./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-theta/unwind2-nondet.i --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_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/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_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-theta/unwind2-nondet.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/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_b14cfe62-f062-4168-906a-171879285d06/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 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:07:47,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:07:47,592 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 14:07:47,598 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:07:47,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:07:47,627 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:07:47,628 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:07:47,628 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:07:47,630 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:07:47,630 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:07:47,631 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:07:47,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:07:47,631 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:07:47,631 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:07:47,631 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:07:47,632 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:07:47,632 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:07:47,632 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:07:47,632 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:07:47,632 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:07:47,632 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:07:47,632 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:07:47,632 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:07:47,633 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:07:47,633 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:07:47,633 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 14:07:47,633 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:07:47,633 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:07:47,635 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:07:47,635 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:07:47,636 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:07:47,636 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:07:47,636 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:07:47,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:07:47,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:07:47,637 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:07:47,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:07:47,638 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:07:47,638 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:07:47,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:07:47,638 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:07:47,638 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:07:47,638 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:07:47,639 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:07:47,639 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_b14cfe62-f062-4168-906a-171879285d06/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 -> 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d [2024-11-13 14:07:48,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:07:48,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:07:48,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:07:48,058 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:07:48,058 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:07:48,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-theta/unwind2-nondet.i Unable to find full path for "g++" [2024-11-13 14:07:50,254 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:07:50,688 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:07:50,689 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2024-11-13 14:07:50,708 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/data/0521fbdfd/2f006cc3cb304ba392e8981e96da49ee/FLAG15ecb8732 [2024-11-13 14:07:50,728 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/data/0521fbdfd/2f006cc3cb304ba392e8981e96da49ee [2024-11-13 14:07:50,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:07:50,736 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:07:50,737 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:07:50,738 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:07:50,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:07:50,745 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:07:50" (1/1) ... [2024-11-13 14:07:50,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@677390ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:50, skipping insertion in model container [2024-11-13 14:07:50,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:07:50" (1/1) ... [2024-11-13 14:07:50,812 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:07:51,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:07:51,240 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:07:51,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:07:51,345 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:07:51,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:51 WrapperNode [2024-11-13 14:07:51,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:07:51,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:07:51,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:07:51,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:07:51,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:51" (1/1) ... [2024-11-13 14:07:51,376 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:51" (1/1) ... [2024-11-13 14:07:51,402 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 92 [2024-11-13 14:07:51,403 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:07:51,403 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:07:51,404 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:07:51,404 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:07:51,414 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:51" (1/1) ... [2024-11-13 14:07:51,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:51" (1/1) ... [2024-11-13 14:07:51,417 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:51" (1/1) ... [2024-11-13 14:07:51,432 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 14:07:51,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:51" (1/1) ... [2024-11-13 14:07:51,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:51" (1/1) ... [2024-11-13 14:07:51,438 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:51" (1/1) ... [2024-11-13 14:07:51,442 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:51" (1/1) ... [2024-11-13 14:07:51,444 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:51" (1/1) ... [2024-11-13 14:07:51,449 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:51" (1/1) ... [2024-11-13 14:07:51,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:07:51,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:07:51,456 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:07:51,456 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:07:51,458 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:51" (1/1) ... [2024-11-13 14:07:51,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:07:51,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:51,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:07:51,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:07:51,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:07:51,556 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-13 14:07:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-13 14:07:51,557 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-13 14:07:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-13 14:07:51,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:07:51,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:07:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:07:51,559 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 14:07:51,760 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:07:51,763 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:07:52,059 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:07:52,059 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:07:52,289 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:07:52,290 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 14:07:52,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:07:52 BoogieIcfgContainer [2024-11-13 14:07:52,291 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:07:52,297 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:07:52,297 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:07:52,305 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:07:52,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:07:50" (1/3) ... [2024-11-13 14:07:52,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3cac32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:07:52, skipping insertion in model container [2024-11-13 14:07:52,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:07:51" (2/3) ... [2024-11-13 14:07:52,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3cac32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:07:52, skipping insertion in model container [2024-11-13 14:07:52,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:07:52" (3/3) ... [2024-11-13 14:07:52,313 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-nondet.i [2024-11-13 14:07:52,334 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:07:52,339 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-nondet.i that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 6 error locations. [2024-11-13 14:07:52,339 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:07:52,438 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 14:07:52,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2024-11-13 14:07:52,548 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-11-13 14:07:52,551 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 14:07:52,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-13 14:07:52,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2024-11-13 14:07:52,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2024-11-13 14:07:52,573 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:07:52,588 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;@31ed38a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:07:52,588 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-13 14:07:52,601 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:07:52,601 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-13 14:07:52,601 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 14:07:52,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:07:52,602 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:07:52,603 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:07:52,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:52,614 INFO L85 PathProgramCache]: Analyzing trace with hash -102104839, now seen corresponding path program 1 times [2024-11-13 14:07:52,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:52,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319127012] [2024-11-13 14:07:52,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:52,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:52,998 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 14:07:52,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:52,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319127012] [2024-11-13 14:07:52,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319127012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:53,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:53,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:07:53,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567368279] [2024-11-13 14:07:53,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:53,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:07:53,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:53,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:07:53,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:07:53,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-13 14:07:53,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 14:07:53,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:07:53,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-13 14:07:53,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:07:53,285 INFO L124 PetriNetUnfolderBase]: 123/288 cut-off events. [2024-11-13 14:07:53,288 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-13 14:07:53,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 288 events. 123/288 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1334 event pairs, 96 based on Foata normal form. 11/229 useless extension candidates. Maximal degree in co-relation 474. Up to 211 conditions per place. [2024-11-13 14:07:53,299 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 17 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2024-11-13 14:07:53,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 99 flow [2024-11-13 14:07:53,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:07:53,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:07:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-13 14:07:53,320 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-13 14:07:53,323 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 52 transitions. [2024-11-13 14:07:53,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 99 flow [2024-11-13 14:07:53,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 94 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 14:07:53,336 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 60 flow [2024-11-13 14:07:53,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2024-11-13 14:07:53,346 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2024-11-13 14:07:53,347 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 60 flow [2024-11-13 14:07:53,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 14:07:53,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:07:53,348 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:53,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:07:53,350 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:07:53,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:53,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1129717592, now seen corresponding path program 1 times [2024-11-13 14:07:53,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:53,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966397989] [2024-11-13 14:07:53,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:53,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:53,506 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 14:07:53,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:53,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966397989] [2024-11-13 14:07:53,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966397989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:53,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:53,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:07:53,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852710415] [2024-11-13 14:07:53,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:53,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:07:53,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:53,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:07:53,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:07:53,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-13 14:07:53,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 14:07:53,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:07:53,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-13 14:07:53,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:07:53,657 INFO L124 PetriNetUnfolderBase]: 107/255 cut-off events. [2024-11-13 14:07:53,658 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 14:07:53,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 255 events. 107/255 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1116 event pairs, 82 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 448. Up to 184 conditions per place. [2024-11-13 14:07:53,661 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 16 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2024-11-13 14:07:53,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 92 flow [2024-11-13 14:07:53,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:07:53,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:07:53,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-11-13 14:07:53,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-13 14:07:53,669 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 60 flow. Second operand 3 states and 51 transitions. [2024-11-13 14:07:53,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 92 flow [2024-11-13 14:07:53,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 91 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:07:53,670 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 59 flow [2024-11-13 14:07:53,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-11-13 14:07:53,676 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2024-11-13 14:07:53,676 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 59 flow [2024-11-13 14:07:53,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 14:07:53,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:07:53,676 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:53,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:07:53,677 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:07:53,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:53,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1129919147, now seen corresponding path program 1 times [2024-11-13 14:07:53,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:53,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459885640] [2024-11-13 14:07:53,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:53,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:53,833 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 14:07:53,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:53,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459885640] [2024-11-13 14:07:53,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459885640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:53,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:53,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:07:53,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696635251] [2024-11-13 14:07:53,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:53,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:07:53,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:53,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:07:53,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:07:53,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-13 14:07:53,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:53,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:07:53,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-13 14:07:53,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:07:54,197 INFO L124 PetriNetUnfolderBase]: 213/434 cut-off events. [2024-11-13 14:07:54,197 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 14:07:54,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 434 events. 213/434 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1932 event pairs, 118 based on Foata normal form. 14/363 useless extension candidates. Maximal degree in co-relation 819. Up to 253 conditions per place. [2024-11-13 14:07:54,206 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 38 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-13 14:07:54,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 48 transitions, 190 flow [2024-11-13 14:07:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:07:54,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:07:54,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-11-13 14:07:54,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6796875 [2024-11-13 14:07:54,209 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 59 flow. Second operand 4 states and 87 transitions. [2024-11-13 14:07:54,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 48 transitions, 190 flow [2024-11-13 14:07:54,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 48 transitions, 189 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:07:54,213 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 80 flow [2024-11-13 14:07:54,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-11-13 14:07:54,214 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-11-13 14:07:54,214 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 80 flow [2024-11-13 14:07:54,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:07:54,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:07:54,215 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:54,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:07:54,218 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:07:54,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:54,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1762907268, now seen corresponding path program 1 times [2024-11-13 14:07:54,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:54,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711265648] [2024-11-13 14:07:54,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:54,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:54,424 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 14:07:54,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:54,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711265648] [2024-11-13 14:07:54,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711265648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:07:54,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430444689] [2024-11-13 14:07:54,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:54,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:54,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:54,428 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:07:54,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:07:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:54,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:07:54,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:54,628 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 14:07:54,628 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:07:54,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430444689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:54,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:07:54,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-13 14:07:54,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141573526] [2024-11-13 14:07:54,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:54,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:07:54,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:54,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:07:54,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:07:54,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-13 14:07:54,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 80 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 14:07:54,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:07:54,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-13 14:07:54,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:07:55,012 INFO L124 PetriNetUnfolderBase]: 193/378 cut-off events. [2024-11-13 14:07:55,012 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-11-13 14:07:55,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 378 events. 193/378 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1582 event pairs, 23 based on Foata normal form. 14/349 useless extension candidates. Maximal degree in co-relation 839. Up to 94 conditions per place. [2024-11-13 14:07:55,031 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 53 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2024-11-13 14:07:55,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 65 transitions, 277 flow [2024-11-13 14:07:55,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:07:55,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 14:07:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-11-13 14:07:55,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6510416666666666 [2024-11-13 14:07:55,034 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 80 flow. Second operand 6 states and 125 transitions. [2024-11-13 14:07:55,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 65 transitions, 277 flow [2024-11-13 14:07:55,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 65 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:07:55,041 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 84 flow [2024-11-13 14:07:55,041 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-11-13 14:07:55,042 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2024-11-13 14:07:55,042 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 84 flow [2024-11-13 14:07:55,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 14:07:55,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:07:55,043 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:55,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:07:55,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:55,248 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:07:55,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:55,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1654027228, now seen corresponding path program 1 times [2024-11-13 14:07:55,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:55,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375426773] [2024-11-13 14:07:55,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:55,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:55,325 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 14:07:55,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:55,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375426773] [2024-11-13 14:07:55,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375426773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:55,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:07:55,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:07:55,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332128841] [2024-11-13 14:07:55,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:55,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:07:55,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:55,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:07:55,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:07:55,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-13 14:07:55,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 14:07:55,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:07:55,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-13 14:07:55,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:07:55,558 INFO L124 PetriNetUnfolderBase]: 303/592 cut-off events. [2024-11-13 14:07:55,558 INFO L125 PetriNetUnfolderBase]: For 414/424 co-relation queries the response was YES. [2024-11-13 14:07:55,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 592 events. 303/592 cut-off events. For 414/424 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2625 event pairs, 189 based on Foata normal form. 18/547 useless extension candidates. Maximal degree in co-relation 1399. Up to 387 conditions per place. [2024-11-13 14:07:55,564 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 39 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-13 14:07:55,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 256 flow [2024-11-13 14:07:55,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:07:55,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:07:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-11-13 14:07:55,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.640625 [2024-11-13 14:07:55,567 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 84 flow. Second operand 4 states and 82 transitions. [2024-11-13 14:07:55,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 256 flow [2024-11-13 14:07:55,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 48 transitions, 229 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-13 14:07:55,574 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 97 flow [2024-11-13 14:07:55,574 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2024-11-13 14:07:55,575 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2024-11-13 14:07:55,575 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 97 flow [2024-11-13 14:07:55,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 14:07:55,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:07:55,575 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:55,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:07:55,576 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:07:55,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:55,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1184449240, now seen corresponding path program 1 times [2024-11-13 14:07:55,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:55,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284489278] [2024-11-13 14:07:55,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:55,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:55,692 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 14:07:55,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:55,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284489278] [2024-11-13 14:07:55,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284489278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:07:55,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760829743] [2024-11-13 14:07:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:55,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:55,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:55,695 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:07:55,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:07:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:55,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:07:55,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:55,835 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 14:07:55,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:07:55,905 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 14:07:55,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760829743] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:07:55,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:07:55,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-13 14:07:55,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239659131] [2024-11-13 14:07:55,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:07:55,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:07:55,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:55,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:07:55,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:07:55,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-13 14:07:55,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 97 flow. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 14:07:55,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:07:55,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-13 14:07:55,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:07:56,524 INFO L124 PetriNetUnfolderBase]: 568/1106 cut-off events. [2024-11-13 14:07:56,525 INFO L125 PetriNetUnfolderBase]: For 712/776 co-relation queries the response was YES. [2024-11-13 14:07:56,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2764 conditions, 1106 events. 568/1106 cut-off events. For 712/776 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5527 event pairs, 151 based on Foata normal form. 60/1159 useless extension candidates. Maximal degree in co-relation 2754. Up to 315 conditions per place. [2024-11-13 14:07:56,533 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 115 selfloop transitions, 9 changer transitions 0/131 dead transitions. [2024-11-13 14:07:56,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 131 transitions, 699 flow [2024-11-13 14:07:56,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:07:56,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 14:07:56,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 219 transitions. [2024-11-13 14:07:56,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.684375 [2024-11-13 14:07:56,537 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 97 flow. Second operand 10 states and 219 transitions. [2024-11-13 14:07:56,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 131 transitions, 699 flow [2024-11-13 14:07:56,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 131 transitions, 681 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:07:56,548 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 159 flow [2024-11-13 14:07:56,548 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=159, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2024-11-13 14:07:56,550 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2024-11-13 14:07:56,550 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 159 flow [2024-11-13 14:07:56,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 14:07:56,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:07:56,552 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:56,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:07:56,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:56,752 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:07:56,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:56,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1034327008, now seen corresponding path program 1 times [2024-11-13 14:07:56,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:56,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116023514] [2024-11-13 14:07:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:56,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:56,906 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 14:07:56,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:56,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116023514] [2024-11-13 14:07:56,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116023514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:07:56,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355195934] [2024-11-13 14:07:56,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:56,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:56,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:56,909 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:07:56,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:07:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:57,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:07:57,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:57,045 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 14:07:57,045 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:07:57,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355195934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:07:57,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:07:57,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-13 14:07:57,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077467535] [2024-11-13 14:07:57,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:07:57,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:07:57,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:57,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:07:57,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:07:57,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-13 14:07:57,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 14:07:57,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:07:57,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-13 14:07:57,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:07:57,429 INFO L124 PetriNetUnfolderBase]: 595/1154 cut-off events. [2024-11-13 14:07:57,430 INFO L125 PetriNetUnfolderBase]: For 1244/1258 co-relation queries the response was YES. [2024-11-13 14:07:57,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3185 conditions, 1154 events. 595/1154 cut-off events. For 1244/1258 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5735 event pairs, 156 based on Foata normal form. 39/1145 useless extension candidates. Maximal degree in co-relation 3172. Up to 317 conditions per place. [2024-11-13 14:07:57,439 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 84 selfloop transitions, 5 changer transitions 0/95 dead transitions. [2024-11-13 14:07:57,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 95 transitions, 695 flow [2024-11-13 14:07:57,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:07:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 14:07:57,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-11-13 14:07:57,441 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-13 14:07:57,441 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 159 flow. Second operand 6 states and 116 transitions. [2024-11-13 14:07:57,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 95 transitions, 695 flow [2024-11-13 14:07:57,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 95 transitions, 645 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-13 14:07:57,450 INFO L231 Difference]: Finished difference. Result has 52 places, 34 transitions, 155 flow [2024-11-13 14:07:57,450 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=155, PETRI_PLACES=52, PETRI_TRANSITIONS=34} [2024-11-13 14:07:57,451 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2024-11-13 14:07:57,451 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 34 transitions, 155 flow [2024-11-13 14:07:57,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 14:07:57,451 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:07:57,451 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:57,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:07:57,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 14:07:57,652 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:07:57,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:57,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1999365863, now seen corresponding path program 1 times [2024-11-13 14:07:57,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:57,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074195543] [2024-11-13 14:07:57,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:57,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:57,785 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 14:07:57,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:57,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074195543] [2024-11-13 14:07:57,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074195543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:07:57,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471279772] [2024-11-13 14:07:57,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:57,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:57,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:57,792 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:07:57,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:07:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:57,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:07:57,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:57,922 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 14:07:57,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:07:57,983 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 14:07:57,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471279772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:07:57,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:07:57,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-13 14:07:57,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992053917] [2024-11-13 14:07:57,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:07:57,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:07:57,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:57,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:07:57,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:07:58,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-13 14:07:58,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 34 transitions, 155 flow. Second operand has 12 states, 12 states have (on average 12.583333333333334) internal successors, (151), 12 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 14:07:58,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:07:58,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-13 14:07:58,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:07:58,654 INFO L124 PetriNetUnfolderBase]: 1099/2138 cut-off events. [2024-11-13 14:07:58,654 INFO L125 PetriNetUnfolderBase]: For 2551/2577 co-relation queries the response was YES. [2024-11-13 14:07:58,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6036 conditions, 2138 events. 1099/2138 cut-off events. For 2551/2577 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 11667 event pairs, 372 based on Foata normal form. 117/2246 useless extension candidates. Maximal degree in co-relation 6022. Up to 736 conditions per place. [2024-11-13 14:07:58,673 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 149 selfloop transitions, 9 changer transitions 0/164 dead transitions. [2024-11-13 14:07:58,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 164 transitions, 1155 flow [2024-11-13 14:07:58,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:07:58,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 14:07:58,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-11-13 14:07:58,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.621875 [2024-11-13 14:07:58,678 INFO L175 Difference]: Start difference. First operand has 52 places, 34 transitions, 155 flow. Second operand 10 states and 199 transitions. [2024-11-13 14:07:58,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 164 transitions, 1155 flow [2024-11-13 14:07:58,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 164 transitions, 1140 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-13 14:07:58,690 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 210 flow [2024-11-13 14:07:58,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=210, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2024-11-13 14:07:58,691 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2024-11-13 14:07:58,694 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 210 flow [2024-11-13 14:07:58,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.583333333333334) internal successors, (151), 12 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 14:07:58,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:07:58,694 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-13 14:07:58,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:07:58,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:58,898 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:07:58,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:58,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1434912479, now seen corresponding path program 2 times [2024-11-13 14:07:58,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:58,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952753898] [2024-11-13 14:07:58,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:58,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:07:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:07:59,145 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 14:07:59,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:07:59,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952753898] [2024-11-13 14:07:59,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952753898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:07:59,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677344101] [2024-11-13 14:07:59,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:07:59,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:59,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:07:59,150 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:07:59,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:07:59,235 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:07:59,235 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:07:59,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:07:59,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:59,407 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 14:07:59,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:07:59,624 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 14:07:59,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677344101] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:07:59,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:07:59,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 21 [2024-11-13 14:07:59,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918995440] [2024-11-13 14:07:59,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:07:59,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 14:07:59,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:59,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 14:07:59,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-13 14:07:59,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-13 14:07:59,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 210 flow. Second operand has 22 states, 22 states have (on average 8.5) internal successors, (187), 22 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 14:07:59,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:07:59,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-13 14:07:59,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:08:02,491 INFO L124 PetriNetUnfolderBase]: 3178/6016 cut-off events. [2024-11-13 14:08:02,491 INFO L125 PetriNetUnfolderBase]: For 10833/10886 co-relation queries the response was YES. [2024-11-13 14:08:02,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18310 conditions, 6016 events. 3178/6016 cut-off events. For 10833/10886 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 40158 event pairs, 112 based on Foata normal form. 176/6191 useless extension candidates. Maximal degree in co-relation 18294. Up to 911 conditions per place. [2024-11-13 14:08:02,542 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 541 selfloop transitions, 60 changer transitions 26/631 dead transitions. [2024-11-13 14:08:02,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 631 transitions, 4933 flow [2024-11-13 14:08:02,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-13 14:08:02,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-13 14:08:02,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 616 transitions. [2024-11-13 14:08:02,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48125 [2024-11-13 14:08:02,550 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 210 flow. Second operand 40 states and 616 transitions. [2024-11-13 14:08:02,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 631 transitions, 4933 flow [2024-11-13 14:08:02,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 631 transitions, 4563 flow, removed 111 selfloop flow, removed 2 redundant places. [2024-11-13 14:08:02,625 INFO L231 Difference]: Finished difference. Result has 108 places, 88 transitions, 605 flow [2024-11-13 14:08:02,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=605, PETRI_PLACES=108, PETRI_TRANSITIONS=88} [2024-11-13 14:08:02,627 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 75 predicate places. [2024-11-13 14:08:02,627 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 88 transitions, 605 flow [2024-11-13 14:08:02,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.5) internal successors, (187), 22 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 14:08:02,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:08:02,628 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:02,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:08:02,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 14:08:02,828 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:08:02,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:02,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1903446563, now seen corresponding path program 2 times [2024-11-13 14:08:02,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:02,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708466587] [2024-11-13 14:08:02,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:02,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:03,153 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 14:08:03,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:03,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708466587] [2024-11-13 14:08:03,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708466587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:03,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95050648] [2024-11-13 14:08:03,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:08:03,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:03,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:03,156 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:03,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:08:03,247 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:08:03,247 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:08:03,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:08:03,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:03,422 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 14:08:03,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:08:03,552 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 14:08:03,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95050648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:08:03,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:08:03,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2024-11-13 14:08:03,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604533861] [2024-11-13 14:08:03,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:08:03,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 14:08:03,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:03,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 14:08:03,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-13 14:08:03,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-13 14:08:03,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 88 transitions, 605 flow. Second operand has 18 states, 18 states have (on average 9.0) internal successors, (162), 18 states have internal predecessors, (162), 0 states have call successors, (0), 0 states 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 14:08:03,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:08:03,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-13 14:08:03,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:08:06,865 INFO L124 PetriNetUnfolderBase]: 4753/8742 cut-off events. [2024-11-13 14:08:06,865 INFO L125 PetriNetUnfolderBase]: For 35445/35479 co-relation queries the response was YES. [2024-11-13 14:08:06,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32850 conditions, 8742 events. 4753/8742 cut-off events. For 35445/35479 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 60234 event pairs, 133 based on Foata normal form. 276/9016 useless extension candidates. Maximal degree in co-relation 32821. Up to 1298 conditions per place. [2024-11-13 14:08:06,964 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 381 selfloop transitions, 31 changer transitions 527/943 dead transitions. [2024-11-13 14:08:06,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 943 transitions, 9339 flow [2024-11-13 14:08:06,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-13 14:08:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-13 14:08:06,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 605 transitions. [2024-11-13 14:08:06,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47265625 [2024-11-13 14:08:06,973 INFO L175 Difference]: Start difference. First operand has 108 places, 88 transitions, 605 flow. Second operand 40 states and 605 transitions. [2024-11-13 14:08:06,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 943 transitions, 9339 flow [2024-11-13 14:08:07,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 943 transitions, 7890 flow, removed 287 selfloop flow, removed 10 redundant places. [2024-11-13 14:08:07,196 INFO L231 Difference]: Finished difference. Result has 148 places, 76 transitions, 577 flow [2024-11-13 14:08:07,196 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=577, PETRI_PLACES=148, PETRI_TRANSITIONS=76} [2024-11-13 14:08:07,198 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 115 predicate places. [2024-11-13 14:08:07,198 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 76 transitions, 577 flow [2024-11-13 14:08:07,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.0) internal successors, (162), 18 states have internal predecessors, (162), 0 states have call successors, (0), 0 states 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 14:08:07,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:08:07,199 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:07,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 14:08:07,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 14:08:07,403 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:08:07,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:07,403 INFO L85 PathProgramCache]: Analyzing trace with hash -318687539, now seen corresponding path program 1 times [2024-11-13 14:08:07,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:07,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443231062] [2024-11-13 14:08:07,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:07,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:07,693 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:07,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:07,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443231062] [2024-11-13 14:08:07,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443231062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:07,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459132498] [2024-11-13 14:08:07,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:07,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:07,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:07,695 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:07,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:08:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:07,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 14:08:07,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:07,881 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:07,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:08:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:08,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459132498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:08:08,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:08:08,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-13 14:08:08,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152499023] [2024-11-13 14:08:08,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:08:08,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 14:08:08,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:08,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 14:08:08,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-13 14:08:08,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-13 14:08:08,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 76 transitions, 577 flow. Second operand has 28 states, 28 states have (on average 12.285714285714286) internal successors, (344), 28 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:08:08,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:08:08,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-13 14:08:08,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:08:10,459 INFO L124 PetriNetUnfolderBase]: 3805/7537 cut-off events. [2024-11-13 14:08:10,459 INFO L125 PetriNetUnfolderBase]: For 49362/49441 co-relation queries the response was YES. [2024-11-13 14:08:10,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31789 conditions, 7537 events. 3805/7537 cut-off events. For 49362/49441 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 50570 event pairs, 395 based on Foata normal form. 266/7791 useless extension candidates. Maximal degree in co-relation 31749. Up to 1210 conditions per place. [2024-11-13 14:08:10,559 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 740 selfloop transitions, 50 changer transitions 96/896 dead transitions. [2024-11-13 14:08:10,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 896 transitions, 9205 flow [2024-11-13 14:08:10,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 14:08:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-13 14:08:10,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 575 transitions. [2024-11-13 14:08:10,563 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6911057692307693 [2024-11-13 14:08:10,563 INFO L175 Difference]: Start difference. First operand has 148 places, 76 transitions, 577 flow. Second operand 26 states and 575 transitions. [2024-11-13 14:08:10,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 896 transitions, 9205 flow [2024-11-13 14:08:10,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 896 transitions, 7744 flow, removed 280 selfloop flow, removed 14 redundant places. [2024-11-13 14:08:10,858 INFO L231 Difference]: Finished difference. Result has 142 places, 104 transitions, 854 flow [2024-11-13 14:08:10,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=854, PETRI_PLACES=142, PETRI_TRANSITIONS=104} [2024-11-13 14:08:10,860 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 109 predicate places. [2024-11-13 14:08:10,860 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 104 transitions, 854 flow [2024-11-13 14:08:10,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.285714285714286) internal successors, (344), 28 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:08:10,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:08:10,861 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:10,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:08:11,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 14:08:11,062 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:08:11,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:11,063 INFO L85 PathProgramCache]: Analyzing trace with hash 946348208, now seen corresponding path program 1 times [2024-11-13 14:08:11,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:11,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436480463] [2024-11-13 14:08:11,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:11,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:11,371 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:11,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:11,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436480463] [2024-11-13 14:08:11,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436480463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:11,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728516349] [2024-11-13 14:08:11,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:11,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:11,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:11,375 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:11,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:08:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:11,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 14:08:11,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:11,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:08:11,826 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:11,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728516349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:08:11,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:08:11,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-13 14:08:11,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353743042] [2024-11-13 14:08:11,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:08:11,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 14:08:11,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:11,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 14:08:11,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-13 14:08:11,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-13 14:08:11,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 104 transitions, 854 flow. Second operand has 28 states, 28 states have (on average 12.285714285714286) internal successors, (344), 28 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:08:11,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:08:11,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-13 14:08:11,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:08:15,213 INFO L124 PetriNetUnfolderBase]: 7528/15002 cut-off events. [2024-11-13 14:08:15,213 INFO L125 PetriNetUnfolderBase]: For 94148/94218 co-relation queries the response was YES. [2024-11-13 14:08:15,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63533 conditions, 15002 events. 7528/15002 cut-off events. For 94148/94218 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 111234 event pairs, 1090 based on Foata normal form. 651/15641 useless extension candidates. Maximal degree in co-relation 63491. Up to 2400 conditions per place. [2024-11-13 14:08:15,341 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 1452 selfloop transitions, 50 changer transitions 24/1536 dead transitions. [2024-11-13 14:08:15,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 1536 transitions, 17182 flow [2024-11-13 14:08:15,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 14:08:15,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-13 14:08:15,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 515 transitions. [2024-11-13 14:08:15,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6189903846153846 [2024-11-13 14:08:15,344 INFO L175 Difference]: Start difference. First operand has 142 places, 104 transitions, 854 flow. Second operand 26 states and 515 transitions. [2024-11-13 14:08:15,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 1536 transitions, 17182 flow [2024-11-13 14:08:16,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 1536 transitions, 15832 flow, removed 175 selfloop flow, removed 10 redundant places. [2024-11-13 14:08:16,012 INFO L231 Difference]: Finished difference. Result has 164 places, 132 transitions, 1146 flow [2024-11-13 14:08:16,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1146, PETRI_PLACES=164, PETRI_TRANSITIONS=132} [2024-11-13 14:08:16,013 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 131 predicate places. [2024-11-13 14:08:16,013 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 132 transitions, 1146 flow [2024-11-13 14:08:16,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.285714285714286) internal successors, (344), 28 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:08:16,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:08:16,014 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:16,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 14:08:16,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 14:08:16,215 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:08:16,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:16,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1645578748, now seen corresponding path program 2 times [2024-11-13 14:08:16,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:16,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986448342] [2024-11-13 14:08:16,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:16,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:17,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:17,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986448342] [2024-11-13 14:08:17,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986448342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:17,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602141369] [2024-11-13 14:08:17,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:08:17,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:17,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:17,051 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:17,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:08:17,139 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:08:17,139 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:08:17,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:08:17,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:17,405 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 14:08:17,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:08:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 14:08:17,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602141369] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:08:17,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:08:17,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 5, 5] total 33 [2024-11-13 14:08:17,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989964754] [2024-11-13 14:08:17,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:08:17,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 14:08:17,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:17,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 14:08:17,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 14:08:17,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-13 14:08:17,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 132 transitions, 1146 flow. Second operand has 34 states, 34 states have (on average 8.705882352941176) internal successors, (296), 34 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 14:08:17,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:08:17,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-13 14:08:17,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:08:24,847 INFO L124 PetriNetUnfolderBase]: 7943/15664 cut-off events. [2024-11-13 14:08:24,848 INFO L125 PetriNetUnfolderBase]: For 99568/99654 co-relation queries the response was YES. [2024-11-13 14:08:24,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69937 conditions, 15664 events. 7943/15664 cut-off events. For 99568/99654 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 115837 event pairs, 158 based on Foata normal form. 162/15824 useless extension candidates. Maximal degree in co-relation 69887. Up to 2536 conditions per place. [2024-11-13 14:08:24,982 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 1148 selfloop transitions, 43 changer transitions 1129/2324 dead transitions. [2024-11-13 14:08:24,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 2324 transitions, 24914 flow [2024-11-13 14:08:24,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-13 14:08:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2024-11-13 14:08:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 1447 transitions. [2024-11-13 14:08:24,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4037388392857143 [2024-11-13 14:08:24,989 INFO L175 Difference]: Start difference. First operand has 164 places, 132 transitions, 1146 flow. Second operand 112 states and 1447 transitions. [2024-11-13 14:08:24,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 2324 transitions, 24914 flow [2024-11-13 14:08:25,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 2324 transitions, 22862 flow, removed 282 selfloop flow, removed 24 redundant places. [2024-11-13 14:08:25,754 INFO L231 Difference]: Finished difference. Result has 254 places, 87 transitions, 823 flow [2024-11-13 14:08:25,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=112, PETRI_FLOW=823, PETRI_PLACES=254, PETRI_TRANSITIONS=87} [2024-11-13 14:08:25,755 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 221 predicate places. [2024-11-13 14:08:25,755 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 87 transitions, 823 flow [2024-11-13 14:08:25,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.705882352941176) internal successors, (296), 34 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 14:08:25,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:08:25,756 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:25,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 14:08:25,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 14:08:25,961 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:08:25,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:25,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1772834726, now seen corresponding path program 2 times [2024-11-13 14:08:25,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:08:25,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026105204] [2024-11-13 14:08:25,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:25,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:08:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:26,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:08:26,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026105204] [2024-11-13 14:08:26,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026105204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:08:26,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925701694] [2024-11-13 14:08:26,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:08:26,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:26,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:26,625 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:26,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:08:26,706 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:08:26,707 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:08:26,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:08:26,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 14:08:26,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:08:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 14:08:27,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925701694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:08:27,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:08:27,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 5, 5] total 37 [2024-11-13 14:08:27,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545838373] [2024-11-13 14:08:27,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:08:27,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 14:08:27,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:08:27,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 14:08:27,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1146, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 14:08:27,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-13 14:08:27,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 87 transitions, 823 flow. Second operand has 38 states, 38 states have (on average 8.68421052631579) internal successors, (330), 38 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:08:27,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:08:27,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-13 14:08:27,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:08:29,935 INFO L124 PetriNetUnfolderBase]: 4164/8514 cut-off events. [2024-11-13 14:08:29,935 INFO L125 PetriNetUnfolderBase]: For 68108/68108 co-relation queries the response was YES. [2024-11-13 14:08:29,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37182 conditions, 8514 events. 4164/8514 cut-off events. For 68108/68108 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 56750 event pairs, 2 based on Foata normal form. 200/8713 useless extension candidates. Maximal degree in co-relation 37147. Up to 1902 conditions per place. [2024-11-13 14:08:29,993 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 0 selfloop transitions, 0 changer transitions 1355/1355 dead transitions. [2024-11-13 14:08:29,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 1355 transitions, 17619 flow [2024-11-13 14:08:29,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 14:08:29,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-13 14:08:29,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 461 transitions. [2024-11-13 14:08:29,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42371323529411764 [2024-11-13 14:08:29,996 INFO L175 Difference]: Start difference. First operand has 254 places, 87 transitions, 823 flow. Second operand 34 states and 461 transitions. [2024-11-13 14:08:29,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 1355 transitions, 17619 flow [2024-11-13 14:08:30,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 1355 transitions, 9467 flow, removed 2569 selfloop flow, removed 59 redundant places. [2024-11-13 14:08:30,177 INFO L231 Difference]: Finished difference. Result has 135 places, 0 transitions, 0 flow [2024-11-13 14:08:30,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=0, PETRI_PLACES=135, PETRI_TRANSITIONS=0} [2024-11-13 14:08:30,178 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 102 predicate places. [2024-11-13 14:08:30,178 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 0 transitions, 0 flow [2024-11-13 14:08:30,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 8.68421052631579) internal successors, (330), 38 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:08:30,181 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-13 14:08:30,182 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 14 remaining) [2024-11-13 14:08:30,182 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2024-11-13 14:08:30,182 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2024-11-13 14:08:30,182 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2024-11-13 14:08:30,182 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2024-11-13 14:08:30,182 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2024-11-13 14:08:30,182 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2024-11-13 14:08:30,183 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2024-11-13 14:08:30,183 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2024-11-13 14:08:30,183 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2024-11-13 14:08:30,183 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2024-11-13 14:08:30,183 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2024-11-13 14:08:30,183 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2024-11-13 14:08:30,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 14:08:30,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 14:08:30,384 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:30,389 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 14:08:30,389 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 14:08:30,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:08:30 BasicIcfg [2024-11-13 14:08:30,396 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 14:08:30,397 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 14:08:30,397 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 14:08:30,397 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 14:08:30,398 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:07:52" (3/4) ... [2024-11-13 14:08:30,400 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 14:08:30,403 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f1 [2024-11-13 14:08:30,403 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2024-11-13 14:08:30,407 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-11-13 14:08:30,408 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-13 14:08:30,408 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-13 14:08:30,408 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 14:08:30,500 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 14:08:30,501 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 14:08:30,501 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 14:08:30,502 INFO L158 Benchmark]: Toolchain (without parser) took 39769.78ms. Allocated memory was 117.4MB in the beginning and 2.0GB in the end (delta: 1.9GB). Free memory was 92.7MB in the beginning and 1.1GB in the end (delta: -959.8MB). Peak memory consumption was 967.9MB. Max. memory is 16.1GB. [2024-11-13 14:08:30,503 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 167.8MB. Free memory is still 104.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:08:30,503 INFO L158 Benchmark]: CACSL2BoogieTranslator took 609.38ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 72.8MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 14:08:30,504 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.28ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 71.0MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:08:30,504 INFO L158 Benchmark]: Boogie Preprocessor took 48.26ms. Allocated memory is still 117.4MB. Free memory was 71.0MB in the beginning and 69.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:08:30,505 INFO L158 Benchmark]: RCFGBuilder took 839.34ms. Allocated memory is still 117.4MB. Free memory was 69.3MB in the beginning and 45.9MB in the end (delta: 23.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 14:08:30,505 INFO L158 Benchmark]: TraceAbstraction took 38099.22ms. Allocated memory was 117.4MB in the beginning and 2.0GB in the end (delta: 1.9GB). Free memory was 45.5MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 917.6MB. Max. memory is 16.1GB. [2024-11-13 14:08:30,505 INFO L158 Benchmark]: Witness Printer took 104.48ms. Allocated memory is still 2.0GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:08:30,507 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 167.8MB. Free memory is still 104.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 609.38ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 72.8MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.28ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 71.0MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.26ms. Allocated memory is still 117.4MB. Free memory was 71.0MB in the beginning and 69.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 839.34ms. Allocated memory is still 117.4MB. Free memory was 69.3MB in the beginning and 45.9MB in the end (delta: 23.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 38099.22ms. Allocated memory was 117.4MB in the beginning and 2.0GB in the end (delta: 1.9GB). Free memory was 45.5MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 917.6MB. Max. memory is 16.1GB. * Witness Printer took 104.48ms. Allocated memory is still 2.0GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 770]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 770]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 37.9s, OverallIterations: 14, TraceHistogramMax: 13, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 27.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5182 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5132 mSDsluCounter, 1513 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1490 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5238 IncrementalHoareTripleChecker+Invalid, 5301 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 23 mSDtfsCounter, 5238 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 958 GetRequests, 506 SyntacticMatches, 6 SemanticMatches, 446 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10476 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1146occurred in iteration=12, InterpolantAutomatonStates: 324, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 535 NumberOfCodeBlocks, 439 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 731 ConstructedInterpolants, 0 QuantifiedInterpolants, 1951 SizeOfPredicates, 44 NumberOfNonLiveVariables, 784 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 32 InterpolantComputations, 6 PerfectInterpolantSequences, 932/1880 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-13 14:08:30,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14cfe62-f062-4168-906a-171879285d06/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE