./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/weaver/popl20-bad-counter-queue.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 387879bf92b16ead997b40b3e249348f8a6b399496756f9bc3c41b6dc3c21353 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:05:52,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:05:52,182 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:05:52,185 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:05:52,185 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:05:52,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:05:52,213 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:05:52,213 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:05:52,213 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:05:52,214 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:05:52,215 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:05:52,215 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:05:52,215 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:05:52,217 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:05:52,218 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:05:52,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:05:52,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:05:52,218 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:05:52,219 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:05:52,219 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:05:52,219 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:05:52,220 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:05:52,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:05:52,220 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:05:52,221 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:05:52,221 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:05:52,221 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:05:52,221 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:05:52,221 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:05:52,222 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:05:52,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:05:52,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:05:52,222 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:05:52,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:05:52,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:05:52,223 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:05:52,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:05:52,223 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:05:52,223 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:05:52,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:05:52,224 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:05:52,224 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:05:52,224 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:05:52,224 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:05:52,224 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 387879bf92b16ead997b40b3e249348f8a6b399496756f9bc3c41b6dc3c21353 [2024-11-19 14:05:52,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:05:52,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:05:52,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:05:52,445 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:05:52,446 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:05:52,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-11-19 14:05:53,667 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:05:53,817 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:05:53,817 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-11-19 14:05:53,826 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bc92c9ea/dafe614dc5844a89a5a66ea9ac932415/FLAG6db5c07ad [2024-11-19 14:05:54,234 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bc92c9ea/dafe614dc5844a89a5a66ea9ac932415 [2024-11-19 14:05:54,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:05:54,237 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:05:54,238 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:05:54,238 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:05:54,242 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:05:54,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:05:54" (1/1) ... [2024-11-19 14:05:54,243 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6621e60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:54, skipping insertion in model container [2024-11-19 14:05:54,243 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:05:54" (1/1) ... [2024-11-19 14:05:54,258 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:05:54,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:05:54,435 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:05:54,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:05:54,471 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:05:54,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:54 WrapperNode [2024-11-19 14:05:54,471 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:05:54,472 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:05:54,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:05:54,473 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:05:54,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:54" (1/1) ... [2024-11-19 14:05:54,483 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:54" (1/1) ... [2024-11-19 14:05:54,504 INFO L138 Inliner]: procedures = 23, calls = 23, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 170 [2024-11-19 14:05:54,507 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:05:54,507 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:05:54,507 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:05:54,508 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:05:54,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:54" (1/1) ... [2024-11-19 14:05:54,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:54" (1/1) ... [2024-11-19 14:05:54,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:54" (1/1) ... [2024-11-19 14:05:54,533 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 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]. [2024-11-19 14:05:54,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:54" (1/1) ... [2024-11-19 14:05:54,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:54" (1/1) ... [2024-11-19 14:05:54,539 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:54" (1/1) ... [2024-11-19 14:05:54,546 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:54" (1/1) ... [2024-11-19 14:05:54,547 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:54" (1/1) ... [2024-11-19 14:05:54,552 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:54" (1/1) ... [2024-11-19 14:05:54,555 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:05:54,558 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:05:54,558 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:05:54,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:05:54,559 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:54" (1/1) ... [2024-11-19 14:05:54,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:05:54,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:05:54,585 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) [2024-11-19 14:05:54,587 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 [2024-11-19 14:05:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:05:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:05:54,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:05:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:05:54,623 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:05:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:05:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:05:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:05:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:05:54,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:05:54,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:05:54,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:05:54,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:05:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:05:54,626 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:05:54,705 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:05:54,707 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:05:54,962 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:05:54,963 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:05:55,104 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:05:55,105 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 14:05:55,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:05:55 BoogieIcfgContainer [2024-11-19 14:05:55,105 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:05:55,106 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:05:55,106 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:05:55,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:05:55,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:05:54" (1/3) ... [2024-11-19 14:05:55,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473f03d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:05:55, skipping insertion in model container [2024-11-19 14:05:55,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:05:54" (2/3) ... [2024-11-19 14:05:55,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473f03d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:05:55, skipping insertion in model container [2024-11-19 14:05:55,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:05:55" (3/3) ... [2024-11-19 14:05:55,113 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2024-11-19 14:05:55,125 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:05:55,125 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-19 14:05:55,125 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:05:55,184 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 14:05:55,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 154 flow [2024-11-19 14:05:55,242 INFO L124 PetriNetUnfolderBase]: 7/68 cut-off events. [2024-11-19 14:05:55,243 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 14:05:55,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 68 events. 7/68 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 194 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2024-11-19 14:05:55,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 70 transitions, 154 flow [2024-11-19 14:05:55,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 66 transitions, 141 flow [2024-11-19 14:05:55,256 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:05:55,261 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;@13bfcabb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:05:55,261 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-19 14:05:55,266 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:05:55,266 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:05:55,266 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:05:55,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:55,267 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:05:55,268 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:05:55,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:55,271 INFO L85 PathProgramCache]: Analyzing trace with hash 523687, now seen corresponding path program 1 times [2024-11-19 14:05:55,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:55,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288980594] [2024-11-19 14:05:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:55,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:55,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:55,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:55,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288980594] [2024-11-19 14:05:55,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288980594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:05:55,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:05:55,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:05:55,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669305121] [2024-11-19 14:05:55,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:05:55,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:05:55,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:55,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:05:55,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:05:55,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-19 14:05:55,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:55,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:55,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-19 14:05:55,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:05:55,789 INFO L124 PetriNetUnfolderBase]: 341/925 cut-off events. [2024-11-19 14:05:55,789 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-19 14:05:55,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 925 events. 341/925 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6071 event pairs, 222 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 1411. Up to 531 conditions per place. [2024-11-19 14:05:55,798 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 30 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2024-11-19 14:05:55,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 215 flow [2024-11-19 14:05:55,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:05:55,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:05:55,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 184 transitions. [2024-11-19 14:05:55,809 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-11-19 14:05:55,810 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 141 flow. Second operand 4 states and 184 transitions. [2024-11-19 14:05:55,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 215 flow [2024-11-19 14:05:55,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 210 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:05:55,815 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 165 flow [2024-11-19 14:05:55,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2024-11-19 14:05:55,821 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-11-19 14:05:55,821 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 165 flow [2024-11-19 14:05:55,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:55,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:55,823 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:05:55,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:05:55,824 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:05:55,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:55,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1578177431, now seen corresponding path program 1 times [2024-11-19 14:05:55,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:55,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129342859] [2024-11-19 14:05:55,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:55,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:55,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:55,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:55,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129342859] [2024-11-19 14:05:55,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129342859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:05:55,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813208002] [2024-11-19 14:05:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:55,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:05:55,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:05:55,957 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) [2024-11-19 14:05:55,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:05:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:56,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:05:56,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:05:56,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:56,072 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:05:56,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813208002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:05:56,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:05:56,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:05:56,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691851643] [2024-11-19 14:05:56,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:05:56,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:05:56,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:56,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:05:56,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:05:56,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-19 14:05:56,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 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) [2024-11-19 14:05:56,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:56,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-19 14:05:56,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:05:56,270 INFO L124 PetriNetUnfolderBase]: 341/924 cut-off events. [2024-11-19 14:05:56,271 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-19 14:05:56,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 924 events. 341/924 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6021 event pairs, 222 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 1461. Up to 526 conditions per place. [2024-11-19 14:05:56,276 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 26 selfloop transitions, 7 changer transitions 0/68 dead transitions. [2024-11-19 14:05:56,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 227 flow [2024-11-19 14:05:56,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:05:56,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:05:56,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2024-11-19 14:05:56,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-11-19 14:05:56,278 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 165 flow. Second operand 6 states and 256 transitions. [2024-11-19 14:05:56,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 227 flow [2024-11-19 14:05:56,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:05:56,280 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 172 flow [2024-11-19 14:05:56,280 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2024-11-19 14:05:56,281 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2024-11-19 14:05:56,281 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 172 flow [2024-11-19 14:05:56,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 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) [2024-11-19 14:05:56,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:56,282 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:05:56,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:05:56,486 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 [2024-11-19 14:05:56,487 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:05:56,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:56,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1678859568, now seen corresponding path program 1 times [2024-11-19 14:05:56,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:56,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473458820] [2024-11-19 14:05:56,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:56,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:56,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:56,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473458820] [2024-11-19 14:05:56,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473458820] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:05:56,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525708896] [2024-11-19 14:05:56,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:56,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:05:56,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:05:56,565 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) [2024-11-19 14:05:56,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:05:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:56,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:05:56,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:05:56,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:56,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:05:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:56,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525708896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:05:56,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:05:56,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:05:56,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215672233] [2024-11-19 14:05:56,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:05:56,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:05:56,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:56,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:05:56,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:05:56,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-19 14:05:56,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 172 flow. Second operand has 12 states, 12 states have (on average 38.083333333333336) internal successors, (457), 12 states have internal predecessors, (457), 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) [2024-11-19 14:05:56,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:56,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-19 14:05:56,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:05:56,871 INFO L124 PetriNetUnfolderBase]: 344/936 cut-off events. [2024-11-19 14:05:56,871 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-19 14:05:56,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 936 events. 344/936 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6164 event pairs, 222 based on Foata normal form. 3/732 useless extension candidates. Maximal degree in co-relation 1462. Up to 533 conditions per place. [2024-11-19 14:05:56,875 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 29 selfloop transitions, 13 changer transitions 0/77 dead transitions. [2024-11-19 14:05:56,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 77 transitions, 310 flow [2024-11-19 14:05:56,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:05:56,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:05:56,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 415 transitions. [2024-11-19 14:05:56,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2024-11-19 14:05:56,878 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 172 flow. Second operand 10 states and 415 transitions. [2024-11-19 14:05:56,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 77 transitions, 310 flow [2024-11-19 14:05:56,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 264 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-19 14:05:56,880 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 224 flow [2024-11-19 14:05:56,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=224, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2024-11-19 14:05:56,881 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-11-19 14:05:56,881 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 224 flow [2024-11-19 14:05:56,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 38.083333333333336) internal successors, (457), 12 states have internal predecessors, (457), 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) [2024-11-19 14:05:56,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:56,881 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:05:56,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:05:57,085 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 [2024-11-19 14:05:57,086 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:05:57,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:57,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1593866490, now seen corresponding path program 1 times [2024-11-19 14:05:57,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:57,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042788402] [2024-11-19 14:05:57,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:57,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:57,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:57,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:57,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042788402] [2024-11-19 14:05:57,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042788402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:05:57,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:05:57,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:05:57,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220255871] [2024-11-19 14:05:57,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:05:57,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:05:57,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:57,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:05:57,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:05:57,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-19 14:05:57,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-11-19 14:05:57,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:57,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-19 14:05:57,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:05:57,314 INFO L124 PetriNetUnfolderBase]: 628/1452 cut-off events. [2024-11-19 14:05:57,314 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-19 14:05:57,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 1452 events. 628/1452 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9856 event pairs, 222 based on Foata normal form. 44/1202 useless extension candidates. Maximal degree in co-relation 2475. Up to 507 conditions per place. [2024-11-19 14:05:57,320 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 71 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2024-11-19 14:05:57,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 106 transitions, 438 flow [2024-11-19 14:05:57,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:05:57,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:05:57,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-11-19 14:05:57,321 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7107142857142857 [2024-11-19 14:05:57,321 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 224 flow. Second operand 4 states and 199 transitions. [2024-11-19 14:05:57,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 106 transitions, 438 flow [2024-11-19 14:05:57,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 106 transitions, 427 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 14:05:57,324 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 247 flow [2024-11-19 14:05:57,324 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2024-11-19 14:05:57,324 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2024-11-19 14:05:57,325 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 247 flow [2024-11-19 14:05:57,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-11-19 14:05:57,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:57,325 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:05:57,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:05:57,325 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:05:57,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:57,326 INFO L85 PathProgramCache]: Analyzing trace with hash 2129746940, now seen corresponding path program 1 times [2024-11-19 14:05:57,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:57,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250519309] [2024-11-19 14:05:57,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:57,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:57,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:57,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250519309] [2024-11-19 14:05:57,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250519309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:05:57,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:05:57,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:05:57,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989886820] [2024-11-19 14:05:57,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:05:57,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:05:57,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:57,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:05:57,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:05:57,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 70 [2024-11-19 14:05:57,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2024-11-19 14:05:57,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:57,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 70 [2024-11-19 14:05:57,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:05:57,553 INFO L124 PetriNetUnfolderBase]: 511/1407 cut-off events. [2024-11-19 14:05:57,553 INFO L125 PetriNetUnfolderBase]: For 290/313 co-relation queries the response was YES. [2024-11-19 14:05:57,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2497 conditions, 1407 events. 511/1407 cut-off events. For 290/313 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 10159 event pairs, 320 based on Foata normal form. 35/1179 useless extension candidates. Maximal degree in co-relation 2461. Up to 660 conditions per place. [2024-11-19 14:05:57,562 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 66 selfloop transitions, 5 changer transitions 2/109 dead transitions. [2024-11-19 14:05:57,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 109 transitions, 459 flow [2024-11-19 14:05:57,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:05:57,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:05:57,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 258 transitions. [2024-11-19 14:05:57,563 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7371428571428571 [2024-11-19 14:05:57,563 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 247 flow. Second operand 5 states and 258 transitions. [2024-11-19 14:05:57,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 109 transitions, 459 flow [2024-11-19 14:05:57,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 109 transitions, 459 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:05:57,568 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 272 flow [2024-11-19 14:05:57,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-11-19 14:05:57,570 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 21 predicate places. [2024-11-19 14:05:57,570 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 272 flow [2024-11-19 14:05:57,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2024-11-19 14:05:57,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:57,570 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:05:57,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:05:57,570 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:05:57,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:57,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1363777961, now seen corresponding path program 1 times [2024-11-19 14:05:57,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:57,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760732847] [2024-11-19 14:05:57,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:57,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:57,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:57,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760732847] [2024-11-19 14:05:57,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760732847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:05:57,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:05:57,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:05:57,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493159590] [2024-11-19 14:05:57,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:05:57,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:05:57,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:57,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:05:57,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:05:57,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-19 14:05:57,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:57,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:57,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-19 14:05:57,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:05:57,838 INFO L124 PetriNetUnfolderBase]: 939/2223 cut-off events. [2024-11-19 14:05:57,838 INFO L125 PetriNetUnfolderBase]: For 815/843 co-relation queries the response was YES. [2024-11-19 14:05:57,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4442 conditions, 2223 events. 939/2223 cut-off events. For 815/843 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 16393 event pairs, 343 based on Foata normal form. 80/1959 useless extension candidates. Maximal degree in co-relation 4403. Up to 804 conditions per place. [2024-11-19 14:05:57,849 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 81 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2024-11-19 14:05:57,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 116 transitions, 580 flow [2024-11-19 14:05:57,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:05:57,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:05:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2024-11-19 14:05:57,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7035714285714286 [2024-11-19 14:05:57,851 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 272 flow. Second operand 4 states and 197 transitions. [2024-11-19 14:05:57,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 116 transitions, 580 flow [2024-11-19 14:05:57,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 116 transitions, 575 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:05:57,857 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 301 flow [2024-11-19 14:05:57,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-11-19 14:05:57,857 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2024-11-19 14:05:57,857 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 301 flow [2024-11-19 14:05:57,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:57,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:57,858 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:05:57,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:05:57,858 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:05:57,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:57,858 INFO L85 PathProgramCache]: Analyzing trace with hash -672555564, now seen corresponding path program 1 times [2024-11-19 14:05:57,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:57,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146618836] [2024-11-19 14:05:57,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:57,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:57,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:57,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:57,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146618836] [2024-11-19 14:05:57,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146618836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:05:57,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:05:57,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:05:57,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761992660] [2024-11-19 14:05:57,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:05:57,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:05:57,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:57,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:05:57,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:05:57,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 70 [2024-11-19 14:05:57,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 301 flow. Second operand has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 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) [2024-11-19 14:05:57,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:57,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 70 [2024-11-19 14:05:57,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:05:58,073 INFO L124 PetriNetUnfolderBase]: 581/1587 cut-off events. [2024-11-19 14:05:58,073 INFO L125 PetriNetUnfolderBase]: For 748/790 co-relation queries the response was YES. [2024-11-19 14:05:58,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3268 conditions, 1587 events. 581/1587 cut-off events. For 748/790 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11857 event pairs, 397 based on Foata normal form. 31/1420 useless extension candidates. Maximal degree in co-relation 3227. Up to 847 conditions per place. [2024-11-19 14:05:58,079 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 42 selfloop transitions, 2 changer transitions 14/94 dead transitions. [2024-11-19 14:05:58,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 452 flow [2024-11-19 14:05:58,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:05:58,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:05:58,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 241 transitions. [2024-11-19 14:05:58,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6885714285714286 [2024-11-19 14:05:58,080 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 301 flow. Second operand 5 states and 241 transitions. [2024-11-19 14:05:58,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 452 flow [2024-11-19 14:05:58,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:05:58,083 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 294 flow [2024-11-19 14:05:58,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-11-19 14:05:58,083 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 30 predicate places. [2024-11-19 14:05:58,083 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 294 flow [2024-11-19 14:05:58,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 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) [2024-11-19 14:05:58,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:58,084 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:05:58,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:05:58,084 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:05:58,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:58,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1992599942, now seen corresponding path program 1 times [2024-11-19 14:05:58,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:58,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897022540] [2024-11-19 14:05:58,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:58,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:58,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:58,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:58,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897022540] [2024-11-19 14:05:58,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897022540] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:05:58,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218534140] [2024-11-19 14:05:58,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:58,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:05:58,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:05:58,268 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) [2024-11-19 14:05:58,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:05:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:58,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 14:05:58,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:05:58,355 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 [2024-11-19 14:05:58,402 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 17 treesize of output 9 [2024-11-19 14:05:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:58,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:05:58,468 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 16 treesize of output 14 [2024-11-19 14:05:58,472 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 22 treesize of output 20 [2024-11-19 14:05:58,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:58,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218534140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:05:58,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:05:58,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:05:58,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974122955] [2024-11-19 14:05:58,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:05:58,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 14:05:58,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:58,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 14:05:58,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-19 14:05:58,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2024-11-19 14:05:58,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 37.38461538461539) internal successors, (486), 13 states have internal predecessors, (486), 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) [2024-11-19 14:05:58,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:58,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2024-11-19 14:05:58,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:05:59,049 INFO L124 PetriNetUnfolderBase]: 1225/3179 cut-off events. [2024-11-19 14:05:59,050 INFO L125 PetriNetUnfolderBase]: For 1688/1779 co-relation queries the response was YES. [2024-11-19 14:05:59,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6710 conditions, 3179 events. 1225/3179 cut-off events. For 1688/1779 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 24936 event pairs, 338 based on Foata normal form. 53/2869 useless extension candidates. Maximal degree in co-relation 6680. Up to 707 conditions per place. [2024-11-19 14:05:59,069 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 103 selfloop transitions, 18 changer transitions 0/155 dead transitions. [2024-11-19 14:05:59,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 155 transitions, 816 flow [2024-11-19 14:05:59,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:05:59,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:05:59,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 461 transitions. [2024-11-19 14:05:59,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6585714285714286 [2024-11-19 14:05:59,072 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 294 flow. Second operand 10 states and 461 transitions. [2024-11-19 14:05:59,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 155 transitions, 816 flow [2024-11-19 14:05:59,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 155 transitions, 772 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-11-19 14:05:59,081 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 385 flow [2024-11-19 14:05:59,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=385, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2024-11-19 14:05:59,082 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 32 predicate places. [2024-11-19 14:05:59,082 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 385 flow [2024-11-19 14:05:59,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.38461538461539) internal successors, (486), 13 states have internal predecessors, (486), 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) [2024-11-19 14:05:59,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:59,082 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:05:59,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:05:59,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:05:59,283 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:05:59,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:59,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1641087252, now seen corresponding path program 1 times [2024-11-19 14:05:59,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:59,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404867787] [2024-11-19 14:05:59,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:59,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:59,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:59,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404867787] [2024-11-19 14:05:59,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404867787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:05:59,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565452646] [2024-11-19 14:05:59,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:59,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:05:59,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:05:59,447 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) [2024-11-19 14:05:59,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:05:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:59,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 14:05:59,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:05:59,514 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 [2024-11-19 14:05:59,544 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 15 treesize of output 7 [2024-11-19 14:05:59,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:59,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:05:59,595 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 14 treesize of output 12 [2024-11-19 14:05:59,598 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 18 treesize of output 16 [2024-11-19 14:05:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:59,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565452646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:05:59,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:05:59,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:05:59,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023848595] [2024-11-19 14:05:59,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:05:59,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 14:05:59,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:59,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 14:05:59,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-19 14:05:59,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-11-19 14:05:59,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 385 flow. Second operand has 13 states, 13 states have (on average 35.53846153846154) internal successors, (462), 13 states have internal predecessors, (462), 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) [2024-11-19 14:05:59,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:59,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-11-19 14:05:59,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:00,084 INFO L124 PetriNetUnfolderBase]: 1485/3465 cut-off events. [2024-11-19 14:06:00,084 INFO L125 PetriNetUnfolderBase]: For 2645/2760 co-relation queries the response was YES. [2024-11-19 14:06:00,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7973 conditions, 3465 events. 1485/3465 cut-off events. For 2645/2760 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 25963 event pairs, 456 based on Foata normal form. 91/3212 useless extension candidates. Maximal degree in co-relation 7934. Up to 911 conditions per place. [2024-11-19 14:06:00,103 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 107 selfloop transitions, 18 changer transitions 0/156 dead transitions. [2024-11-19 14:06:00,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 156 transitions, 857 flow [2024-11-19 14:06:00,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:06:00,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:06:00,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 441 transitions. [2024-11-19 14:06:00,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-11-19 14:06:00,105 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 385 flow. Second operand 10 states and 441 transitions. [2024-11-19 14:06:00,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 156 transitions, 857 flow [2024-11-19 14:06:00,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 156 transitions, 845 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-19 14:06:00,111 INFO L231 Difference]: Finished difference. Result has 105 places, 91 transitions, 435 flow [2024-11-19 14:06:00,111 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=435, PETRI_PLACES=105, PETRI_TRANSITIONS=91} [2024-11-19 14:06:00,112 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 39 predicate places. [2024-11-19 14:06:00,112 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 91 transitions, 435 flow [2024-11-19 14:06:00,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.53846153846154) internal successors, (462), 13 states have internal predecessors, (462), 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) [2024-11-19 14:06:00,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:00,113 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:00,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 14:06:00,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:00,318 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:00,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:00,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2006905042, now seen corresponding path program 1 times [2024-11-19 14:06:00,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:00,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71252407] [2024-11-19 14:06:00,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:00,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:00,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:00,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:00,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71252407] [2024-11-19 14:06:00,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71252407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:00,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120313156] [2024-11-19 14:06:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:00,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:00,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:00,471 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) [2024-11-19 14:06:00,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:06:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:00,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 14:06:00,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:00,538 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 [2024-11-19 14:06:00,577 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 15 treesize of output 7 [2024-11-19 14:06:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:00,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:00,630 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 14 treesize of output 12 [2024-11-19 14:06:00,633 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 18 treesize of output 16 [2024-11-19 14:06:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:00,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120313156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:00,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:00,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:06:00,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263738458] [2024-11-19 14:06:00,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:00,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 14:06:00,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:00,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 14:06:00,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-19 14:06:00,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2024-11-19 14:06:00,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 91 transitions, 435 flow. Second operand has 13 states, 13 states have (on average 37.69230769230769) internal successors, (490), 13 states have internal predecessors, (490), 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) [2024-11-19 14:06:00,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:00,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2024-11-19 14:06:00,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:01,302 INFO L124 PetriNetUnfolderBase]: 2343/5934 cut-off events. [2024-11-19 14:06:01,303 INFO L125 PetriNetUnfolderBase]: For 7088/7292 co-relation queries the response was YES. [2024-11-19 14:06:01,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13858 conditions, 5934 events. 2343/5934 cut-off events. For 7088/7292 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 50082 event pairs, 611 based on Foata normal form. 128/5414 useless extension candidates. Maximal degree in co-relation 13817. Up to 1385 conditions per place. [2024-11-19 14:06:01,334 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 139 selfloop transitions, 18 changer transitions 0/194 dead transitions. [2024-11-19 14:06:01,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 194 transitions, 1369 flow [2024-11-19 14:06:01,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:06:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:06:01,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 457 transitions. [2024-11-19 14:06:01,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6528571428571428 [2024-11-19 14:06:01,335 INFO L175 Difference]: Start difference. First operand has 105 places, 91 transitions, 435 flow. Second operand 10 states and 457 transitions. [2024-11-19 14:06:01,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 194 transitions, 1369 flow [2024-11-19 14:06:01,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 194 transitions, 1297 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-19 14:06:01,344 INFO L231 Difference]: Finished difference. Result has 110 places, 100 transitions, 518 flow [2024-11-19 14:06:01,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=518, PETRI_PLACES=110, PETRI_TRANSITIONS=100} [2024-11-19 14:06:01,346 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 44 predicate places. [2024-11-19 14:06:01,346 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 100 transitions, 518 flow [2024-11-19 14:06:01,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.69230769230769) internal successors, (490), 13 states have internal predecessors, (490), 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) [2024-11-19 14:06:01,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:01,347 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:01,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 14:06:01,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 14:06:01,551 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:01,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:01,551 INFO L85 PathProgramCache]: Analyzing trace with hash 665903325, now seen corresponding path program 1 times [2024-11-19 14:06:01,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:01,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025651550] [2024-11-19 14:06:01,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:01,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:01,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:01,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025651550] [2024-11-19 14:06:01,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025651550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:01,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:01,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:01,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800784036] [2024-11-19 14:06:01,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:01,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:01,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:01,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:01,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:01,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-19 14:06:01,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 100 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:01,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:01,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-19 14:06:01,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:02,167 INFO L124 PetriNetUnfolderBase]: 2693/6580 cut-off events. [2024-11-19 14:06:02,168 INFO L125 PetriNetUnfolderBase]: For 9501/9736 co-relation queries the response was YES. [2024-11-19 14:06:02,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16882 conditions, 6580 events. 2693/6580 cut-off events. For 9501/9736 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 55518 event pairs, 1059 based on Foata normal form. 203/6092 useless extension candidates. Maximal degree in co-relation 16839. Up to 2290 conditions per place. [2024-11-19 14:06:02,197 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 105 selfloop transitions, 8 changer transitions 0/145 dead transitions. [2024-11-19 14:06:02,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 145 transitions, 985 flow [2024-11-19 14:06:02,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:02,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:02,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2024-11-19 14:06:02,198 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-19 14:06:02,198 INFO L175 Difference]: Start difference. First operand has 110 places, 100 transitions, 518 flow. Second operand 4 states and 196 transitions. [2024-11-19 14:06:02,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 145 transitions, 985 flow [2024-11-19 14:06:02,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 145 transitions, 964 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-19 14:06:02,208 INFO L231 Difference]: Finished difference. Result has 108 places, 98 transitions, 500 flow [2024-11-19 14:06:02,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=500, PETRI_PLACES=108, PETRI_TRANSITIONS=98} [2024-11-19 14:06:02,208 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 42 predicate places. [2024-11-19 14:06:02,209 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 98 transitions, 500 flow [2024-11-19 14:06:02,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:02,209 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:02,209 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:02,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 14:06:02,209 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:02,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:02,209 INFO L85 PathProgramCache]: Analyzing trace with hash 665902300, now seen corresponding path program 1 times [2024-11-19 14:06:02,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:02,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231155929] [2024-11-19 14:06:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:02,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:02,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:02,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:02,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231155929] [2024-11-19 14:06:02,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231155929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:02,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:02,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:02,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23209531] [2024-11-19 14:06:02,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:02,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:06:02,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:02,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:06:02,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:06:02,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-19 14:06:02,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 98 transitions, 500 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:02,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:02,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-19 14:06:02,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:02,967 INFO L124 PetriNetUnfolderBase]: 3978/9268 cut-off events. [2024-11-19 14:06:02,967 INFO L125 PetriNetUnfolderBase]: For 11970/12331 co-relation queries the response was YES. [2024-11-19 14:06:02,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23348 conditions, 9268 events. 3978/9268 cut-off events. For 11970/12331 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 80339 event pairs, 938 based on Foata normal form. 172/8679 useless extension candidates. Maximal degree in co-relation 23309. Up to 3970 conditions per place. [2024-11-19 14:06:03,009 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 165 selfloop transitions, 16 changer transitions 0/213 dead transitions. [2024-11-19 14:06:03,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 213 transitions, 1457 flow [2024-11-19 14:06:03,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 14:06:03,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 14:06:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 357 transitions. [2024-11-19 14:06:03,011 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7285714285714285 [2024-11-19 14:06:03,011 INFO L175 Difference]: Start difference. First operand has 108 places, 98 transitions, 500 flow. Second operand 7 states and 357 transitions. [2024-11-19 14:06:03,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 213 transitions, 1457 flow [2024-11-19 14:06:03,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 213 transitions, 1437 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:03,024 INFO L231 Difference]: Finished difference. Result has 117 places, 111 transitions, 623 flow [2024-11-19 14:06:03,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=623, PETRI_PLACES=117, PETRI_TRANSITIONS=111} [2024-11-19 14:06:03,024 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 51 predicate places. [2024-11-19 14:06:03,025 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 111 transitions, 623 flow [2024-11-19 14:06:03,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:03,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:03,025 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:03,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 14:06:03,025 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:03,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:03,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2084482991, now seen corresponding path program 1 times [2024-11-19 14:06:03,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:03,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199439633] [2024-11-19 14:06:03,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:03,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:03,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:03,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199439633] [2024-11-19 14:06:03,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199439633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:03,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523286797] [2024-11-19 14:06:03,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:03,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:03,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:03,223 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) [2024-11-19 14:06:03,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:06:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:03,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 14:06:03,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:03,293 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 [2024-11-19 14:06:03,337 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 17 treesize of output 9 [2024-11-19 14:06:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:03,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:03,405 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 16 treesize of output 14 [2024-11-19 14:06:03,409 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 22 treesize of output 20 [2024-11-19 14:06:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:03,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523286797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:03,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:03,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:06:03,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393212783] [2024-11-19 14:06:03,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:03,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 14:06:03,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:03,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 14:06:03,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-19 14:06:03,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-11-19 14:06:03,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 111 transitions, 623 flow. Second operand has 13 states, 13 states have (on average 35.84615384615385) internal successors, (466), 13 states have internal predecessors, (466), 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) [2024-11-19 14:06:03,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:03,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-11-19 14:06:03,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:04,357 INFO L124 PetriNetUnfolderBase]: 3317/7605 cut-off events. [2024-11-19 14:06:04,357 INFO L125 PetriNetUnfolderBase]: For 13522/13939 co-relation queries the response was YES. [2024-11-19 14:06:04,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20184 conditions, 7605 events. 3317/7605 cut-off events. For 13522/13939 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 63879 event pairs, 943 based on Foata normal form. 263/7156 useless extension candidates. Maximal degree in co-relation 20139. Up to 2214 conditions per place. [2024-11-19 14:06:04,394 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 153 selfloop transitions, 18 changer transitions 0/212 dead transitions. [2024-11-19 14:06:04,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 212 transitions, 1612 flow [2024-11-19 14:06:04,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:06:04,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:06:04,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 437 transitions. [2024-11-19 14:06:04,396 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6242857142857143 [2024-11-19 14:06:04,396 INFO L175 Difference]: Start difference. First operand has 117 places, 111 transitions, 623 flow. Second operand 10 states and 437 transitions. [2024-11-19 14:06:04,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 212 transitions, 1612 flow [2024-11-19 14:06:04,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 212 transitions, 1606 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-19 14:06:04,410 INFO L231 Difference]: Finished difference. Result has 128 places, 113 transitions, 683 flow [2024-11-19 14:06:04,410 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=683, PETRI_PLACES=128, PETRI_TRANSITIONS=113} [2024-11-19 14:06:04,411 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 62 predicate places. [2024-11-19 14:06:04,411 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 113 transitions, 683 flow [2024-11-19 14:06:04,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.84615384615385) internal successors, (466), 13 states have internal predecessors, (466), 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) [2024-11-19 14:06:04,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:04,411 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:04,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 14:06:04,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:04,616 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:04,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:04,616 INFO L85 PathProgramCache]: Analyzing trace with hash -831864593, now seen corresponding path program 1 times [2024-11-19 14:06:04,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:04,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061680673] [2024-11-19 14:06:04,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:04,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:04,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:04,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061680673] [2024-11-19 14:06:04,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061680673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:04,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:04,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:06:04,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673181820] [2024-11-19 14:06:04,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:04,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:06:04,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:04,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:06:04,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:06:04,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-19 14:06:04,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 113 transitions, 683 flow. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 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) [2024-11-19 14:06:04,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:04,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-19 14:06:04,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:05,726 INFO L124 PetriNetUnfolderBase]: 5162/11426 cut-off events. [2024-11-19 14:06:05,727 INFO L125 PetriNetUnfolderBase]: For 23545/23831 co-relation queries the response was YES. [2024-11-19 14:06:05,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33007 conditions, 11426 events. 5162/11426 cut-off events. For 23545/23831 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 100338 event pairs, 969 based on Foata normal form. 318/10743 useless extension candidates. Maximal degree in co-relation 32956. Up to 4317 conditions per place. [2024-11-19 14:06:05,788 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 225 selfloop transitions, 31 changer transitions 0/289 dead transitions. [2024-11-19 14:06:05,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 289 transitions, 2250 flow [2024-11-19 14:06:05,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 14:06:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 14:06:05,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 497 transitions. [2024-11-19 14:06:05,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-11-19 14:06:05,790 INFO L175 Difference]: Start difference. First operand has 128 places, 113 transitions, 683 flow. Second operand 11 states and 497 transitions. [2024-11-19 14:06:05,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 289 transitions, 2250 flow [2024-11-19 14:06:05,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 289 transitions, 2155 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-19 14:06:05,828 INFO L231 Difference]: Finished difference. Result has 134 places, 133 transitions, 881 flow [2024-11-19 14:06:05,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=881, PETRI_PLACES=134, PETRI_TRANSITIONS=133} [2024-11-19 14:06:05,828 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 68 predicate places. [2024-11-19 14:06:05,828 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 133 transitions, 881 flow [2024-11-19 14:06:05,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 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) [2024-11-19 14:06:05,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:05,829 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:05,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 14:06:05,829 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:05,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:05,829 INFO L85 PathProgramCache]: Analyzing trace with hash 194462868, now seen corresponding path program 1 times [2024-11-19 14:06:05,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:05,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969669971] [2024-11-19 14:06:05,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:05,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:05,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:05,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:05,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969669971] [2024-11-19 14:06:05,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969669971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:05,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:05,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:05,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161001065] [2024-11-19 14:06:05,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:05,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:06:05,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:05,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:06:05,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:06:05,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-19 14:06:05,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 133 transitions, 881 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 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) [2024-11-19 14:06:05,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:05,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-19 14:06:05,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:07,039 INFO L124 PetriNetUnfolderBase]: 4916/11170 cut-off events. [2024-11-19 14:06:07,039 INFO L125 PetriNetUnfolderBase]: For 27341/27768 co-relation queries the response was YES. [2024-11-19 14:06:07,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33121 conditions, 11170 events. 4916/11170 cut-off events. For 27341/27768 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 100020 event pairs, 1188 based on Foata normal form. 237/10768 useless extension candidates. Maximal degree in co-relation 33070. Up to 5238 conditions per place. [2024-11-19 14:06:07,216 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 182 selfloop transitions, 23 changer transitions 0/249 dead transitions. [2024-11-19 14:06:07,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 249 transitions, 2092 flow [2024-11-19 14:06:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 14:06:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 14:06:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 353 transitions. [2024-11-19 14:06:07,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7204081632653061 [2024-11-19 14:06:07,218 INFO L175 Difference]: Start difference. First operand has 134 places, 133 transitions, 881 flow. Second operand 7 states and 353 transitions. [2024-11-19 14:06:07,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 249 transitions, 2092 flow [2024-11-19 14:06:07,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 249 transitions, 2076 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-11-19 14:06:07,261 INFO L231 Difference]: Finished difference. Result has 144 places, 144 transitions, 1031 flow [2024-11-19 14:06:07,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1031, PETRI_PLACES=144, PETRI_TRANSITIONS=144} [2024-11-19 14:06:07,261 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 78 predicate places. [2024-11-19 14:06:07,261 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 144 transitions, 1031 flow [2024-11-19 14:06:07,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 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) [2024-11-19 14:06:07,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:07,261 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:07,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 14:06:07,262 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:07,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:07,262 INFO L85 PathProgramCache]: Analyzing trace with hash 194463893, now seen corresponding path program 1 times [2024-11-19 14:06:07,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:07,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229711421] [2024-11-19 14:06:07,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:07,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:07,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:07,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:07,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229711421] [2024-11-19 14:06:07,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229711421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:07,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:07,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:07,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025799499] [2024-11-19 14:06:07,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:07,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:07,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:07,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:07,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:07,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-19 14:06:07,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 144 transitions, 1031 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2024-11-19 14:06:07,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:07,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-19 14:06:07,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:08,098 INFO L124 PetriNetUnfolderBase]: 3945/9749 cut-off events. [2024-11-19 14:06:08,098 INFO L125 PetriNetUnfolderBase]: For 26816/27151 co-relation queries the response was YES. [2024-11-19 14:06:08,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30372 conditions, 9749 events. 3945/9749 cut-off events. For 26816/27151 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 90358 event pairs, 1455 based on Foata normal form. 305/9456 useless extension candidates. Maximal degree in co-relation 30315. Up to 3269 conditions per place. [2024-11-19 14:06:08,333 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 146 selfloop transitions, 14 changer transitions 0/215 dead transitions. [2024-11-19 14:06:08,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 215 transitions, 1918 flow [2024-11-19 14:06:08,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:08,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:08,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2024-11-19 14:06:08,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6928571428571428 [2024-11-19 14:06:08,334 INFO L175 Difference]: Start difference. First operand has 144 places, 144 transitions, 1031 flow. Second operand 4 states and 194 transitions. [2024-11-19 14:06:08,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 215 transitions, 1918 flow [2024-11-19 14:06:08,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 215 transitions, 1910 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:08,390 INFO L231 Difference]: Finished difference. Result has 146 places, 142 transitions, 1034 flow [2024-11-19 14:06:08,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1034, PETRI_PLACES=146, PETRI_TRANSITIONS=142} [2024-11-19 14:06:08,390 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 80 predicate places. [2024-11-19 14:06:08,391 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 142 transitions, 1034 flow [2024-11-19 14:06:08,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2024-11-19 14:06:08,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:08,391 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:08,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 14:06:08,391 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:08,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:08,391 INFO L85 PathProgramCache]: Analyzing trace with hash 929319074, now seen corresponding path program 1 times [2024-11-19 14:06:08,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:08,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103827534] [2024-11-19 14:06:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:08,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:08,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:08,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103827534] [2024-11-19 14:06:08,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103827534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:08,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:08,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 14:06:08,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482568885] [2024-11-19 14:06:08,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:08,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:06:08,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:08,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:06:08,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:06:08,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 70 [2024-11-19 14:06:08,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 142 transitions, 1034 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-11-19 14:06:08,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:08,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 70 [2024-11-19 14:06:08,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:09,286 INFO L124 PetriNetUnfolderBase]: 4428/9840 cut-off events. [2024-11-19 14:06:09,286 INFO L125 PetriNetUnfolderBase]: For 29028/29434 co-relation queries the response was YES. [2024-11-19 14:06:09,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31693 conditions, 9840 events. 4428/9840 cut-off events. For 29028/29434 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 85023 event pairs, 1616 based on Foata normal form. 238/9612 useless extension candidates. Maximal degree in co-relation 31636. Up to 3747 conditions per place. [2024-11-19 14:06:09,330 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 183 selfloop transitions, 20 changer transitions 0/251 dead transitions. [2024-11-19 14:06:09,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 251 transitions, 2221 flow [2024-11-19 14:06:09,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:06:09,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:06:09,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 279 transitions. [2024-11-19 14:06:09,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-11-19 14:06:09,331 INFO L175 Difference]: Start difference. First operand has 146 places, 142 transitions, 1034 flow. Second operand 6 states and 279 transitions. [2024-11-19 14:06:09,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 251 transitions, 2221 flow [2024-11-19 14:06:09,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 251 transitions, 2111 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-19 14:06:09,396 INFO L231 Difference]: Finished difference. Result has 148 places, 143 transitions, 1051 flow [2024-11-19 14:06:09,396 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1051, PETRI_PLACES=148, PETRI_TRANSITIONS=143} [2024-11-19 14:06:09,396 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 82 predicate places. [2024-11-19 14:06:09,396 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 143 transitions, 1051 flow [2024-11-19 14:06:09,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-11-19 14:06:09,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:09,396 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:09,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 14:06:09,397 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:09,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:09,397 INFO L85 PathProgramCache]: Analyzing trace with hash 929318049, now seen corresponding path program 1 times [2024-11-19 14:06:09,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:09,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479095981] [2024-11-19 14:06:09,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:09,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:09,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:09,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479095981] [2024-11-19 14:06:09,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479095981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:09,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:09,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:09,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738910905] [2024-11-19 14:06:09,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:09,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:09,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:09,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:09,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:09,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-11-19 14:06:09,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 143 transitions, 1051 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:09,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:09,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-11-19 14:06:09,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:10,338 INFO L124 PetriNetUnfolderBase]: 4804/10528 cut-off events. [2024-11-19 14:06:10,339 INFO L125 PetriNetUnfolderBase]: For 30754/31172 co-relation queries the response was YES. [2024-11-19 14:06:10,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34099 conditions, 10528 events. 4804/10528 cut-off events. For 30754/31172 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 90931 event pairs, 1853 based on Foata normal form. 380/10478 useless extension candidates. Maximal degree in co-relation 34042. Up to 4270 conditions per place. [2024-11-19 14:06:10,399 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 127 selfloop transitions, 17 changer transitions 0/197 dead transitions. [2024-11-19 14:06:10,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 197 transitions, 1695 flow [2024-11-19 14:06:10,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:10,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-11-19 14:06:10,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-11-19 14:06:10,400 INFO L175 Difference]: Start difference. First operand has 148 places, 143 transitions, 1051 flow. Second operand 4 states and 200 transitions. [2024-11-19 14:06:10,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 197 transitions, 1695 flow [2024-11-19 14:06:10,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 197 transitions, 1649 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-19 14:06:10,488 INFO L231 Difference]: Finished difference. Result has 149 places, 143 transitions, 1066 flow [2024-11-19 14:06:10,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1066, PETRI_PLACES=149, PETRI_TRANSITIONS=143} [2024-11-19 14:06:10,488 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 83 predicate places. [2024-11-19 14:06:10,488 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 143 transitions, 1066 flow [2024-11-19 14:06:10,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:10,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:10,489 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-19 14:06:10,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 14:06:10,489 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:10,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:10,489 INFO L85 PathProgramCache]: Analyzing trace with hash 217487314, now seen corresponding path program 2 times [2024-11-19 14:06:10,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:10,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207467659] [2024-11-19 14:06:10,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:10,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:10,500 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:06:10,500 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:06:10,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:10,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207467659] [2024-11-19 14:06:10,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207467659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:10,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776851901] [2024-11-19 14:06:10,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:10,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:10,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:10,524 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) [2024-11-19 14:06:10,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 14:06:10,573 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:06:10,573 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:10,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:06:10,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:06:10,598 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:06:10,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776851901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:10,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:10,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-19 14:06:10,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289751771] [2024-11-19 14:06:10,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:10,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:10,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:10,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:10,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:10,623 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-19 14:06:10,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 143 transitions, 1066 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-11-19 14:06:10,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:10,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-19 14:06:10,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:11,500 INFO L124 PetriNetUnfolderBase]: 3060/8202 cut-off events. [2024-11-19 14:06:11,501 INFO L125 PetriNetUnfolderBase]: For 25874/26199 co-relation queries the response was YES. [2024-11-19 14:06:11,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26431 conditions, 8202 events. 3060/8202 cut-off events. For 25874/26199 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 77358 event pairs, 1992 based on Foata normal form. 191/7915 useless extension candidates. Maximal degree in co-relation 26379. Up to 4734 conditions per place. [2024-11-19 14:06:11,647 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 65 selfloop transitions, 15 changer transitions 0/142 dead transitions. [2024-11-19 14:06:11,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 142 transitions, 1216 flow [2024-11-19 14:06:11,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:11,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 178 transitions. [2024-11-19 14:06:11,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-11-19 14:06:11,649 INFO L175 Difference]: Start difference. First operand has 149 places, 143 transitions, 1066 flow. Second operand 4 states and 178 transitions. [2024-11-19 14:06:11,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 142 transitions, 1216 flow [2024-11-19 14:06:11,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 142 transitions, 1191 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-19 14:06:11,691 INFO L231 Difference]: Finished difference. Result has 146 places, 142 transitions, 1061 flow [2024-11-19 14:06:11,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1061, PETRI_PLACES=146, PETRI_TRANSITIONS=142} [2024-11-19 14:06:11,691 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 80 predicate places. [2024-11-19 14:06:11,691 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 142 transitions, 1061 flow [2024-11-19 14:06:11,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-11-19 14:06:11,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:11,691 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:11,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 14:06:11,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:11,892 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:11,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:11,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1733382226, now seen corresponding path program 1 times [2024-11-19 14:06:11,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:11,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157673745] [2024-11-19 14:06:11,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:11,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:11,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:11,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157673745] [2024-11-19 14:06:11,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157673745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:11,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:11,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:06:11,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547475292] [2024-11-19 14:06:11,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:11,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:06:11,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:11,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:06:11,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:06:11,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-19 14:06:11,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 142 transitions, 1061 flow. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:11,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:11,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-19 14:06:11,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:13,126 INFO L124 PetriNetUnfolderBase]: 6240/12842 cut-off events. [2024-11-19 14:06:13,126 INFO L125 PetriNetUnfolderBase]: For 43883/44647 co-relation queries the response was YES. [2024-11-19 14:06:13,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42845 conditions, 12842 events. 6240/12842 cut-off events. For 43883/44647 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 109710 event pairs, 1240 based on Foata normal form. 539/12709 useless extension candidates. Maximal degree in co-relation 42726. Up to 5621 conditions per place. [2024-11-19 14:06:13,230 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 265 selfloop transitions, 38 changer transitions 0/342 dead transitions. [2024-11-19 14:06:13,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 342 transitions, 3085 flow [2024-11-19 14:06:13,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 14:06:13,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 14:06:13,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 495 transitions. [2024-11-19 14:06:13,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-19 14:06:13,232 INFO L175 Difference]: Start difference. First operand has 146 places, 142 transitions, 1061 flow. Second operand 11 states and 495 transitions. [2024-11-19 14:06:13,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 342 transitions, 3085 flow [2024-11-19 14:06:13,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 342 transitions, 3055 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:06:13,356 INFO L231 Difference]: Finished difference. Result has 156 places, 162 transitions, 1309 flow [2024-11-19 14:06:13,357 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1309, PETRI_PLACES=156, PETRI_TRANSITIONS=162} [2024-11-19 14:06:13,357 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 90 predicate places. [2024-11-19 14:06:13,357 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 162 transitions, 1309 flow [2024-11-19 14:06:13,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:13,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:13,358 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:13,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 14:06:13,358 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:13,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:13,358 INFO L85 PathProgramCache]: Analyzing trace with hash -527410070, now seen corresponding path program 1 times [2024-11-19 14:06:13,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:13,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413671290] [2024-11-19 14:06:13,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:13,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:13,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:13,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413671290] [2024-11-19 14:06:13,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413671290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:13,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:13,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:13,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121089478] [2024-11-19 14:06:13,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:13,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:13,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:13,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:13,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:13,410 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-11-19 14:06:13,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 162 transitions, 1309 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-11-19 14:06:13,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:13,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-11-19 14:06:13,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:14,565 INFO L124 PetriNetUnfolderBase]: 4718/10596 cut-off events. [2024-11-19 14:06:14,566 INFO L125 PetriNetUnfolderBase]: For 40941/41386 co-relation queries the response was YES. [2024-11-19 14:06:14,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37464 conditions, 10596 events. 4718/10596 cut-off events. For 40941/41386 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 94439 event pairs, 2407 based on Foata normal form. 367/10522 useless extension candidates. Maximal degree in co-relation 37356. Up to 5733 conditions per place. [2024-11-19 14:06:14,648 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 168 selfloop transitions, 8 changer transitions 0/237 dead transitions. [2024-11-19 14:06:14,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 237 transitions, 2265 flow [2024-11-19 14:06:14,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:14,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:14,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-11-19 14:06:14,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.725 [2024-11-19 14:06:14,649 INFO L175 Difference]: Start difference. First operand has 156 places, 162 transitions, 1309 flow. Second operand 4 states and 203 transitions. [2024-11-19 14:06:14,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 237 transitions, 2265 flow [2024-11-19 14:06:14,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 237 transitions, 2241 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:14,755 INFO L231 Difference]: Finished difference. Result has 160 places, 163 transitions, 1340 flow [2024-11-19 14:06:14,756 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1340, PETRI_PLACES=160, PETRI_TRANSITIONS=163} [2024-11-19 14:06:14,756 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 94 predicate places. [2024-11-19 14:06:14,756 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 163 transitions, 1340 flow [2024-11-19 14:06:14,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-11-19 14:06:14,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:14,756 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:14,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 14:06:14,756 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:14,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:14,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1152409159, now seen corresponding path program 1 times [2024-11-19 14:06:14,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:14,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443069304] [2024-11-19 14:06:14,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:14,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:14,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:14,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443069304] [2024-11-19 14:06:14,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443069304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:14,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:14,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:14,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407908962] [2024-11-19 14:06:14,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:14,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:14,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:14,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:14,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:14,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-11-19 14:06:14,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 163 transitions, 1340 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-19 14:06:14,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:14,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-11-19 14:06:14,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:16,069 INFO L124 PetriNetUnfolderBase]: 5411/11441 cut-off events. [2024-11-19 14:06:16,070 INFO L125 PetriNetUnfolderBase]: For 47199/47813 co-relation queries the response was YES. [2024-11-19 14:06:16,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41411 conditions, 11441 events. 5411/11441 cut-off events. For 47199/47813 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 98265 event pairs, 2037 based on Foata normal form. 530/11488 useless extension candidates. Maximal degree in co-relation 41302. Up to 4855 conditions per place. [2024-11-19 14:06:16,163 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 163 selfloop transitions, 17 changer transitions 0/242 dead transitions. [2024-11-19 14:06:16,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 242 transitions, 2404 flow [2024-11-19 14:06:16,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:16,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:16,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-11-19 14:06:16,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7071428571428572 [2024-11-19 14:06:16,164 INFO L175 Difference]: Start difference. First operand has 160 places, 163 transitions, 1340 flow. Second operand 4 states and 198 transitions. [2024-11-19 14:06:16,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 242 transitions, 2404 flow [2024-11-19 14:06:16,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 242 transitions, 2392 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:16,283 INFO L231 Difference]: Finished difference. Result has 164 places, 163 transitions, 1393 flow [2024-11-19 14:06:16,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1393, PETRI_PLACES=164, PETRI_TRANSITIONS=163} [2024-11-19 14:06:16,283 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 98 predicate places. [2024-11-19 14:06:16,284 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 163 transitions, 1393 flow [2024-11-19 14:06:16,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-19 14:06:16,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:16,284 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:16,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 14:06:16,284 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:16,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:16,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1152408134, now seen corresponding path program 1 times [2024-11-19 14:06:16,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:16,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566620962] [2024-11-19 14:06:16,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:16,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:16,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:16,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:16,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566620962] [2024-11-19 14:06:16,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566620962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:16,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:16,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 14:06:16,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235521068] [2024-11-19 14:06:16,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:16,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:06:16,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:16,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:06:16,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:06:16,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 70 [2024-11-19 14:06:16,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 163 transitions, 1393 flow. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 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) [2024-11-19 14:06:16,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:16,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 70 [2024-11-19 14:06:16,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:17,192 INFO L124 PetriNetUnfolderBase]: 4864/10408 cut-off events. [2024-11-19 14:06:17,192 INFO L125 PetriNetUnfolderBase]: For 48987/49558 co-relation queries the response was YES. [2024-11-19 14:06:17,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39298 conditions, 10408 events. 4864/10408 cut-off events. For 48987/49558 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 88380 event pairs, 1711 based on Foata normal form. 362/10401 useless extension candidates. Maximal degree in co-relation 39188. Up to 4217 conditions per place. [2024-11-19 14:06:17,268 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 244 selfloop transitions, 20 changer transitions 0/320 dead transitions. [2024-11-19 14:06:17,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 320 transitions, 3318 flow [2024-11-19 14:06:17,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:06:17,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:06:17,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2024-11-19 14:06:17,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-11-19 14:06:17,270 INFO L175 Difference]: Start difference. First operand has 164 places, 163 transitions, 1393 flow. Second operand 6 states and 275 transitions. [2024-11-19 14:06:17,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 320 transitions, 3318 flow [2024-11-19 14:06:17,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 320 transitions, 3267 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-19 14:06:17,383 INFO L231 Difference]: Finished difference. Result has 166 places, 164 transitions, 1401 flow [2024-11-19 14:06:17,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1401, PETRI_PLACES=166, PETRI_TRANSITIONS=164} [2024-11-19 14:06:17,383 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 100 predicate places. [2024-11-19 14:06:17,383 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 1401 flow [2024-11-19 14:06:17,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 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) [2024-11-19 14:06:17,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:17,384 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:17,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 14:06:17,384 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:17,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:17,384 INFO L85 PathProgramCache]: Analyzing trace with hash -116208225, now seen corresponding path program 1 times [2024-11-19 14:06:17,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:17,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845401973] [2024-11-19 14:06:17,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:17,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:17,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:17,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:17,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845401973] [2024-11-19 14:06:17,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845401973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:17,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:17,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:17,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133431521] [2024-11-19 14:06:17,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:17,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:17,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:17,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:17,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:17,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-19 14:06:17,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 1401 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2024-11-19 14:06:17,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:17,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-19 14:06:17,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:18,133 INFO L124 PetriNetUnfolderBase]: 3674/8914 cut-off events. [2024-11-19 14:06:18,134 INFO L125 PetriNetUnfolderBase]: For 42815/43312 co-relation queries the response was YES. [2024-11-19 14:06:18,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33709 conditions, 8914 events. 3674/8914 cut-off events. For 42815/43312 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 80856 event pairs, 1591 based on Foata normal form. 426/9140 useless extension candidates. Maximal degree in co-relation 33599. Up to 3184 conditions per place. [2024-11-19 14:06:18,193 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 167 selfloop transitions, 4 changer transitions 0/240 dead transitions. [2024-11-19 14:06:18,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 240 transitions, 2385 flow [2024-11-19 14:06:18,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:18,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:18,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-19 14:06:18,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2024-11-19 14:06:18,194 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 1401 flow. Second operand 4 states and 216 transitions. [2024-11-19 14:06:18,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 240 transitions, 2385 flow [2024-11-19 14:06:18,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 240 transitions, 2309 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-11-19 14:06:18,269 INFO L231 Difference]: Finished difference. Result has 168 places, 165 transitions, 1390 flow [2024-11-19 14:06:18,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1390, PETRI_PLACES=168, PETRI_TRANSITIONS=165} [2024-11-19 14:06:18,270 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 102 predicate places. [2024-11-19 14:06:18,270 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 165 transitions, 1390 flow [2024-11-19 14:06:18,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2024-11-19 14:06:18,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:18,270 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:18,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 14:06:18,270 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:18,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:18,271 INFO L85 PathProgramCache]: Analyzing trace with hash -636444051, now seen corresponding path program 1 times [2024-11-19 14:06:18,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:18,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519453541] [2024-11-19 14:06:18,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:18,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:18,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:18,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:18,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519453541] [2024-11-19 14:06:18,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519453541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:18,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:18,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:18,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224946049] [2024-11-19 14:06:18,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:18,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:18,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:18,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:18,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:18,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-11-19 14:06:18,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 165 transitions, 1390 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2024-11-19 14:06:18,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:18,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-11-19 14:06:18,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:19,136 INFO L124 PetriNetUnfolderBase]: 4836/10282 cut-off events. [2024-11-19 14:06:19,136 INFO L125 PetriNetUnfolderBase]: For 49347/49953 co-relation queries the response was YES. [2024-11-19 14:06:19,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39759 conditions, 10282 events. 4836/10282 cut-off events. For 49347/49953 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 86898 event pairs, 2474 based on Foata normal form. 510/10568 useless extension candidates. Maximal degree in co-relation 39647. Up to 5897 conditions per place. [2024-11-19 14:06:19,207 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 178 selfloop transitions, 8 changer transitions 0/246 dead transitions. [2024-11-19 14:06:19,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 246 transitions, 2510 flow [2024-11-19 14:06:19,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:19,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:19,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2024-11-19 14:06:19,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7178571428571429 [2024-11-19 14:06:19,208 INFO L175 Difference]: Start difference. First operand has 168 places, 165 transitions, 1390 flow. Second operand 4 states and 201 transitions. [2024-11-19 14:06:19,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 246 transitions, 2510 flow [2024-11-19 14:06:19,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 246 transitions, 2495 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:19,305 INFO L231 Difference]: Finished difference. Result has 171 places, 166 transitions, 1426 flow [2024-11-19 14:06:19,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1426, PETRI_PLACES=171, PETRI_TRANSITIONS=166} [2024-11-19 14:06:19,305 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 105 predicate places. [2024-11-19 14:06:19,305 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 166 transitions, 1426 flow [2024-11-19 14:06:19,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2024-11-19 14:06:19,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:19,305 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:19,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 14:06:19,306 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:19,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:19,306 INFO L85 PathProgramCache]: Analyzing trace with hash 798705687, now seen corresponding path program 1 times [2024-11-19 14:06:19,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:19,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659249008] [2024-11-19 14:06:19,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:19,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:19,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:19,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659249008] [2024-11-19 14:06:19,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659249008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:19,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:19,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:19,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605189507] [2024-11-19 14:06:19,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:19,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:19,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:19,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:19,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:19,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-19 14:06:19,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 166 transitions, 1426 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:19,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:19,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-19 14:06:19,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:20,110 INFO L124 PetriNetUnfolderBase]: 3675/8616 cut-off events. [2024-11-19 14:06:20,110 INFO L125 PetriNetUnfolderBase]: For 43728/44228 co-relation queries the response was YES. [2024-11-19 14:06:20,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34081 conditions, 8616 events. 3675/8616 cut-off events. For 43728/44228 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 75977 event pairs, 1285 based on Foata normal form. 401/8952 useless extension candidates. Maximal degree in co-relation 33969. Up to 3167 conditions per place. [2024-11-19 14:06:20,158 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 171 selfloop transitions, 4 changer transitions 0/244 dead transitions. [2024-11-19 14:06:20,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 244 transitions, 2456 flow [2024-11-19 14:06:20,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:20,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:20,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-11-19 14:06:20,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2024-11-19 14:06:20,160 INFO L175 Difference]: Start difference. First operand has 171 places, 166 transitions, 1426 flow. Second operand 4 states and 214 transitions. [2024-11-19 14:06:20,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 244 transitions, 2456 flow [2024-11-19 14:06:20,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 244 transitions, 2452 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-19 14:06:20,261 INFO L231 Difference]: Finished difference. Result has 176 places, 167 transitions, 1445 flow [2024-11-19 14:06:20,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1445, PETRI_PLACES=176, PETRI_TRANSITIONS=167} [2024-11-19 14:06:20,262 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 110 predicate places. [2024-11-19 14:06:20,262 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 167 transitions, 1445 flow [2024-11-19 14:06:20,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:20,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:20,262 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:20,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 14:06:20,262 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:20,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:20,263 INFO L85 PathProgramCache]: Analyzing trace with hash -458806887, now seen corresponding path program 1 times [2024-11-19 14:06:20,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:20,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451975497] [2024-11-19 14:06:20,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:20,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:20,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:20,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:20,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451975497] [2024-11-19 14:06:20,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451975497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:20,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879613350] [2024-11-19 14:06:20,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:20,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:20,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:20,372 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) [2024-11-19 14:06:20,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 14:06:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:20,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 14:06:20,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:20,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:20,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879613350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:20,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:20,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-19 14:06:20,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573553281] [2024-11-19 14:06:20,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:20,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 14:06:20,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:20,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 14:06:20,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-19 14:06:20,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-11-19 14:06:20,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 167 transitions, 1445 flow. Second operand has 20 states, 20 states have (on average 36.8) internal successors, (736), 20 states have internal predecessors, (736), 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) [2024-11-19 14:06:20,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:20,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-11-19 14:06:20,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:22,034 INFO L124 PetriNetUnfolderBase]: 5767/13658 cut-off events. [2024-11-19 14:06:22,034 INFO L125 PetriNetUnfolderBase]: For 72031/72754 co-relation queries the response was YES. [2024-11-19 14:06:22,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54872 conditions, 13658 events. 5767/13658 cut-off events. For 72031/72754 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 130554 event pairs, 2713 based on Foata normal form. 475/13997 useless extension candidates. Maximal degree in co-relation 51097. Up to 5807 conditions per place. [2024-11-19 14:06:22,146 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 256 selfloop transitions, 16 changer transitions 6/347 dead transitions. [2024-11-19 14:06:22,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 347 transitions, 3608 flow [2024-11-19 14:06:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:06:22,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:06:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 452 transitions. [2024-11-19 14:06:22,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6457142857142857 [2024-11-19 14:06:22,147 INFO L175 Difference]: Start difference. First operand has 176 places, 167 transitions, 1445 flow. Second operand 10 states and 452 transitions. [2024-11-19 14:06:22,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 347 transitions, 3608 flow [2024-11-19 14:06:22,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 347 transitions, 3593 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:22,409 INFO L231 Difference]: Finished difference. Result has 188 places, 172 transitions, 1537 flow [2024-11-19 14:06:22,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1537, PETRI_PLACES=188, PETRI_TRANSITIONS=172} [2024-11-19 14:06:22,409 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 122 predicate places. [2024-11-19 14:06:22,409 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 172 transitions, 1537 flow [2024-11-19 14:06:22,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 36.8) internal successors, (736), 20 states have internal predecessors, (736), 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) [2024-11-19 14:06:22,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:22,410 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:22,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 14:06:22,610 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,SelfDestructingSolverStorable26 [2024-11-19 14:06:22,611 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:22,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:22,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1269838111, now seen corresponding path program 1 times [2024-11-19 14:06:22,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:22,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425086578] [2024-11-19 14:06:22,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:22,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:22,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:22,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:22,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425086578] [2024-11-19 14:06:22,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425086578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:22,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:22,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 14:06:22,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554011827] [2024-11-19 14:06:22,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:22,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 14:06:22,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:22,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 14:06:22,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:06:22,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-19 14:06:22,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 172 transitions, 1537 flow. Second operand has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 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) [2024-11-19 14:06:22,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:22,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-19 14:06:22,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:26,010 INFO L124 PetriNetUnfolderBase]: 16432/32472 cut-off events. [2024-11-19 14:06:26,010 INFO L125 PetriNetUnfolderBase]: For 183272/184308 co-relation queries the response was YES. [2024-11-19 14:06:26,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135344 conditions, 32472 events. 16432/32472 cut-off events. For 183272/184308 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 298475 event pairs, 2398 based on Foata normal form. 1200/33590 useless extension candidates. Maximal degree in co-relation 121854. Up to 8419 conditions per place. [2024-11-19 14:06:26,287 INFO L140 encePairwiseOnDemand]: 52/70 looper letters, 542 selfloop transitions, 224 changer transitions 0/803 dead transitions. [2024-11-19 14:06:26,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 803 transitions, 8544 flow [2024-11-19 14:06:26,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 14:06:26,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-19 14:06:26,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1084 transitions. [2024-11-19 14:06:26,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6194285714285714 [2024-11-19 14:06:26,289 INFO L175 Difference]: Start difference. First operand has 188 places, 172 transitions, 1537 flow. Second operand 25 states and 1084 transitions. [2024-11-19 14:06:26,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 803 transitions, 8544 flow [2024-11-19 14:06:27,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 803 transitions, 8517 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-19 14:06:27,460 INFO L231 Difference]: Finished difference. Result has 231 places, 397 transitions, 4964 flow [2024-11-19 14:06:27,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4964, PETRI_PLACES=231, PETRI_TRANSITIONS=397} [2024-11-19 14:06:27,461 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 165 predicate places. [2024-11-19 14:06:27,461 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 397 transitions, 4964 flow [2024-11-19 14:06:27,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 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) [2024-11-19 14:06:27,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:27,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:27,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-19 14:06:27,461 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:27,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:27,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2106446659, now seen corresponding path program 1 times [2024-11-19 14:06:27,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:27,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058206750] [2024-11-19 14:06:27,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:27,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:27,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:27,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:27,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058206750] [2024-11-19 14:06:27,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058206750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:27,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:27,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 14:06:27,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364359506] [2024-11-19 14:06:27,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:27,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 14:06:27,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:27,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 14:06:27,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:06:27,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-19 14:06:27,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 397 transitions, 4964 flow. Second operand has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 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) [2024-11-19 14:06:27,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:27,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-19 14:06:27,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:36,116 INFO L124 PetriNetUnfolderBase]: 26614/52277 cut-off events. [2024-11-19 14:06:36,116 INFO L125 PetriNetUnfolderBase]: For 617537/619464 co-relation queries the response was YES. [2024-11-19 14:06:36,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264637 conditions, 52277 events. 26614/52277 cut-off events. For 617537/619464 co-relation queries the response was YES. Maximal size of possible extension queue 1593. Compared 515043 event pairs, 3908 based on Foata normal form. 2241/54414 useless extension candidates. Maximal degree in co-relation 240794. Up to 15795 conditions per place. [2024-11-19 14:06:36,822 INFO L140 encePairwiseOnDemand]: 52/70 looper letters, 796 selfloop transitions, 394 changer transitions 0/1227 dead transitions. [2024-11-19 14:06:36,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 1227 transitions, 16783 flow [2024-11-19 14:06:36,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 14:06:36,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-19 14:06:36,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1084 transitions. [2024-11-19 14:06:36,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6194285714285714 [2024-11-19 14:06:36,824 INFO L175 Difference]: Start difference. First operand has 231 places, 397 transitions, 4964 flow. Second operand 25 states and 1084 transitions. [2024-11-19 14:06:36,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 1227 transitions, 16783 flow [2024-11-19 14:06:42,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 1227 transitions, 16683 flow, removed 50 selfloop flow, removed 0 redundant places. [2024-11-19 14:06:42,588 INFO L231 Difference]: Finished difference. Result has 278 places, 701 transitions, 11060 flow [2024-11-19 14:06:42,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=4924, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=11060, PETRI_PLACES=278, PETRI_TRANSITIONS=701} [2024-11-19 14:06:42,589 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 212 predicate places. [2024-11-19 14:06:42,589 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 701 transitions, 11060 flow [2024-11-19 14:06:42,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 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) [2024-11-19 14:06:42,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:42,589 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:42,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-19 14:06:42,589 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:42,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:42,590 INFO L85 PathProgramCache]: Analyzing trace with hash -2136366212, now seen corresponding path program 1 times [2024-11-19 14:06:42,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:42,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090751632] [2024-11-19 14:06:42,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:42,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:42,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:42,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090751632] [2024-11-19 14:06:42,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090751632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:42,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689596116] [2024-11-19 14:06:42,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:42,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:42,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:42,667 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) [2024-11-19 14:06:42,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 14:06:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:42,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 14:06:42,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:42,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:42,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689596116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:42,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:42,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-19 14:06:42,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879556831] [2024-11-19 14:06:42,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:42,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 14:06:42,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:42,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 14:06:42,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-19 14:06:42,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-11-19 14:06:42,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 701 transitions, 11060 flow. Second operand has 20 states, 20 states have (on average 36.9) internal successors, (738), 20 states have internal predecessors, (738), 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) [2024-11-19 14:06:42,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:42,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-11-19 14:06:42,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:50,028 INFO L124 PetriNetUnfolderBase]: 15901/35615 cut-off events. [2024-11-19 14:06:50,028 INFO L125 PetriNetUnfolderBase]: For 561207/564370 co-relation queries the response was YES. [2024-11-19 14:06:50,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196889 conditions, 35615 events. 15901/35615 cut-off events. For 561207/564370 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 372087 event pairs, 7731 based on Foata normal form. 1474/36782 useless extension candidates. Maximal degree in co-relation 193473. Up to 19688 conditions per place. [2024-11-19 14:06:50,439 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 460 selfloop transitions, 20 changer transitions 113/911 dead transitions. [2024-11-19 14:06:50,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 911 transitions, 15151 flow [2024-11-19 14:06:50,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:06:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:06:50,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 449 transitions. [2024-11-19 14:06:50,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6414285714285715 [2024-11-19 14:06:50,440 INFO L175 Difference]: Start difference. First operand has 278 places, 701 transitions, 11060 flow. Second operand 10 states and 449 transitions. [2024-11-19 14:06:50,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 911 transitions, 15151 flow [2024-11-19 14:06:56,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 911 transitions, 14805 flow, removed 173 selfloop flow, removed 0 redundant places. [2024-11-19 14:06:56,119 INFO L231 Difference]: Finished difference. Result has 291 places, 706 transitions, 10829 flow [2024-11-19 14:06:56,119 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=10686, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=679, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10829, PETRI_PLACES=291, PETRI_TRANSITIONS=706} [2024-11-19 14:06:56,119 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 225 predicate places. [2024-11-19 14:06:56,119 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 706 transitions, 10829 flow [2024-11-19 14:06:56,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 36.9) internal successors, (738), 20 states have internal predecessors, (738), 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) [2024-11-19 14:06:56,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:56,120 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] [2024-11-19 14:06:56,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 14:06:56,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:56,320 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:56,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:56,321 INFO L85 PathProgramCache]: Analyzing trace with hash 988934039, now seen corresponding path program 2 times [2024-11-19 14:06:56,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:56,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261100225] [2024-11-19 14:06:56,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:56,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:56,331 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:06:56,331 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:56,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:56,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261100225] [2024-11-19 14:06:56,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261100225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:56,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074275186] [2024-11-19 14:06:56,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:56,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:56,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:56,599 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) [2024-11-19 14:06:56,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 14:06:56,653 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:06:56,653 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:56,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 14:06:56,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:56,697 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 [2024-11-19 14:06:56,815 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 17 treesize of output 9 [2024-11-19 14:06:56,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:56,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:56,927 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 18 treesize of output 16 [2024-11-19 14:06:56,929 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 24 treesize of output 20 [2024-11-19 14:06:56,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:56,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074275186] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:56,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:56,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 27 [2024-11-19 14:06:56,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392183277] [2024-11-19 14:06:56,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:56,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-19 14:06:56,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:56,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-19 14:06:56,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2024-11-19 14:06:57,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2024-11-19 14:06:57,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 706 transitions, 10829 flow. Second operand has 29 states, 29 states have (on average 33.62068965517241) internal successors, (975), 29 states have internal predecessors, (975), 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) [2024-11-19 14:06:57,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:57,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2024-11-19 14:06:57,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand