./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 4eda2bf92bccdcc8638b67653fb7fdefc015ff9c815b317ad1009deb61d04585 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 22:04:46,337 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 22:04:46,414 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 22:04:46,419 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 22:04:46,420 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 22:04:46,446 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 22:04:46,447 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 22:04:46,448 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 22:04:46,448 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 22:04:46,450 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 22:04:46,450 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 22:04:46,451 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 22:04:46,451 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 22:04:46,453 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 22:04:46,453 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 22:04:46,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 22:04:46,454 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 22:04:46,454 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 22:04:46,454 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 22:04:46,455 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 22:04:46,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 22:04:46,458 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 22:04:46,459 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 22:04:46,459 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 22:04:46,459 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 22:04:46,459 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 22:04:46,460 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 22:04:46,460 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 22:04:46,460 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 22:04:46,460 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 22:04:46,461 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 22:04:46,461 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 22:04:46,461 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 22:04:46,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 22:04:46,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:04:46,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 22:04:46,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 22:04:46,462 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 22:04:46,462 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 22:04:46,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 22:04:46,463 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 22:04:46,463 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 22:04:46,463 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 22:04:46,463 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 22:04:46,464 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eda2bf92bccdcc8638b67653fb7fdefc015ff9c815b317ad1009deb61d04585 [2024-11-20 22:04:46,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 22:04:46,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 22:04:46,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 22:04:46,745 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 22:04:46,745 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 22:04:46,746 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2024-11-20 22:04:48,124 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 22:04:48,328 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 22:04:48,328 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2024-11-20 22:04:48,336 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bc6dbd99/0a17d9e0654d461e9b35ba7b938479b0/FLAG739592861 [2024-11-20 22:04:48,350 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bc6dbd99/0a17d9e0654d461e9b35ba7b938479b0 [2024-11-20 22:04:48,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 22:04:48,355 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 22:04:48,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 22:04:48,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 22:04:48,364 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 22:04:48,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:04:48" (1/1) ... [2024-11-20 22:04:48,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e9690ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:48, skipping insertion in model container [2024-11-20 22:04:48,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:04:48" (1/1) ... [2024-11-20 22:04:48,392 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 22:04:48,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:04:48,600 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 22:04:48,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:04:48,641 INFO L204 MainTranslator]: Completed translation [2024-11-20 22:04:48,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:48 WrapperNode [2024-11-20 22:04:48,642 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 22:04:48,643 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 22:04:48,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 22:04:48,643 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 22:04:48,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:48" (1/1) ... [2024-11-20 22:04:48,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:48" (1/1) ... [2024-11-20 22:04:48,691 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 160 [2024-11-20 22:04:48,693 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 22:04:48,694 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 22:04:48,694 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 22:04:48,694 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 22:04:48,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:48" (1/1) ... [2024-11-20 22:04:48,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:48" (1/1) ... [2024-11-20 22:04:48,718 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:48" (1/1) ... [2024-11-20 22:04:48,760 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-20 22:04:48,760 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:48" (1/1) ... [2024-11-20 22:04:48,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:48" (1/1) ... [2024-11-20 22:04:48,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:48" (1/1) ... [2024-11-20 22:04:48,769 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:48" (1/1) ... [2024-11-20 22:04:48,770 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:48" (1/1) ... [2024-11-20 22:04:48,771 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:48" (1/1) ... [2024-11-20 22:04:48,774 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 22:04:48,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 22:04:48,775 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 22:04:48,775 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 22:04:48,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:48" (1/1) ... [2024-11-20 22:04:48,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:04:48,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:48,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 22:04:48,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 22:04:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 22:04:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 22:04:48,849 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 22:04:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 22:04:48,849 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 22:04:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 22:04:48,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 22:04:48,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 22:04:48,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 22:04:48,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 22:04:48,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 22:04:48,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 22:04:48,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 22:04:48,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 22:04:48,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 22:04:48,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 22:04:48,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 22:04:48,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 22:04:48,852 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 22:04:48,938 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 22:04:48,940 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 22:04:49,239 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 22:04:49,240 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 22:04:49,467 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 22:04:49,468 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-20 22:04:49,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:04:49 BoogieIcfgContainer [2024-11-20 22:04:49,469 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 22:04:49,470 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 22:04:49,471 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 22:04:49,475 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 22:04:49,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:04:48" (1/3) ... [2024-11-20 22:04:49,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a09dcd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:04:49, skipping insertion in model container [2024-11-20 22:04:49,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:48" (2/3) ... [2024-11-20 22:04:49,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a09dcd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:04:49, skipping insertion in model container [2024-11-20 22:04:49,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:04:49" (3/3) ... [2024-11-20 22:04:49,480 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive.wvr.c [2024-11-20 22:04:49,495 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 22:04:49,495 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-20 22:04:49,495 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 22:04:49,559 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 22:04:49,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2024-11-20 22:04:49,642 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2024-11-20 22:04:49,642 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 22:04:49,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 4/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 118 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-20 22:04:49,647 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2024-11-20 22:04:49,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 41 transitions, 94 flow [2024-11-20 22:04:49,662 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 22:04:49,669 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;@66165ccb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 22:04:49,669 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-20 22:04:49,675 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 22:04:49,676 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-20 22:04:49,676 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 22:04:49,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:49,677 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-20 22:04:49,677 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:04:49,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:49,683 INFO L85 PathProgramCache]: Analyzing trace with hash 481343, now seen corresponding path program 1 times [2024-11-20 22:04:49,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:49,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091293179] [2024-11-20 22:04:49,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:49,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:49,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:49,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091293179] [2024-11-20 22:04:49,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091293179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:49,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:49,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 22:04:49,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806543946] [2024-11-20 22:04:49,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:49,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:04:50,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:50,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:04:50,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:04:50,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-20 22:04:50,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:50,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:50,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-20 22:04:50,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:50,358 INFO L124 PetriNetUnfolderBase]: 641/1139 cut-off events. [2024-11-20 22:04:50,358 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-20 22:04:50,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 1139 events. 641/1139 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8283 event pairs, 594 based on Foata normal form. 1/689 useless extension candidates. Maximal degree in co-relation 2142. Up to 994 conditions per place. [2024-11-20 22:04:50,378 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 27 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-11-20 22:04:50,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 160 flow [2024-11-20 22:04:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:04:50,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:04:50,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-20 22:04:50,392 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-20 22:04:50,394 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 94 flow. Second operand 4 states and 94 transitions. [2024-11-20 22:04:50,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 160 flow [2024-11-20 22:04:50,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 154 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 22:04:50,428 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 115 flow [2024-11-20 22:04:50,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2024-11-20 22:04:50,436 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2024-11-20 22:04:50,436 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 115 flow [2024-11-20 22:04:50,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:50,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:50,437 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-20 22:04:50,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 22:04:50,437 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:04:50,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:50,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1455239938, now seen corresponding path program 1 times [2024-11-20 22:04:50,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:50,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479212150] [2024-11-20 22:04:50,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:50,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:50,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:50,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479212150] [2024-11-20 22:04:50,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479212150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:50,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082194535] [2024-11-20 22:04:50,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:50,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:50,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:50,567 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:50,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 22:04:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:50,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:04:50,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:50,715 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:04:50,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082194535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:50,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:04:50,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-20 22:04:50,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406954988] [2024-11-20 22:04:50,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:50,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 22:04:50,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:50,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:04:50,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 22:04:50,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-20 22:04:50,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:50,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:50,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-20 22:04:50,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:50,985 INFO L124 PetriNetUnfolderBase]: 641/1138 cut-off events. [2024-11-20 22:04:50,986 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 22:04:50,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2269 conditions, 1138 events. 641/1138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8346 event pairs, 594 based on Foata normal form. 1/689 useless extension candidates. Maximal degree in co-relation 2242. Up to 989 conditions per place. [2024-11-20 22:04:50,995 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 23 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-11-20 22:04:50,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 171 flow [2024-11-20 22:04:50,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:04:50,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:04:50,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-11-20 22:04:50,999 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42907801418439717 [2024-11-20 22:04:51,000 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 115 flow. Second operand 6 states and 121 transitions. [2024-11-20 22:04:51,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 171 flow [2024-11-20 22:04:51,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:04:51,003 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 122 flow [2024-11-20 22:04:51,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-11-20 22:04:51,006 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2024-11-20 22:04:51,006 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 122 flow [2024-11-20 22:04:51,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:51,007 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:51,007 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-20 22:04:51,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 22:04:51,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:51,210 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:04:51,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:51,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2132201723, now seen corresponding path program 1 times [2024-11-20 22:04:51,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:51,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113666960] [2024-11-20 22:04:51,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:51,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:51,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:51,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113666960] [2024-11-20 22:04:51,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113666960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:51,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366204811] [2024-11-20 22:04:51,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:51,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:51,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:51,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:51,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 22:04:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:51,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:04:51,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:51,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:51,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:51,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366204811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:51,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:51,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-20 22:04:51,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788331668] [2024-11-20 22:04:51,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:51,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 22:04:51,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:51,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 22:04:51,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 22:04:51,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-20 22:04:51,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 122 flow. Second operand has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 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) [2024-11-20 22:04:51,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:51,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-20 22:04:51,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:51,716 INFO L124 PetriNetUnfolderBase]: 644/1150 cut-off events. [2024-11-20 22:04:51,716 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-20 22:04:51,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 1150 events. 644/1150 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8318 event pairs, 594 based on Foata normal form. 3/701 useless extension candidates. Maximal degree in co-relation 2243. Up to 996 conditions per place. [2024-11-20 22:04:51,726 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 26 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2024-11-20 22:04:51,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 254 flow [2024-11-20 22:04:51,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:04:51,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:04:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-11-20 22:04:51,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4085106382978723 [2024-11-20 22:04:51,730 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 122 flow. Second operand 10 states and 192 transitions. [2024-11-20 22:04:51,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 254 flow [2024-11-20 22:04:51,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 208 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-20 22:04:51,734 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 174 flow [2024-11-20 22:04:51,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=174, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-20 22:04:51,735 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 10 predicate places. [2024-11-20 22:04:51,735 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 174 flow [2024-11-20 22:04:51,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 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) [2024-11-20 22:04:51,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:51,736 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:51,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 22:04:51,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-20 22:04:51,937 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:04:51,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:51,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2058279086, now seen corresponding path program 1 times [2024-11-20 22:04:51,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:51,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555833660] [2024-11-20 22:04:51,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:51,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:52,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:52,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:52,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555833660] [2024-11-20 22:04:52,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555833660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:52,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:52,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 22:04:52,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670552735] [2024-11-20 22:04:52,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:52,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:04:52,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:52,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:04:52,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:04:52,011 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-20 22:04:52,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-20 22:04:52,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:52,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-20 22:04:52,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:52,189 INFO L124 PetriNetUnfolderBase]: 921/1501 cut-off events. [2024-11-20 22:04:52,189 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-11-20 22:04:52,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2976 conditions, 1501 events. 921/1501 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7857 event pairs, 301 based on Foata normal form. 48/989 useless extension candidates. Maximal degree in co-relation 2942. Up to 1026 conditions per place. [2024-11-20 22:04:52,200 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 48 selfloop transitions, 3 changer transitions 1/65 dead transitions. [2024-11-20 22:04:52,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 65 transitions, 309 flow [2024-11-20 22:04:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:04:52,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:04:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-20 22:04:52,202 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6737588652482269 [2024-11-20 22:04:52,202 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 174 flow. Second operand 3 states and 95 transitions. [2024-11-20 22:04:52,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 65 transitions, 309 flow [2024-11-20 22:04:52,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 298 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-20 22:04:52,204 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 188 flow [2024-11-20 22:04:52,204 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-11-20 22:04:52,205 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2024-11-20 22:04:52,205 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 188 flow [2024-11-20 22:04:52,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-20 22:04:52,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:52,206 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:52,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 22:04:52,206 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:04:52,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:52,206 INFO L85 PathProgramCache]: Analyzing trace with hash -80674940, now seen corresponding path program 1 times [2024-11-20 22:04:52,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:52,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775565099] [2024-11-20 22:04:52,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:52,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:52,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:52,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775565099] [2024-11-20 22:04:52,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775565099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:52,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:52,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 22:04:52,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560720785] [2024-11-20 22:04:52,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:52,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:04:52,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:52,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:04:52,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:04:52,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-20 22:04:52,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-11-20 22:04:52,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:52,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-20 22:04:52,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:52,438 INFO L124 PetriNetUnfolderBase]: 681/1097 cut-off events. [2024-11-20 22:04:52,438 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-11-20 22:04:52,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2566 conditions, 1097 events. 681/1097 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5431 event pairs, 436 based on Foata normal form. 0/804 useless extension candidates. Maximal degree in co-relation 2531. Up to 970 conditions per place. [2024-11-20 22:04:52,445 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 37 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2024-11-20 22:04:52,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 260 flow [2024-11-20 22:04:52,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:04:52,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:04:52,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-20 22:04:52,447 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-11-20 22:04:52,447 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 188 flow. Second operand 3 states and 77 transitions. [2024-11-20 22:04:52,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 260 flow [2024-11-20 22:04:52,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:04:52,451 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 183 flow [2024-11-20 22:04:52,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-20 22:04:52,452 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 10 predicate places. [2024-11-20 22:04:52,454 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 183 flow [2024-11-20 22:04:52,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-11-20 22:04:52,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:52,454 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:52,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 22:04:52,454 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:04:52,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:52,456 INFO L85 PathProgramCache]: Analyzing trace with hash -80674939, now seen corresponding path program 1 times [2024-11-20 22:04:52,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:52,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875177603] [2024-11-20 22:04:52,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:52,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:52,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:52,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875177603] [2024-11-20 22:04:52,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875177603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:52,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:52,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:04:52,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281350157] [2024-11-20 22:04:52,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:52,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:04:52,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:52,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:04:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:04:52,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-20 22:04:52,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-11-20 22:04:52,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:52,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-20 22:04:52,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:52,705 INFO L124 PetriNetUnfolderBase]: 732/1212 cut-off events. [2024-11-20 22:04:52,705 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-11-20 22:04:52,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 1212 events. 732/1212 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6163 event pairs, 488 based on Foata normal form. 0/920 useless extension candidates. Maximal degree in co-relation 2756. Up to 968 conditions per place. [2024-11-20 22:04:52,714 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 35 selfloop transitions, 2 changer transitions 12/62 dead transitions. [2024-11-20 22:04:52,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 309 flow [2024-11-20 22:04:52,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:04:52,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:04:52,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-11-20 22:04:52,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2024-11-20 22:04:52,715 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 183 flow. Second operand 4 states and 107 transitions. [2024-11-20 22:04:52,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 309 flow [2024-11-20 22:04:52,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:04:52,718 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 185 flow [2024-11-20 22:04:52,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-11-20 22:04:52,719 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 13 predicate places. [2024-11-20 22:04:52,719 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 185 flow [2024-11-20 22:04:52,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-11-20 22:04:52,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:52,719 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:52,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 22:04:52,720 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:04:52,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:52,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2140607330, now seen corresponding path program 1 times [2024-11-20 22:04:52,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:52,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33812454] [2024-11-20 22:04:52,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:52,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:52,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:52,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:52,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33812454] [2024-11-20 22:04:52,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33812454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:52,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591577307] [2024-11-20 22:04:52,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:52,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:52,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:52,858 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:52,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 22:04:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:52,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:04:52,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:52,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:04:52,989 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:04:52,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591577307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:52,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:04:52,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-11-20 22:04:52,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066814551] [2024-11-20 22:04:52,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:52,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:04:52,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:52,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:04:52,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-20 22:04:52,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-20 22:04:52,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2024-11-20 22:04:52,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:52,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-20 22:04:52,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:53,104 INFO L124 PetriNetUnfolderBase]: 380/698 cut-off events. [2024-11-20 22:04:53,105 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-11-20 22:04:53,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1583 conditions, 698 events. 380/698 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3447 event pairs, 148 based on Foata normal form. 92/643 useless extension candidates. Maximal degree in co-relation 1568. Up to 399 conditions per place. [2024-11-20 22:04:53,109 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 33 selfloop transitions, 6 changer transitions 4/56 dead transitions. [2024-11-20 22:04:53,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 290 flow [2024-11-20 22:04:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:04:53,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:04:53,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-20 22:04:53,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-11-20 22:04:53,111 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 185 flow. Second operand 4 states and 102 transitions. [2024-11-20 22:04:53,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 290 flow [2024-11-20 22:04:53,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 284 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-20 22:04:53,113 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 178 flow [2024-11-20 22:04:53,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-11-20 22:04:53,114 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2024-11-20 22:04:53,114 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 178 flow [2024-11-20 22:04:53,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2024-11-20 22:04:53,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:53,115 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-20 22:04:53,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 22:04:53,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:53,319 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:04:53,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:53,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1730512680, now seen corresponding path program 2 times [2024-11-20 22:04:53,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:53,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541653237] [2024-11-20 22:04:53,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:53,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:53,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:53,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541653237] [2024-11-20 22:04:53,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541653237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:53,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175034739] [2024-11-20 22:04:53,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:04:53,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:53,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:53,479 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:53,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 22:04:53,541 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 22:04:53,541 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:04:53,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:04:53,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 22:04:53,592 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 22:04:53,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175034739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:53,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:53,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-20 22:04:53,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763788188] [2024-11-20 22:04:53,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:53,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 22:04:53,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:53,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 22:04:53,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-20 22:04:53,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-20 22:04:53,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 178 flow. Second operand has 14 states, 14 states have (on average 16.142857142857142) internal successors, (226), 14 states have internal predecessors, (226), 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) [2024-11-20 22:04:53,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:53,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-20 22:04:53,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:53,901 INFO L124 PetriNetUnfolderBase]: 240/417 cut-off events. [2024-11-20 22:04:53,902 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2024-11-20 22:04:53,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 417 events. 240/417 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1559 event pairs, 127 based on Foata normal form. 2/326 useless extension candidates. Maximal degree in co-relation 1087. Up to 339 conditions per place. [2024-11-20 22:04:53,905 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 17 selfloop transitions, 18 changer transitions 0/47 dead transitions. [2024-11-20 22:04:53,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 47 transitions, 254 flow [2024-11-20 22:04:53,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 22:04:53,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-20 22:04:53,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 245 transitions. [2024-11-20 22:04:53,906 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3723404255319149 [2024-11-20 22:04:53,906 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 178 flow. Second operand 14 states and 245 transitions. [2024-11-20 22:04:53,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 47 transitions, 254 flow [2024-11-20 22:04:53,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 47 transitions, 230 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-20 22:04:53,908 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 196 flow [2024-11-20 22:04:53,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=196, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-11-20 22:04:53,909 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2024-11-20 22:04:53,909 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 196 flow [2024-11-20 22:04:53,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.142857142857142) internal successors, (226), 14 states have internal predecessors, (226), 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) [2024-11-20 22:04:53,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:53,910 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:53,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 22:04:54,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:54,114 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:04:54,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:54,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1814298192, now seen corresponding path program 1 times [2024-11-20 22:04:54,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:54,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141327910] [2024-11-20 22:04:54,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:54,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:54,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:54,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141327910] [2024-11-20 22:04:54,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141327910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:54,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052613155] [2024-11-20 22:04:54,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:54,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:54,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:54,538 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:54,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 22:04:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:54,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-20 22:04:54,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:54,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-20 22:04:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:55,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:55,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-20 22:04:55,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-11-20 22:04:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:55,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052613155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:55,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:55,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2024-11-20 22:04:55,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681484635] [2024-11-20 22:04:55,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:55,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 22:04:55,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:55,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 22:04:55,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-20 22:04:55,537 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-20 22:04:55,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 196 flow. Second operand has 18 states, 18 states have (on average 16.833333333333332) internal successors, (303), 18 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:55,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:55,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-20 22:04:55,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:57,410 INFO L124 PetriNetUnfolderBase]: 852/1745 cut-off events. [2024-11-20 22:04:57,410 INFO L125 PetriNetUnfolderBase]: For 434/434 co-relation queries the response was YES. [2024-11-20 22:04:57,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 1745 events. 852/1745 cut-off events. For 434/434 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10914 event pairs, 111 based on Foata normal form. 54/1399 useless extension candidates. Maximal degree in co-relation 3780. Up to 565 conditions per place. [2024-11-20 22:04:57,421 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 121 selfloop transitions, 40 changer transitions 5/178 dead transitions. [2024-11-20 22:04:57,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 178 transitions, 898 flow [2024-11-20 22:04:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-20 22:04:57,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-20 22:04:57,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 528 transitions. [2024-11-20 22:04:57,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4884366327474561 [2024-11-20 22:04:57,424 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 196 flow. Second operand 23 states and 528 transitions. [2024-11-20 22:04:57,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 178 transitions, 898 flow [2024-11-20 22:04:57,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 178 transitions, 830 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-11-20 22:04:57,428 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 462 flow [2024-11-20 22:04:57,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=462, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2024-11-20 22:04:57,428 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 39 predicate places. [2024-11-20 22:04:57,428 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 462 flow [2024-11-20 22:04:57,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.833333333333332) internal successors, (303), 18 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:57,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:57,429 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:57,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 22:04:57,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:57,630 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:04:57,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:57,630 INFO L85 PathProgramCache]: Analyzing trace with hash -268535991, now seen corresponding path program 1 times [2024-11-20 22:04:57,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:57,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439530478] [2024-11-20 22:04:57,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:57,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:04:57,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:57,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439530478] [2024-11-20 22:04:57,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439530478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:57,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:57,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:04:57,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741991381] [2024-11-20 22:04:57,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:57,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:04:57,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:57,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:04:57,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:04:57,679 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-20 22:04:57,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 462 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-11-20 22:04:57,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:57,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-20 22:04:57,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:57,872 INFO L124 PetriNetUnfolderBase]: 894/1554 cut-off events. [2024-11-20 22:04:57,872 INFO L125 PetriNetUnfolderBase]: For 13143/13143 co-relation queries the response was YES. [2024-11-20 22:04:57,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6166 conditions, 1554 events. 894/1554 cut-off events. For 13143/13143 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8795 event pairs, 321 based on Foata normal form. 18/1501 useless extension candidates. Maximal degree in co-relation 6140. Up to 1126 conditions per place. [2024-11-20 22:04:57,885 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 66 selfloop transitions, 2 changer transitions 1/79 dead transitions. [2024-11-20 22:04:57,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 628 flow [2024-11-20 22:04:57,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:04:57,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:04:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-11-20 22:04:57,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-11-20 22:04:57,887 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 462 flow. Second operand 3 states and 78 transitions. [2024-11-20 22:04:57,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 628 flow [2024-11-20 22:04:57,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 566 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-11-20 22:04:57,913 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 344 flow [2024-11-20 22:04:57,914 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2024-11-20 22:04:57,914 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 29 predicate places. [2024-11-20 22:04:57,914 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 344 flow [2024-11-20 22:04:57,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-11-20 22:04:57,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:57,914 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:57,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 22:04:57,915 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:04:57,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:57,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1850361159, now seen corresponding path program 1 times [2024-11-20 22:04:57,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:57,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522270299] [2024-11-20 22:04:57,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:57,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:58,837 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:58,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:58,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522270299] [2024-11-20 22:04:58,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522270299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:58,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59169299] [2024-11-20 22:04:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:58,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:58,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:58,841 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:58,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 22:04:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:58,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 22:04:58,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:59,106 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:04:59,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:59,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 22:04:59,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-20 22:04:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-20 22:04:59,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59169299] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:59,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 22:04:59,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10, 6] total 18 [2024-11-20 22:04:59,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327823189] [2024-11-20 22:04:59,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:59,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:04:59,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:59,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:04:59,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-20 22:04:59,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-20 22:04:59,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-20 22:04:59,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:59,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-20 22:04:59,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:59,395 INFO L124 PetriNetUnfolderBase]: 594/1218 cut-off events. [2024-11-20 22:04:59,395 INFO L125 PetriNetUnfolderBase]: For 5654/5654 co-relation queries the response was YES. [2024-11-20 22:04:59,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4048 conditions, 1218 events. 594/1218 cut-off events. For 5654/5654 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6976 event pairs, 69 based on Foata normal form. 48/1245 useless extension candidates. Maximal degree in co-relation 4025. Up to 409 conditions per place. [2024-11-20 22:04:59,406 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 60 selfloop transitions, 9 changer transitions 1/83 dead transitions. [2024-11-20 22:04:59,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 83 transitions, 556 flow [2024-11-20 22:04:59,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:04:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:04:59,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-20 22:04:59,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2024-11-20 22:04:59,407 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 344 flow. Second operand 4 states and 105 transitions. [2024-11-20 22:04:59,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 83 transitions, 556 flow [2024-11-20 22:04:59,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 541 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 22:04:59,415 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 374 flow [2024-11-20 22:04:59,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2024-11-20 22:04:59,415 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 32 predicate places. [2024-11-20 22:04:59,416 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 374 flow [2024-11-20 22:04:59,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-20 22:04:59,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:59,416 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:59,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 22:04:59,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:59,621 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:04:59,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:59,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1348424623, now seen corresponding path program 1 times [2024-11-20 22:04:59,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:59,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051271488] [2024-11-20 22:04:59,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:59,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 22:04:59,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:59,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051271488] [2024-11-20 22:04:59,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051271488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:59,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520946695] [2024-11-20 22:04:59,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:59,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:59,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:59,712 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:59,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 22:04:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:59,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:04:59,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 22:04:59,828 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:04:59,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520946695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:59,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:04:59,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2024-11-20 22:04:59,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768434822] [2024-11-20 22:04:59,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:59,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:04:59,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:59,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:04:59,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-20 22:04:59,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-20 22:04:59,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 374 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2024-11-20 22:04:59,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:59,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-20 22:04:59,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:05:00,043 INFO L124 PetriNetUnfolderBase]: 852/1692 cut-off events. [2024-11-20 22:05:00,043 INFO L125 PetriNetUnfolderBase]: For 10766/10766 co-relation queries the response was YES. [2024-11-20 22:05:00,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6263 conditions, 1692 events. 852/1692 cut-off events. For 10766/10766 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10270 event pairs, 159 based on Foata normal form. 66/1726 useless extension candidates. Maximal degree in co-relation 6238. Up to 631 conditions per place. [2024-11-20 22:05:00,058 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 62 selfloop transitions, 18 changer transitions 1/94 dead transitions. [2024-11-20 22:05:00,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 94 transitions, 727 flow [2024-11-20 22:05:00,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:05:00,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:05:00,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-20 22:05:00,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5797872340425532 [2024-11-20 22:05:00,060 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 374 flow. Second operand 4 states and 109 transitions. [2024-11-20 22:05:00,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 94 transitions, 727 flow [2024-11-20 22:05:00,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 94 transitions, 712 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-20 22:05:00,074 INFO L231 Difference]: Finished difference. Result has 83 places, 79 transitions, 542 flow [2024-11-20 22:05:00,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=542, PETRI_PLACES=83, PETRI_TRANSITIONS=79} [2024-11-20 22:05:00,076 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 36 predicate places. [2024-11-20 22:05:00,076 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 79 transitions, 542 flow [2024-11-20 22:05:00,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2024-11-20 22:05:00,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:05:00,077 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:05:00,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 22:05:00,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:00,282 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:05:00,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:05:00,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1850361158, now seen corresponding path program 2 times [2024-11-20 22:05:00,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:05:00,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529290651] [2024-11-20 22:05:00,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:00,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:05:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:01,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:05:01,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529290651] [2024-11-20 22:05:01,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529290651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:05:01,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495059015] [2024-11-20 22:05:01,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:05:01,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:01,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:05:01,200 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:05:01,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 22:05:01,269 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 22:05:01,270 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:05:01,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:05:01,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:05:01,368 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-20 22:05:01,368 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:05:01,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495059015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:05:01,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:05:01,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 12 [2024-11-20 22:05:01,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798463548] [2024-11-20 22:05:01,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:05:01,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:05:01,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:05:01,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:05:01,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-20 22:05:01,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-20 22:05:01,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 79 transitions, 542 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-20 22:05:01,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:05:01,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-20 22:05:01,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:05:01,573 INFO L124 PetriNetUnfolderBase]: 804/1698 cut-off events. [2024-11-20 22:05:01,573 INFO L125 PetriNetUnfolderBase]: For 9507/9507 co-relation queries the response was YES. [2024-11-20 22:05:01,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6448 conditions, 1698 events. 804/1698 cut-off events. For 9507/9507 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10719 event pairs, 81 based on Foata normal form. 36/1713 useless extension candidates. Maximal degree in co-relation 6420. Up to 787 conditions per place. [2024-11-20 22:05:01,588 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 72 selfloop transitions, 10 changer transitions 1/96 dead transitions. [2024-11-20 22:05:01,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 791 flow [2024-11-20 22:05:01,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:05:01,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:05:01,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-20 22:05:01,589 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-11-20 22:05:01,590 INFO L175 Difference]: Start difference. First operand has 83 places, 79 transitions, 542 flow. Second operand 4 states and 104 transitions. [2024-11-20 22:05:01,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 791 flow [2024-11-20 22:05:01,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 96 transitions, 775 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-20 22:05:01,604 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 526 flow [2024-11-20 22:05:01,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=526, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2024-11-20 22:05:01,605 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 37 predicate places. [2024-11-20 22:05:01,605 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 526 flow [2024-11-20 22:05:01,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-20 22:05:01,605 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:05:01,605 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:05:01,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-20 22:05:01,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-20 22:05:01,806 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:05:01,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:05:01,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1123608725, now seen corresponding path program 1 times [2024-11-20 22:05:01,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:05:01,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32758500] [2024-11-20 22:05:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:01,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:05:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:05:01,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:05:01,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32758500] [2024-11-20 22:05:01,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32758500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:05:01,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175798205] [2024-11-20 22:05:01,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:01,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:01,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:05:01,945 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:05:01,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 22:05:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:02,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 22:05:02,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:05:02,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:05:02,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:05:02,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:05:02,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175798205] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:05:02,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:05:02,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-20 22:05:02,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327886925] [2024-11-20 22:05:02,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:05:02,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 22:05:02,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:05:02,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 22:05:02,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-20 22:05:02,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-20 22:05:02,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 526 flow. Second operand has 18 states, 18 states have (on average 16.555555555555557) internal successors, (298), 18 states have internal predecessors, (298), 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) [2024-11-20 22:05:02,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:05:02,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-20 22:05:02,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:05:02,503 INFO L124 PetriNetUnfolderBase]: 558/1111 cut-off events. [2024-11-20 22:05:02,504 INFO L125 PetriNetUnfolderBase]: For 6899/6899 co-relation queries the response was YES. [2024-11-20 22:05:02,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4527 conditions, 1111 events. 558/1111 cut-off events. For 6899/6899 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6196 event pairs, 333 based on Foata normal form. 12/1072 useless extension candidates. Maximal degree in co-relation 4499. Up to 772 conditions per place. [2024-11-20 22:05:02,512 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 33 selfloop transitions, 12 changer transitions 22/80 dead transitions. [2024-11-20 22:05:02,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 571 flow [2024-11-20 22:05:02,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 22:05:02,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 22:05:02,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-11-20 22:05:02,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42789598108747046 [2024-11-20 22:05:02,514 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 526 flow. Second operand 9 states and 181 transitions. [2024-11-20 22:05:02,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 571 flow [2024-11-20 22:05:02,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 80 transitions, 530 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-11-20 22:05:02,527 INFO L231 Difference]: Finished difference. Result has 78 places, 58 transitions, 336 flow [2024-11-20 22:05:02,528 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=336, PETRI_PLACES=78, PETRI_TRANSITIONS=58} [2024-11-20 22:05:02,529 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2024-11-20 22:05:02,529 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 58 transitions, 336 flow [2024-11-20 22:05:02,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.555555555555557) internal successors, (298), 18 states have internal predecessors, (298), 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) [2024-11-20 22:05:02,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:05:02,529 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:05:02,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 22:05:02,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-20 22:05:02,730 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:05:02,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:05:02,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1834377532, now seen corresponding path program 2 times [2024-11-20 22:05:02,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:05:02,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630081014] [2024-11-20 22:05:02,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:02,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:05:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 22:05:02,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:05:02,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630081014] [2024-11-20 22:05:02,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630081014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:05:02,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:05:02,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 22:05:02,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046551721] [2024-11-20 22:05:02,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:05:02,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:05:02,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:05:02,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:05:02,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:05:02,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-11-20 22:05:02,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 58 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-20 22:05:02,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:05:02,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-11-20 22:05:02,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:05:03,076 INFO L124 PetriNetUnfolderBase]: 1211/2063 cut-off events. [2024-11-20 22:05:03,076 INFO L125 PetriNetUnfolderBase]: For 9538/9538 co-relation queries the response was YES. [2024-11-20 22:05:03,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8093 conditions, 2063 events. 1211/2063 cut-off events. For 9538/9538 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11407 event pairs, 188 based on Foata normal form. 120/2179 useless extension candidates. Maximal degree in co-relation 8070. Up to 942 conditions per place. [2024-11-20 22:05:03,092 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 64 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2024-11-20 22:05:03,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 607 flow [2024-11-20 22:05:03,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:05:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:05:03,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-20 22:05:03,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-20 22:05:03,094 INFO L175 Difference]: Start difference. First operand has 78 places, 58 transitions, 336 flow. Second operand 4 states and 94 transitions. [2024-11-20 22:05:03,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 607 flow [2024-11-20 22:05:03,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 77 transitions, 569 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-11-20 22:05:03,099 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 327 flow [2024-11-20 22:05:03,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=327, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2024-11-20 22:05:03,100 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 21 predicate places. [2024-11-20 22:05:03,100 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 327 flow [2024-11-20 22:05:03,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-20 22:05:03,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:05:03,100 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:05:03,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 22:05:03,101 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:05:03,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:05:03,101 INFO L85 PathProgramCache]: Analyzing trace with hash -219267832, now seen corresponding path program 1 times [2024-11-20 22:05:03,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:05:03,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938373753] [2024-11-20 22:05:03,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:03,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:05:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:03,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:03,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:05:03,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938373753] [2024-11-20 22:05:03,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938373753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:05:03,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190650137] [2024-11-20 22:05:03,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:03,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:03,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:05:03,747 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:05:03,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 22:05:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:03,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-20 22:05:03,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:05:04,314 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:04,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:05:04,552 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2024-11-20 22:05:04,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 43 [2024-11-20 22:05:04,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:04,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190650137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:05:04,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:05:04,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2024-11-20 22:05:04,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15629549] [2024-11-20 22:05:04,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:05:04,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-20 22:05:04,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:05:04,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-20 22:05:04,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2024-11-20 22:05:05,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-20 22:05:05,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 327 flow. Second operand has 32 states, 32 states have (on average 16.5) internal successors, (528), 32 states have internal predecessors, (528), 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) [2024-11-20 22:05:05,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:05:05,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-20 22:05:05,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:05:07,092 INFO L124 PetriNetUnfolderBase]: 2279/4549 cut-off events. [2024-11-20 22:05:07,092 INFO L125 PetriNetUnfolderBase]: For 19932/19932 co-relation queries the response was YES. [2024-11-20 22:05:07,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16426 conditions, 4549 events. 2279/4549 cut-off events. For 19932/19932 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 32967 event pairs, 164 based on Foata normal form. 168/4705 useless extension candidates. Maximal degree in co-relation 16405. Up to 1495 conditions per place. [2024-11-20 22:05:07,209 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 186 selfloop transitions, 80 changer transitions 5/285 dead transitions. [2024-11-20 22:05:07,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 285 transitions, 2037 flow [2024-11-20 22:05:07,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-20 22:05:07,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-20 22:05:07,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 759 transitions. [2024-11-20 22:05:07,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47496871088861076 [2024-11-20 22:05:07,215 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 327 flow. Second operand 34 states and 759 transitions. [2024-11-20 22:05:07,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 285 transitions, 2037 flow [2024-11-20 22:05:07,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 285 transitions, 2031 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-20 22:05:07,224 INFO L231 Difference]: Finished difference. Result has 114 places, 138 transitions, 1373 flow [2024-11-20 22:05:07,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1373, PETRI_PLACES=114, PETRI_TRANSITIONS=138} [2024-11-20 22:05:07,225 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 67 predicate places. [2024-11-20 22:05:07,225 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 138 transitions, 1373 flow [2024-11-20 22:05:07,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 16.5) internal successors, (528), 32 states have internal predecessors, (528), 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) [2024-11-20 22:05:07,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:05:07,226 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:05:07,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-20 22:05:07,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-20 22:05:07,426 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:05:07,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:05:07,427 INFO L85 PathProgramCache]: Analyzing trace with hash 257360822, now seen corresponding path program 1 times [2024-11-20 22:05:07,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:05:07,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755994226] [2024-11-20 22:05:07,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:07,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:05:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:08,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:05:08,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755994226] [2024-11-20 22:05:08,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755994226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:05:08,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853807579] [2024-11-20 22:05:08,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:08,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:08,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:05:08,728 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:05:08,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 22:05:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:08,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-20 22:05:08,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:05:09,061 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:05:09,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:05:09,207 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 22:05:09,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2024-11-20 22:05:09,304 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-20 22:05:09,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853807579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:05:09,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:05:09,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 4] total 24 [2024-11-20 22:05:09,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744675039] [2024-11-20 22:05:09,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:05:09,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 22:05:09,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:05:09,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 22:05:09,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2024-11-20 22:05:09,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-20 22:05:09,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 138 transitions, 1373 flow. Second operand has 26 states, 26 states have (on average 16.923076923076923) internal successors, (440), 26 states have internal predecessors, (440), 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) [2024-11-20 22:05:09,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:05:09,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-20 22:05:09,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:05:10,732 INFO L124 PetriNetUnfolderBase]: 3095/6275 cut-off events. [2024-11-20 22:05:10,732 INFO L125 PetriNetUnfolderBase]: For 68538/68538 co-relation queries the response was YES. [2024-11-20 22:05:10,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29327 conditions, 6275 events. 3095/6275 cut-off events. For 68538/68538 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 48821 event pairs, 153 based on Foata normal form. 318/6575 useless extension candidates. Maximal degree in co-relation 29291. Up to 2023 conditions per place. [2024-11-20 22:05:10,790 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 188 selfloop transitions, 76 changer transitions 6/284 dead transitions. [2024-11-20 22:05:10,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 284 transitions, 3014 flow [2024-11-20 22:05:10,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-20 22:05:10,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-20 22:05:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 545 transitions. [2024-11-20 22:05:10,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46382978723404256 [2024-11-20 22:05:10,793 INFO L175 Difference]: Start difference. First operand has 114 places, 138 transitions, 1373 flow. Second operand 25 states and 545 transitions. [2024-11-20 22:05:10,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 284 transitions, 3014 flow [2024-11-20 22:05:10,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 284 transitions, 2685 flow, removed 159 selfloop flow, removed 5 redundant places. [2024-11-20 22:05:10,843 INFO L231 Difference]: Finished difference. Result has 144 places, 166 transitions, 1693 flow [2024-11-20 22:05:10,845 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1693, PETRI_PLACES=144, PETRI_TRANSITIONS=166} [2024-11-20 22:05:10,845 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 97 predicate places. [2024-11-20 22:05:10,845 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 166 transitions, 1693 flow [2024-11-20 22:05:10,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.923076923076923) internal successors, (440), 26 states have internal predecessors, (440), 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) [2024-11-20 22:05:10,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:05:10,847 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:05:10,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 22:05:11,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-20 22:05:11,051 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:05:11,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:05:11,051 INFO L85 PathProgramCache]: Analyzing trace with hash -997958886, now seen corresponding path program 2 times [2024-11-20 22:05:11,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:05:11,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360011410] [2024-11-20 22:05:11,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:11,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:05:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:11,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:05:11,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360011410] [2024-11-20 22:05:11,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360011410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:05:11,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854495808] [2024-11-20 22:05:11,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:05:11,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:11,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:05:11,846 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:05:11,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 22:05:11,922 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 22:05:11,923 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:05:11,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-20 22:05:11,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:05:12,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 22:05:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:12,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:05:12,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2024-11-20 22:05:12,910 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 22:05:12,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 143 [2024-11-20 22:05:13,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:13,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854495808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:05:13,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:05:13,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2024-11-20 22:05:13,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546226789] [2024-11-20 22:05:13,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:05:13,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-20 22:05:13,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:05:13,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-20 22:05:13,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1009, Unknown=0, NotChecked=0, Total=1190 [2024-11-20 22:05:13,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-20 22:05:13,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 166 transitions, 1693 flow. Second operand has 35 states, 35 states have (on average 16.37142857142857) internal successors, (573), 35 states have internal predecessors, (573), 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) [2024-11-20 22:05:13,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:05:13,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-20 22:05:13,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:05:17,143 INFO L124 PetriNetUnfolderBase]: 5328/10509 cut-off events. [2024-11-20 22:05:17,143 INFO L125 PetriNetUnfolderBase]: For 152916/152916 co-relation queries the response was YES. [2024-11-20 22:05:17,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53281 conditions, 10509 events. 5328/10509 cut-off events. For 152916/152916 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 86349 event pairs, 401 based on Foata normal form. 372/10843 useless extension candidates. Maximal degree in co-relation 53233. Up to 2773 conditions per place. [2024-11-20 22:05:17,241 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 252 selfloop transitions, 196 changer transitions 6/468 dead transitions. [2024-11-20 22:05:17,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 468 transitions, 5427 flow [2024-11-20 22:05:17,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-20 22:05:17,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-20 22:05:17,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 877 transitions. [2024-11-20 22:05:17,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4664893617021277 [2024-11-20 22:05:17,244 INFO L175 Difference]: Start difference. First operand has 144 places, 166 transitions, 1693 flow. Second operand 40 states and 877 transitions. [2024-11-20 22:05:17,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 468 transitions, 5427 flow [2024-11-20 22:05:17,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 468 transitions, 5271 flow, removed 67 selfloop flow, removed 9 redundant places. [2024-11-20 22:05:17,514 INFO L231 Difference]: Finished difference. Result has 191 places, 296 transitions, 4447 flow [2024-11-20 22:05:17,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=4447, PETRI_PLACES=191, PETRI_TRANSITIONS=296} [2024-11-20 22:05:17,514 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 144 predicate places. [2024-11-20 22:05:17,515 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 296 transitions, 4447 flow [2024-11-20 22:05:17,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 16.37142857142857) internal successors, (573), 35 states have internal predecessors, (573), 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) [2024-11-20 22:05:17,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:05:17,516 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:05:17,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-20 22:05:17,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-20 22:05:17,721 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:05:17,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:05:17,801 INFO L85 PathProgramCache]: Analyzing trace with hash -997958887, now seen corresponding path program 2 times [2024-11-20 22:05:17,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:05:17,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478317836] [2024-11-20 22:05:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:17,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:05:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:18,637 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:18,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:05:18,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478317836] [2024-11-20 22:05:18,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478317836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:05:18,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799161490] [2024-11-20 22:05:18,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:05:18,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:18,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:05:18,641 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:05:18,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 22:05:18,728 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 22:05:18,728 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:05:18,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-20 22:05:18,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:05:18,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 22:05:19,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:19,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:05:19,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 72 [2024-11-20 22:05:19,813 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 22:05:19,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 143 [2024-11-20 22:05:20,512 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:20,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799161490] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:05:20,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:05:20,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 31 [2024-11-20 22:05:20,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422740357] [2024-11-20 22:05:20,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:05:20,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-20 22:05:20,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:05:20,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-20 22:05:20,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2024-11-20 22:05:20,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-20 22:05:20,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 296 transitions, 4447 flow. Second operand has 33 states, 33 states have (on average 16.454545454545453) internal successors, (543), 33 states have internal predecessors, (543), 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) [2024-11-20 22:05:20,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:05:20,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-20 22:05:20,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:05:23,784 INFO L124 PetriNetUnfolderBase]: 5454/10815 cut-off events. [2024-11-20 22:05:23,784 INFO L125 PetriNetUnfolderBase]: For 253720/253720 co-relation queries the response was YES. [2024-11-20 22:05:23,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62523 conditions, 10815 events. 5454/10815 cut-off events. For 253720/253720 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 89264 event pairs, 377 based on Foata normal form. 342/11116 useless extension candidates. Maximal degree in co-relation 62457. Up to 4272 conditions per place. [2024-11-20 22:05:23,890 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 332 selfloop transitions, 105 changer transitions 7/458 dead transitions. [2024-11-20 22:05:23,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 458 transitions, 6573 flow [2024-11-20 22:05:23,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-20 22:05:23,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-20 22:05:23,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 692 transitions. [2024-11-20 22:05:23,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4601063829787234 [2024-11-20 22:05:23,893 INFO L175 Difference]: Start difference. First operand has 191 places, 296 transitions, 4447 flow. Second operand 32 states and 692 transitions. [2024-11-20 22:05:23,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 458 transitions, 6573 flow [2024-11-20 22:05:24,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 458 transitions, 5327 flow, removed 597 selfloop flow, removed 16 redundant places. [2024-11-20 22:05:24,451 INFO L231 Difference]: Finished difference. Result has 215 places, 305 transitions, 4113 flow [2024-11-20 22:05:24,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3507, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=4113, PETRI_PLACES=215, PETRI_TRANSITIONS=305} [2024-11-20 22:05:24,452 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 168 predicate places. [2024-11-20 22:05:24,452 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 305 transitions, 4113 flow [2024-11-20 22:05:24,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 16.454545454545453) internal successors, (543), 33 states have internal predecessors, (543), 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) [2024-11-20 22:05:24,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:05:24,452 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:05:24,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-20 22:05:24,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:24,653 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:05:24,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:05:24,653 INFO L85 PathProgramCache]: Analyzing trace with hash 507440421, now seen corresponding path program 3 times [2024-11-20 22:05:24,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:05:24,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927742704] [2024-11-20 22:05:24,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:24,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:05:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:26,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:05:26,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927742704] [2024-11-20 22:05:26,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927742704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:05:26,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781384067] [2024-11-20 22:05:26,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 22:05:26,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:26,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:05:26,007 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:05:26,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 22:05:26,075 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 22:05:26,075 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:05:26,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 22:05:26,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:05:26,247 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-20 22:05:26,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:05:26,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 22:05:26,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2024-11-20 22:05:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-20 22:05:26,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781384067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:05:26,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:05:26,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 20 [2024-11-20 22:05:26,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791663529] [2024-11-20 22:05:26,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:05:26,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-20 22:05:26,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:05:26,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-20 22:05:26,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-11-20 22:05:26,557 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-20 22:05:26,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 305 transitions, 4113 flow. Second operand has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 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) [2024-11-20 22:05:26,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:05:26,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-20 22:05:26,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:05:28,976 INFO L124 PetriNetUnfolderBase]: 5256/10489 cut-off events. [2024-11-20 22:05:28,976 INFO L125 PetriNetUnfolderBase]: For 157980/157980 co-relation queries the response was YES. [2024-11-20 22:05:29,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52025 conditions, 10489 events. 5256/10489 cut-off events. For 157980/157980 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 86139 event pairs, 377 based on Foata normal form. 108/10571 useless extension candidates. Maximal degree in co-relation 51953. Up to 4585 conditions per place. [2024-11-20 22:05:29,080 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 299 selfloop transitions, 110 changer transitions 8/431 dead transitions. [2024-11-20 22:05:29,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 431 transitions, 5472 flow [2024-11-20 22:05:29,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-20 22:05:29,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-20 22:05:29,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 576 transitions. [2024-11-20 22:05:29,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45390070921985815 [2024-11-20 22:05:29,084 INFO L175 Difference]: Start difference. First operand has 215 places, 305 transitions, 4113 flow. Second operand 27 states and 576 transitions. [2024-11-20 22:05:29,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 431 transitions, 5472 flow [2024-11-20 22:05:29,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 431 transitions, 5140 flow, removed 81 selfloop flow, removed 24 redundant places. [2024-11-20 22:05:29,528 INFO L231 Difference]: Finished difference. Result has 219 places, 304 transitions, 3986 flow [2024-11-20 22:05:29,529 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3737, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3986, PETRI_PLACES=219, PETRI_TRANSITIONS=304} [2024-11-20 22:05:29,529 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 172 predicate places. [2024-11-20 22:05:29,529 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 304 transitions, 3986 flow [2024-11-20 22:05:29,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 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) [2024-11-20 22:05:29,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:05:29,530 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:05:29,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-20 22:05:29,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:29,730 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:05:29,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:05:29,731 INFO L85 PathProgramCache]: Analyzing trace with hash 815974286, now seen corresponding path program 4 times [2024-11-20 22:05:29,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:05:29,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132930398] [2024-11-20 22:05:29,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:29,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:05:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:05:30,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:05:30,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132930398] [2024-11-20 22:05:30,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132930398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:05:30,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516191730] [2024-11-20 22:05:30,007 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 22:05:30,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:30,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:05:30,010 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:05:30,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 22:05:30,098 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 22:05:30,099 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:05:30,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:05:30,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:05:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 22:05:30,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:05:30,356 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 22:05:30,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516191730] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:05:30,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:05:30,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 5] total 16 [2024-11-20 22:05:30,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275236001] [2024-11-20 22:05:30,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:05:30,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 22:05:30,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:05:30,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 22:05:30,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-20 22:05:30,382 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-20 22:05:30,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 304 transitions, 3986 flow. Second operand has 18 states, 18 states have (on average 17.555555555555557) internal successors, (316), 18 states have internal predecessors, (316), 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) [2024-11-20 22:05:30,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:05:30,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-20 22:05:30,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:05:31,981 INFO L124 PetriNetUnfolderBase]: 3654/8305 cut-off events. [2024-11-20 22:05:31,982 INFO L125 PetriNetUnfolderBase]: For 126596/126596 co-relation queries the response was YES. [2024-11-20 22:05:32,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34533 conditions, 8305 events. 3654/8305 cut-off events. For 126596/126596 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 73848 event pairs, 389 based on Foata normal form. 1296/9555 useless extension candidates. Maximal degree in co-relation 34467. Up to 1273 conditions per place. [2024-11-20 22:05:32,043 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 75 selfloop transitions, 64 changer transitions 162/315 dead transitions. [2024-11-20 22:05:32,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 315 transitions, 3641 flow [2024-11-20 22:05:32,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-20 22:05:32,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-20 22:05:32,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 473 transitions. [2024-11-20 22:05:32,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47922998986828774 [2024-11-20 22:05:32,045 INFO L175 Difference]: Start difference. First operand has 219 places, 304 transitions, 3986 flow. Second operand 21 states and 473 transitions. [2024-11-20 22:05:32,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 315 transitions, 3641 flow [2024-11-20 22:05:32,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 315 transitions, 3176 flow, removed 83 selfloop flow, removed 42 redundant places. [2024-11-20 22:05:32,219 INFO L231 Difference]: Finished difference. Result has 198 places, 129 transitions, 1521 flow [2024-11-20 22:05:32,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1870, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1521, PETRI_PLACES=198, PETRI_TRANSITIONS=129} [2024-11-20 22:05:32,219 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 151 predicate places. [2024-11-20 22:05:32,219 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 129 transitions, 1521 flow [2024-11-20 22:05:32,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.555555555555557) internal successors, (316), 18 states have internal predecessors, (316), 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) [2024-11-20 22:05:32,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:05:32,220 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:05:32,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-20 22:05:32,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:32,420 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:05:32,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:05:32,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1267789669, now seen corresponding path program 5 times [2024-11-20 22:05:32,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:05:32,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987592203] [2024-11-20 22:05:32,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:32,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:05:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:33,242 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:33,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:05:33,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987592203] [2024-11-20 22:05:33,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987592203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:05:33,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968121543] [2024-11-20 22:05:33,242 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 22:05:33,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:33,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:05:33,245 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:05:33,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-20 22:05:33,332 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-20 22:05:33,332 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:05:33,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-20 22:05:33,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:05:33,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-20 22:05:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:34,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:05:35,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 103 [2024-11-20 22:05:35,387 INFO L349 Elim1Store]: treesize reduction 18, result has 82.5 percent of original size [2024-11-20 22:05:35,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 302 treesize of output 287 [2024-11-20 22:05:40,176 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:40,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968121543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:05:40,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:05:40,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 44 [2024-11-20 22:05:40,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852294395] [2024-11-20 22:05:40,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:05:40,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-20 22:05:40,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:05:40,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-20 22:05:40,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1800, Unknown=0, NotChecked=0, Total=2070 [2024-11-20 22:05:40,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-20 22:05:40,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 129 transitions, 1521 flow. Second operand has 46 states, 46 states have (on average 16.369565217391305) internal successors, (753), 46 states have internal predecessors, (753), 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) [2024-11-20 22:05:40,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:05:40,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-20 22:05:40,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:05:47,102 INFO L124 PetriNetUnfolderBase]: 5861/11810 cut-off events. [2024-11-20 22:05:47,102 INFO L125 PetriNetUnfolderBase]: For 182632/182632 co-relation queries the response was YES. [2024-11-20 22:05:47,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59718 conditions, 11810 events. 5861/11810 cut-off events. For 182632/182632 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 101225 event pairs, 358 based on Foata normal form. 348/12141 useless extension candidates. Maximal degree in co-relation 59665. Up to 3379 conditions per place. [2024-11-20 22:05:47,225 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 414 selfloop transitions, 218 changer transitions 16/662 dead transitions. [2024-11-20 22:05:47,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 662 transitions, 7527 flow [2024-11-20 22:05:47,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-20 22:05:47,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2024-11-20 22:05:47,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 1563 transitions. [2024-11-20 22:05:47,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47507598784194527 [2024-11-20 22:05:47,228 INFO L175 Difference]: Start difference. First operand has 198 places, 129 transitions, 1521 flow. Second operand 70 states and 1563 transitions. [2024-11-20 22:05:47,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 662 transitions, 7527 flow [2024-11-20 22:05:47,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 662 transitions, 6873 flow, removed 297 selfloop flow, removed 22 redundant places. [2024-11-20 22:05:47,775 INFO L231 Difference]: Finished difference. Result has 233 places, 316 transitions, 5207 flow [2024-11-20 22:05:47,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=5207, PETRI_PLACES=233, PETRI_TRANSITIONS=316} [2024-11-20 22:05:47,776 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 186 predicate places. [2024-11-20 22:05:47,776 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 316 transitions, 5207 flow [2024-11-20 22:05:47,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 16.369565217391305) internal successors, (753), 46 states have internal predecessors, (753), 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) [2024-11-20 22:05:47,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:05:47,777 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:05:47,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-20 22:05:47,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-20 22:05:47,978 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:05:47,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:05:47,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1331895836, now seen corresponding path program 3 times [2024-11-20 22:05:47,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:05:47,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452827189] [2024-11-20 22:05:47,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:47,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:05:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:48,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:05:48,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452827189] [2024-11-20 22:05:48,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452827189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:05:48,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689477269] [2024-11-20 22:05:48,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 22:05:48,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:48,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:05:48,732 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:05:48,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-20 22:05:48,817 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-20 22:05:48,817 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:05:48,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 22:05:48,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:05:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 22:05:48,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:05:49,013 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-20 22:05:49,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-20 22:05:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-20 22:05:49,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689477269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:05:49,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:05:49,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 4, 6] total 24 [2024-11-20 22:05:49,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857716612] [2024-11-20 22:05:49,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:05:49,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 22:05:49,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:05:49,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 22:05:49,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2024-11-20 22:05:49,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-20 22:05:49,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 316 transitions, 5207 flow. Second operand has 26 states, 26 states have (on average 17.076923076923077) internal successors, (444), 26 states have internal predecessors, (444), 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) [2024-11-20 22:05:49,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:05:49,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-20 22:05:49,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:05:52,064 INFO L124 PetriNetUnfolderBase]: 5951/11910 cut-off events. [2024-11-20 22:05:52,064 INFO L125 PetriNetUnfolderBase]: For 366119/366119 co-relation queries the response was YES. [2024-11-20 22:05:52,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80210 conditions, 11910 events. 5951/11910 cut-off events. For 366119/366119 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 101322 event pairs, 376 based on Foata normal form. 96/11987 useless extension candidates. Maximal degree in co-relation 80131. Up to 5569 conditions per place. [2024-11-20 22:05:52,250 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 334 selfloop transitions, 64 changer transitions 8/420 dead transitions. [2024-11-20 22:05:52,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 420 transitions, 7092 flow [2024-11-20 22:05:52,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-20 22:05:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-20 22:05:52,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 488 transitions. [2024-11-20 22:05:52,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4514338575393155 [2024-11-20 22:05:52,252 INFO L175 Difference]: Start difference. First operand has 233 places, 316 transitions, 5207 flow. Second operand 23 states and 488 transitions. [2024-11-20 22:05:52,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 420 transitions, 7092 flow [2024-11-20 22:05:53,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 420 transitions, 5913 flow, removed 563 selfloop flow, removed 17 redundant places. [2024-11-20 22:05:53,453 INFO L231 Difference]: Finished difference. Result has 241 places, 317 transitions, 4351 flow [2024-11-20 22:05:53,454 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4020, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4351, PETRI_PLACES=241, PETRI_TRANSITIONS=317} [2024-11-20 22:05:53,454 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 194 predicate places. [2024-11-20 22:05:53,454 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 317 transitions, 4351 flow [2024-11-20 22:05:53,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 17.076923076923077) internal successors, (444), 26 states have internal predecessors, (444), 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) [2024-11-20 22:05:53,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:05:53,455 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:05:53,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-20 22:05:53,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:53,655 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:05:53,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:05:53,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1843363683, now seen corresponding path program 6 times [2024-11-20 22:05:53,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:05:53,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371285583] [2024-11-20 22:05:53,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:53,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:05:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:54,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:05:54,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371285583] [2024-11-20 22:05:54,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371285583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:05:54,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088697018] [2024-11-20 22:05:54,452 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 22:05:54,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:54,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:05:54,454 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:05:54,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-20 22:05:54,554 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-20 22:05:54,555 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:05:54,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-20 22:05:54,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:05:54,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-20 22:05:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:55,243 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:05:56,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 103 [2024-11-20 22:05:56,383 INFO L349 Elim1Store]: treesize reduction 46, result has 55.3 percent of original size [2024-11-20 22:05:56,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 302 treesize of output 259 [2024-11-20 22:05:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:57,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088697018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:05:57,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:05:57,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2024-11-20 22:05:57,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887125871] [2024-11-20 22:05:57,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:05:57,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-20 22:05:57,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:05:57,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-20 22:05:57,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1645, Unknown=0, NotChecked=0, Total=1892 [2024-11-20 22:05:58,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-20 22:05:58,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 317 transitions, 4351 flow. Second operand has 44 states, 44 states have (on average 16.431818181818183) internal successors, (723), 44 states have internal predecessors, (723), 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) [2024-11-20 22:05:58,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:05:58,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-20 22:05:58,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:06:02,749 INFO L124 PetriNetUnfolderBase]: 8297/16548 cut-off events. [2024-11-20 22:06:02,750 INFO L125 PetriNetUnfolderBase]: For 623874/623874 co-relation queries the response was YES. [2024-11-20 22:06:02,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108126 conditions, 16548 events. 8297/16548 cut-off events. For 623874/623874 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 144414 event pairs, 568 based on Foata normal form. 720/17249 useless extension candidates. Maximal degree in co-relation 108044. Up to 4075 conditions per place. [2024-11-20 22:06:03,084 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 304 selfloop transitions, 276 changer transitions 25/619 dead transitions. [2024-11-20 22:06:03,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 619 transitions, 9514 flow [2024-11-20 22:06:03,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-20 22:06:03,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-20 22:06:03,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 824 transitions. [2024-11-20 22:06:03,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46136618141097424 [2024-11-20 22:06:03,086 INFO L175 Difference]: Start difference. First operand has 241 places, 317 transitions, 4351 flow. Second operand 38 states and 824 transitions. [2024-11-20 22:06:03,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 619 transitions, 9514 flow [2024-11-20 22:06:04,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 619 transitions, 9132 flow, removed 119 selfloop flow, removed 19 redundant places. [2024-11-20 22:06:04,191 INFO L231 Difference]: Finished difference. Result has 271 places, 431 transitions, 7594 flow [2024-11-20 22:06:04,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3963, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7594, PETRI_PLACES=271, PETRI_TRANSITIONS=431} [2024-11-20 22:06:04,192 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 224 predicate places. [2024-11-20 22:06:04,192 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 431 transitions, 7594 flow [2024-11-20 22:06:04,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 16.431818181818183) internal successors, (723), 44 states have internal predecessors, (723), 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) [2024-11-20 22:06:04,192 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:06:04,193 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:06:04,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-20 22:06:04,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:06:04,393 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 22:06:04,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:06:04,394 INFO L85 PathProgramCache]: Analyzing trace with hash -386840604, now seen corresponding path program 4 times [2024-11-20 22:06:04,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:06:04,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127471339] [2024-11-20 22:06:04,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:06:04,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:06:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:06:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:06:04,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:06:04,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127471339] [2024-11-20 22:06:04,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127471339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:06:04,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154816458] [2024-11-20 22:06:04,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 22:06:04,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:06:04,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:06:04,931 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:06:04,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-20 22:06:05,005 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 22:06:05,005 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:06:05,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-20 22:06:05,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:06:05,164 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 22:06:05,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:06:05,214 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-20 22:06:05,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-20 22:06:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-20 22:06:05,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154816458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:06:05,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:06:05,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 4] total 25 [2024-11-20 22:06:05,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804845070] [2024-11-20 22:06:05,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:06:05,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-20 22:06:05,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:06:05,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-20 22:06:05,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2024-11-20 22:06:05,318 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-20 22:06:05,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 431 transitions, 7594 flow. Second operand has 27 states, 27 states have (on average 16.666666666666668) internal successors, (450), 27 states have internal predecessors, (450), 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) [2024-11-20 22:06:05,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:06:05,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-20 22:06:05,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand