selfloop transitions, 12 changer transitions 0/115 dead transitions. [2024-11-13 13:13:12,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 115 transitions, 613 flow [2024-11-13 13:13:12,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:13:12,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:13:12,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-11-13 13:13:12,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.652542372881356 [2024-11-13 13:13:12,825 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 335 flow. Second operand 6 states and 231 transitions. [2024-11-13 13:13:12,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 115 transitions, 613 flow [2024-11-13 13:13:12,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 115 transitions, 608 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:13:12,833 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 385 flow [2024-11-13 13:13:12,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=385, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2024-11-13 13:13:12,836 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 21 predicate places. [2024-11-13 13:13:12,836 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 385 flow [2024-11-13 13:13:12,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:12,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:12,836 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:12,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:13:12,836 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:12,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:12,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1745183800, now seen corresponding path program 1 times [2024-11-13 13:13:12,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:12,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039992321] [2024-11-13 13:13:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:12,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:12,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:12,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:12,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039992321] [2024-11-13 13:13:12,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039992321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:12,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:12,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:13:12,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253549844] [2024-11-13 13:13:12,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:12,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:13:12,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:12,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:13:12,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:13:12,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-13 13:13:12,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:12,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:12,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-13 13:13:12,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:14,124 INFO L124 PetriNetUnfolderBase]: 4285/7618 cut-off events. [2024-11-13 13:13:14,125 INFO L125 PetriNetUnfolderBase]: For 3519/3687 co-relation queries the response was YES. [2024-11-13 13:13:14,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16613 conditions, 7618 events. 4285/7618 cut-off events. For 3519/3687 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 51339 event pairs, 2214 based on Foata normal form. 142/7490 useless extension candidates. Maximal degree in co-relation 16542. Up to 4089 conditions per place. [2024-11-13 13:13:14,207 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 102 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2024-11-13 13:13:14,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 125 transitions, 753 flow [2024-11-13 13:13:14,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:13:14,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:13:14,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-13 13:13:14,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6949152542372882 [2024-11-13 13:13:14,208 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 385 flow. Second operand 4 states and 164 transitions. [2024-11-13 13:13:14,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 125 transitions, 753 flow [2024-11-13 13:13:14,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 125 transitions, 735 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-13 13:13:14,221 INFO L231 Difference]: Finished difference. Result has 82 places, 85 transitions, 396 flow [2024-11-13 13:13:14,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=396, PETRI_PLACES=82, PETRI_TRANSITIONS=85} [2024-11-13 13:13:14,223 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2024-11-13 13:13:14,224 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 85 transitions, 396 flow [2024-11-13 13:13:14,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:14,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:14,224 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:14,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:13:14,224 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:14,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:14,225 INFO L85 PathProgramCache]: Analyzing trace with hash 791050341, now seen corresponding path program 1 times [2024-11-13 13:13:14,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:14,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870662438] [2024-11-13 13:13:14,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:14,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:14,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:14,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870662438] [2024-11-13 13:13:14,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870662438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:14,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:14,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:13:14,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841922540] [2024-11-13 13:13:14,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:14,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:13:14,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:14,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:13:14,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:13:14,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-13 13:13:14,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 85 transitions, 396 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:14,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:14,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-13 13:13:14,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:15,305 INFO L124 PetriNetUnfolderBase]: 3544/6855 cut-off events. [2024-11-13 13:13:15,306 INFO L125 PetriNetUnfolderBase]: For 4088/4404 co-relation queries the response was YES. [2024-11-13 13:13:15,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15889 conditions, 6855 events. 3544/6855 cut-off events. For 4088/4404 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 48482 event pairs, 695 based on Foata normal form. 170/6851 useless extension candidates. Maximal degree in co-relation 15817. Up to 3503 conditions per place. [2024-11-13 13:13:15,428 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 96 selfloop transitions, 4 changer transitions 2/123 dead transitions. [2024-11-13 13:13:15,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 123 transitions, 752 flow [2024-11-13 13:13:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:13:15,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:13:15,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-11-13 13:13:15,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6864406779661016 [2024-11-13 13:13:15,430 INFO L175 Difference]: Start difference. First operand has 82 places, 85 transitions, 396 flow. Second operand 4 states and 162 transitions. [2024-11-13 13:13:15,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 123 transitions, 752 flow [2024-11-13 13:13:15,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 123 transitions, 747 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:13:15,441 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 418 flow [2024-11-13 13:13:15,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=418, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2024-11-13 13:13:15,442 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2024-11-13 13:13:15,442 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 418 flow [2024-11-13 13:13:15,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:15,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:15,443 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-13 13:13:15,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:13:15,443 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:15,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:15,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1271820489, now seen corresponding path program 2 times [2024-11-13 13:13:15,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:15,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36290456] [2024-11-13 13:13:15,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:15,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:15,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:15,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36290456] [2024-11-13 13:13:15,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36290456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:15,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820813258] [2024-11-13 13:13:15,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:13:15,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:15,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:15,690 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:15,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:13:15,775 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 13:13:15,775 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:13:15,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:13:15,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 13:13:15,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:15,883 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 13:13:15,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820813258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:15,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:15,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-13 13:13:15,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094721733] [2024-11-13 13:13:15,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:15,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 13:13:15,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:15,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 13:13:15,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:13:15,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-13 13:13:15,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 418 flow. Second operand has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:15,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:15,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-13 13:13:15,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:16,932 INFO L124 PetriNetUnfolderBase]: 2679/5101 cut-off events. [2024-11-13 13:13:16,932 INFO L125 PetriNetUnfolderBase]: For 3144/3401 co-relation queries the response was YES. [2024-11-13 13:13:16,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12331 conditions, 5101 events. 2679/5101 cut-off events. For 3144/3401 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 33676 event pairs, 2011 based on Foata normal form. 112/4988 useless extension candidates. Maximal degree in co-relation 12234. Up to 3793 conditions per place. [2024-11-13 13:13:16,983 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 35 selfloop transitions, 35 changer transitions 0/93 dead transitions. [2024-11-13 13:13:16,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 93 transitions, 587 flow [2024-11-13 13:13:16,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 13:13:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-13 13:13:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 616 transitions. [2024-11-13 13:13:16,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4350282485875706 [2024-11-13 13:13:16,987 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 418 flow. Second operand 24 states and 616 transitions. [2024-11-13 13:13:16,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 93 transitions, 587 flow [2024-11-13 13:13:16,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 93 transitions, 587 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:13:17,001 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 530 flow [2024-11-13 13:13:17,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=530, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2024-11-13 13:13:17,003 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 52 predicate places. [2024-11-13 13:13:17,004 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 530 flow [2024-11-13 13:13:17,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:17,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:17,005 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:17,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:13:17,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:17,205 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:17,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:17,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1196719303, now seen corresponding path program 1 times [2024-11-13 13:13:17,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:17,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962750479] [2024-11-13 13:13:17,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:17,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:13:17,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:17,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962750479] [2024-11-13 13:13:17,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962750479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:17,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137563325] [2024-11-13 13:13:17,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:17,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:17,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:17,345 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:17,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:13:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:17,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 13:13:17,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:17,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:13:17,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:13:17,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137563325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:17,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:17,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-13 13:13:17,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431595733] [2024-11-13 13:13:17,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:17,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 13:13:17,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:17,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 13:13:17,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-13 13:13:18,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2024-11-13 13:13:18,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 530 flow. Second operand has 19 states, 19 states have (on average 22.31578947368421) internal successors, (424), 19 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:18,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:18,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2024-11-13 13:13:18,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:19,928 INFO L124 PetriNetUnfolderBase]: 4967/8555 cut-off events. [2024-11-13 13:13:19,928 INFO L125 PetriNetUnfolderBase]: For 4652/5071 co-relation queries the response was YES. [2024-11-13 13:13:19,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21288 conditions, 8555 events. 4967/8555 cut-off events. For 4652/5071 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 56101 event pairs, 1089 based on Foata normal form. 376/8577 useless extension candidates. Maximal degree in co-relation 21194. Up to 1527 conditions per place. [2024-11-13 13:13:20,003 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 196 selfloop transitions, 51 changer transitions 0/267 dead transitions. [2024-11-13 13:13:20,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 267 transitions, 1676 flow [2024-11-13 13:13:20,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 13:13:20,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-13 13:13:20,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 532 transitions. [2024-11-13 13:13:20,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5304087736789631 [2024-11-13 13:13:20,006 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 530 flow. Second operand 17 states and 532 transitions. [2024-11-13 13:13:20,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 267 transitions, 1676 flow [2024-11-13 13:13:20,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 267 transitions, 1552 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-11-13 13:13:20,033 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 719 flow [2024-11-13 13:13:20,033 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=719, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2024-11-13 13:13:20,034 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 60 predicate places. [2024-11-13 13:13:20,034 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 719 flow [2024-11-13 13:13:20,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 22.31578947368421) internal successors, (424), 19 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:20,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:20,035 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:20,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 13:13:20,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:20,235 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:20,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:20,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1479666558, now seen corresponding path program 1 times [2024-11-13 13:13:20,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:20,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331316748] [2024-11-13 13:13:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:20,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:20,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:20,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:20,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331316748] [2024-11-13 13:13:20,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331316748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:20,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:20,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:13:20,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943774913] [2024-11-13 13:13:20,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:20,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:13:20,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:20,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:13:20,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:13:20,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-13 13:13:20,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 719 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:20,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:20,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-13 13:13:20,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:21,668 INFO L124 PetriNetUnfolderBase]: 7141/13095 cut-off events. [2024-11-13 13:13:21,669 INFO L125 PetriNetUnfolderBase]: For 15895/16562 co-relation queries the response was YES. [2024-11-13 13:13:21,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35096 conditions, 13095 events. 7141/13095 cut-off events. For 15895/16562 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 99017 event pairs, 2390 based on Foata normal form. 447/13375 useless extension candidates. Maximal degree in co-relation 34998. Up to 5871 conditions per place. [2024-11-13 13:13:21,912 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 177 selfloop transitions, 11 changer transitions 0/207 dead transitions. [2024-11-13 13:13:21,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 207 transitions, 1639 flow [2024-11-13 13:13:21,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:13:21,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:13:21,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2024-11-13 13:13:21,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6864406779661016 [2024-11-13 13:13:21,914 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 719 flow. Second operand 6 states and 243 transitions. [2024-11-13 13:13:21,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 207 transitions, 1639 flow [2024-11-13 13:13:21,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 207 transitions, 1497 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-11-13 13:13:21,961 INFO L231 Difference]: Finished difference. Result has 124 places, 118 transitions, 774 flow [2024-11-13 13:13:21,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=774, PETRI_PLACES=124, PETRI_TRANSITIONS=118} [2024-11-13 13:13:21,962 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 66 predicate places. [2024-11-13 13:13:21,962 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 118 transitions, 774 flow [2024-11-13 13:13:21,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:21,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:21,962 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:21,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 13:13:21,963 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:21,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:21,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2118764008, now seen corresponding path program 2 times [2024-11-13 13:13:21,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:21,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782225174] [2024-11-13 13:13:21,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:21,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:22,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:22,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782225174] [2024-11-13 13:13:22,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782225174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:22,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:22,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:13:22,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114263133] [2024-11-13 13:13:22,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:22,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:13:22,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:22,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:13:22,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:13:22,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-13 13:13:22,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 118 transitions, 774 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:22,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:22,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-13 13:13:22,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:24,210 INFO L124 PetriNetUnfolderBase]: 10352/18599 cut-off events. [2024-11-13 13:13:24,210 INFO L125 PetriNetUnfolderBase]: For 22498/23978 co-relation queries the response was YES. [2024-11-13 13:13:24,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49484 conditions, 18599 events. 10352/18599 cut-off events. For 22498/23978 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 142818 event pairs, 3846 based on Foata normal form. 633/18632 useless extension candidates. Maximal degree in co-relation 49382. Up to 6352 conditions per place. [2024-11-13 13:13:24,336 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 180 selfloop transitions, 11 changer transitions 0/210 dead transitions. [2024-11-13 13:13:24,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 210 transitions, 1591 flow [2024-11-13 13:13:24,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:13:24,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:13:24,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 237 transitions. [2024-11-13 13:13:24,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6694915254237288 [2024-11-13 13:13:24,338 INFO L175 Difference]: Start difference. First operand has 124 places, 118 transitions, 774 flow. Second operand 6 states and 237 transitions. [2024-11-13 13:13:24,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 210 transitions, 1591 flow [2024-11-13 13:13:24,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 210 transitions, 1580 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 13:13:24,411 INFO L231 Difference]: Finished difference. Result has 132 places, 123 transitions, 846 flow [2024-11-13 13:13:24,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=846, PETRI_PLACES=132, PETRI_TRANSITIONS=123} [2024-11-13 13:13:24,412 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 74 predicate places. [2024-11-13 13:13:24,412 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 123 transitions, 846 flow [2024-11-13 13:13:24,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:24,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:24,413 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:24,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 13:13:24,413 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:24,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:24,414 INFO L85 PathProgramCache]: Analyzing trace with hash -798506284, now seen corresponding path program 3 times [2024-11-13 13:13:24,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:24,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583232335] [2024-11-13 13:13:24,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:24,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:24,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:24,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583232335] [2024-11-13 13:13:24,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583232335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:24,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:24,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:13:24,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007444431] [2024-11-13 13:13:24,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:24,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:13:24,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:24,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:13:24,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:13:24,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-13 13:13:24,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 123 transitions, 846 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:24,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:24,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-13 13:13:24,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:26,622 INFO L124 PetriNetUnfolderBase]: 10824/19607 cut-off events. [2024-11-13 13:13:26,623 INFO L125 PetriNetUnfolderBase]: For 37345/38671 co-relation queries the response was YES. [2024-11-13 13:13:26,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54204 conditions, 19607 events. 10824/19607 cut-off events. For 37345/38671 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 148656 event pairs, 2241 based on Foata normal form. 336/19420 useless extension candidates. Maximal degree in co-relation 54098. Up to 7910 conditions per place. [2024-11-13 13:13:26,770 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 173 selfloop transitions, 18 changer transitions 1/211 dead transitions. [2024-11-13 13:13:26,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 211 transitions, 1640 flow [2024-11-13 13:13:26,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:13:26,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:13:26,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 241 transitions. [2024-11-13 13:13:26,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6807909604519774 [2024-11-13 13:13:26,772 INFO L175 Difference]: Start difference. First operand has 132 places, 123 transitions, 846 flow. Second operand 6 states and 241 transitions. [2024-11-13 13:13:26,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 211 transitions, 1640 flow [2024-11-13 13:13:26,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 211 transitions, 1619 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-13 13:13:26,849 INFO L231 Difference]: Finished difference. Result has 138 places, 125 transitions, 911 flow [2024-11-13 13:13:26,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=911, PETRI_PLACES=138, PETRI_TRANSITIONS=125} [2024-11-13 13:13:26,850 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 80 predicate places. [2024-11-13 13:13:26,850 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 125 transitions, 911 flow [2024-11-13 13:13:26,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:26,850 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:26,851 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:26,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 13:13:26,851 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:26,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:26,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1812728770, now seen corresponding path program 1 times [2024-11-13 13:13:26,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:26,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825687107] [2024-11-13 13:13:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:26,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:27,020 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:13:27,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:27,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825687107] [2024-11-13 13:13:27,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825687107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:27,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:27,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:13:27,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313448540] [2024-11-13 13:13:27,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:27,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:13:27,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:27,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:13:27,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:13:27,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-13 13:13:27,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 125 transitions, 911 flow. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:27,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:27,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-13 13:13:27,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:28,781 INFO L124 PetriNetUnfolderBase]: 9282/16803 cut-off events. [2024-11-13 13:13:28,781 INFO L125 PetriNetUnfolderBase]: For 30083/31157 co-relation queries the response was YES. [2024-11-13 13:13:28,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46330 conditions, 16803 events. 9282/16803 cut-off events. For 30083/31157 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 122225 event pairs, 7287 based on Foata normal form. 147/16412 useless extension candidates. Maximal degree in co-relation 46222. Up to 12748 conditions per place. [2024-11-13 13:13:28,906 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 83 selfloop transitions, 9 changer transitions 29/148 dead transitions. [2024-11-13 13:13:28,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 148 transitions, 1293 flow [2024-11-13 13:13:28,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:13:28,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:13:28,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-11-13 13:13:28,908 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6129943502824858 [2024-11-13 13:13:28,908 INFO L175 Difference]: Start difference. First operand has 138 places, 125 transitions, 911 flow. Second operand 6 states and 217 transitions. [2024-11-13 13:13:28,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 148 transitions, 1293 flow [2024-11-13 13:13:29,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 148 transitions, 1237 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-13 13:13:29,158 INFO L231 Difference]: Finished difference. Result has 141 places, 119 transitions, 850 flow [2024-11-13 13:13:29,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=850, PETRI_PLACES=141, PETRI_TRANSITIONS=119} [2024-11-13 13:13:29,159 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 83 predicate places. [2024-11-13 13:13:29,159 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 119 transitions, 850 flow [2024-11-13 13:13:29,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:29,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:29,159 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:29,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 13:13:29,159 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:29,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:29,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1735308299, now seen corresponding path program 1 times [2024-11-13 13:13:29,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:29,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928922925] [2024-11-13 13:13:29,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:29,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 13:13:29,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:29,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928922925] [2024-11-13 13:13:29,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928922925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:29,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504989360] [2024-11-13 13:13:29,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:29,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:29,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:29,463 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:29,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:13:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:29,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 13:13:29,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 13:13:29,698 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:29,860 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 13:13:29,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504989360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:29,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:29,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-13 13:13:29,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367705876] [2024-11-13 13:13:29,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:29,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 13:13:29,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:29,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 13:13:29,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-13 13:13:30,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-13 13:13:30,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 119 transitions, 850 flow. Second operand has 19 states, 19 states have (on average 24.210526315789473) internal successors, (460), 19 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:30,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:30,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-13 13:13:30,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:32,361 INFO L124 PetriNetUnfolderBase]: 8120/15464 cut-off events. [2024-11-13 13:13:32,361 INFO L125 PetriNetUnfolderBase]: For 24569/25743 co-relation queries the response was YES. [2024-11-13 13:13:32,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41468 conditions, 15464 events. 8120/15464 cut-off events. For 24569/25743 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 119629 event pairs, 6514 based on Foata normal form. 28/14948 useless extension candidates. Maximal degree in co-relation 41394. Up to 6767 conditions per place. [2024-11-13 13:13:32,465 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 82 selfloop transitions, 32 changer transitions 1/142 dead transitions. [2024-11-13 13:13:32,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 142 transitions, 1191 flow [2024-11-13 13:13:32,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:13:32,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 13:13:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 298 transitions. [2024-11-13 13:13:32,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5050847457627119 [2024-11-13 13:13:32,467 INFO L175 Difference]: Start difference. First operand has 141 places, 119 transitions, 850 flow. Second operand 10 states and 298 transitions. [2024-11-13 13:13:32,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 142 transitions, 1191 flow [2024-11-13 13:13:32,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 142 transitions, 1066 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-11-13 13:13:32,520 INFO L231 Difference]: Finished difference. Result has 133 places, 110 transitions, 717 flow [2024-11-13 13:13:32,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=717, PETRI_PLACES=133, PETRI_TRANSITIONS=110} [2024-11-13 13:13:32,521 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 75 predicate places. [2024-11-13 13:13:32,521 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 110 transitions, 717 flow [2024-11-13 13:13:32,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 24.210526315789473) internal successors, (460), 19 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:32,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:32,522 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 2, 2, 2, 1, 1, 1] [2024-11-13 13:13:32,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:13:32,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:32,722 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:32,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:32,723 INFO L85 PathProgramCache]: Analyzing trace with hash -268021421, now seen corresponding path program 2 times [2024-11-13 13:13:32,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:32,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37460557] [2024-11-13 13:13:32,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:32,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:33,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:33,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37460557] [2024-11-13 13:13:33,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37460557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:33,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053935327] [2024-11-13 13:13:33,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:13:33,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:33,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:33,249 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:33,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:13:33,411 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 13:13:33,411 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:13:33,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:13:33,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:33,514 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:13:33,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:33,594 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:13:33,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053935327] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:33,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:33,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 3, 3] total 20 [2024-11-13 13:13:33,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235455364] [2024-11-13 13:13:33,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:33,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 13:13:33,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:33,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 13:13:33,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-13 13:13:33,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-13 13:13:33,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 110 transitions, 717 flow. Second operand has 21 states, 21 states have (on average 24.238095238095237) internal successors, (509), 21 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:33,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:33,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-13 13:13:33,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:35,763 INFO L124 PetriNetUnfolderBase]: 7926/14879 cut-off events. [2024-11-13 13:13:35,763 INFO L125 PetriNetUnfolderBase]: For 17850/18632 co-relation queries the response was YES. [2024-11-13 13:13:35,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38310 conditions, 14879 events. 7926/14879 cut-off events. For 17850/18632 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 113970 event pairs, 6420 based on Foata normal form. 112/14442 useless extension candidates. Maximal degree in co-relation 38251. Up to 11175 conditions per place. [2024-11-13 13:13:35,858 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 44 selfloop transitions, 44 changer transitions 0/115 dead transitions. [2024-11-13 13:13:35,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 115 transitions, 932 flow [2024-11-13 13:13:35,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 13:13:35,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-13 13:13:35,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 494 transitions. [2024-11-13 13:13:35,861 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4406779661016949 [2024-11-13 13:13:35,861 INFO L175 Difference]: Start difference. First operand has 133 places, 110 transitions, 717 flow. Second operand 19 states and 494 transitions. [2024-11-13 13:13:35,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 115 transitions, 932 flow [2024-11-13 13:13:35,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 115 transitions, 839 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-11-13 13:13:35,907 INFO L231 Difference]: Finished difference. Result has 138 places, 115 transitions, 751 flow [2024-11-13 13:13:35,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=751, PETRI_PLACES=138, PETRI_TRANSITIONS=115} [2024-11-13 13:13:35,908 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 80 predicate places. [2024-11-13 13:13:35,908 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 115 transitions, 751 flow [2024-11-13 13:13:35,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.238095238095237) internal successors, (509), 21 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:35,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:35,909 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:35,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:13:36,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:36,109 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:36,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:36,110 INFO L85 PathProgramCache]: Analyzing trace with hash -780852561, now seen corresponding path program 1 times [2024-11-13 13:13:36,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:36,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615731623] [2024-11-13 13:13:36,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:36,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:36,219 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 13:13:36,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:36,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615731623] [2024-11-13 13:13:36,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615731623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:36,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860779190] [2024-11-13 13:13:36,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:36,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:36,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:36,223 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:36,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:13:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:36,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:13:36,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 13:13:36,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 13:13:36,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860779190] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:36,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:36,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-13 13:13:36,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123132220] [2024-11-13 13:13:36,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:36,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 13:13:36,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:36,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 13:13:36,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:13:36,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-13 13:13:36,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 115 transitions, 751 flow. Second operand has 12 states, 12 states have (on average 27.166666666666668) internal successors, (326), 12 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:36,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:36,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-13 13:13:36,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:39,626 INFO L124 PetriNetUnfolderBase]: 13159/23022 cut-off events. [2024-11-13 13:13:39,626 INFO L125 PetriNetUnfolderBase]: For 26748/28127 co-relation queries the response was YES. [2024-11-13 13:13:39,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60579 conditions, 23022 events. 13159/23022 cut-off events. For 26748/28127 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 172138 event pairs, 3554 based on Foata normal form. 1002/23612 useless extension candidates. Maximal degree in co-relation 60524. Up to 7704 conditions per place. [2024-11-13 13:13:39,776 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 308 selfloop transitions, 18 changer transitions 0/352 dead transitions. [2024-11-13 13:13:39,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 352 transitions, 2861 flow [2024-11-13 13:13:39,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:13:39,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 13:13:39,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 420 transitions. [2024-11-13 13:13:39,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.711864406779661 [2024-11-13 13:13:39,778 INFO L175 Difference]: Start difference. First operand has 138 places, 115 transitions, 751 flow. Second operand 10 states and 420 transitions. [2024-11-13 13:13:39,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 352 transitions, 2861 flow [2024-11-13 13:13:39,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 352 transitions, 2766 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-11-13 13:13:39,857 INFO L231 Difference]: Finished difference. Result has 139 places, 124 transitions, 752 flow [2024-11-13 13:13:39,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=752, PETRI_PLACES=139, PETRI_TRANSITIONS=124} [2024-11-13 13:13:39,858 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 81 predicate places. [2024-11-13 13:13:39,858 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 124 transitions, 752 flow [2024-11-13 13:13:39,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.166666666666668) internal successors, (326), 12 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:39,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:39,858 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:39,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 13:13:40,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 13:13:40,062 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:40,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:40,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1580613829, now seen corresponding path program 1 times [2024-11-13 13:13:40,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:40,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164556068] [2024-11-13 13:13:40,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:40,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:40,152 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:13:40,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:40,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164556068] [2024-11-13 13:13:40,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164556068] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:40,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167376647] [2024-11-13 13:13:40,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:40,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:40,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:40,156 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:40,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:13:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:40,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 13:13:40,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:40,431 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:13:40,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:13:40,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167376647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:40,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:40,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-13 13:13:40,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172780326] [2024-11-13 13:13:40,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:40,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 13:13:40,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:40,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 13:13:40,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-13 13:13:40,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-11-13 13:13:40,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 124 transitions, 752 flow. Second operand has 19 states, 19 states have (on average 21.789473684210527) internal successors, (414), 19 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:40,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:40,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-11-13 13:13:40,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:44,243 INFO L124 PetriNetUnfolderBase]: 16396/26518 cut-off events. [2024-11-13 13:13:44,244 INFO L125 PetriNetUnfolderBase]: For 47254/47662 co-relation queries the response was YES. [2024-11-13 13:13:44,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78606 conditions, 26518 events. 16396/26518 cut-off events. For 47254/47662 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 181446 event pairs, 2903 based on Foata normal form. 481/26405 useless extension candidates. Maximal degree in co-relation 78553. Up to 9964 conditions per place. [2024-11-13 13:13:44,433 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 174 selfloop transitions, 43 changer transitions 66/305 dead transitions. [2024-11-13 13:13:44,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 305 transitions, 2340 flow [2024-11-13 13:13:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 13:13:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-13 13:13:44,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 483 transitions. [2024-11-13 13:13:44,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.481555333998006 [2024-11-13 13:13:44,436 INFO L175 Difference]: Start difference. First operand has 139 places, 124 transitions, 752 flow. Second operand 17 states and 483 transitions. [2024-11-13 13:13:44,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 305 transitions, 2340 flow [2024-11-13 13:13:44,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 305 transitions, 2254 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-11-13 13:13:44,597 INFO L231 Difference]: Finished difference. Result has 153 places, 112 transitions, 750 flow [2024-11-13 13:13:44,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=750, PETRI_PLACES=153, PETRI_TRANSITIONS=112} [2024-11-13 13:13:44,598 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 95 predicate places. [2024-11-13 13:13:44,598 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 112 transitions, 750 flow [2024-11-13 13:13:44,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.789473684210527) internal successors, (414), 19 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:44,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:44,599 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:44,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 13:13:44,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 13:13:44,800 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:44,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:44,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1383289987, now seen corresponding path program 1 times [2024-11-13 13:13:44,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:44,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060043276] [2024-11-13 13:13:44,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:44,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 13:13:44,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:44,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060043276] [2024-11-13 13:13:44,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060043276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:44,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875338942] [2024-11-13 13:13:44,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:44,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:44,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:44,936 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:44,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:13:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:45,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:13:45,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:45,100 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 13:13:45,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 13:13:45,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875338942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:45,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:45,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-13 13:13:45,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702065366] [2024-11-13 13:13:45,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:45,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 13:13:45,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:45,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 13:13:45,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:13:45,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-13 13:13:45,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 112 transitions, 750 flow. Second operand has 12 states, 12 states have (on average 26.75) internal successors, (321), 12 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:45,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:45,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-13 13:13:45,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:50,148 INFO L124 PetriNetUnfolderBase]: 22639/39177 cut-off events. [2024-11-13 13:13:50,149 INFO L125 PetriNetUnfolderBase]: For 65090/65872 co-relation queries the response was YES. [2024-11-13 13:13:50,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114864 conditions, 39177 events. 22639/39177 cut-off events. For 65090/65872 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 304862 event pairs, 4945 based on Foata normal form. 1134/39782 useless extension candidates. Maximal degree in co-relation 114805. Up to 11404 conditions per place. [2024-11-13 13:13:50,471 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 295 selfloop transitions, 19 changer transitions 0/337 dead transitions. [2024-11-13 13:13:50,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 337 transitions, 2528 flow [2024-11-13 13:13:50,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:13:50,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 13:13:50,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 401 transitions. [2024-11-13 13:13:50,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6796610169491526 [2024-11-13 13:13:50,473 INFO L175 Difference]: Start difference. First operand has 153 places, 112 transitions, 750 flow. Second operand 10 states and 401 transitions. [2024-11-13 13:13:50,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 337 transitions, 2528 flow [2024-11-13 13:13:50,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 337 transitions, 2356 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-11-13 13:13:50,623 INFO L231 Difference]: Finished difference. Result has 141 places, 121 transitions, 728 flow [2024-11-13 13:13:50,623 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=728, PETRI_PLACES=141, PETRI_TRANSITIONS=121} [2024-11-13 13:13:50,623 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 83 predicate places. [2024-11-13 13:13:50,623 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 121 transitions, 728 flow [2024-11-13 13:13:50,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.75) internal successors, (321), 12 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:50,624 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:50,624 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:50,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 13:13:50,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 13:13:50,824 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:50,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:50,825 INFO L85 PathProgramCache]: Analyzing trace with hash -309159156, now seen corresponding path program 1 times [2024-11-13 13:13:50,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:50,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788765952] [2024-11-13 13:13:50,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:50,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:50,910 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 13:13:50,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:50,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788765952] [2024-11-13 13:13:50,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788765952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:50,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:50,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:13:50,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638733675] [2024-11-13 13:13:50,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:50,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:13:50,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:50,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:13:50,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:13:50,926 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-13 13:13:50,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 121 transitions, 728 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:50,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:50,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-13 13:13:50,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:54,883 INFO L124 PetriNetUnfolderBase]: 20017/34618 cut-off events. [2024-11-13 13:13:54,883 INFO L125 PetriNetUnfolderBase]: For 64048/64843 co-relation queries the response was YES. [2024-11-13 13:13:55,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100345 conditions, 34618 events. 20017/34618 cut-off events. For 64048/64843 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 264612 event pairs, 8823 based on Foata normal form. 868/34649 useless extension candidates. Maximal degree in co-relation 100293. Up to 14688 conditions per place. [2024-11-13 13:13:55,097 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 149 selfloop transitions, 7 changer transitions 0/183 dead transitions. [2024-11-13 13:13:55,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 183 transitions, 1371 flow [2024-11-13 13:13:55,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:13:55,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:13:55,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-11-13 13:13:55,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.690677966101695 [2024-11-13 13:13:55,098 INFO L175 Difference]: Start difference. First operand has 141 places, 121 transitions, 728 flow. Second operand 4 states and 163 transitions. [2024-11-13 13:13:55,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 183 transitions, 1371 flow [2024-11-13 13:13:55,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 183 transitions, 1342 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-13 13:13:55,223 INFO L231 Difference]: Finished difference. Result has 144 places, 122 transitions, 741 flow [2024-11-13 13:13:55,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=741, PETRI_PLACES=144, PETRI_TRANSITIONS=122} [2024-11-13 13:13:55,223 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 86 predicate places. [2024-11-13 13:13:55,224 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 122 transitions, 741 flow [2024-11-13 13:13:55,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:55,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:55,224 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:55,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 13:13:55,224 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:13:55,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:55,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1111679936, now seen corresponding path program 2 times [2024-11-13 13:13:55,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:55,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455673432] [2024-11-13 13:13:55,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:55,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:55,411 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-13 13:13:55,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:55,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455673432] [2024-11-13 13:13:55,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455673432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:55,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742183253] [2024-11-13 13:13:55,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:13:55,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:55,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:55,414 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:55,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:13:55,509 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 13:13:55,509 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:13:55,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:13:55,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:55,631 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-13 13:13:55,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:55,711 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-13 13:13:55,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742183253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:55,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:55,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2024-11-13 13:13:55,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206900132] [2024-11-13 13:13:55,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:55,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 13:13:55,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:55,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 13:13:55,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:13:55,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2024-11-13 13:13:55,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 122 transitions, 741 flow. Second operand has 13 states, 13 states have (on average 22.76923076923077) internal successors, (296), 13 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:55,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:55,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2024-11-13 13:13:55,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:05,060 INFO L124 PetriNetUnfolderBase]: 44611/72506 cut-off events. [2024-11-13 13:14:05,060 INFO L125 PetriNetUnfolderBase]: For 140119/142012 co-relation queries the response was YES. [2024-11-13 13:14:05,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210336 conditions, 72506 events. 44611/72506 cut-off events. For 140119/142012 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 577032 event pairs, 9854 based on Foata normal form. 856/72300 useless extension candidates. Maximal degree in co-relation 210281. Up to 13897 conditions per place. [2024-11-13 13:14:05,522 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 338 selfloop transitions, 52 changer transitions 9/426 dead transitions. [2024-11-13 13:14:05,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 426 transitions, 3678 flow [2024-11-13 13:14:05,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 13:14:05,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-13 13:14:05,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 610 transitions. [2024-11-13 13:14:05,524 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4923325262308313 [2024-11-13 13:14:05,524 INFO L175 Difference]: Start difference. First operand has 144 places, 122 transitions, 741 flow. Second operand 21 states and 610 transitions. [2024-11-13 13:14:05,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 426 transitions, 3678 flow [2024-11-13 13:14:06,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 426 transitions, 3604 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-13 13:14:06,126 INFO L231 Difference]: Finished difference. Result has 160 places, 138 transitions, 932 flow [2024-11-13 13:14:06,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=932, PETRI_PLACES=160, PETRI_TRANSITIONS=138} [2024-11-13 13:14:06,127 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 102 predicate places. [2024-11-13 13:14:06,127 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 138 transitions, 932 flow [2024-11-13 13:14:06,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.76923076923077) internal successors, (296), 13 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:06,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:06,127 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:06,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 13:14:06,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:06,328 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:14:06,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:06,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1391711660, now seen corresponding path program 1 times [2024-11-13 13:14:06,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:06,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77388807] [2024-11-13 13:14:06,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:06,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 13:14:06,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:06,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77388807] [2024-11-13 13:14:06,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77388807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:06,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829382363] [2024-11-13 13:14:06,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:06,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:06,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:06,424 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:06,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8982cd0-91f9-4820-96e1-624420d2e447/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 13:14:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:06,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:14:06,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:06,720 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 13:14:06,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 13:14:06,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829382363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:06,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:14:06,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-13 13:14:06,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190505344] [2024-11-13 13:14:06,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:06,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 13:14:06,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:06,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 13:14:06,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-11-13 13:14:07,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-11-13 13:14:07,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 138 transitions, 932 flow. Second operand has 19 states, 19 states have (on average 22.210526315789473) internal successors, (422), 19 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:07,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:07,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-11-13 13:14:07,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand